High-productivity gear shaping clamp

Abstract

A high-productivity gear shaping clamp comprises a base, the base is fixedly connected with a clamp body through a flange plate, a chuck matched with the clamp body is arranged in the clamp body, and a center hole communicated with the inner space of the base is formed in the center of the left end face of the base; a pull sleeve matched with the base is arranged in the base; a pull sleeve seat matched with the central hole is arranged at the left end of the pull sleeve; a chuck matched with the clamp body is arranged in the clamp body; the chuck is connected with the pull sleeve through a pull ring; a guide column is arranged in the center of the left side wall of the pull sleeve, and a guide hole communicated with the inner space of the pull sleeve is formed in the left end face of the guide column. A guide pipe matched with the guide hole is arranged in the guide hole, and the guide pipe and the chuck are coaxial. According to the high-productivity gear shaping clamp, it can be guaranteed that the clamping jaw can still complete discharging work when the movable stroke of the clamping jaw is insufficient, the automatic discharging effect is achieved, meanwhile, the efficient discharging efficiency is always kept, and finally high productivity is effectively achieved.

Description

Technical Field

[0001] The utility model relates to a gear shaping fixture, in particular to a high-production-capacity gear shaping fixture. Background Art

[0002] A gear shaping fixture is a fixture applied to a gear shaper. The gear shaping fixture can effectively fix a workpiece. At this time, a gear shaper cutter on the gear shaper will process gear teeth on the workpiece to complete gear shaping processing.

[0003] The lengths of the workpieces actually processed by the gear shaper are different. Among them, there are workpieces with longer lengths. The stroke between the clamping jaws on the gear shaper and the gear shaping fixture is fixed. When the length of the workpiece is greater than the distance between the clamping jaws and the gear shaping fixture, as the operator loads the workpiece into the gear shaping fixture, the clamping jaws will be unable to directly extract the workpiece from the gear shaping fixture after the gear shaping processing of the workpiece due to insufficient movable stroke of the clamping jaws themselves. As a result, the work of unloading the workpiece still needs to be completed manually. If the operator performs the unloading work for a long time, it is very easy to produce a sense of fatigue, which is not only difficult to maintain the unloading efficiency, but also the unloading efficiency will be further reduced over time, ultimately affecting the production capacity of workpiece processing. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a high-production-capacity gear shaping fixture, which can ensure that the clamping jaws can still complete the unloading work when the movable stroke of the clamping jaws is insufficient, realize the effect of automatic unloading, and always maintain a high unloading efficiency, ultimately effectively realizing high production capacity.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] The utility model discloses a high-production-capacity gear shaping fixture, which includes a base. The base is fixedly connected to a fixture body through a flange. A chuck matching with the fixture body is arranged inside the fixture body. A central hole communicating with the internal space thereof is arranged at the center of the left end face of the base. A draw sleeve matching with the base is arranged inside the base. A draw sleeve seat matching with the central hole is arranged at the left end of the draw sleeve. A chuck matching with the fixture body is arranged inside the fixture body. The chuck is connected to the draw sleeve through a pull ring. A guide post is arranged at the center of the left side wall of the draw sleeve. A guide hole communicating with the internal space of the draw sleeve is arranged at the left end face of the guide post. A guide tube matching with the guide hole is arranged inside the guide hole. The guide tube is coaxial with the chuck. A movable hole is arranged at the center of the draw sleeve seat. The guide post is located in the right part of the movable hole. A ring-shaped limiting part is arranged on the outer wall of the left end of the guide post. A connecting rod coaxial with the draw sleeve seat is arranged on the left side of the draw sleeve seat. A jacking structure matching with the limiting part is arranged at the right end of the connecting rod. A workpiece matching with the chuck is arranged inside the chuck. The connecting rod can move the workpiece to the right through the jacking structure and can expand the chuck outward to open.

[0007] The ejecting structure includes a pull shaft arranged at the right end of the connecting rod, and the pull shaft penetrates into the moving hole; an annular clamping groove is arranged on the outer wall of the right end of the pull shaft; a pull claw is sleeved outside the pull shaft; the left end of the pull claw has a left clamping portion matching the clamping groove; the right end of the pull claw is sleeved outside the left end of the guiding column; the right end of the pull claw has a right clamping portion fitting the right side wall of the limiting portion; there is a slack clearance between the right side wall of the right clamping portion and the left side wall of the pull sleeve; a pushing head is arranged at the center of the right end face of the pull shaft; there is an ejecting clearance between the right end face of the pushing head and the left end face of the guiding tube; several right spring grooves evenly distributed in a circle are arranged on the outer edge of the left end face of the pull ring; several left spring grooves opposite to the right spring grooves are arranged on the right side wall of the flange; a spring is arranged between the bottom of the left spring groove and the bottom of the right spring groove.

[0008] A center drill sleeve matching the inner hole of the flange is arranged in the inner hole of the flange; a connecting portion fitting the right side wall of the flange is arranged on the outer wall of the right end of the center drill sleeve; the connecting portion and the flange are fixed by several screws evenly distributed in a circle; an annular positioning portion extends inwards from the edge of the left end port of the center drill sleeve; a center drill matching the positioning portion is fixed inside the left part of the center drill sleeve, and the right end of the guiding tube passes through the center drill to the right; an annular positioning step is arranged on the left part of the center drill, and the positioning step fits the right side wall of the positioning portion; the right part of the center drill has a guiding conical surface, and the diameter of the guiding conical surface gradually decreases from left to right; the left end of the workpiece penetrates into the center drill sleeve to the left, and an auxiliary hole is arranged at the center of the left end face of the workpiece; the right end of the guiding tube penetrates into the auxiliary hole to the right; the edge of the left end hole of the auxiliary hole fits the guiding conical surface of the right part of the center drill.

[0009] Several pulling arms evenly distributed in a circle are arranged on the left end face of the pull ring; several through holes corresponding to the positions of the pulling arms are arranged on the flange; the left ends of the pulling arms penetrate to the left through the corresponding through holes; several clamping blocks evenly distributed in a circle are arranged on the outer wall of the right end of the pull sleeve; clamping grooves matching the clamping blocks are arranged on the inner wall of the left ends of the pulling arms; a moving groove matching the pull ring is arranged on the inner wall of the left end of the clamping body, and the moving groove is annular; the pull ring is located between the right side wall of the flange and the right side wall of the moving groove; the chuck is a rubber chuck; several connecting blocks evenly distributed in a circle are arranged on the outer wall of the left end of the chuck; several stop blocks corresponding to the positions of the connecting blocks are arranged on the inner wall of the right end port of the pull ring; an annular stop edge is arranged inside the right part of the pull ring; the connecting blocks are located between the stop blocks and the stop edge.

[0010] The outer wall of the chuck has an outer conical surface that is narrower on the left and wider on the right; the inner wall of the right end port of the chuck body is provided with an inner conical surface that fits the outer conical surface; an upper positioning chute is provided on the upper side of the inner conical surface; the outer wall of the upper side of the right end of the chuck body is provided with an upper positioning screw hole that communicates with its internal space; an upper positioning screw that matches it is screwed into the upper positioning screw hole, and the upper positioning screw penetrates downward into the upper positioning chute.

[0011] The outer wall of the lower side of the pull sleeve is provided with a lower positioning chute; the outer wall of the lower side of the base is provided with a lower positioning screw hole that communicates with its internal space; a lower positioning screw that matches it is screwed into the lower positioning screw hole, and the upper end of the lower positioning screw penetrates upward into the lower positioning chute.

[0012] The pull claw is composed of a number of pull claw plates evenly distributed in a circle; the left clamping part is arranged at the left end of the pull claw plate, and the right clamping part is arranged at the right end of the pull claw plate; a groove is provided on the outer wall of the left end of the pull claw plate; the grooves at the left ends of a number of pull claw plates evenly distributed in a circle enclose an annular embedding groove; an annular tension spring that matches it is provided in the embedding groove.

[0013] The outer wall of the left end of the center sleeve is provided with a number of pin holes that communicate with the inner holes of the positioning parts; the outer wall of the left end of the center is provided with a number of positioning holes corresponding to the positions of the pin holes; positioning pins that match it are provided in the pin holes, and the inner ends of the positioning pins are clamped in the positioning holes.

[0014] The beneficial effects of the present utility model are:

[0015] Compared with the prior art, the high-production gear shaper fixture adopting the structure of the present utility model can automatically eject the workpiece from the chuck by a certain stroke while the chuck releases the workpiece, thereby making up for the problem of insufficient stroke of the clamping jaws of the machine tool. After the workpiece actively moves out a certain stroke, the clamping jaws of the machine tool can easily clamp the machined workpiece to complete the blanking work, effectively avoiding the situation of low blanking efficiency caused by manual blanking, thereby always maintaining high blanking efficiency and achieving high production capacity. Description of the Drawings

[0016] Figure 1 is a sectional view of the high-production gear shaper fixture of the present utility model;

[0017] Figure 2 is Figure 1 an enlarged view of part A of

[0018] Figure 3 is a schematic structural diagram of the flange;

[0019] Figure 4 is a schematic structural diagram of the pull ring;

[0020] Figure 5 is a schematic structural diagram of the pull sleeve;

[0021] Figure 6 It is a schematic structural diagram of an angle of the pull claw;

[0022] Figure 7 It is a schematic structural diagram of another angle of the pull claw;

[0023] Figure 8 It is a schematic structural diagram of the high-production gear shaping fixture of the present utility model. Specific embodiments

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Please refer to Figures 1 to 8 , the present utility model provides a high-production gear shaping fixture, including a base 1, the base 1 is fixedly connected to a chuck body 3 through a flange 2, a chuck 4 matching with the chuck body 3 is arranged inside the chuck body 3, a central hole 5 communicating with the internal space is arranged at the center of the left end face of the base 1; a pull sleeve 6 matching with the base 1 is arranged inside the base 1; a pull sleeve seat 7 matching with the central hole 5 is arranged at the left end of the pull sleeve 6; a chuck 4 matching with the chuck body 3 is arranged inside the chuck body 3; the chuck 4 is connected to the pull sleeve 6 through a pull ring 8; a guide post 9 is arranged at the center of the left side wall of the pull sleeve 6, and a guide hole 10 communicating with the internal space of the pull sleeve 6 is arranged at the left end face of the guide post 9; a guide tube 11 matching with the guide hole 10 is arranged inside the guide hole 10, and the guide tube 11 is coaxial with the chuck 4; a movable hole 12 is arranged at the center of the pull sleeve seat 7, and the guide post 9 is located inside the right part of the movable hole 12; a ring-shaped limiting part 13 is arranged on the outer wall of the left end of the guide post 9; a connecting rod 14 coaxial with the pull sleeve seat 7 is arranged on the left side of the pull sleeve seat 7; a jacking structure matching with the limiting part 13 is arranged at the right end of the connecting rod 14; a workpiece 15 matching with the chuck 4 is arranged inside the chuck 4; the connecting rod 14 can move rightward through the jacking structure to make the workpiece 15 move rightward, and can make the chuck 4 expand and open outward.

[0026] The ejection structure includes a pull shaft 16 provided at the right end of the connecting rod 14, and the pull shaft 16 penetrates into the movable hole 12; an annular clamping groove 17 is provided on the outer wall of the right end of the pull shaft 16; a pull claw 18 is sleeved outside the pull shaft 16; the left end of the pull claw 18 has a left clamping portion 1804 matching the clamping groove 17; the right end of the pull claw 18 is sleeved outside the left end of the guide post 9; the right end of the pull claw 18 has a right clamping portion 1805 fitting against the right side wall of the limiting portion 13; there is a loose-tight clearance 21 between the right side wall of the right clamping portion 1805 and the left side wall of the pull sleeve 6; a pushing head 22 is provided at the center of the right end face of the pull shaft 16; there is an ejection clearance 23 between the right end face of the pushing head 22 and the left end face of the guide tube 11; a plurality of right spring grooves 24 evenly distributed in a circumferential manner are provided on the outer edge of the left end face of the pull ring 8; a plurality of left spring grooves 25 opposite to the right spring grooves 24 are provided on the right side wall of the flange 2; a spring 26 is provided between the bottom of the left spring groove 25 and the bottom of the right spring groove 24.

[0027] A center sleeve 27 matching the inner hole of the flange 2 is provided in the inner hole of the flange 2; a connecting portion 28 fitting against the right side wall of the flange 2 is provided on the outer wall of the right end of the center sleeve 27; the connecting portion 28 and the flange 2 are fixed by a plurality of screws 29 evenly distributed in a circumferential manner; an annular positioning portion 30 extends inward from the edge of the left end port of the center sleeve 27; a center tip 31 matching the positioning portion 30 is fixed inside the left portion of the center sleeve 27, and the right end of the guide tube 11 passes through the center tip 31 to the right; an annular positioning step 32 is provided on the left portion of the center tip 31, and the positioning step 32 fits against the right side wall of the positioning portion 30; a guide conical surface 33 is provided on the right portion of the center tip 31, and the diameter of the guide conical surface 33 gradually decreases from left to right; the left end of the workpiece 15 penetrates into the center sleeve 27 to the left, and an auxiliary hole 34 is provided at the center of the left end face of the workpiece 15; the right end of the guide tube 11 passes through the auxiliary hole 34 to the right; the edge of the left end hole of the auxiliary hole 34 fits against the guide conical surface 33 of the right portion of the center tip 31.

[0028] The left end face of the pull ring 8 is provided with a plurality of pull arms 35 which are evenly distributed in a circumferential manner; the flange 2 is provided with a plurality of through holes 36 corresponding to the positions of the pull arms 35; the left ends of the pull arms 35 pass leftward through the corresponding through holes 36; the outer wall of the right end of the pull sleeve 6 is provided with a plurality of clamping blocks 37 which are evenly distributed in a circumferential manner; the inner wall of the left end of the pull arm 35 is provided with a clamping groove 38 which is matched with the clamping block 37; the inner wall of the left end of the jig body 3 is provided with a moving groove 39 which is matched with the pull ring 8, and the moving groove 39 is annular; the pull ring 8 is located between the right side wall of the flange 2 and the right side wall of the moving groove 39; the chuck 4 is a rubber chuck; the outer wall of the left end of the chuck 4 is provided with a plurality of connecting blocks 40 which are evenly distributed in a circumferential manner; the inner wall of the right end port of the pull ring 8 is provided with a plurality of stop blocks 41 corresponding to the positions of the connecting blocks 40; an annular stop edge 42 is arranged in the right part of the pull ring 8; the connecting blocks 40 are located between the stop blocks 41 and the stop edge 42.

[0029] The outer wall of the chuck 4 has an outer conical surface 43 which is narrow on the left and wide on the right; the inner wall of the right end port of the jig body 3 is provided with an inner conical surface 44 which is attached to the outer conical surface 43; an upper positioning sliding groove 45 is arranged on the upper side of the inner conical surface 44; the outer wall of the upper side of the right end of the jig body 3 is provided with an upper positioning screw hole 46 which is communicated with its internal space; an upper positioning screw 47 which is matched with the upper positioning screw hole 46 is screwed in the upper positioning screw hole 46, and the upper positioning screw 47 penetrates downward into the upper positioning sliding groove 45.

[0030] The outer wall of the lower side of the pull sleeve 6 is provided with a lower positioning sliding groove 48; the outer wall of the lower side of the base 1 is provided with a lower positioning screw hole 49 which is communicated with its internal space; a lower positioning screw 50 which is matched with the lower positioning screw hole 49 is screwed in the lower positioning screw hole 49, and the upper end of the lower positioning screw 50 penetrates upward into the lower positioning sliding groove 48.

[0031] The pull claw 18 is composed of a plurality of pull claw plates 1801 which are evenly distributed in a circumferential manner; the left clamping part 1804 is arranged at the left end of the pull claw plate 1801, and the right clamping part 1805 is arranged at the right end of the pull claw plate 1801; a groove 1802 is arranged on the outer wall of the left end of the pull claw plate 1801; the grooves 1802 at the left ends of a plurality of pull claw plates 1801 which are evenly distributed in a circumferential manner enclose to form an annular embedding groove; an annular tension spring 1803 which is matched with the embedding groove is arranged in the embedding groove.

[0032] The outer wall of the left end of the center sleeve 27 is provided with a plurality of pin holes 53 which are communicated with the inner holes of the positioning part 30; the outer wall of the left end of the center 31 is provided with a plurality of positioning holes 54 corresponding to the positions of the pin holes 53; positioning pins 55 which are matched with the pin holes 53 are arranged in the pin holes 53, and the inner ends of the positioning pins 55 are clamped in the positioning holes 54.

[0033] The using method of the utility model is as follows:

[0034] The fixture body 3 and the flange 2 can be fixedly connected by a number of right screws 51 evenly distributed in a circle, and the base 1 and the flange 2 can be fixedly connected by a number of left screws 52 evenly distributed in a circle, so as to realize the fixation among the fixture body 3, the flange 2 and the base 1.

[0035] The force for the connecting rod 14 to move comes from the oil cylinder of the machine tool. When the piston rod of the oil cylinder drives the connecting rod 14 to move rightward, the drawbar 16 moves rightward synchronously. At this time, the ejecting head 22 arranged on the drawbar 16 moves rightward synchronously with the draw claw 18. When the draw claw 18 moves rightward, the right clamping part 1805 at the right end of the draw claw 18 no longer restricts the rightward movement of the draw sleeve 6 through the limiting part. At this time, under the elastic action of the spring 26 and with the flange 2 fixed, the pull ring 8 moves rightward. When the pull ring 8 moves rightward, the chuck 4 moves rightward accordingly, and the inner conical surface 44 fits with the outer conical surface 43 and is narrow on the left and wide on the right. After the chuck 4 moves rightward, the outer conical surface 43 on the outer wall of the chuck 4 is no longer squeezed by the inner conical surface 44. Since the chuck 4 is a rubber chuck, under the elastic action of the rubber, after losing the extrusion of the inner conical surface 44, the chuck 4 will automatically expand and open. At this time, the inner hole diameter of the chuck 4 for clamping the workpiece 15 becomes larger, and the workpiece 15 becomes loose accordingly.

[0036] As the ejecting head 22 on the drawbar 16 continuously moves rightward, the ejection gap 23 between the right end face of the ejecting head 22 and the left end face of the guide tube 11 continuously becomes smaller. Finally, the ejecting head 22 contacts the left end face of the guide tube 11. As the ejecting head 22 continues to move rightward, the ejecting head 22 will push the guide tube 11 to the right, and the guide tube 11 will move rightward stably along the track of the guide hole 10. Finally, the right end of the guide tube 11 and the center point 31 push the workpiece 15 to the right, so that the workpiece 15 moves rightward automatically and gradually separates from the chuck 4. As the workpiece 15 continuously moves rightward, the distance between itself and the jaws on the machine tool decreases accordingly. Finally, the workpiece 15 is pushed to the position where the jaws on the machine tool can complete the clamping stroke.

[0037] The ejection gap 23 is smaller than the tightening and loosening gap 21. Therefore, after the ejecting head 22 pushes the guide tube 11 into the guide hole 10 to a certain distance to the right, the right end face of the draw claw 18 will contact the left end face of the draw sleeve 6. At this time, the workpiece 15 has moved to the position where it can be clamped by the jaws on the machine tool. When the draw claw 18 continues to move rightward after contacting the left end face of the draw sleeve 6, the draw claw 18 will push the draw sleeve 6 to the left, and the draw sleeve 6 is connected to the chuck 4 through the pull ring 8. Finally, the chuck 4 is further moved to the right, and the chuck 4 is completely expanded and opened. At this moment, the jaws on the machine tool can clamp the right end of the workpiece 15 to complete the blanking.

[0038] During the actual loading process of workpiece 15, since it is manually loaded, it is very easy to tilt. In the case of workpiece eccentricity, the workpiece cannot enter the top sleeve 27. Eventually, when the workpiece 15 is loaded into the fixture, it cannot penetrate deep into the fixture, resulting in most of the workpiece 15 still being exposed to the outside, and ultimately leading to the situation where processing cannot be carried out. The staff can only complete the loading work of the workpiece 15 by constantly searching for the angle, which seriously affects the loading efficiency of the workpiece 15. The existence of the guide tube 11 and the top 31 can solve the above problems. When the fixture has not started to clamp the workpiece 15, the right end of the guide tube 11 penetrates out of the top sleeve 27 to the right under the right push of the push head 22, and there is enough moving space outside the top sleeve 27. As the workpiece 15 is loaded into the chuck 4 from left to right, first, the right end of the guide tube 11 is inserted into the auxiliary hole 34 at the left end of the workpiece 15, achieving a preliminary positioning effect through the right end of the guide tube 11, enabling the workpiece 15 to accurately enter the top sleeve 27. As the workpiece 15 continues to move leftward and penetrate deeper into the fixture, finally, the edge of the left end hole of the auxiliary hole 34 contacts the guiding conical surface 33 at the right part of the top 31. At this time, the guiding conical surface 33 plays a guiding role, enabling the workpiece 15 to be completely coaxial with the chuck 11. Meanwhile, the oil cylinder of the machine tool is started synchronously, and the claw 18 pulls the limiting part 13 to the right, ultimately realizing the leftward clamping of the chuck 4, effectively ensuring the loading efficiency of the workpiece 15.

[0039] As can be seen from the above, the utility model can automatically eject the workpiece 15 from the chuck 4 by a certain stroke while the chuck 4 releases the workpiece 15, thus making up for the problem of insufficient stroke of the clamping jaws of the machine tool. After the workpiece 15 actively moves out a certain stroke, the clamping jaws of the machine tool can easily clamp the processed workpiece 15 to complete the unloading work, effectively avoiding the situation of low unloading efficiency caused by manual unloading, and thus always maintaining a high unloading efficiency and achieving high production capacity.

[0040] The left end face of the pull ring 8 is provided with a number of pull arms 35 evenly distributed in a circle. The flange 2 is provided with a number of through holes 36 corresponding to the positions of the pull arms 35. The left ends of the pull arms 35 pass through the corresponding through holes 36 to the left. The outer wall of the right end of the pull sleeve 6 is provided with a number of clamping blocks 37 evenly distributed in a circle. The inner wall of the left end of the pull arm 35 is provided with a clamping groove 38 matching the clamping blocks 37. The inner wall of the left end of the fixture body 3 is provided with a moving groove 39 matching the pull ring 8. The moving groove 39 is annular. The pull ring 8 is located between the right side wall of the flange 2 and the right groove wall of the moving groove 39. This clamping method facilitates the disassembly and assembly between the pull ring 8 and the pull sleeve 6. Just rotate the pull arm 35 by a certain angle, and the clamping block 37 will be screwed out of the clamping groove 38. The left end of the pull arm 35 is in the gap between the adjacent clamping blocks 37. At this time, the pull ring 8 and the pull sleeve 6 can be easily separated.

[0041] The chuck 4 is a rubber chuck. A number of connecting blocks 40 are evenly distributed in a circle on the outer wall of the left end of the chuck 4. A number of stoppers 41 corresponding to the positions of the connecting blocks 40 are provided on the inner wall of the right end port of the pull ring 8. An annular retaining edge 42 is provided inside the right part of the pull ring 8. The connecting blocks 40 are located between the stoppers 41 and the retaining edge 42. This connection method facilitates the disassembly and assembly between the chuck 4 and the pull ring 8. Just rotate the pull ring 8 by a certain angle, and the connecting blocks 40 will rotate out from the gap between the stoppers 41 and the retaining edge 420. At this time, the separation between the chuck 4 and the pull ring 8 can be completed only through the gap between adjacent stoppers 41.

[0042] An upper positioning screw hole 46 is internally threaded with a matching upper positioning screw 47. The upper positioning screw 47 penetrates downward into the upper positioning sliding groove 45. The presence of the upper positioning screw 47 can play a positioning role when the chuck 4 moves left and right, effectively avoiding the situation where the chuck 4 rotates and separates from the pull ring 8 itself.

[0043] A lower positioning screw hole 49 is internally threaded with a matching lower positioning screw 50. The upper end of the lower positioning screw 50 penetrates upward into the lower positioning sliding groove 48. The presence of the lower positioning screw 50 can play a positioning role when the pull sleeve 6 moves left and right, effectively avoiding the situation where the pull sleeve 6 rotates and separates from the pull arm 35 at the left end of the pull ring 8.

[0044] The pull claw 18 is composed of a number of pull claw plates 1801 evenly distributed in a circle. A left clamping position part 1804 is provided at the left end of the pull claw plate 1801, and a right clamping position part 1805 is provided at the right end of the pull claw plate 1801. A groove 1802 is provided on the outer wall of the left end of the pull claw plate 1801. The grooves 1802 at the left ends of a number of pull claw plates 1801 evenly distributed in a circle enclose an annular embedding groove. An annular tension spring 1803 matching the embedding groove is provided in the embedding groove. This structural design of the pull claw 18 facilitates the disassembly and assembly of the pull claw 18, thus facilitating the maintenance and replacement of the pull claw 18.

[0045] A number of pin holes 53 communicating with the inner hole of the positioning part 30 are provided on the outer wall of the left end of the center sleeve 27. A number of positioning holes 54 corresponding to the positions of the pin holes 53 are provided on the outer wall of the left end of the center point 31. A positioning pin 55 matching the pin hole 53 is provided in the pin hole 53. The inner end of the positioning pin 55 is clamped in the positioning hole 54. This fixing method can effectively ensure the stability of the center point 31 and ensure the stability when the center point 31 moves.

Claims

1. A high-production gear shaping fixture, comprising a base, the base is fixedly connected to a chuck body through a flange, and a chuck matching the chuck body is arranged in the chuck body, characterized in that: A central hole communicating with its internal space is provided at the center of the left end face of the base; a pull sleeve matching with the base is arranged inside the base; a pull sleeve seat matching with the central hole is provided at the left end of the pull sleeve; a chuck matching with the fixture body is arranged inside the fixture body; the chuck is connected with the pull sleeve through a pull ring; a guide post is provided at the center of the left side wall of the pull sleeve, and a guide hole communicating with the internal space of the pull sleeve is provided at the left end face of the guide post; a guide tube matching with the guide hole is arranged inside the guide hole, and the guide tube is coaxial with the chuck; a movable hole is provided at the center of the pull sleeve seat, and the guide post is located inside the right part of the movable hole; an annular limiting part is provided on the outer wall of the left end of the guide post; a connecting rod coaxial with the pull sleeve seat is provided on the left side of the pull sleeve seat; a jacking structure matching with the limiting part is provided at the right end of the connecting rod; a workpiece matching with the chuck is arranged inside the chuck; the connecting rod can move the workpiece to the right through the jacking structure and can expand the chuck outward to open.

2. The high-production gear shaping fixture according to claim 1, wherein: The jacking structure includes a pull shaft arranged at the right end of the connecting rod, and the pull shaft penetrates into the movable hole; an annular clamping groove is provided on the outer wall of the right end of the pull shaft; a pull claw is sleeved outside the pull shaft; a left clamping part matching with the clamping groove is provided at the left end of the pull claw; the right end of the pull claw is sleeved outside the left end of the guide post; a right clamping part fitting with the right side wall of the limiting part is provided at the right end of the pull claw; there is a tightening gap between the right side wall of the right clamping part and the left side wall of the pull sleeve; a jacking head is provided at the center of the right end face of the pull shaft; there is a jacking gap between the right end face of the jacking head and the left end face of the guide tube; a plurality of right spring grooves evenly distributed in a circumferential manner are provided on the outer edge of the left end face of the pull ring; a plurality of left spring grooves opposite to the right spring grooves are provided on the right side wall of the flange; a spring is provided between the bottom of the left spring groove and the bottom of the right spring groove.

3. The high-production gear shaper fixture according to claim 2, characterized in that: A center sleeve matching with the inner hole of the flange is arranged inside the inner hole of the flange; a connecting part fitting with the right side wall of the flange is provided on the outer wall of the right end of the center sleeve; the connecting part and the flange are fixed through a plurality of screws evenly distributed in a circumferential manner; an annular positioning part extends inward from the edge of the left end port of the center sleeve; a center point matching with the positioning part is fixed inside the left part of the center sleeve, and the right end of the guide tube passes through the center point to the right; an annular positioning step is provided on the left part of the center point, and the positioning step fits with the right side wall of the positioning part; The right part of the center point has a guide conical surface, and the diameter of the guide conical surface gradually decreases from left to right; the left end of the workpiece penetrates into the center sleeve to the left, and an auxiliary hole is provided at the center of the left end face of the workpiece; the right end of the guide tube penetrates into the auxiliary hole to the right; the edge of the left end hole of the auxiliary hole fits with the guide conical surface of the right part of the center point.

4. A high-production gear shaping fixture according to claim 3, characterized in that: The left end face of the pull ring is provided with a plurality of pull arms evenly distributed in a circumferential manner; the flange plate is provided with a plurality of through holes corresponding to the positions of the pull arms; the left ends of the pull arms pass leftward through the through holes corresponding to them; the outer wall of the right end of the pull sleeve is provided with a plurality of clamping blocks evenly distributed in a circumferential manner; the inner wall of the left end of the pull arm is provided with a clamping groove matching the clamping block; the inner wall of the left end of the fixture body is provided with a moving groove matching the pull ring, and the moving groove is annular; the pull ring is located between the right side wall of the flange plate and the right side wall of the moving groove; the chuck is a rubber chuck; the outer wall of the left end of the chuck is provided with a plurality of connecting blocks evenly distributed in a circumferential manner; the inner wall of the right end port of the pull ring is provided with a plurality of stop blocks corresponding to the positions of the connecting blocks; a ring-shaped stop edge is arranged in the right part of the pull ring; the connecting blocks are located between the stop blocks and the stop edge.

5. The high-productivity gear shaper fixture according to claim 4, wherein: The outer wall of the chuck has an outer conical surface that is narrow on the left and wide on the right; the inner wall of the right end port of the fixture body is provided with an inner conical surface that fits the outer conical surface; an upper positioning sliding groove is arranged on the upper side of the inner conical surface; the outer wall of the upper side of the right end of the fixture body is provided with an upper positioning screw hole that communicates with its internal space; an upper positioning screw matching it is screwed in the upper positioning screw hole, and the upper positioning screw penetrates downward into the upper positioning sliding groove.

6. The high-production gear shaper fixture according to claim 4, wherein: The outer wall of the lower side of the pull sleeve is provided with a lower positioning sliding groove; the outer wall of the lower side of the base is provided with a lower positioning screw hole that communicates with its internal space; a lower positioning screw matching it is screwed in the lower positioning screw hole, and the upper end of the lower positioning screw penetrates upward into the lower positioning sliding groove.

7. The high-production gear shaper fixture according to claim 2, wherein: The pull claw is composed of a plurality of pull claw plates evenly distributed in a circumferential manner; the left clamping part is arranged at the left end of the pull claw plate, and the right clamping part is arranged at the right end of the pull claw plate; a groove is arranged on the outer wall of the left end of the pull claw plate; the grooves at the left ends of a plurality of pull claw plates evenly distributed in a circumferential manner enclose to form an annular embedding groove; an annular tension spring matching it is arranged in the embedding groove.

8. The high-production gear shaper fixture according to claim 3, wherein: The outer wall of the left end of the tip sleeve is provided with a plurality of pin holes communicating with the inner holes of the positioning parts; the outer wall of the left end of the tip is provided with a plurality of positioning holes corresponding to the positions of the pin holes; positioning pins matching them are arranged in the pin holes, and the inner ends of the positioning pins are clamped in the positioning holes.

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