阅读说明：本技术 一种车床用的车刀夹紧机构 (Lathe tool clamping mechanism for lathe ) 是由 曹自洋 马振武 殷振 吴石磊 卢金斌 苗情 戴晨伟 朱译文 潘杰 倪家伟 许威 于 2021-10-30 设计创作，主要内容包括：本发明属于车床设备技术领域,公开了一种车床用的车刀夹紧机构,包括：截面形状为环形的外架；可在所述外架内腔中升降的内架,且车刀沿轴向夹紧固定于所述内架中；连接于所述外架与内架之间的驱动组件,且所述驱动组件用于驱使内架在外架内腔中往复升降；所述驱动组件包括：纵向固定于所述内架外壁上的齿条；同心装配于所述外架内部的齿环,且齿环与外架转动配合；啮合连接于所述齿条与齿环之间的齿轮组；啮合于所述外架外壁上的齿辊,所述齿辊与齿环之间连接有限位杆,且通过限位杆的限定,使所述齿辊绕外架公转时驱使齿环自转；综上,通过在外架表壁上转动齿辊的方式即可实现内架的高度调节,整体结构简单稳定、调节操作方便。(The invention belongs to the technical field of lathe equipment, and discloses a turning tool clamping mechanism for a lathe, which comprises: the cross section of the outer frame is annular; the inner frame can be lifted in the inner cavity of the outer frame, and the turning tool is clamped and fixed in the inner frame along the axial direction; the driving assembly is connected between the outer frame and the inner frame and is used for driving the inner frame to reciprocate in the inner cavity of the outer frame; the drive assembly includes: the rack is longitudinally fixed on the outer wall of the inner frame; the gear ring is concentrically assembled in the outer frame and is in running fit with the outer frame; the gear set is meshed and connected between the rack and the gear ring; the toothed roller is meshed with the outer wall of the outer frame, a limiting rod is connected between the toothed roller and the toothed ring, and the toothed roller drives the toothed ring to rotate when revolving around the outer frame through the limitation of the limiting rod; in conclusion, the height of the inner frame can be adjusted by rotating the toothed roller on the surface wall of the outer frame, the whole structure is simple and stable, and the adjusting operation is convenient.)

1. A turning tool clamping mechanism for a lathe, comprising:

an outer frame (1) having a ring-shaped cross-sectional shape;

the inner frame (2) can be lifted in the inner cavity of the outer frame (1), and the turning tool is clamped and fixed in the inner frame (2) along the axial direction;

the driving component is connected between the outer frame (1) and the inner frame (2) and is used for driving the inner frame (2) to reciprocate in the inner cavity of the outer frame (1); the drive assembly includes:

the rack (3) is longitudinally fixed on the outer wall of the inner frame (2);

the toothed ring (4) is concentrically assembled in the outer frame (1), and the toothed ring (4) is in running fit with the outer frame (1);

the gear set (5) is connected between the rack (3) and the gear ring (4) in a meshed manner;

the toothed roller (6) is meshed with the outer wall of the outer frame (1), a limiting rod is connected between the toothed roller (6) and the toothed ring (4), and the toothed roller (6) is limited by the limiting rod to drive the toothed ring (4) to rotate when revolving around the outer frame (1).

2. The turning tool clamping mechanism for a lathe according to claim 1, wherein:

racks (3) are fixed on the outer walls of the two sides of the inner frame (2);

the gear sets (5) are symmetrically provided with two groups, the two groups of gear sets (5) are respectively meshed with the two racks (3), one group of gear sets (5) comprises a large gear, and the other group of gear sets (5) comprises two small gears.

3. The turning tool clamping mechanism for a lathe according to claim 2, wherein: two T-shaped frames (11) are symmetrically fixed at two ends of the outer frame (1), and the gear set (5) is rotatably installed on the T-shaped frames (11).

4. The turning tool clamping mechanism for a lathe according to claim 3, wherein: the T-shaped frame (11) comprises a transverse frame and a longitudinal frame, and the gear set (5) is rotatably arranged on the transverse frame; two limiting steps are symmetrically arranged at two ends of the inner frame (2), and the longitudinal frame is in sliding fit with the limiting steps.

5. The turning tool clamping mechanism for a lathe according to claim 1, wherein:

two sliding grooves are symmetrically formed in the outer frame (1), and the length of each sliding groove is 1/2 circumferences of the outer frame (1);

the gag lever post symmetry is equipped with two, two gag lever posts respectively with two spout sliding fit, and every the gag lever post includes interior pole (7), outer pole (8) and first spring (9), fluted roller (6) and interior pole (7) fixed connection, and the one end of interior pole (7) stretches into in outer pole (8), first spring (9) are injectd in outer pole (8) inside to be close to each other in messenger outer pole (8) and interior pole (7).

6. The turning tool clamping mechanism for a lathe according to claim 1, wherein: the length of outrigger (1) and inner tower (2) equals, ring gear (4) length is less than inner tower (2) length, and all the symmetry is fixed with two guide arms (21) at the top and the bottom of inner tower (2), guide arm (21) are located the one end of ring gear (4), and guide arm (21) outwards extend and run through outrigger (1).

7. The turning tool clamping mechanism for a lathe according to claim 6, wherein: the center position department of inner tower (2) offers the fixed orifices that is used for inserting the lathe tool, and is equipped with two splint (22) in the upper and lower bilateral symmetry of fixed orifices, and the lathe tool presss from both sides tightly to be fixed in between two splint (22).

8. The turning tool clamping mechanism for a lathe according to claim 7, wherein: two clamping components are symmetrically arranged in the inner frame (2), and the two clamping components are used for driving the two clamping plates (22) to synchronously move towards or oppositely move; the clamping assembly includes:

a rotatable lead screw (23);

n groups of sliding blocks (24) are sleeved on the screw rod (23) in a screwing mode, N is larger than or equal to 1, and the sliding blocks (24) are in sliding fit with the inner frame (2); the number of the group of sliding blocks (24) is two, and when the lead screw (23) rotates, the two sliding blocks (24) in each group approach to or depart from each other;

n connecting blocks fixed on the clamping plate (22), and two connecting rods (25) are symmetrically and rotatably connected between one group of sliding blocks (24) and one connecting block.

9. The turning tool clamping mechanism for a lathe according to claim 8, wherein:

transmission gears (231) are fixed on the two lead screws (23);

a transmission gear sleeve (232) is rotatably arranged in the inner frame (2), and the two transmission gears (231) are both meshed with the transmission gear sleeve (232);

a rotating handle (211) is rotatably arranged in one of the guide rods (21), the rotating handle (211) extends into the inner frame (2), and a bevel gear set (212) is connected between the rotating handle (211) and a corresponding screw rod (23).

10. The turning tool clamping mechanism for the lathe according to claim 7, wherein two limiting assemblies are symmetrically arranged on the left side and the right side of the fixing hole, and each limiting assembly comprises:

a limiting clamping block (26);

the second spring (27) is connected between the limiting clamping block (26) and the inner wall of the inner frame (2);

rotate connect in bull stick (28) of spacing clamp splice (26) one end, bull stick (28) and interior frame (2) normal running fit, and two bull sticks (28) in two spacing subassemblies make up and constitute V type structure, and the lathe tool inserts the fixed orifices from V type groove.

Technical Field

The invention belongs to the technical field of lathe equipment, and particularly relates to a turning tool clamping mechanism for a lathe.

Background

In the existing lathe equipment, a traditional four-station tool rest is generally used; when the traditional tool rest is used for clamping the turning tool, the position of the tool shank needs to be manually adjusted, the tool tip is attached to a workpiece, then a plurality of bolts are independently screwed down to lock the tool shank, the operation is troublesome, and the turning tool is low in dismounting efficiency.

In addition, with the above conventional tool holder, the center of the tool is fixed after the tool is clamped, and the tool is worn during a long machining process, so that the actual center of the tool becomes low, in which case, the conventional operation mode is: disassembling the cutter, arranging a gasket at the bottom of the cutter in a cushioning manner, and then clamping and fixing the cutter again, thereby achieving the effect of adjusting the center height of the cutter; this type of operation is cumbersome and when multiple shims are installed, the problem of poor tool clamping can be caused by the inability to fit precisely between the shims.

Disclosure of Invention

In view of the above, the present invention is directed to a lathe tool clamping mechanism for a lathe to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a turning tool clamping mechanism for a lathe, comprising:

the cross section of the outer frame is annular;

the inner frame can be lifted in the inner cavity of the outer frame, and the turning tool is clamped and fixed in the inner frame along the axial direction;

the driving assembly is connected between the outer frame and the inner frame and is used for driving the inner frame to reciprocate in the inner cavity of the outer frame; the drive assembly includes:

the rack is longitudinally fixed on the outer wall of the inner frame;

the gear ring is concentrically assembled in the outer frame and is in running fit with the outer frame;

the gear set is meshed and connected between the rack and the gear ring;

the toothed roller is meshed with the outer wall of the outer frame, a limiting rod is connected between the toothed roller and the toothed ring, and the toothed roller drives the toothed ring to rotate when revolving around the outer frame through the limitation of the limiting rod.

Preferably, racks are fixed on the outer walls of the two sides of the inner frame; the gear sets are symmetrically provided with two groups, the two groups of gear sets are respectively meshed with the two racks, one group of gear sets comprises a large gear, and the other group of gear sets comprises two small gears.

Preferably, two T-shaped frames are symmetrically fixed at two ends of the outer frame, and the gear set is rotatably mounted on the T-shaped frames.

Preferably, the T-shaped frame comprises a cross frame and a longitudinal frame, and the gear set is rotatably arranged on the cross frame; two limiting steps are symmetrically arranged at two ends of the inner frame, and the longitudinal frame is in sliding fit with the limiting steps.

Preferably, two sliding grooves are symmetrically formed in the outer frame, and the length of each sliding groove is 1/2 circumferences of the outer frame; the gag lever post symmetry is equipped with two, two gag lever posts respectively with two spout sliding fit, and every the gag lever post includes interior pole, outer pole and first spring, fluted roller and interior pole fixed connection, and the one end of interior pole stretches into to the outer pole in, first spring is injectd in the outer pole inside to be used for making outer pole and interior pole be close to each other.

Preferably, the length of the outer frame is equal to that of the inner frame, the length of the toothed ring is smaller than that of the inner frame, two guide rods are symmetrically fixed at the top and the bottom of the inner frame, the guide rods are located at one end of the toothed ring, and the guide rods extend outwards and penetrate through the outer frame.

Preferably, the central position department of inner tower offers the fixed orifices that is used for inserting the lathe tool, and is equipped with two splint in the upper and lower bilateral symmetry of fixed orifices, and the lathe tool presss from both sides tightly to be fixed in between two splint.

Preferably, two clamping assemblies are symmetrically arranged in the inner frame and are used for driving the two clamping plates to synchronously move towards or oppositely move; the clamping assembly includes:

a rotatable lead screw;

n groups of sliding blocks are sleeved on the screw rod in a screwing mode, N is more than or equal to 1, and the sliding blocks are in sliding fit with the inner frame; the number of the sliding blocks in one group is two, and when the screw rod rotates, the two sliding blocks in each group are close to or far away from each other;

and the N connecting blocks are fixed on the clamping plate, and two connecting rods are symmetrically and rotatably connected between one group of sliding blocks and one connecting block.

Preferably, transmission gears are fixed on the two lead screws; a transmission gear sleeve is rotatably arranged in the inner frame, and the two transmission gears are both meshed with the transmission gear sleeve; a rotating handle is rotatably arranged in one guide rod, the rotating handle extends into the inner frame, and a bevel gear set is connected between the rotating handle and a corresponding screw rod.

Preferably, the left and right sides symmetry of fixed orifices is equipped with two spacing subassemblies, and every spacing subassembly all includes:

a limiting clamping block;

the second spring is connected between the limiting clamping block and the inner wall of the inner frame;

rotate connect in the bull stick of spacing clamp splice one end, bull stick and interior frame normal running fit, and two bull sticks in two spacing subassemblies make up and constitute V type structure, and the lathe tool inserts the fixed orifices from V type groove.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, the driving assembly capable of driving the inner frame to lift up and down in the outer frame is arranged, and the driving assembly comprises the rack, the toothed ring, the gear set, the toothed roller and other structural assemblies, so that the height of the inner frame can be adjusted by rotating the toothed roller on the surface wall of the outer frame, the whole structure is simple and stable, the adjusting operation is convenient, and the cutter does not need to be detached.

(2) To above-mentioned drive assembly, be connected with the gag lever post that runs through the outrigger between fluted roller and ring gear, and this gag lever post can order about the ring gear and fluted roller through first spring and be close to each other, then usable fluted roller is stable spacing that realizes ring gear turned angle with the meshing of outrigger from this, and then guarantees the stability of inner tower lift location.

(3) Aiming at the inner frame, the top and the bottom of the inner frame are both provided with guide rods which penetrate through the outer frame, so that the lifting direction of the inner frame is effectively limited, and the stability during lifting is improved.

(4) To above-mentioned inner tower, press from both sides tight structure about its inside symmetry sets up and control limit structure, can effectively guarantee cutter center and inner tower center looks adaptation when pressing from both sides tight fixed cutter from this to further improve the precision of cutter when lift adjustment.

(5) To above-mentioned set up in the inside tight structure of upper and lower clamp of inner tower, mainly adopt structures such as lead screw, slider, connecting rod and splint to still utilize the cooperation formation synchronous drive of drive gear and transmission tooth cover to two lead screws from top to bottom, symmetry when having guaranteed the splint centre gripping from this on the one hand, on the other hand still makes to press from both sides tight operation more convenient.

Drawings

FIG. 1 is a front view of the present invention;

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

FIG. 3 is a cross-sectional view taken along the direction A in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction B in FIG. 1;

FIG. 5 is an enlarged view at C in FIG. 3;

FIG. 6 is an enlarged view of FIG. 4 at D;

FIG. 7 is an enlarged view at E in FIG. 4;

FIG. 8 is a schematic view of the inner frame of the present invention raised to its highest position;

FIG. 9 is a schematic view of the inner frame of the present invention lowered to the lowest position;

in the figure: an outer frame-1; t-shaped frame-11; an inner frame-2; a guide rod-21; a stem-211; bevel gear set-212; a clamping plate-22; a lead screw-23; a transmission gear-231; a transmission gear sleeve-232; a slide-24; a connecting rod-25; a limiting clamping block-26; a second spring-27; a rotating rod-28; a rack-3; a toothed ring-4; gear set-5; a toothed roller-6; an inner rod-7; an outer rod-8; a first spring-9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, the present invention provides a turning tool clamping mechanism for a lathe, and the turning tool clamping mechanism mainly includes the following structures:

an outer frame 1 having a ring-shaped cross-sectional shape; specifically, as can be seen from fig. 1, 8 and 9, the outer frame 1 may be connected to other supporting structures on the lathe, so as to achieve the fixed installation of the outer frame 1.

The inner frame 2 can be lifted in the inner cavity of the outer frame 1, and the turning tool is clamped and fixed in the inner frame 2 along the axial direction;

the driving component is connected between the outer frame 1 and the inner frame 2 and is used for driving the inner frame 2 to reciprocate in the inner cavity of the outer frame 1.

Above, regarding the inner frame 2:

the length of the outer frame 1 is equal to that of the inner frame 2, the length of the toothed ring 4 is smaller than that of the inner frame 2, two guide rods 21 are symmetrically fixed at the top and the bottom of the inner frame 2, the guide rods 21 are located at one end of the toothed ring 4, and the guide rods 21 extend outwards and penetrate through the outer frame 1; thereby effectively achieving the definition of the moving direction of the inner frame 2.

Further, a fixing hole for inserting a lathe tool is formed in the center of the inner frame 2, two clamping plates 22 are symmetrically arranged on the upper side and the lower side of the fixing hole, and the lathe tool is clamped and fixed between the two clamping plates 22. Wherein, two clamping components are symmetrically arranged in the inner frame 2 and are used for driving the two clamping plates 22 to synchronously move towards or oppositely; specifically, the clamping assembly includes:

a rotatable lead screw 23;

n groups of sliding blocks 24 are sleeved on the screw rod 23 in a screwing mode, N is larger than or equal to 1, and the sliding blocks 24 are in sliding fit with the inner frame 2; the number of the sliders 24 in one group is two, and when the screw 23 rotates, the two sliders 24 in each group approach or depart from each other;

n connecting blocks fixed on the clamping plate 22, and two connecting rods 25 are symmetrically and rotatably connected between one group of sliding blocks 24 and one connecting block;

transmission gears 231 are fixed on both the two lead screws 23;

a transmission gear sleeve 232 is rotatably arranged in the inner frame 2, and the two transmission gears 231 are both meshed with the transmission gear sleeve 232;

a rotating handle 211 is rotatably mounted in one of the guide rods 21, the rotating handle 211 extends into the inner frame 2, and a bevel gear set 212 is connected between the rotating handle 211 and a corresponding one of the lead screws 23.

In summary, the turning tool clamping principle is realized by using the structure disclosed by the inner frame 2 as follows:

insert the lathe tool handle in the fixed orifices of frame 2 central point department of putting, rotate turning handle 211 to this drives lead screw 23 that corresponds with it through bevel gear set 212 and rotates, lead screw 23 forms screw drive at the rotation in-process with slider 24, makes two sliders 24 in every group be close to each other from this, thereby makes the contained angle between two connecting rods 25 that every group slider 24 corresponds reduce, and then orders about splint 22 and keep away from corresponding lead screw 23. Simultaneously with the movement, the screw 23 drives the transmission gear 231 to rotate, so as to drive the transmission gear sleeve 232 to rotate, further drive the other transmission gear 231 and the screw 23 to rotate, and realize the mutual approaching of the two clamping plates 22 based on the same movement.

In summary, the two clamping plates 22 approach each other to realize the symmetrical clamping of the turning tool in the up-down direction.

In a still further aspect of the present invention,

be equipped with two spacing subassemblies in the left and right sides symmetry of fixed orifices, and every spacing subassembly all includes:

a limiting clamp block 26;

a second spring 27 connected between the limiting clamp block 26 and the inner wall of the inner frame 2;

the rotating rod 28 is rotatably connected to one end of the limiting clamping block 26, the rotating rod 28 is in rotating fit with the inner frame 2, the two rotating rods 28 form a V-shaped structure, and the turning tool is inserted into the fixing hole from the V-shaped groove.

By last, and combine fig. 3 to know, when the lathe tool handle of a knife inserted to the fixed orifices, two bull sticks 28 all were the tilt state, and the handle of a knife began to insert from the below that fig. 3 shows, make two bull sticks 28 symmetry to both sides rotation based on the restriction of handle of a knife from this, and then drive two spacing clamp splice 26 and open, accomplish inserting the back until the handle of a knife, two spacing clamp splice 26 can be injectd respectively in the left and right sides of handle of a knife, with this spacing of realizing the handle of a knife left and right sides direction, and realize the further clamp of handle of a knife under the compression resilience of second spring 27.

In conclusion, the two clamping plates 22 realize the symmetrical clamping of the turning tool in the vertical direction, the two limiting clamping blocks 26 realize the symmetrical clamping of the turning tool in the left-right direction, and the center of the turning tool is effectively ensured to correspond to the center of the inner frame 2.

In addition, the driving assembly includes:

a rack 3 longitudinally fixed on the outer wall of the inner frame 2;

the toothed ring 4 is concentrically assembled in the outer frame 1, and the toothed ring 4 is in running fit with the outer frame 1;

a gear set 5 engaged and connected between the rack 3 and the ring gear 4;

the toothed roller 6 is meshed with the outer wall of the outer frame 1, a limiting rod is connected between the toothed roller 6 and the toothed ring 4, and the toothed roller 6 is limited by the limiting rod to drive the toothed ring 4 to rotate when revolving around the outer frame 1.

As described above

Two sliding grooves are symmetrically formed in the outer frame 1, and the length of each sliding groove is 1/2 circumferences of the outer frame 1;

the gag lever post symmetry is equipped with two, two gag lever posts respectively with two spout sliding fit, and every gag lever post includes interior pole 7, outer pole 8 and first spring 9, fluted roller 6 and interior pole 7 fixed connection, and in the one end of interior pole 7 stretched into to outer pole 8, first spring 9 was injectd in outer pole 8 insidely to be used for making outer pole 8 and interior pole 7 be close to each other.

From the above, the principle of using the above disclosed structure to realize the height adjustment of the inner frame 2 is as follows:

the gear roller 6 is pulled towards the direction far away from the outer frame 1, so that the gear roller 6 is disengaged from the outer frame 1, in the state, the gear roller 6 moves anticlockwise, the gear roller 6 revolves around the outer frame 1, the gear ring 4 is pulled by the limiting rod to rotate anticlockwise in the revolution process, the gear set 5 is driven by the rotation of the gear ring 4 to rotate, the gear set 5 drives the rack 3 to ascend, the inner frame 2 is driven to ascend, and the height of the inner frame 2 is adjusted. Otherwise, the inner frame 2 can be driven to descend.

Accomplish above-mentioned regulation back, move back fluted roller 6, with this make fluted roller 6 and outrigger 1 meshing, the distance between interior pole 7 and the outer pole 8 that corresponds reduces, and still can order about outer pole 8 and interior pole 7 and be close to each other under the resilience of first spring 9, and then order about fluted roller 6 and ring gear 4 and be close to each other, realize fluted roller 6 and outrigger 1's stable meshing from this, thereby can utilize the meshing of fluted roller 6 to guarantee the stability of ring gear 4 rotational positioning, and then effectively guarantee the stability of inner tower 2 lift location. In addition, as can be seen from fig. 2, the lifting distance scale can be arranged on the surface wall of the outer frame 1, so that accurate visual adjustment can be conveniently realized.

Further, in order to improve the stability of the matching and driving among the structures:

two T-shaped frames 11 are symmetrically fixed at two ends of the outer frame 1, and each T-shaped frame 11 comprises a transverse frame and a longitudinal frame;

racks 3 are fixed on the outer walls of the two sides of the inner frame 2;

two sets of gear sets 5 are symmetrically arranged, the two sets of gear sets 5 are respectively meshed with the two racks 3, one set of gear sets 5 comprises a large gear, and the other set of gear sets 5 comprises two small gears; specifically, the gear set 5 is rotatably mounted on the cross frame;

two limiting steps are symmetrically arranged at two ends of the inner frame 2, and the longitudinal frame is in sliding fit with the limiting steps.

Therefore, the gear ring 4 can drive the two sides of the inner frame 2 to synchronously lift in the rotating process, and the T-shaped frame 11 is used for realizing the stable installation of the gear set 5.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.