阅读说明：本技术 对工件进行曲面加工的自动切割系统 (Automatic cutting system for curved surface machining of workpiece ) 是由 赵富春 赵立夫 张韬 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种对工件进行曲面加工的自动切割系统,包括：动力组件；对待切割工件进行夹持的工装；进行切割处理的执行机构；所述动力输出端上设置有凸轮轴,且所述凸轮轴上间隔预设距离设置有相配合的第一凸轮面、第二凸轮面；所述执行机构通过相配合的第一传动组件安装在限定板上,所述第一凸轮面与第一传动组件的自由端接触,以在第一凸轮面转动过程中带动执行机构的空间位置上下变动。本发明提供一种对工件进行曲面加工的自动切割系统,其通过对设备的结构进行改进,使得其能适应工件异形曲面的加工,具有自动化程度高,精度高,结构简单,成本可控的效果。(The invention discloses an automatic cutting system for curved surface processing of a workpiece, which comprises: a power assembly; the tool is used for clamping a workpiece to be cut; an actuator for performing a cutting process; the power output end is provided with a cam shaft, and a first cam surface and a second cam surface which are matched with each other are arranged on the cam shaft at intervals of a preset distance; the actuating mechanism is arranged on the limiting plate through a first transmission assembly matched with the actuating mechanism, and the first cam surface is in contact with the free end of the first transmission assembly so as to drive the spatial position of the actuating mechanism to move up and down in the rotating process of the first cam surface. The invention provides an automatic cutting system for processing curved surfaces of workpieces, which can adapt to the processing of special-shaped curved surfaces of workpieces by improving the structure of equipment and has the effects of high automation degree, high precision, simple structure and controllable cost.)

1. An automatic cutting system for curved surface machining of a workpiece, comprising:

a power assembly;

the tool is connected with the power output end of the power assembly so as to clamp a workpiece to be cut;

an executing mechanism for cutting the workpiece;

the power output end is provided with a cam shaft, and a first cam surface and a second cam surface which are matched with each other are arranged on the cam shaft at intervals of a preset distance;

the actuating mechanism is arranged on the limiting plate through a first transmission assembly matched with the actuating mechanism, and the first cam surface is contacted with the free end of the first transmission assembly so as to drive the spatial position of the actuating mechanism to move up and down in the rotating process of the first cam surface;

the limiting plate is arranged on the fixing plate through a second transmission assembly matched with the limiting plate, and the first cam surface is contacted with the protruding part on the limiting plate so as to drive the space position of the actuating mechanism to change left and right in the rotating process of the second cam surface.

2. The automated cutting system for curving a workpiece according to claim 1, wherein the first conductive assembly is configured to include:

at least two first sliding rails arranged on the limiting plate;

the first sliding block is matched with the first sliding rail;

one end of the first sliding block is connected with the executing mechanism through a connecting mechanism, and the other end of the first sliding block is in surface contact with the first cam surface through a roller mechanism matched with the first sliding block.

3. The automated cutting system for curving a workpiece according to claim 2, wherein the attachment mechanism is configured to include:

the connecting plate is matched with the actuating mechanism;

a fixed section matched with the connecting plate;

one end of the fixed section, which is matched with the first sliding block, is provided with a first limiting groove into which the first sliding block can extend;

and the fixed section is also provided with a strip-shaped hole for adjusting the extending position of the first sliding block.

4. The automated cutting system for curving a workpiece according to claim 2, wherein the roller mechanism is configured to include:

the T-shaped transmission part is rotationally connected with the roller;

the mounting piece is matched with the first sliding block;

wherein, a fixing column matched with the mounting part is arranged on the platform of the transmission part;

a second limiting groove into which the first sliding block can extend is formed in the mounting piece;

the installation part is provided with an extension part on one side matched with the transmission part, and a limiting hole matched with the fixing column is formed in the extension part.

5. The automated cutting system for curving a workpiece according to claim 1, wherein the second drive assembly is configured to include:

the second sliding rail is arranged on the limiting plate;

the second sliding block is arranged on the fixed plate and matched with the second sliding rail;

the fixing plate is configured to be of an L-shaped structure, and the limiting plate is provided with at least one protruding guide piece at a position matched with one bent side of the fixing plate;

the fixing plate is characterized in that a through hole for the guide piece to penetrate through is formed in one bent side of the fixing plate, a knob matched with the guide piece is arranged at the position where the guide piece penetrates through the through hole, and a first elastic element matched with the guide piece is arranged on the guide piece.

6. The automated cutting system for curving a workpiece according to claim 1, wherein the tooling is configured to include:

the mounting seat is arranged on the camshaft;

the fixing shaft is arranged on the mounting seat and matched with a workpiece to be processed;

the clamping piece is movably arranged on the rack to limit the end part of the fixed shaft;

a support assembly disposed on the frame to define a longitudinal position of the stationary shaft;

the supporting assembly is configured to comprise a first bearing matched with the fixed shaft, and a U-shaped limiting piece arranged on the machine frame to limit the position of the first bearing, wherein the first bearing is arranged inside a groove body of the limiting piece through a matched fixing pin;

the fixed shaft is connected with the mounting seat through an adapter, and the adapter is connected with the mounting seat in a hinged mode;

the inner ring of the first bearing is provided with a through hole matched with a workpiece outer part structure, the adaptor is provided with a third limiting groove matched with the workpiece outer part structure, the workpiece is arranged concentrically with the fixed shaft, and the minimum inner diameter of the workpiece is configured to be larger than the diameter of the fixed shaft.

7. The automated cutting system for curving a workpiece of claim 6, wherein the cartridge is configured to include:

a connecting rod penetrating through the side wall of one side of the frame;

and the step seat is connected with the connecting rod through a second bearing and is provided with a limiting hole for inserting the fixing shaft.

8. The automatic cutting system for curving a workpiece according to claim 7, wherein the free end of the connecting rod is provided with a limiting ring;

a second elastic element is arranged on one side of the connecting rod matched with the step seat;

the top of the fixed shaft is provided with an outward extending protruding part, and the limiting hole is provided with an extending groove matched with the protruding part.

9. The automatic cutting system for curved surface processing of workpiece as claimed in claim 6, wherein the inner side walls opposite to the limiting members are respectively provided with a profiled sliding groove for limiting the position of the second bearing, and the outer side wall of the fixed shaft is provided with at least two profiled sliding blocks matched with the sliding grooves.

10. The automatic cutting system for curving a workpiece according to claim 1, wherein the power take-off is provided with a third bearing at a position extending through the frame, and the cam shaft is provided with a fourth bearing at a position engaging with a surface of the frame.

Technical Field

The invention relates to a processing device of an industrial pipe fitting. More particularly, the present invention relates to an automatic cutting system for curved surface machining of a workpiece.

Background

The processing of the special-shaped curved surface of a workpiece is a difficult problem for processing manufacturers of most industrial pipe fittings, curved surface processing is carried out on the workpiece through processing equipment in the prior art, but generally solid workpieces are cut, and for the pipe fitting processing, the existing equipment can not meet the processing requirements of manufacturers for processing different special-shaped curved surfaces generally, the existing processing equipment is complex, the daily maintenance of the processing manufacturers is generally completed by equipment manufacturers, the maintenance difficulty is increased, the processing of different surface shapes needs to be completed by the manufacturers for secondary upgrading of the equipment, so that the maintenance cost is uncontrollable, meanwhile, for the production equipment, the cost is high, the debugging difficulty of secondary upgrading and maintenance is high, the operability of the processing manufacturers of the pipe fittings is not strong, and the adaptability is not good.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an automatic cutting system for curved surface machining of a workpiece, comprising:

a power assembly;

the tool is connected with the power output end of the power assembly so as to clamp a workpiece to be cut;

an executing mechanism for cutting the workpiece;

the power output end is provided with a cam shaft, and a first cam surface and a second cam surface which are matched with each other are arranged on the cam shaft at intervals of a preset distance;

the actuating mechanism is arranged on the limiting plate through a first transmission assembly matched with the actuating mechanism, and the first cam surface is contacted with the free end of the first transmission assembly so as to drive the spatial position of the actuating mechanism to move up and down in the rotating process of the first cam surface;

the limiting plate is arranged on the fixing plate through a second transmission assembly matched with the limiting plate, and the first cam surface is contacted with the protruding part on the limiting plate so as to drive the space position of the actuating mechanism to change left and right in the rotating process of the second cam surface.

Preferably, the first conductive component is configured to include:

at least two first sliding rails arranged on the limiting plate;

the first sliding block is matched with the first sliding rail;

one end of the first sliding block is connected with the executing mechanism through a connecting mechanism, and the other end of the first sliding block is in surface contact with the first cam surface through a roller mechanism matched with the first sliding block.

Preferably, the connection mechanism is configured to include:

the connecting plate is matched with the actuating mechanism;

a fixed section matched with the connecting plate;

one end of the fixed section, which is matched with the first sliding block, is provided with a first limiting groove into which the first sliding block can extend;

and the fixed section is also provided with a strip-shaped hole for adjusting the extending position of the first sliding block.

Preferably, the roller mechanism is configured to include:

the T-shaped transmission part is rotationally connected with the roller;

the mounting piece is matched with the first sliding block;

wherein, a fixing column matched with the mounting part is arranged on the platform of the transmission part;

a second limiting groove into which the first sliding block can extend is formed in the mounting piece;

the installation part is provided with an extension part on one side matched with the transmission part, and a limiting hole matched with the fixing column is formed in the extension part.

Preferably, the second transmission assembly is configured to include:

the second sliding rail is arranged on the limiting plate;

the second sliding block is arranged on the fixed plate and matched with the second sliding rail;

the fixing plate is configured to be of an L-shaped structure, and the limiting plate is provided with at least one protruding guide piece at a position matched with one bent side of the fixing plate;

the fixing plate is characterized in that a through hole for the guide piece to penetrate through is formed in one bent side of the fixing plate, a knob matched with the guide piece is arranged at the position where the guide piece penetrates through the through hole, and a first elastic element matched with the guide piece is arranged on the guide piece.

Preferably, the tool is configured to include:

the mounting seat is arranged on the camshaft;

the fixing shaft is arranged on the mounting seat and matched with a workpiece to be processed;

the clamping piece is movably arranged on the rack to limit the end part of the fixed shaft;

a support assembly disposed on the frame to define a longitudinal position of the stationary shaft;

the supporting assembly is configured to comprise a first bearing matched with the fixed shaft, and a U-shaped limiting piece arranged on the machine frame to limit the position of the first bearing, wherein the first bearing is arranged inside a groove body of the limiting piece through a matched fixing pin;

the fixed shaft is connected with the mounting seat through an adapter, and the adapter is connected with the mounting seat in a hinged mode;

the inner ring of the first bearing is provided with a through hole matched with a workpiece outer part structure, the adaptor is provided with a third limiting groove matched with the workpiece outer part structure, the workpiece is arranged concentrically with the fixed shaft, and the minimum inner diameter of the workpiece is configured to be larger than the diameter of the fixed shaft.

Preferably, the clip is configured to include:

a connecting rod penetrating through the side wall of one side of the frame;

and the step seat is connected with the connecting rod through a second bearing and is provided with a limiting hole for inserting the fixing shaft.

Preferably, the free end of the connecting rod is provided with a limiting ring;

a second elastic element is arranged on one side of the connecting rod matched with the step seat;

the top of the fixed shaft is provided with an outward extending protruding part, and the limiting hole is provided with an extending groove matched with the protruding part.

Preferably, the inner side walls of the limiting members opposite to each other are respectively provided with a special-shaped sliding groove for limiting the position of the second bearing, and the outer side wall of the fixed shaft is provided with at least two special-shaped sliding blocks matched with the sliding grooves.

Preferably, the power output end is provided with a third bearing at a position penetrating through the frame, and the camshaft is provided with a fourth bearing at a position matched with the surface of the frame.

The invention at least comprises the following beneficial effects:

firstly, the invention improves the structure of the equipment, so that the equipment can adapt to the processing of the special-shaped curved surface of the workpiece, and has the effects of high automation degree, high precision, simple structure and controllable cost.

Secondly, the structure of each part is limited, so that the stability of the workpiece processing process is better, the method is easy to realize, and the product processing efficiency and yield are obviously improved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic diagram of an automatic cutting system according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a camshaft in combination with a roller assembly according to another embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the engagement of the clamping member, the support assembly and the stationary shaft according to another embodiment of the present invention;

FIG. 4 is an enlarged schematic view of another orientation of the clamping member, the support assembly and the stationary shaft in accordance with another embodiment of the present invention;

FIG. 5 is an enlarged schematic view of a camshaft in cooperation with a roller mechanism according to another embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a camshaft in contact with a roller and a limiting plate according to another embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of the engagement of the clip member with the fixed shaft according to another embodiment of the present invention;

FIG. 8 is a schematic side view of an automatic cutting system according to another embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of a second transmission assembly engaged with a limiting plate and a fixing plate according to another embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a roller mechanism engaged with a first slider according to another embodiment of the present invention;

FIG. 11 is a schematic view of a mount according to another embodiment of the invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It is to be understood that in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience in describing the present invention and for simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

Fig. 1 and 9 show an implementation form of an automatic cutting system for curved surface processing of a workpiece according to the present invention, which includes:

the power assembly 1 is configured to adopt a motor and a speed reducer or a coupling and the like matched with the motor so as to provide a rotating acting force required by the work of the tool;

the tool 2 is connected with the power output end of the power assembly to clamp a workpiece to be cut, and is used for supporting and limiting the workpiece to rotate at a high speed under the driving of the power mechanism;

the actuating mechanism 3 for cutting the workpiece can be set into a plasma or laser cutting gun head according to actual use requirements, and is used for cutting the workpiece through the cutting force generated by the actuating mechanism;

the power output end is provided with a cam shaft 4, the cam shaft is provided with a first cam surface 5 and a second cam surface 6 which are matched with each other at intervals of a preset distance, and in the component, through the structural design of the special-shaped surface of the cam shaft, an acting force can be applied to a component which is in contact with the cam shaft in the rotating process of the component, so that the contact component can be correspondingly adjusted in position according to the surface shape structure of each cam surface;

the actuating mechanism is arranged on a limiting plate 8 through a first transmission assembly 7 which is matched with the actuating mechanism, the first cam surface is contacted with the free end of the first transmission assembly so as to drive the spatial position of the actuating mechanism to move up and down in the rotating process of the first cam surface, in the structure, the actuating mechanism is arranged on the first transmission assembly, and through the position and the surface shape structural design, namely, the upper surface of the actuating mechanism has a special-shaped structure in the longitudinal direction, so that in the process of contacting the first transmission assembly with the upper surface, the position of the actuating mechanism in the longitudinal direction can be adjusted up and down due to the high position change on the upper surface of the actuating mechanism, so that the position to be cut of a workpiece is cut into a curved surface structure with a high and low surface shape;

the limiting plate is arranged on the fixing plate 10 through a second transmission assembly 9 matched with the limiting plate, the first cam surface is contacted with the protruding part on the limiting plate so as to drive the space position of the actuating mechanism to change left and right in the rotating process of the second cam surface, the left and right positions of the limiting plate arranged on the actuating mechanism can be adjusted under the action of the second transmission assembly, and further the position of the second cam surface and the surface shape structure are designed, namely the side surface of the limiting plate is provided with a special-shaped structure in the longitudinal direction, so that the horizontal position of the actuating mechanism can be adjusted left and right due to the surface shape of the side surface of the actuating mechanism in the process of contacting the side surface of the second transmission assembly, the requirement of workpiece cutting is met, and meanwhile, the tool cannot be damaged; provide rotary power through buncher in this scheme, so that the frock of being connected with the motor can drive the work piece rotatory, it is rotatory to drive the camshaft simultaneously, further rotatory drive plasma or the laser cutting rifle head through the camshaft reciprocates, accomplish the cutting process of the complicated space dysmorphism curve of work piece from this, operation requirement is all satisfied to its processing process automation degree and precision, and adopt camshaft mechanism job stabilization reliable, moreover, the steam generator is simple in structure, equipment manufacturing cost is low, effectively improve production efficiency and product yield.

1-2, in another example, the first conductive component is configured to include:

at least two first sliding rails 11 arranged on the limiting plate;

the first sliding block 12 matched with the first sliding rail has the advantages that in the structure, the sliding rail and sliding block matching mode is adopted, so that the working service life is long, the precision value is high, the structure is simple, and the cost is reliable;

wherein, one end of the first sliding block is connected with the actuating mechanism through a connecting mechanism 13, the other end of the first sliding block is contacted with the surface of the first cam surface through a roller mechanism 14 which is matched with the first sliding block, in the structure, the actuating mechanism is fixed on the first sliding block through the connecting mechanism, the other end of the first sliding block is provided with the roller mechanism which is matched with the first sliding block, and when the first cam surface rotates, the position height of the contact surface of the first sliding block and the roller mechanism is changed, so as to drive the first sliding block to slide up and down in the first sliding rail, the arrangement of the plurality of first sliding rails ensures better stability in the longitudinal space and ensures the stability of operation, in practical use, the outside of the first sliding block can be also provided with a clamping plate 15 which is matched with the first sliding block, the structure of the first sliding block is limited, and the sliding part of the first sliding block can be arranged into a special-shaped structure, so that the first sliding block has better structural stability during longitudinal movement.

As shown in fig. 3 and 9, in another example, the connection mechanism is configured to include:

a connecting plate 16 matched with the actuating mechanism;

a fixed section 17 matched with the connecting plate;

one end of the fixed section, which is matched with the first sliding block, is provided with a first limiting groove 18 into which the first sliding block can extend;

still be provided with on the canned paragraph and stretch into the position to first slider and carry out the bar hole 19 that adjusts, in this kind of structure, accomplish through the connecting plate and fix actuating mechanism, it can be connected through screw or welded mode, be provided with first restricted slot on the canned paragraph, make the one end of first slider partially insert to first restricted inslot portion, further adjust the degree of depth of stretching into of first slider through the bar hole, it is controllable to guarantee actuating mechanism's initial position, and then need cooperate with the processing of the work piece of different heights.

In another example, as shown in fig. 5, 10-11, the roller mechanism is configured to include:

a T-shaped transmission member 20 rotatably connected to the roller 45;

a mounting member 21 fitted with the first slider;

wherein, a fixing column 22 matched with the mounting part is arranged on the platform of the transmission part;

a second limiting groove 23 into which the first sliding block can extend is formed in the mounting piece;

the mounting piece is provided with an extending part 24 at one side matched with the driving piece, a limiting hole 25 matched with the fixing column is arranged in the extending part, in the structure, the roller is installed and limited through the free end extending out of the T-shaped transmission piece, the installation piece is used for realizing the switching communication between the first sliding block and the transmission piece, meanwhile, the cam is matched with the transmission piece in space to avoid, so that the smoothness of the cam when the cam works with the first cam surface is ensured, the interference is prevented, the working effect of the cam is prevented, the self weight of equipment is reduced, the abrasion and the damage of the cam when the cam works are reduced, and the second limiting groove is used for the second sliding block to extend into and be connected and fixed by a matched screw under the structure, and the fixed column and the limiting hole are matched to ensure the stability of the fixed column and the limiting hole in spatial connection and ensure the effective transmission of the position change of the second sliding block.

5-6, 8-9, in another example, the second transmission assembly is configured to include:

a second slide rail 26 provided on the defining plate;

the second sliding block 27 is arranged on the fixed plate and matched with the second sliding rail, and in the structure, the limiting plate can move left and right in space through the matching of the second sliding block and the second sliding rail so as to be matched with different processing processes and processing effects;

wherein the fixing plate is configured to be in an L-shaped structure, the limiting plate is provided with at least one protruding guide 28 at a position matched with one bending side of the fixing plate, and the structure is characterized in that the position of the horizontal movement of the limiting plate is guided by the matched guide arranged on the limiting plate;

the fixed plate bending side is provided with a through hole 29 through which the guide piece can penetrate, a matched knob 30 is arranged at the position where the guide piece penetrates through the through hole, a matched first elastic element 31 is arranged on the guide piece, in the structure, the second sliding block moves left and right under the action of the second cam surface to drive the limiting plate to move left and right in space, and further the horizontal position of the executing mechanism is enabled to move, the first mandatory element is used for limiting the movement stroke of the limiting plate, and meanwhile, after the limiting plate moves towards the bending side of the fixed plate, the limiting plate can return to the initial position or enter the next position under the action of elastic force, and further the smoothness and continuity of the work of the limiting plate are guaranteed so as to be matched with the specific workpiece processing surface shape.

2-4, in another example, the tooling is configured to include:

the mounting seat 32 arranged on the camshaft can be designed integrally with the camshaft or in a split type, and is provided with a through groove which can enable the hinged fixed shaft to move along the direction of the notch of the fixed shaft;

the fixing shaft 34 is arranged on the mounting seat and matched with a workpiece 33 to be processed, in the structure, the workpiece is supported by the fixing shaft, so that the structural stability of the hollow workpiece in a longitudinal space is better, meanwhile, in the processing process, the instability factor caused by the cutting of the end surface of the workpiece can not be caused, the stability of the workpiece in the continuous processing process is ensured, when in actual use, according to specific requirements, a plurality of sections of fixed threads can be arranged on the fixing shaft, a plurality of limiting blocks of which the external structures are matched with the inner wall of the workpiece can be arranged on the fixing shaft, namely, the limiting blocks rotate on the fixing shaft according to the length and the position of the workpiece, the workpiece is clamped on the fixing shaft through the external structures matched with the inner wall of the workpiece, the inner wall of the workpiece is supported at the same time, and when the workpiece is processed, the special-shaped surface and other positions of the workpiece can not deform, the outer side wall of the limiting block can be provided with a matched silica gel layer as required, so that the abrasion of the workpiece during insertion can be reduced, the acting force generated during the work of the workpiece can be absorbed, and the working stability of the workpiece can be ensured;

the clamping piece 35 is movably arranged on the rack to limit the end part of the fixed shaft, and in the structure, the clamping piece is clamped by the mounting shaft in the longitudinal direction, so that the spatial position of the fixed shaft cannot deviate from the cutting of a workpiece due to mechanical vibration generated by cutting or motor work in the machining process;

the supporting component 36 is arranged on the frame to limit the longitudinal position of the fixed shaft, and in the structure, a workpiece with a certain height is supported and limited in space through the supporting component, so that the stability of the workpiece in the processing process is ensured, and poor products caused by workpiece surface shaking due to overlong workpiece in work are prevented;

wherein the support assembly is configured to include a first bearing 37 matched with the fixed shaft and a U-shaped limiting piece 38 arranged on the frame to limit the position of the first bearing, the first bearing is arranged inside a groove body of the limiting piece through a matched fixed pin 39, in the structure, the U-shaped limiting piece is arranged in the frame through a matched thin plate, the rotatable fixed shaft is not limited when the whole body is overturned, and the fixed pin is used for limiting the space position of the fixed shaft after the fixed shaft reaches the designated position, and further through the action of the bearing, the fixed shaft can be clamped inside the limiting piece without influencing the rotation of the fixed shaft;

the fixed shaft is connected with the mounting seat through the adapter piece 40, the adapter piece is connected with the mounting seat in a hinged mode, and the fixed shaft can rotate as required through the function of the hinged adapter piece, so that a workpiece can be conveniently sleeved on the fixed shaft, and the workpiece can be taken out after the processing is finished;

the inner ring of the first bearing is provided with a through hole 41 matched with a workpiece outer part structure, the adaptor is provided with a third limiting groove (not shown) matched with the workpiece outer part structure, the workpiece is concentrically arranged with the fixed shaft, the minimum inner diameter of the workpiece is configured to be larger than the diameter of the fixed shaft, in the structure, the insertion and the fixation of the workpiece are facilitated by arranging the through hole matched with the workpiece outer structure inside the first bearing, for example, the workpiece adopts a flat pipe structure, when the workpiece is inserted into the through hole, the workpiece can be fixed without influencing the rotating fluency, meanwhile, the position of the workpiece can be limited when the fixed shaft is arranged on the adaptor through the structural design of the third limiting groove on the adaptor, and the third limiting groove can directly enlarge the diameter of the position of the fixed shaft or can be provided with a sinking groove which can limit the end face of the workpiece after enlargement, the stability of the structure matching of the workpiece fixing device is guaranteed, the diameter of the fixing shaft and the diameter of the workpiece are limited, the fixing shaft and the inner wall of the workpiece are in a preset distance, and the workpiece is prevented from being damaged in the machining process.

As shown in fig. 4 and 7, in another example, the clip is configured to include:

a connecting rod 42 penetrating through one side wall of the frame;

the step seat 43 connected with the connecting rod through the second bearing is provided with a limiting hole 44 for the fixing shaft to insert, in the structure, the clamping piece can be regarded as an upper tool matched with the tool and limited by the fixing shaft on the clamping piece, the workpiece is installed on the upper tool and the lower tool, so that the rotating motion precision value is guaranteed, and meanwhile, the clamping piece passes through the sectional structural design of the tool, so that when the workpiece needs to be taken out, the connecting rod is lifted upwards, the limiting hole in the step seat is separated from the fixing shaft, the structure can be disassembled, and after the workpiece is installed on the fixing shaft, the connecting rod is pressed downwards, so that the fixing shaft can be limited, and the stability of matching between the parts in working is guaranteed.

In another example, as shown in figure 7, the free end of the connecting rod is provided with a limiting ring 46;

a second elastic element 47 is arranged on one side of the connecting rod matched with the step seat;

the top of the fixed shaft is provided with an outward extending protruding part (not shown), the limiting hole is provided with an extending groove (not shown) matched with the protruding part, in the structure, the downward position of the connecting rod is controlled by the limiting ring, the connecting rod is prevented from being separated from the rack under the action of gravity after the fixed shaft is overturned, secondary installation is needed in next use, the upward position of the connecting rod can be limited by the structure of the step seat, the connecting rod has a restoring acting force under the action of the second elastic element, meanwhile, the stability of the fixed shaft can be suppressed under the initial acting force of the second elastic element, the reliability of connection limitation of the connecting rod can be ensured, when the connecting rod is actually used, a matched bearing can be arranged at the position where the connecting rod penetrates through the rack, and matched bearings can be arranged at the contact positions of the limiting ring and the second elastic element with the surface of the rack, to ensure that its rotation does not cause any interference.

In another example, the inner side walls of the limiting pieces opposite to each other are respectively provided with a special-shaped sliding groove (not shown) for limiting the position of the second bearing, the outer side wall of the fixed shaft is provided with at least two special-shaped sliding blocks (not shown) matched with the sliding grooves, in the structure, the special-shaped sliding groove oppositely arranged on the inner side of the upper limit piece can enable the special-shaped sliding block on the bearing to smoothly slide in, but when the second bearing on the fixed shaft turns over and enters the special-shaped sliding groove, the turning track is not horizontal, so the special-shaped sliding groove has a radian matched with the turning track of the second bearing in space to ensure the smoothness of the matching of the two, meanwhile, the stability between the structural parts is ensured, the phenomenon that the second bearing and the limiting part have small inner gap and are blocked unsmoothly is prevented, or the second bearing and the limiting part have large inner gap and cannot achieve the clamping effect.

In another example, the power output end is provided with a third bearing (not shown) at a position penetrating through the frame, the camshaft is provided with a fourth bearing (not shown) at a position matching with the surface of the frame, and in the structure, the third bearing and the fourth bearing are arranged so that the structure can not generate any interference between the rotation of the component and the frame, and according to different requirements, the plane bearing can be arranged so that the rotation of the component on the horizontal plane is not interfered, so that the rotation of the component in the longitudinal direction can not be influenced by the frame through the longitudinally arranged bearing.

The above scheme is merely illustrative of a preferred example, and is not limiting. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.