阅读说明：本技术 角度调整机构及其使用方法 (Angle adjusting mechanism and using method thereof ) 是由 董莘 赵寒涛 白广利 李麒 吴文凯 甄海涛 钱冠华 吴冈 吴涛 刘天龙 聂洪淼 于 2019-03-14 设计创作，主要内容包括：角度调整机构及其使用方法,属于构件加工技术领域。本发明解决现有角度调整机构不能实现相对位置的固定和无法做到连续可调的问题。本发明的顶端连接块通过浮动式锁紧轴铰接安装在锁紧轴固定座上,夹紧定位机构铰接安装在夹紧定位机构固定座上,摩擦式锁紧机构固定安装在锁紧机构安装块上,浮动式锁紧轴的两端分别通过摩擦式锁紧机构和夹紧定位机构定位夹紧。该机构可以按照实际工况,灵活调整侧辅助平台和主平台之间的角度,来满足不同结构件间的加工角度和空间定位要求,同时具有调整操作的便利性和安全性,能够实现加工平台间相对位置的固定和角度的连续调整。此外,本机构还具有结构简单、易操作、造价低廉等优点。(An angle adjusting mechanism and a using method thereof belong to the technical field of component processing. The invention solves the problems that the prior angle adjusting mechanism can not realize the fixation of the relative position and can not realize the continuous adjustment. The top end connecting block is hinged on a locking shaft fixing seat through a floating type locking shaft, a clamping and positioning mechanism is hinged on the clamping and positioning mechanism fixing seat, a friction type locking mechanism is fixedly arranged on a locking mechanism mounting block, and two ends of the floating type locking shaft are respectively positioned and clamped through the friction type locking mechanism and the clamping and positioning mechanism. The mechanism can flexibly adjust the angle between the side auxiliary platform and the main platform according to actual working conditions to meet the requirements of machining angles and space positioning between different structural members, has the convenience and safety of adjustment operation, and can realize the fixation of relative positions between the machining platforms and the continuous adjustment of angles. In addition, the mechanism also has the advantages of simple structure, easy operation, low cost and the like.)

1. Angle adjustment mechanism, its characterized in that: the device comprises a friction type locking mechanism (1), a floating type locking shaft (2), a top end connecting block (3), a clamping and positioning mechanism (4) and a bottom end connecting block (5), wherein the friction type locking mechanism (1) is installed on one side of the upper end of the bottom end connecting block (5), the clamping and positioning mechanism (4) is installed on the other side of the upper end of the bottom end connecting block (5), and the bottom end connecting block (5) is hinged and connected with the top end connecting block (3) through the floating type locking shaft (2); the two ends of the floating type locking shaft (2) are respectively positioned and clamped through the clamping positioning mechanism (4) and the friction type locking mechanism (1).

2. The angular adjustment mechanism of claim 1, wherein: bottom connecting block (5) including locking mechanism installation piece (5a), locking axle fixing base (5b), press from both sides tight positioning mechanism fixing base (5c) and bottom base (5d), locking mechanism installation piece (5a), locking axle fixing base (5b) and press from both sides tight positioning mechanism fixing base (5c) all fixed mounting on bottom base (5d), be equipped with the hinge hole on locking axle fixing base (5b), top connecting block (3) are articulated through floating locking axle (2) and are installed on locking axle fixing base (5b), also be equipped with the hinge hole on pressing from both sides tight positioning mechanism fixing base (5c), press from both sides tight positioning mechanism (4) and articulate and install on pressing from both sides tight positioning mechanism fixing base (5c), friction formula locking mechanism (1) fixed mounting is on locking mechanism installation piece (5 a).

3. The angular adjustment mechanism of claim 1, wherein: the top end connecting block (3) comprises a top end connecting mechanism (3a) and a rotating handle (3b), the top end connecting mechanism (3a) comprises a connecting seat (3a1) and a mounting seat (3a2), the mounting seat (3a2) is fixed on the upper surface of the connecting seat (3a1), one end of the rotating handle (3b) is fixed on the lower surface of the connecting seat (3a1), the other end of the rotating handle (3b) is provided with a spline hole (3c), and the spline hole (3c) is an involute spline; the mounting seat (3a2) is fixedly connected with an external mechanism or a processing platform in a bolt, clamping groove, magnetic attraction, adhesion or welding mode.

4. The angle adjustment mechanism of claim 1, wherein: floating locking axle (2) including friction locking axle (2a), spring (2b), spacer pin (2c), adjustment separation blade (2d) and direction transmission shaft (2e), friction locking axle (2a) suit is on direction transmission shaft (2e), spacer pin (2c) pass direction transmission shaft (2e) and realize spacing connection to friction locking axle (2a), install on direction transmission shaft (2e) adjustment separation blade (2d), spring (2b) is passed simultaneously by friction locking axle (2a) and direction transmission shaft (2 e).

5. The angular adjustment mechanism of claim 4, wherein: the friction locking shaft (2a) comprises a friction disc (2a1), a floating shaft (2a2), limiting long holes (2a3) and guide grooves (2a4), the floating shaft (2a2) is of a hollow sleeve shaft structure, two limiting long holes (2a3) which are symmetrical in position are formed in the sleeve shaft side wall of the floating shaft (2a2), and two guide grooves (2a4) which are symmetrical in position are formed in the sleeve shaft inner wall of the floating shaft (2a 2); the friction disc (2a1) is fixed at one end of the floating shaft (2a2), and the friction disc (2a1) is made of ceramic friction material; the guide transmission shaft (2e) comprises a guide shaft (2e5) and a clamping positioning disc (2e6), and the clamping positioning disc (2e6) is fixed at the rear end of the guide shaft (2e 5); the guide shaft (2e5) comprises a guide structure (2e1), a limit pin hole (2e2), an adjusting thread (2e3), a spline (2e4) and a fixed seat mounting part (2e 7); the guide shaft (2e5) is provided with a guide structure (2e1) matched with the guide groove (2a4) and a limit pin hole (2e2) used for installing a limit pin (2 c); an adjusting thread (2e3), a fixed seat mounting part (2e7), a spline (2e4) and a fixed seat mounting part (2e7) are sequentially arranged behind the guide structure (2e 1); the clamping positioning disc (2e6) is made of elastic friction material, and the spline (2e4) is an involute spline.

6. The angular adjustment mechanism of claim 5, wherein: the guide transmission shaft (2e) penetrates through a hinge hole in the locking shaft fixing seat (5b), the fixing seat mounting part (2e7) corresponds to the hinge hole in the locking shaft fixing seat (5b), clearance fit is formed between the fixing seat mounting part (2e7) and the locking shaft fixing seat (5b), and the floating type locking shaft (2) can circumferentially rotate in the hinge hole in the locking shaft fixing seat (5 b); the spline (2e4) penetrates through the spline hole (3c) and is matched with the spline hole through an involute spline structure, so that the top end connecting block (3) rotates or is fixed along with the floating type locking shaft (2) in the circumferential direction; the guide structure (2e1) is inserted in the floating shaft (2a2), and the guide structure (2e1) is matched with the guide groove (2a4) so that the floating shaft (2a2) slides axially along the guide shaft (2e 5); the limiting pin (2c) penetrates through the limiting long hole (2a3) and the limiting pin hole (2e2) at the same time, the limiting pin (2c) is installed in the limiting pin hole (2e2) in an interference mode, the limiting pin (2c) is matched with the limiting long hole (2a3), and the sliding position of the floating shaft (2a2) is limited; the adjusting baffle (2d) is provided with internal threads, the adjusting thread (2e3) is provided with external threads, and the adjusting baffle (2d) is connected with the adjusting thread (2e3) through a thread structure; the spring (2b) is penetrated by the floating shaft (2a2) and the guide structure (2e1) at the same time, one end of the spring (2b) is pressed against the friction disc (2a1) of the friction locking shaft (2a), the other end of the spring (2b) is pressed against the adjusting catch (2d), and the pretightening force of the spring (2b) on the friction locking shaft (2a) to the friction disc (2a1) is adjusted by changing the position of the adjusting catch (2d) on the adjusting thread (2e 3).

7. The angular adjustment mechanism of claim 1, wherein: the clamping and positioning mechanism (4) comprises a positioning clamping wheel (4a), a clamping wheel shaft (4b) and a clamping rotating handle (4c), a round hole is formed in the axis of the positioning clamping wheel (4a), the clamping rotating handle (4c) is fixedly installed on the radial side wall of the positioning clamping wheel (4a), the clamping wheel shaft (4b) penetrates through hinge holes in the positioning clamping wheel (4a) and a clamping and positioning mechanism fixing seat (5c), the clamping and positioning mechanism (4) is hinged on a bottom connecting block (5), and the clamping and positioning mechanism (4) rotates around the clamping wheel shaft (4 b).

8. The angular adjustment mechanism of claim 1, wherein: the friction type locking mechanism (1) comprises a locking handle (1a), an upper rotating rod (1b), a middle connecting rod (1c), a locking connecting rod (1d), a friction disc adjusting rod (1e), a friction locking disc (1f), a bottom connecting seat (1g), a bottom connecting seat lower connecting shaft (1h), a middle connecting shaft (1i), a bottom connecting seat upper connecting shaft (1j) and a top connecting shaft (1 k); the upper rotating rod (1b) is provided with an upper rotating rod end hole (1b1) and an upper rotating rod middle hole (1b2), the middle connecting rod (1c) is provided with a middle connecting rod left hole (1c1) and a middle connecting rod right hole (1c2), the locking connecting rod (1d) is provided with a locking connecting rod end hole (1d1), a locking connecting rod middle hole (1d2) and a locking connecting rod front hole (1d3), the bottom connecting base (1g) comprises a bottom plate (1g1) and a vertical plate (1g2), the vertical plate (1g2) is provided with a bottom connecting base upper connecting hole (1g3) and a bottom connecting base lower connecting hole (1g4), and the bottom plate (1g1) can be fixedly installed on the locking mechanism installation block (5a) in a bolt, clamping groove, magnetic attraction, pasting;

the bottom connecting seat (1g) is connected with the upper rotating rod (1b) through a bottom connecting seat lower connecting shaft (1h), and the bottom connecting seat lower connecting shaft (1h) penetrates through an upper rotating rod end hole (1b1) and a bottom connecting seat lower connecting hole (1g 4); the tail end of the upper rotating rod (1b) is connected with a locking handle (1a), the upper rotating rod (1b) is connected with a middle connecting rod (1c) through a top connecting shaft (1k) in the middle, and the top connecting shaft (1k) penetrates through a middle hole (1b2) of the upper rotating rod and a left hole (1c1) of the middle connecting rod; the middle connecting rod (1c) is connected with the locking connecting rod (1d) through a middle connecting shaft (1i), and the middle connecting shaft (1i) penetrates through a middle connecting rod right hole (1c2) and a locking connecting rod middle hole (1d 2); the rear end of the locking connecting rod (1d) is connected with the bottom connecting seat (1g) through a bottom connecting seat upper connecting shaft (1j), and the bottom connecting seat upper connecting shaft (1j) penetrates through a locking connecting rod end hole (1d1) and a bottom connecting seat upper connecting hole (1g 3); the front end of the locking connecting rod (1d) is fixed with a locking friction disk (1f) through a friction disk adjusting rod (1e), and the friction disk adjusting rod (1e) penetrates through a front hole (1d3) of the locking connecting rod.

9. The angular adjustment mechanism of claim 8, wherein: the friction type locking mechanism (1) is characterized in that the rotating center of a lower connecting shaft (1h) of the bottom connecting seat is set to be a point O, the rotating center of a middle connecting shaft (1i) is set to be a point A, the rotating center of a top connecting shaft (1k) is set to be a point B, and the rotating center of an upper connecting shaft (1j) of the bottom connecting seat is set to be a point C; therefore, the length between the rotation center of the top connecting shaft (1k) and the rotation center of the bottom connecting base lower connecting shaft (1h) is L_OBThe length between the rotation center of the middle connecting shaft (1i) and the rotation center of the top connecting shaft (1k) is L_ABThe length between the rotation center of the middle connecting shaft (1i) and the rotation center of the connecting shaft (1j) on the bottom connecting seat is L_ACThe length between the rotation center of the lower connecting shaft (1h) of the bottom connecting seat and the rotation center of the upper connecting shaft (1j) of the bottom connecting seat is L_OC；

The friction type locking mechanism (1) meets the following dimensional conditions:

condition one, L_OBGreater than L_AC、L_OCAnd L_AB；

Condition two, L_AB≤L_AC；

Condition three，L_AB≤L_OC；

Condition four, L_OB＝L_AB+L_AC；

Condition five, L_OB+L_AB>L_OC+L_AC。

10. A method of using the angle adjustment mechanism of claim 1, wherein: comprises the following steps of (a) carrying out,

step one, fixedly mounting a side auxiliary platform (M1) on a mounting seat (3a2), and fixedly mounting a bottom end base (5d) on a main platform (M2) in a bolt, clamping groove, magnetic attraction, adhesion or welding mode;

step two, the angle adjusting range between the side auxiliary platform (M1) and the main platform (M2) is +/-90 degrees, the included angle between the side auxiliary platform (M1) and the main platform (M2) is adjusted, after the required angle is adjusted, the clamping rotating handle (4c) is rotated downwards, the clamping positioning disc (2e6) is clamped through the positioning clamping wheel (4a), so that the rotating position of the floating type locking shaft (2) is preliminarily positioned, and whether the angle position between the two platforms meets the use requirement or not is observed;

step three, if the use requirement is not met, the clamping rotating handle (4c) is rotated upwards, the clamping of the positioning clamping wheel (4a) to the clamping positioning disc (2e6) is released, and the operation of the step two is repeated until the angle between the side auxiliary platform (M1) and the main platform (M2) is adjusted to a proper position;

step four, rotating a locking handle (1a) to enable the friction type locking mechanism (1) to be in a locking state, enabling a locking friction disc (1f) to be in contact with a friction disc (2a1) on a friction locking shaft (2a) for clamping, locking the rotating position of the floating type locking shaft (2) through friction force, further fixing the position of a top end connecting block (3), and realizing the fixation of the angle position between a side auxiliary platform (M1) and a main platform (M2);

fifthly, the position of the adjusting baffle plate (2d) is adjusted, and the elastic force of the spring (2b) acting on the friction disc (2a1) is adjusted, so that the positive pressure of the contact surface between the locking friction disc (1f) and the friction disc (2a1) is changed;

sixthly, when the positioning angle between the side auxiliary platform (M1) and the main platform (M2) needs to be released or changed, firstly, the locking handle (1a) is rotated to enable the friction type locking mechanism (1) to be in an open state, then the clamping rotating handle (4c) is rotated to release the clamping state of the clamping positioning disc (2e6) by the clamping wheel (4a), and the release of the positioning angle between the side auxiliary platform (M1) and the main platform (M2) is achieved; if the angle position between the side auxiliary platform (M1) and the main platform (M2) needs to be reset, the steps II, III, IV and V can be repeated.

Technical Field

The invention relates to an angle adjusting mechanism and a using method thereof, belonging to the technical field of component processing.

Background

In production and life, the angles of two connecting parts are often adjusted and fixed, while the common connecting parts can often realize continuous angle adjustment but cannot realize the fixation of relative positions (such as hinges), and a part of connecting parts can realize the fastening connection of certain specific angles and cannot realize continuous adjustment (such as 90-degree right-angle connecting parts and 45-degree angle connecting parts). Therefore, the invention provides a mechanism which can realize the continuous adjustment of the included angle between two parts in a certain range and can complete the fastening connection. The mechanism is particularly suitable for combined machining and manufacturing platforms, can be used as a connecting part and an angle adjusting part between two platforms, and realizes relative angle adjustment and fixation between the two platforms.

Disclosure of Invention

The invention provides a novel angle adjusting connecting mechanism, aiming at solving the problem that the existing angle adjusting mechanism can not realize angle continuous adjustment and relative position fixation at the same time.

The technical scheme of the invention is as follows:

the angle adjusting mechanism comprises a friction type locking mechanism 1, a floating type locking shaft 2, a top end connecting block 3, a clamping and positioning mechanism 4 and a bottom end connecting block 5, wherein the friction type locking mechanism 1 is installed on one side of the upper end of the bottom end connecting block 5, the clamping and positioning mechanism 4 is installed on the other side of the upper end of the bottom end connecting block 5, and the bottom end connecting block 5 is hinged and connected with the top end connecting block 3 through the floating type locking shaft 2; two ends of the floating type locking shaft 2 are respectively positioned and clamped through the clamping positioning mechanism 4 and the friction type locking mechanism 1.

Preferably: bottom connecting block 5 include locking mechanism installation piece 5a, locking axle fixing base 5b, press from both sides tight positioning mechanism fixing base 5c and bottom base 5d, locking mechanism installation piece 5a, locking axle fixing base 5b and press from both sides tight positioning mechanism fixing base 5c all fixed mounting on bottom base 5d, be equipped with the hinge hole on the locking axle fixing base 5b, top connecting block 3 articulates through floating locking axle 2 and installs on locking axle fixing base 5b, also be equipped with the hinge hole on pressing from both sides tight positioning mechanism fixing base 5c, press from both sides tight positioning mechanism 4 and articulate and install on pressing from both sides tight positioning mechanism fixing base 5c, 1 fixed mounting of friction formula locking mechanism is on locking mechanism installation piece 5 a.

Preferably: the top end connecting block 3 comprises a top end connecting mechanism 3a and a rotating handle 3b, the top end connecting mechanism 3a comprises a connecting seat 3a1 and a mounting seat 3a2, the mounting seat 3a2 is fixed on the upper surface of the connecting seat 3a1, one end of the rotating handle 3b is fixed on the lower surface of the connecting seat 3a1, the other end of the rotating handle 3b is provided with a spline hole 3c, and the spline hole 3c is an involute spline; the mounting seat 3a2 is fixedly connected with an external mechanism or a processing platform through bolts, clamping grooves, magnetic attraction, welding or adhesion.

Preferably: floating locking axle 2 include friction locking axle 2a, spring 2b, spacer pin 2c, adjustment separation blade 2d and direction transmission shaft 2e, friction locking axle 2a suit is at direction transmission shaft 2e, spacer pin 2c passes direction transmission shaft 2e and realizes spacing connection to friction locking axle 2a, adjustment separation blade 2d is installed on direction transmission shaft 2e, spring 2b is passed simultaneously by friction locking axle 2a and direction transmission shaft 2 e.

Preferably: the friction locking shaft 2a comprises a friction disc 2a1, a floating shaft 2a2, limiting long holes 2a3 and guide grooves 2a4, the floating shaft 2a2 is of a hollow sleeve shaft structure, two limiting long holes 2a3 which are symmetrical in position are formed in the sleeve shaft side wall of the floating shaft 2a2, and two guide grooves 2a4 which are symmetrical in position are formed in the sleeve shaft inner wall of the floating shaft 2a 2; the friction disk 2a1 is fixed to one end of the floating shaft 2a2, and the friction disk 2a1 is made of a ceramic friction material; the guide transmission shaft 2e comprises a guide shaft 2e5 and a clamping positioning disc 2e6, and the clamping positioning disc 2e6 is fixed at the rear end of the guide shaft 2e 5; the guide shaft 2e5 comprises a guide structure 2e1, a limit pin hole 2e2, an adjusting thread 2e3, a spline 2e4 and a fixed seat mounting part 2e 7; the guide shaft 2e5 is provided with a guide structure 2e1 matched with the guide groove 2a4 and a limit pin hole 2e2 used for installing a limit pin 2 c; an adjusting thread 2e3, a fixed seat mounting part 2e7, a spline 2e4 and a fixed seat mounting part 2e7 are sequentially arranged behind the guide structure 2e 1; the clamping positioning disc 2e6 is made of elastic friction material, and the spline 2e4 is an involute spline.

Preferably: the guide transmission shaft 2e penetrates through a hinge hole in the locking shaft fixing seat 5b, the fixing seat mounting part 2e7 corresponds to the hinge hole in the locking shaft fixing seat 5b in position, clearance fit is formed between the fixing seat mounting part 2e7 and the locking shaft fixing seat 5b, and the floating type locking shaft 2 can circumferentially rotate in the hinge hole in the locking shaft fixing seat 5 b; the spline 2e4 penetrates through the spline hole 3c and is matched through an involute spline structure, so that the top end connecting block 3 rotates or is fixed along with the floating type locking shaft 2 in the circumferential direction; the guide structure 2e1 is inserted into the floating shaft 2a2, and the guide structure 2e1 is matched with the guide groove 2a4, so that the floating shaft 2a2 axially slides along the guide shaft 2e 5; the limiting pin 2c simultaneously penetrates through the limiting long hole 2a3 and the limiting pin hole 2e2, the limiting pin 2c is arranged in the limiting pin hole 2e2 in an interference mode, so that the limiting pin 2c is matched with the limiting long hole 2a3 to limit the sliding position of the floating shaft 2a 2; the adjusting baffle piece 2d is provided with an internal thread, the adjusting thread 2e3 is provided with an external thread, and the adjusting baffle piece 2d is connected with the adjusting thread 2e3 through a thread structure; the spring 2b is penetrated by the floating shaft 2a2 and the guide structure 2e1 at the same time, one end of the spring 2b is pressed against the friction disc 2a1 of the friction locking shaft 2a, the other end of the spring 2b is pressed against the adjusting catch 2d, and the pretightening force of the spring 2b on the friction disc 2a1 on the friction locking shaft 2a is adjusted by changing the position of the adjusting catch 2d on the adjusting thread 2e 3.

Preferably: the clamping and positioning mechanism 4 comprises a positioning clamping wheel 4a, a clamping wheel shaft 4b and a clamping rotating handle 4c, the positioning clamping wheel 4a is a circular wheel disc with a minor arc-shaped area cut off, a round hole is formed in the axis of the positioning clamping wheel 4a, the clamping rotating handle 4c is fixedly installed on the radial side wall of the positioning clamping wheel 4a, the clamping wheel shaft 4b penetrates through hinge holes in the positioning clamping wheel 4a and a clamping and positioning mechanism fixing seat 5c, and the clamping and positioning mechanism 4 is hinged on a bottom connecting block 5, so that the clamping and positioning mechanism 4 rotates around the clamping wheel shaft 4 b.

Preferably: the friction type locking mechanism 1 comprises a locking handle 1a, an upper rotating rod 1b, a middle connecting rod 1c, a locking connecting rod 1d, a friction disc adjusting rod 1e, a friction locking disc 1f, a bottom connecting seat 1g, a bottom connecting seat lower connecting shaft 1h, a middle connecting shaft 1i, a bottom connecting seat upper connecting shaft 1j and a top connecting shaft 1 k; the upper rotating rod 1b is provided with an upper rotating rod end hole 1b1 and an upper rotating rod middle hole 1b2, the middle connecting rod 1c is provided with a middle connecting rod left hole 1c1 and a middle connecting rod right hole 1c2, the locking connecting rod 1d is provided with a locking connecting rod end hole 1d1, a locking connecting rod middle hole 1d2 and a locking connecting rod front hole 1d3, the bottom connecting seat 1g comprises a bottom plate 1g1 and a vertical plate 1g2, the vertical plate 1g2 is provided with a bottom connecting seat upper connecting hole 1g3 and a bottom connecting seat lower connecting hole 1g4, and the bottom plate 1g1 can be fixedly arranged on the locking mechanism mounting block 5a in a mode of bolts, clamping grooves, magnetic attraction, welding or;

the bottom connecting seat 1g is connected with the upper rotating rod 1b through a bottom connecting seat lower connecting shaft 1h, and the bottom connecting seat lower connecting shaft 1h penetrates through an upper rotating rod end hole 1b1 and a bottom connecting seat lower connecting hole 1g 4; the tail end of the upper rotating rod 1b is connected with a locking handle 1a, the upper rotating rod 1b is connected with a middle connecting rod 1c through a top connecting shaft 1k in the middle, and the top connecting shaft 1k penetrates through a middle hole 1b2 of the upper rotating rod and a left hole 1c1 of the middle connecting rod; the middle connecting rod 1c is connected with the locking connecting rod 1d through a middle connecting shaft 1i, and the middle connecting shaft 1i penetrates through a middle connecting rod right hole 1c2 and a locking connecting rod middle hole 1d 2; the rear end of the locking connecting rod 1d is connected with the bottom connecting seat 1g through a bottom connecting seat upper connecting shaft 1j, and the bottom connecting seat upper connecting shaft 1j penetrates through a locking connecting rod end hole 1d1 and a bottom connecting seat upper connecting hole 1g 3; the front end of the locking connecting rod 1d is fixed with a locking friction disk 1f through a friction disk adjusting rod 1e, and the friction disk adjusting rod 1e penetrates through a locking connecting rod front hole 1d 3.

Preferably: the friction type locking mechanism 1 is characterized in that the rotating center of a lower connecting shaft 1h of the bottom connecting seat is set to be a point O, the rotating center of a middle connecting shaft 1i is set to be a point A, the rotating center of a top connecting shaft 1k is set to be a point B, and the rotating center of an upper connecting shaft 1j of the bottom connecting seat is set to be a point C; therefore, the length between the rotation center of the top connecting shaft 1k and the rotation center of the bottom connecting seat lower connecting shaft 1h is L_OBThe length between the rotation center of the middle connecting shaft 1i and the rotation center of the top connecting shaft 1k is L_ABThe length between the rotation center of the middle connecting shaft 1i and the rotation center of the connecting shaft 1j on the bottom connecting seat is L_ACThe length between the rotation center of the lower connecting shaft 1h of the bottom connecting seat and the rotation center of the upper connecting shaft 1j of the bottom connecting seat is L_OC；

The friction type locking mechanism 1 meets the following dimensional conditions:

condition one, L_OBGreater than L_AC、L_OCAnd L_AB；

Condition two, L_AB≤L_AC；

Condition III, L_AB≤L_OC；

Condition four, L_OB＝L_AB+L_AC；

Condition five, L_OB+L_AB>L_OC+L_AC。

The use method of the combined machining and manufacturing platform of the angle adjusting mechanism comprises the following steps:

step one, fixedly mounting a side auxiliary platform M1 on a mounting seat 3a2, and fixedly mounting a bottom end base 5d on a main platform M2 in a bonding, magnetic attraction or screwing mode;

step two, the angle adjusting range between the side auxiliary platform M1 and the main platform M2 is +/-90 degrees, the included angle between the side auxiliary platform M1 and the main platform M2 is adjusted, after the required angle is adjusted, the clamping rotating handle 4c is rotated downwards, the clamping positioning disc 2e6 is clamped by the positioning clamping wheel 4a, therefore, the rotating position of the floating type locking shaft 2 is preliminarily positioned, and whether the angle position between the two platforms meets the use requirement or not is observed;

step three, if the use requirement is not met, the clamping rotating handle 4c is rotated upwards, the clamping of the positioning clamping wheel 4a on the clamping positioning disc 2e6 is released, and the operation in the step two is repeated until the angle between the side auxiliary platform M1 and the main platform M2 is adjusted to a proper position;

step four, rotating the locking handle 1a to enable the friction type locking mechanism 1 to be in a locking state, enabling the locking friction disc 1f to be in contact with and clamped by the friction disc 2a1 on the friction locking shaft 2a, locking the rotating position of the floating type locking shaft 2 through friction force, and fixing the angle position between the side auxiliary platform M1 and the main platform M2;

step five, the position of the adjusting baffle plate 2d is adjusted, and the elastic force of the spring 2b acting on the friction disc 2a1 is adjusted, so that the positive pressure of the contact surface between the locking friction disc 1f and the friction disc 2a1 is changed; the two friction disks have proper friction force, so that the requirement of angular positioning between the side auxiliary platform M1 and the main platform M2 is met, and the platforms can slide relatively when stressed and overloaded in the use process, thereby playing a role in overload protection;

sixthly, when the positioning angle between the side auxiliary platform M1 and the main platform M2 needs to be released or changed, firstly, the locking handle 1a is rotated to enable the friction type locking mechanism 1 to be in an opening state, then, the clamping rotating handle 4c is rotated to release the clamping state of the clamping positioning disc 2e6 by the clamping wheel 4a, and the release of the positioning angle between the side auxiliary platform M1 and the main platform M2 is realized; if the angular position between the side sub-platform M1 and the main platform M2 needs to be reset, the above steps two, three, four and five can be repeated.

The invention has the following beneficial effects: the invention relates to an angle adjusting mechanism and a using method thereof, the angle adjusting mechanism is matched with a processing platform for use, the angle between a side auxiliary platform and a main platform is flexibly adjusted according to the actual working condition so as to meet the processing angle and space positioning requirements among different structural members, and meanwhile, the angle adjusting mechanism has the convenience and safety of adjusting operation, can realize the fixation of the mutual positions among the processing platforms and the continuous adjustment of the angles, and can also generate relative sliding when the platforms are stressed and overloaded in the using process so as to play a role in overload protection. In addition, the angle platform also has the advantages of simple structure, easy operation, low cost and the like.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a perspective view of the top end connector block;

FIG. 4 is a schematic perspective view of a bottom connector block;

FIG. 5 is a perspective view of the floating locking shaft;

FIG. 6 is an elevation view of the floating locking shaft;

fig. 7 (I) is a front view schematically showing the construction of the frictional locking shaft; (II) is a side view structure schematic diagram of the friction locking shaft;

FIG. 8 is a perspective view of the guide shaft;

FIG. 9 is a perspective view of the clamp positioning mechanism;

FIG. 10 is an elevation view of the clamp positioning mechanism;

FIG. 11 (I) is a schematic structural view showing an opened state of the frictional lock mechanism; (II) is a structural schematic diagram of the locking state of the friction type locking mechanism;

FIGS. 12 (I), (II) and (III) are schematic structural views of a frictional locking mechanism;

figure 13 is a schematic view of the upper swivelling levers;

FIG. 14 is a schematic structural view of a check link;

FIG. 15 is a schematic structural view of a middle connecting rod;

FIG. 16 is a schematic view of the structure of the bottom connector holder;

FIG. 17 is a simplified structural motion profile schematic of the friction locking mechanism;

FIG. 18 is a simplified structural sizing diagram of the friction locking mechanism;

FIG. 19 is a perspective view of a modular tooling platform embodying the present invention;

FIG. 20 is a side view of a modular tooling platform embodying the present invention;

FIG. 21 is a schematic view of a modular tooling platform embodying the present invention when the clamping and positioning mechanism is rotated to clamp;

FIG. 22 is a schematic view of a combined tooling and manufacturing platform configuration utilizing the present invention with a floating locking shaft locked;

in the figure, 1-a friction type locking mechanism, 1 a-a locking handle, 1 b-an upper rotating rod, 1 c-a middle connecting rod, 1 d-a locking connecting rod, 1 e-a friction disc adjusting rod, 1 f-a friction locking disc, 1 g-a bottom connecting seat, 1 h-a bottom connecting seat lower connecting shaft, 1 i-a middle connecting shaft, 1 j-a bottom connecting seat upper connecting shaft, 1 k-a top connecting shaft, 1b 1-an upper rotating rod end hole, 1b 2-an upper rotating rod middle hole, 1c 1-a middle connecting rod left hole, 1c 2-a middle connecting rod right hole, 1d 1-a locking connecting rod end hole, 1d 2-a locking connecting rod middle hole, 1d 3-a locking connecting rod front hole, 1g 1-a bottom plate, 1g 2-a vertical plate, 1g 3-a bottom connecting seat upper connecting hole, 1g 4-bottom connecting seat lower connecting hole, 2-floating type locking shaft, 2 a-friction locking shaft, 2 b-spring, 2 c-limit pin, 2 d-adjusting catch, 2 e-guiding transmission shaft, 2a 1-friction disc, 2a 2-floating shaft, 2a 3-limit long hole, 2a 4-guide groove, 2e 1-guide structure, 2e 2-limit pin hole, 2e 3-adjusting screw thread, 2e 4-spline, 2e 5-guide shaft, 2e 6-clamping positioning disc, 2e 7-fixing seat mounting part, 3-top connecting block, 3 a-top connecting mechanism, 3 b-rotating handle, 3 c-spline hole, 3a 1-connecting seat, 3a 2-mounting seat, 4-clamping positioning mechanism, 4 a-positioning clamping wheel, 4 b-clamping wheel shaft, 4 c-clamping rotating handle, 5-bottom end connecting block, 5 a-locking mechanism mounting block, 5 b-locking shaft fixing seat, 5 c-clamping positioning mechanism fixing seat, 5 d-bottom end base, M1-side auxiliary platform and M2-main platform.

Detailed Description

The embodiments of the present invention will be described with reference to fig. 1 to 18: the angle adjusting mechanism comprises a friction type locking mechanism 1, a floating type locking shaft 2, a top end connecting block 3, a clamping and positioning mechanism 4 and a bottom end connecting block 5, wherein the friction type locking mechanism 1 is installed on one side of the upper end of the bottom end connecting block 5, the clamping and positioning mechanism 4 is installed on the other side of the upper end of the bottom end connecting block 5, and the bottom end connecting block 5 is hinged and connected with the top end connecting block 3 through the floating type locking shaft 2; two ends of the floating type locking shaft 2 are respectively positioned and clamped through the clamping positioning mechanism 4 and the friction type locking mechanism 1. Bottom connecting block 5 include locking mechanism installation piece 5a, locking axle fixing base 5b, press from both sides tight positioning mechanism fixing base 5c and bottom base 5d, locking mechanism installation piece 5a, locking axle fixing base 5b and press from both sides tight positioning mechanism fixing base 5c all fixed mounting on bottom base 5d, be equipped with the hinge hole on the locking axle fixing base 5b, top connecting block 3 articulates through floating locking axle 2 and installs on locking axle fixing base 5b, also be equipped with the hinge hole on pressing from both sides tight positioning mechanism fixing base 5c, press from both sides tight positioning mechanism 4 and articulate and install on pressing from both sides tight positioning mechanism fixing base 5c, 1 fixed mounting of friction formula locking mechanism is on locking mechanism installation piece 5 a. So set up, bottom connecting block 5 is this guiding mechanism's load-bearing part, and locking mechanism installation piece 5a, locking axle fixing base 5b and clamping positioning mechanism fixing base 5c all install on bottom base 5d, and bottom base 5d also is the position that angle adjustment module and bottom mechanism or platform are connected, and modes such as its accessible bolt, draw-in groove, magnetism are inhaled, welding, bonding and corresponding mechanism or platform fixed connection. Be equipped with the hinge hole on the locking axle fixing base 5b, top connecting block 3 is articulated through floating locking axle 2 and is installed on locking axle fixing base 5 b. A hinge hole is also formed in the clamping and positioning mechanism fixing seat 5c, and the clamping and positioning mechanism 4 is hinged to the clamping and positioning mechanism fixing seat 5 c. The friction type locking mechanism 1 is fixedly arranged on the locking mechanism mounting block 5a, and two ends of the floating type locking shaft 2 are respectively positioned and clamped through the clamping positioning mechanism 4 and the friction type locking mechanism 1.

The top end connecting block 3 comprises a top end connecting mechanism 3a and a rotating handle 3b, the top end connecting mechanism 3a comprises a connecting seat 3a1 and a mounting seat 3a2, the mounting seat 3a2 is fixed on the upper surface of the connecting seat 3a1, one end of the rotating handle 3b is fixed on the lower surface of the connecting seat 3a1, the other end of the rotating handle 3b is provided with a spline hole 3c, and the spline hole 3c is an involute spline; the mounting seat 3a2 is fixedly connected with an external mechanism or a processing platform through bolts, clamping grooves, magnetic attraction, welding or adhesion. So set up, as shown in fig. 3, top connecting block 3's effect is connected with combination formula processing manufacturing platform, mode such as top coupling mechanism 3a accessible bolt, draw-in groove, magnetism are inhaled, welding, bonding and combination formula processing manufacturing mechanism or platform fixed connection, and splined hole 3c is connected with bottom connecting block 5 through spline 2e4 on the floating locking axle 2, and splined hole 3c adopts the involute spline, is convenient for cooperate with spline 2e 4.

As shown in fig. 5 to 8, the floating locking shaft 2 includes a friction locking shaft 2a, a spring 2b, a limit pin 2c, an adjusting catch 2d and a guiding transmission shaft 2 e. The friction locking shaft 2a comprises a friction disc 2a1, a floating shaft 2a2, limiting long holes 2a3 and guide grooves 2a4, the floating shaft 2a is of a hollow sleeve shaft structure, two limiting long holes 2a3 which are symmetrical in position are formed in the sleeve shaft side wall of the floating shaft 2a2, and two guide grooves 2a4 which are symmetrical in position are formed in the sleeve shaft inner wall of the floating shaft 2a 2; the friction disc 2a1 is fixedly mounted at one end of the floating shaft 2a2, the friction disc 2a1 is made of a ceramic friction material with a relatively hard texture; the guide transmission shaft 2e comprises a guide shaft 2e5 and a clamping positioning disc 2e6, and the clamping positioning disc 2e6 is fixed at the rear end of the guide shaft 2e 5; the guide shaft 2e5 comprises a guide structure 2e1, a limit pin hole 2e2, an adjusting thread 2e3, a spline 2e4 and a fixed seat mounting part 2e 7; the front part of the guide shaft 2e5 is provided with a guide structure 2e1 matched with the guide groove 2a4 and a limit pin hole 2e2 for installing a limit pin 2 c; an adjusting thread 2e3, a fixed seat mounting part 2e7, a spline 2e4 and a fixed seat mounting part 2e7 are sequentially arranged behind the guide structure 2e 1; the clamping positioning disc 2e6 is made of friction material with certain elasticity, and the spline 2e4 is an involute spline. So set up, the hinge hole on the locking axle fixing base 5b is passed to direction transmission shaft 2e, and the hinge hole position on fixing base installation department 2e7 and the locking axle fixing base 5b corresponds, and the two forms clearance fit for floating locking axle 2 can be at the downthehole circumferential direction of hinge on the locking axle fixing base 5 b. Spline 2e4 passes splined hole 3c, and the two cooperate through involute spline structure for top connecting block 3 can be with floating locking shaft 2 together circumferential direction rotation or fixed, adopts involute spline fit still to have characteristics such as bearing capacity is strong, easy self-centering, installation accuracy height in addition. The guide structure 2e1 of the front section of the guide shaft 2e5 is inserted in the floating shaft 2a2, and the guide structure 2e1 is matched with the guide groove 2a4, so that the floating shaft 2a2 can axially slide along the guide shaft 2e5, and can also transmit torque mutually when circumferential rotation occurs between the friction locking shaft 2a and the transmission shaft 2e, and the floating locking shaft 2 is connected into a whole when the circumferential rotation occurs. The limit pin 2c simultaneously passes through the limit long hole 2a3 and the limit pin hole 2e2, and the limit pin 2c is installed in the limit pin hole 2e2 in an interference fit manner; the long stopper hole 2a3 is engaged with the stopper pin 2c to restrict the sliding range of the floating shaft 2a 2. The adjusting baffle 2d is provided with an internal thread, and the adjusting thread 2e3 is provided with an external thread, which are connected by a thread structure. The spring 2b is simultaneously penetrated by the floating shaft 2a2 and the guide structure 2e1 located at the front section of the guide shaft 2e5, the front end of the spring 2b is propped against the friction disc 2a1 of the friction locking shaft 2a, the rear end of the spring 2b is propped against the adjusting catch 2d, and due to the fact that the adjusting catch 2d is in threaded connection with the adjusting thread 2e3, the pre-tightening force of the spring 2b on the friction locking shaft 2a on the friction disc 2a1 can be changed by adjusting the position of the adjusting catch 2 d.

The clamping and positioning mechanism 4 comprises a positioning clamping wheel 4a, a clamping wheel shaft 4b and a clamping rotating handle 4c, the positioning clamping wheel 4a is a non-circular wheel disc cam structure and is a circular wheel disc with an arc-shaped area cut off, a round hole is formed in the axis of the positioning clamping wheel 4a, the clamping rotating handle 4c is fixedly installed on the radial side wall of the positioning clamping wheel 4a, the clamping wheel shaft 4b penetrates through the round hole in the positioning clamping wheel 4a and a hinge hole in a clamping and positioning mechanism fixing seat 5c, and the clamping and positioning mechanism 4 is hinged on the bottom connecting block 5, so that the clamping and positioning mechanism 4 can rotate around the clamping wheel shaft 4 b. With such an arrangement, as shown in fig. 9 and 10, the positioning and clamping wheel 4a and the clamping and positioning disc 2e6 work cooperatively, and the pressure of the positioning and clamping wheel 4a on the clamping and positioning disc 2e6 can be adjusted according to the difference of the rotation angle of the positioning and clamping wheel 4a, so that the circumferential positioning of the guide transmission shaft 2e can be rapidly realized by using the friction force between the positioning and clamping wheel and the clamping and positioning disc.

As shown in fig. 11 and 12, the friction type locking mechanism 1 includes a locking handle 1a, an upper rotating rod 1b, a middle connecting rod 1c, a locking connecting rod 1d, a friction disc adjusting rod 1e, a friction locking disc 1f, a bottom connecting seat 1g, a bottom connecting seat lower connecting shaft 1h, a middle connecting shaft 1i, a bottom connecting seat upper connecting shaft 1j and a top connecting shaft 1 k; as shown in fig. 13, the upper rotating lever 1b is provided with an upper rotating lever end hole 1b1 and an upper rotating lever center hole 1b 2. As shown in FIG. 15, the middle connecting rod 1c is provided with a middle connecting rod left hole 1c1 and a middle connecting rod right hole 1c 2. As shown in fig. 14, the locking link 1d is provided with a locking link end hole 1d1, a locking link center hole 1d2, and a locking link front hole 1d 3. As shown in fig. 16, the bottom connecting seat 1g includes a bottom plate 1g1 and a vertical plate 1g2, the vertical plate 1g2 is provided with a bottom connecting seat upper connecting hole 1g3 and a bottom connecting seat lower connecting hole 1g4, and the bottom plate 1g1 can be fixedly mounted on the locking mechanism mounting block 5a through bolts, slots, magnetic attraction, welding or adhesion;

the bottom connecting seat 1g is connected with the upper rotating rod 1b through a bottom connecting seat lower connecting shaft 1h, and the bottom connecting seat lower connecting shaft 1h penetrates through an upper rotating rod end hole 1b1 and a bottom connecting seat lower connecting hole 1g 4; the tail end of the upper rotating rod 1b is rigidly connected with a locking handle 1a, the upper rotating rod 1b is connected with a middle connecting rod 1c through a top connecting shaft 1k in the middle, and the top connecting shaft 1k penetrates through a middle hole 1b2 of the upper rotating rod and a left hole 1c1 of the middle connecting rod; the middle connecting rod 1c is connected with the locking connecting rod 1d through a middle connecting shaft 1i, and the middle connecting shaft 1i penetrates through a middle connecting rod right hole 1c2 and a locking connecting rod middle hole 1d 2; the rear end of the locking connecting rod 1d is connected with the bottom connecting seat 1g through a bottom connecting seat upper connecting shaft 1j, and the bottom connecting seat upper connecting shaft 1j penetrates through a locking connecting rod end hole 1d1 and a bottom connecting seat upper connecting hole 1g 3; the front end of the locking connecting rod 1d is fixed with a locking friction disk 1f through a friction disk adjusting rod 1e, and the friction disk adjusting rod 1e penetrates through a locking connecting rod front hole 1d 3. Because the locking handle 1a is rigidly connected with the upper rotating rod 1b, the locking handle 1a can be rotated to drive other rod pieces and the rotating shaft to move through the upper rotating rod 1 b.

As shown in fig. 11, the friction type locking mechanism 1 can be simplified as a planar four-bar mechanism, the locking handle 1a is rigidly connected with the upper rotating rod 1B, the upper rotating rod 1B can be regarded as an active member, the rotating center of the lower connecting shaft 1h of the bottom connecting seat is set as a point O, the rotating center of the middle connecting shaft 1i is set as a point a, the rotating center of the top connecting shaft 1k is set as a point B, and the rotating center of the upper connecting shaft 1j of the bottom connecting seat is set as a point C; to friction type lockingThe mechanism 1 can have the following structure simplification: OB stands for upper portion dwang 1b, and AB stands for middle part connecting rod 1c, and AC stands for locking connecting rod 1d, and OC stands for the centre-to-centre spacing between two connecting axles on bottom connecting seat 1 g. As shown in FIG. 18, the length between the rotation center of the top connecting shaft 1k and the rotation center of the bottom connecting base lower connecting shaft 1h is L_OBThe length between the rotation center of the middle connecting shaft 1i and the rotation center of the top connecting shaft 1k is L_ABThe length between the rotation center of the middle connecting shaft 1i and the rotation center of the connecting shaft 1j on the bottom connecting seat is L_ACThe length of the rotating center of the lower connecting shaft 1h of the bottom connecting seat and the rotating center of the upper connecting shaft 1j of the bottom connecting seat is L_OC(ii) a In the friction type lock mechanism 1, the open state shown in fig. 11 (I) and the lock state shown in fig. 11 (II) are realized, and the friction type lock mechanism 1 needs to satisfy the following dimensional conditions:

condition one, L_OB>L_AC、L_OB>L_OCAnd L_OB>L_ABI.e. at L_AB、L_AC、L_OBAnd L_OCIn, L_OBLongest length

Condition two, L_AB≤L_AC；

Condition III, L_AB≤L_OC；

Condition four, L_OB＝L_AB+L_AC；

Condition five, L_OB+L_AB>L_OC+L_AC。

Fig. 17 is a schematic diagram of a simplified structural movement locus of the friction type locking mechanism 1, and as shown in (i) to (viii) of fig. 17, the locus of the friction type locking mechanism 1 in the process of rotating counterclockwise from the upper limit position (i) to the lower limit position (viii) with the upper rotating rod 1b as the driving member under an ideal condition without external obstruction is shown.

As shown in fig. 17 (iii), when OB is rotated to the position collinear with AB, OB and AB are both perpendicular to AC, the four-bar linkage is at the dead point position, the friction locking mechanism 1 is in the self-locking state, and at this time, the self-locking state of the friction locking mechanism 1 is not released no matter how external force is applied to AC.

When OB is rotated counterclockwise from the position shown in FIG. 17 (III), OB and AB are no longer collinear, and neither OB nor AB is perpendicular to AC, so that the self-locking state is released, and the position is shown in FIG. 17 (IV).

According to the scheme, the position (III) in the figure 17 is selected as a locking state, and the position IV in the figure 17 is selected as an opening state according to actual needs.

The actual state shown in fig. 17 (iii) is the locked state shown in fig. 11 (II), and in actual use, the operator rotates the locking handle 1a to rotate the upper rotating rod 1b to a position which is coincident and collinear with the middle connecting rod 1c and perpendicular to the locking connecting rod 1d, so that the friction type locking mechanism 1 is in the locked state, and the position is convenient for the operator to observe and use.

The actual state shown in fig. 17 (iv) is the opened state shown in fig. 11 (I), and in actual use, the operator rotates the locking handle 1a counterclockwise to make the upper rotating rod 1b no longer coincide with the middle connecting rod 1c, and the friction type locking mechanism 1 will be unlocked and in the opened state.

The use method of the angle adjusting module comprises the following steps:

as shown in fig. 19 to 22, a combined machining and manufacturing platform can be constructed based on an angle adjustment module, and the angle adjustment module can be used as a connection adjustment component between two platforms to adjust and fix a relative angle between the two platforms, and the angle adjustment range is ± 90 °. The combined machining and manufacturing platform constructed by the angle adjusting module can be used for additive manufacturing, subtractive manufacturing, equal-material manufacturing, assembly manufacturing and other occasions, parts, mechanisms, assemblies, devices, equipment and the like are fixed in a mode of bolts, clamping grooves, magnetic attraction, welding, adhesion and the like, the included angle between the two platforms is flexibly changed by adjusting the angle adjusting module according to actual working conditions, the requirements of space positioning and clamping in production are met, the characteristic of poor flexibility of working platforms such as traditional machining, manufacturing, assembly and the like is broken through, and smooth proceeding of the manufacturing and assembling process is guaranteed.

In practical use, the mounting seat 3a2 on the top connecting block 3 is used for connecting the fixed side auxiliary platform M1, the bottom connecting block 5 is used for connecting the fixed main platform M2, after the included angle between the two platforms is adjusted to a certain position, the clamping and positioning mechanism 4 is rotated to make one side end face of the clamping and positioning disk 2e6 contact with the positioning clamping wheel 4a, and the clamping and positioning disk 2e6 is clamped and positioned by the positioning clamping wheel 4a, as shown in fig. 21; under the action of the positioning clamping wheel 4a, the end surface of the other side of the clamping positioning disc 2e6 is contacted with the end surface of the locking shaft fixing seat 5b close to the side of the clamping positioning mechanism fixing seat 5c, so that the floating type locking shaft 2 is initially positioned by utilizing the friction force applied to the end surfaces of the two sides of the clamping positioning disc 2e 6. However, the clamping force of the clamping and positioning mechanism 4 on the floating type locking shaft 2 is limited, and only the included angle between the top connecting block 3 and the bottom connecting block 5 can be preliminarily positioned, so that other external forces applied to a platform connected with the angle adjusting mechanism cannot be borne. Therefore, the clamping and positioning mechanism 4 is suitable for trial adjustment of the positional relationship between the side auxiliary platform M1 for the top manufacturing process and the main platform M2 for the bottom manufacturing process in the working environment, so as to determine the optimum spatial angular position.

Then, the lock lever 1a is rotated to lock the friction lock mechanism 1, and the lock friction plate 1f is in contact with the friction plate 2a1, and the lock friction plate 1f is coaxial with the friction plate 2a1, as shown in fig. 18. During locking, the locking friction disc 1f gradually contacts the friction disc 2a1, pushing the friction disc 2a1 to slide the friction locking shaft 2a toward the locking shaft holder 5b under the cooperation of the guide structure 2e1 and the guide groove 2a 4. Since the clamping positioning disc 2e6 at the other end of the floating locking shaft 2 has been clamped by the clamping wheel 4a, the guide transmission shaft 2e cannot move axially, so the spring 2b is compressed. The elastic force generated by the spring 2b is used as the positive pressure on the contact surface of the locking friction disc 1f and the friction disc 2a1, and further, the friction force is generated to fix the circumferential rotation position of the floating type locking shaft 2. Because the spline 2e4 is in connection fit with the spline hole 3c through an involute spline, after the floating type locking shaft 2 is fixed, the position of the top end connecting block 3 is also fixed, and thus the fixing of the angle position between the side auxiliary platform M1 and the main platform M2 is realized.

The contact position of the locking friction disc 1f and the friction disc 2a1 when the friction type locking mechanism 1 is in a locking state can be changed by adjusting the length of the friction disc adjusting rod 1e penetrating through the front hole 1d3 of the locking connecting rod, and further the compression amount of the spring 2b is changed, so that the friction force borne by the floating type locking shaft 2 in the locking state can be adjusted.

In addition, the position of the adjusting baffle plate 2d can be adjusted, the spring 2b is further adjusted to provide elastic force, so that the friction force of the contact surface between the locking friction disc 1f and the friction disc 2a1 is in a proper range, and the two friction discs can slide relatively after the side auxiliary platform M1 or the main platform M2 is overloaded due to stress, so that the overload protection effect is achieved, and damage to a machine tool and other equipment is avoided.

After the manufacturing process is completed, the locking handle 1a is rotated downward to separate the locking friction disk 1f from the friction disk 2a1, so that the locking state of the angle adjusting module is released, and then the clamping and positioning mechanism 4 is rotated to release the positioning state of the angle adjusting module.

The clamping and positioning mechanism 4 cannot be rotated first, so that the guide transmission shaft 2e cannot slide axially under the action of the elastic force of the spring 2b under the condition that the locking friction disc 1f is in contact with the friction disc 2a1, and the locking friction disc 1f and the friction disc 2a1 cannot be locked due to insufficient friction force and slip occurs, so that the position of the side auxiliary platform M1 cannot be fixed and move, and further safety accidents are caused.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.