Gear fixing tool
Through the combined structure of the placing seat, tie rod and support sleeve, the mechanical automatic clamping of the gear is achieved, which solves the problems of low manual clamping efficiency and unstable fixation in the prior art, and improves the stability and accuracy of gear processing.
Patent Information
- Application Number
- CN202422170918.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing gear milling edge fixing tooling relies on manual clamping, which is inefficient and unstable, resulting in gear processing deviations and cannot meet the high reliability requirements.
The placing seat, tie rod and support sleeve structure is adopted to automatically clamp the gears through mechanical force, and the combination of round table and pressing parts is used to achieve stable fixing, avoiding manual manual operation.
It improves the degree of automation and stability of gear fixation, ensures machining accuracy, avoids gear movement during processing, and improves machining yield.
Smart Images
Figure CN223172043U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear processing, in particular to a gear fixing tooling. Background Art
[0002] Gear transmission is a common transmission method in people's lives and is widely used. Some gears are used in particularly harsh working conditions, requiring operation under continuous impact, vibration, and overload, and with a service life requirement of more than 15 years. This places higher requirements on the reliability of gears, and thus also higher requirements on the grinding and processing of gears. Among them, milling the edges is a key processing procedure. When milling the edges of a gear, it needs to be firmly fixed. Otherwise, once the gear moves, even if it is only a very small movement, it will cause the processed teeth to deviate from the standard parts. After the gear processing has deviations, it cannot be meshed and matched with other gears during use, that is, the gear becomes a waste part.
[0003] The existing milling edge fixing tooling usually includes a base, a limiting shaft provided on the base, and a pressing block screwed on the limiting shaft. The gear is placed on the base with the limiting shaft passing through the middle hole of the gear, and then the pressing block is screwed on the limiting shaft to cooperate with the base to fix the gear. However, this fixing method is realized by manual clamping by workers, with very low efficiency. Moreover, the hand strengths of different workers are different, and the clamping degrees on the gears are also different, easily causing problems such as unstable gear fixing and gear rotation during processing. Summary of the Utility Model
[0004] Aiming at the deficiencies of the above-mentioned existing technologies, the technical problem to be solved by the utility model is: to provide a gear fixing tooling.
[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a gear fixing tooling, including a placement seat, a pull rod, and a support sleeve. The support sleeve is detachably provided on the placement seat. The placement seat and the support sleeve are jointly provided with a through groove. The outer diameter of the pull rod matches the inner diameter of the through groove and slides through the through groove along the length direction of the through groove. The lower end of the pull rod extends out of the placement seat and is connected to an external power device. The upper end of the pull rod extends out of the support sleeve and is provided with a frustum. The diameter of the lower end of the frustum is the same as the diameter of the pull rod, and the diameter of the frustum gradually increases from bottom to top. The support sleeve is provided with a slot along its own axis. The slot communicates with the through groove and radially penetrates the support sleeve.
[0006] Further, the support sleeve and the placement seat are coaxially arranged. The support sleeve includes a first segment and a second segment provided at the upper end of the first segment. The second segment is cylindrical and has an outer diameter smaller than that of the first segment, and a stepped surface is formed between the second segment and the first segment.
[0007] Further, the diameter of the first segment gradually increases from top to bottom.
[0008] Further, the placement seat includes a first seat body and a second seat body provided on the upper part of the first seat body. The lower end of the second seat body is detachably connected to the first seat body, and the upper end of the second seat body is detachably connected to the support sleeve.
[0009] Further, the first seat body includes a bottom plate, an intermediate plate, and a plurality of support rods. The bottom plate and the intermediate plate are both horizontally arranged and coaxial. A first groove is formed at the upper end of the intermediate plate. A plurality of the support rods are all provided between the bottom plate and the intermediate plate, and each support rod is inclined from the center outwards from top to bottom;
[0010] A first convex edge is formed by axially protruding from the lower end of the second seat body. A first fixing bolt is provided between the first convex edge and the intermediate plate. The lower end of the second seat body has a first limiting block that is snap-fitted with the first groove.
[0011] Further, a second groove is formed at the upper end of the second seat body. A second convex edge is formed by circumferentially protruding from the lower end of the first segment. A second fixing bolt is provided between the second convex edge and the second seat body. The support sleeve further includes a third segment provided at the lower end of the first segment, and the third segment is matched with the inner diameter of the second groove so as to be able to be clamped therein.
[0012] Further, a convex platform is provided at the upper end of the frustum. The outer diameter of the convex platform is smaller than the outer diameter of the second segment. A pressing member is provided on the convex platform. The pressing member is detachably connected to the convex platform. The pressing member cooperates with the step surface to axially limit the gear to be processed.
[0013] Further, the horizontal cross-section of the convex platform is a regular polygon. The pressing member includes a pressing block and a cylinder. The cylinder is provided on the lower end surface of the pressing block, and the outer diameter of the cylinder is matched with the inner diameter of the gear. A third groove matching the convex platform is formed in the middle of the cylinder so as to be able to be engaged with the convex platform. A fixing member is provided between the cylinder and the convex platform.
[0014] Further, the fixing member includes a second limiting block, a clamping block, and an elastic member. A fourth groove is recessed in the inner wall of the third groove in the horizontal direction. The second limiting block is slidably provided in the fourth groove. The elastic member is provided between the second limiting block and the bottom wall of the fourth groove. The clamping block is provided at one end of the second limiting block away from the elastic member and extends out of the fourth groove. A clamping groove for the clamping block to be inserted into is formed on the convex platform.
[0015] Further, the elastic member is a spiral spring.
[0016] A gear fixing tooling of the utility model has at least the following beneficial effects: The to-be-processed gear is fixed from the inside out by means of a round table expanding a support sleeve, with good fixing effect and not easy to damage the gear. At the same time, the round table is driven by an external power device, using mechanical force to replace manual clamping of the gear by workers, with high automation and better fixing stability. At the same time, a pressing member capable of pressing and fixing the gear is also provided on the round table, further improving the fixing stability of the gear, effectively avoiding the problem of unstable gear fixing, and ensuring the processing yield of the gear. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the illustrative embodiments and descriptions thereof are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:
[0018] Figure 1 is a schematic structural diagram of an embodiment of a gear fixing tooling of the utility model;
[0019] Figure 2 is Figure 1 a partial structural diagram of part A in
[0020] Figure 3 is a top view of a support sleeve in a gear fixing tooling of the utility model;
[0021] Figure 4 is a structural schematic of a pressing member in a gear fixing tooling of the utility model Figure 1 ;
[0022] Figure 5 is a structural schematic of a pressing member in a gear fixing tooling of the utility model Figure 2 ;
[0023] Figure 6 is a cross-sectional structural diagram of a pressing member in a gear fixing tooling of the utility model.
[0024] The meanings of the reference numerals in the drawings are as follows:
[0025] Placement base 1, first base body 11, bottom plate 111, partition plate 112, support rod 113, first groove 114, second base body 12, second groove 121, first flange 13, first fixing bolt 14, first limiting block 15, support sleeve 2, first segment 21, second segment 22, second flange 23, second fixing bolt 24, step surface 25, slot 26, third segment 27, pull rod 3, ejector rod 31, intermediate rod 32, bottom rod 33, frustum 34, third fixing bolt 35, fourth fixing bolt 36, boss 37, through slot 4, pressing member 5, pressing block 51, cylinder 52, third groove 53, fixing member 54, second limiting block 541, clamping block 542, elastic member 543, fourth groove 544, third flange 545, clamping slot 546, positioning block 55, gear 6, vertical slot 61. Detailed implementation manner
[0026] The present utility model will be further described below in conjunction with the accompanying drawings.
[0027] Please refer to Figure 1 , Figure 2 and Figure 3 , a gear fixing tooling of the present utility model includes a placement base 1, a pull rod 3 and a support sleeve 2. The support sleeve 2 is detachably arranged on the placement base 1. A through slot 4 is commonly formed through the axial centers of the placement base 1 and the support sleeve 2. The outer diameter of the pull rod 3 matches the inner diameter of the through slot 4 and the pull rod 3 is slidably inserted into the through slot 4 along the length direction of the through slot 4. The lower end of the pull rod 3 extends out of the placement base 1 and is connected to an external power device. The upper end of the pull rod 3 extends out of the support sleeve 2 and is provided with a frustum 34. The diameter of the lower end of the frustum 34 is the same as the diameter of the pull rod 3 and the diameter of the frustum 34 gradually increases from bottom to top. The support sleeve 2 is axially provided with a slot 26. The slot 26 communicates with the through slot 4 and radially penetrates through the support sleeve 2.
[0028] The placement base 1 includes a first base body 11 and a second base body 12 provided on the upper part of the first base body 11. The first base body 11 includes a bottom plate 111, an intermediate plate 112, and a plurality of support rods 113. The bottom plate 111 is horizontally arranged, the intermediate plate 112 is horizontally arranged above the bottom plate 111 and is coaxial with the bottom plate 111, and the outer diameter of the intermediate plate 112 is smaller than the outer diameter of the bottom plate 111. A first groove 114 is recessed downward on the upper end surface of the intermediate plate 112, and the first groove 114 is coaxial with the intermediate plate 112. The intermediate plate 112 is connected to the bottom plate 111 through a plurality of the support rods 113. The plurality of support rods 113 are evenly spaced in a circumferential shape with the axis of the intermediate plate 112 as the center. The upper end of each support rod 113 is fixedly connected to the intermediate plate 112, and the lower end of each support rod 113 is fixedly connected to the bottom plate 111. Each support rod 113 is inclined from the center outwards from top to bottom, that is, the bottom plate 111, the intermediate plate 112, and the plurality of support rods 113 together enclose a frustum 34 shape. The second base body 12 is coaxially arranged with the first base body 11 and the outer diameter of the second base body 12 is smaller than the outer diameter of the intermediate plate 112. A first flange 13 extends axially downward from the lower end of the second base body 12, and a first fixing bolt 14 is provided between the first flange 13 and the intermediate plate 112. The first fixing bolt 14 is used to fix the first flange 13 and the intermediate plate 112 to each other. A first limiting block 15 extends downward from the lower end surface of the second base body 12. The first limiting block 15 is coaxial with the second base body 12, and the outer diameter of the first limiting block 15 matches the inner diameter of the first groove 114 so as to be able to engage with the first groove 114. A second groove 121 is formed in the upper end of the second base body 12, and the second groove 121 is coaxial with the second base body 12.
[0029] The support sleeve 2 is coaxially arranged with the placement base 1 and is located at the upper end of the second seat body 12. The support sleeve 2 includes a first segment 21 and a second segment 22 arranged at the upper end of the first segment 21. The first segment 21 is used for connecting with the placement base 1. The first segment 21 is in the shape of a frustum 34, and the outer diameter of the first segment 21 gradually decreases from bottom to top, so that the center of gravity of the first segment 21 is lower and the placement is more stable. A second convex edge 23 is formed by circumferentially protruding from the lower end of the first segment 21. A second fixing bolt 24 is provided between the second convex edge 23 and the second seat body 12. The second fixing bolt 24 is used to fix the second convex edge 23 and the second seat body 12 to each other. The second segment 22 is in the shape of a cylinder 52 and has an outer diameter smaller than that of the first segment 21, and a step surface 25 is formed between the second segment 22 and the first segment 21. The first segment 21 and the second segment 22 are jointly provided with a slot 26. The slot 26 communicates with the through slot 4 and the slot 26 penetrates through the first segment 21 and the second segment 22 along the radial direction of the first segment 21 and the second segment 22. At the same time, the slot 26 penetrates upward through the upper end surface of the second segment 22. The support sleeve 2 further includes a third segment 27 arranged at the lower end of the first segment 21. The third segment 27 is coaxial with the first segment 21, and the outer diameter of the third segment 27 matches the inner diameter of the second groove 121 so as to be capable of being clamped therein.
[0030] The slot 4 is formed in the support sleeve 2 and the placement seat 1 and penetrates the support sleeve 2 and the placement seat 1 in the vertical direction. The pull rod 3 is vertically arranged in the slot 4, and the pull rod 3 can slide vertically in the slot 4. The pull rod 3 includes a top rod 31, an intermediate rod 32, and a bottom rod 33. The top rod 31 is located at the position corresponding to the support sleeve 2 in the slot 4, and the upper end of the top rod 31 extends out of the support sleeve 2 and is provided with a frustum 34. The diameter of the lower end of the frustum 34 is the same as the diameter of the top rod 31, and the diameter of the frustum 34 gradually increases from bottom to top. The intermediate rod 32 is located at the lower end of the top rod 31 and is connected to the top rod 31 by a third fixing bolt 35. The upper end of the intermediate rod 32 extends into the first segment 21, so that the connection between the top rod 31 and the intermediate rod 32 is located inside the first segment 21 rather than at the connection between the first segment 21 and the second seat body 12. Such staggered arrangement makes the fixation of the top rod 31 and the intermediate rod 32 more stable and not easily bent by lateral forces. The bottom rod 33 is located at the lower end of the intermediate rod 32 and is connected to the intermediate rod 32 by a fourth fixing bolt 36. The upper end of the bottom rod 33 extends into the second seat body 12, so that the connection between the intermediate rod 32 and the bottom rod 33 is located inside the second seat body 12, and the second seat body 12 plays a role in protecting and stabilizing the connection between the intermediate rod 32 and the bottom rod 33. The lower end of the bottom rod 33 is connected to an external power device (not shown in the figure), and the external power device drives the pull rod 3 to move vertically in the slot 4.
[0031] Please refer to Figure 2 , a boss 37 is provided at the upper end of the frustum 34. The horizontal cross-section of the boss 37 is a regular polygon, and the outer diameter of the boss 37 is smaller than the outer diameter of the second segment 22. In the illustrated embodiment, the horizontal cross-section of the boss 37 is a regular hexagon. In other embodiments, the number of sides of the boss 37 can also be other, as long as it can play a role in circumferentially limiting the pressing member 5 described below. Please refer to Figure 4 and Figure 5 , a pressing member 5 is provided on the boss 37. The pressing member 5 is detachably connected to the boss 37, and the pressing member 5 cooperates with the step surface 25 to axially limit the gear 6 to be processed. The pressing member 5 includes a pressing block 51 and a cylinder 52. The cylinder 52 is provided on the lower end surface of the pressing block 51, and the outer diameter of the cylinder 52 matches the inner diameter of the gear 6. A third groove 53 matching the boss 37 is formed in the middle of the cylinder 52 to be able to engage with the boss 37, and a fixing member 54 is provided between the cylinder 52 and the boss 37. Please refer to Figure 6, the fixing member 54 has two sets symmetrically arranged. Each set of the fixing member 54 includes a second limiting block 541, a clamping block 542 and an elastic member 543. The inner wall of the third groove 53 is recessed horizontally to form a fourth groove 544. At the position where the fourth groove 544 penetrates the inner wall of the third groove 53, a third convex edge 545 is recessed from the outer periphery inward. The outer diameter of the second limiting block 541 matches the inner diameter of the fourth groove 544 and is slidably arranged in the fourth groove 544. The elastic member 543 is arranged between the second limiting block 541 and the bottom wall of the fourth groove 544. In the illustrated embodiment, the elastic member 543 is a helical spring. In other embodiments, the elastic member 543 can also be an elastic element such as a spring piece, as long as it can drive the second limiting block 541 to reset elastically. The clamping block 542 is arranged at one end of the second limiting block 541 away from the elastic member 543. The outer diameter of the clamping block 542 is smaller than the outer diameter of the second limiting block 541 and extends out of the fourth groove 544. A clamping groove 546 for the clamping block 542 to be inserted into is formed on the convex platform 37. In this embodiment, a vertical groove 61 is recessed from one end face of the gear 6 towards the other end face. A positioning block 55 protrudes from the pressing block 51 corresponding to the position of the vertical groove 61. The positioning block 55 and the vertical groove 61 can be clamped and matched.
[0032] One working mode of an embodiment of a fixing tool for a gear 6 of the present utility model is as follows: When it is necessary to fix the gear 6, first sleuth the gear 6 to be processed on the second segment 22 and make the lower end surface of the gear 6 abut against the step surface 25. Mount the pressing member 5 on the boss 37 to perform circumferential positioning on the gear 6. The method is as follows: Align the positioning block 55 with the vertical groove 61 on the gear 6, and insert the positioning block 55 while maintaining this position. At this time, the cylinder 52 is also sleeved on the outer periphery of the boss 37. Since the boss 37 is a regular polygon, the cylinder 52 cannot rotate relative to the boss 37. During the downward movement of the cylinder 52, the clamping block 542 is pushed by the outer peripheral wall of the circumference into the fourth groove 544 to be retracted into the fourth groove 544. At this time, the elastic member 543 is in a compressed state. When the clamping block 542 is aligned with the clamping groove 546, the clamping block 542 and the second limiting block 541 pop out under the resilience of the elastic member 543 and are snapped into the clamping groove 546. Then start the external power device to pull down the pull rod 3. The frustum 34 moves downward with the downward movement of the pull rod 3 and enters the through groove 4. The outer diameter of the upper end of the frustum 34 is larger, so it can expand the upper end of the second segment 22 (that is, due to the arrangement of the slotted opening 26, the second segment 22 deforms under the extrusion of the frustum 34) and tightly hold the gear 6 from the inside to the outside, playing a role in fixing the gear 6. After fixing, the gear 6 can be subjected to milling edge processing. After the processing is completed, operate in reverse according to the above steps to take out the gear 6.
[0033] It is worth emphasizing that the support sleeve 2, the placement seat 1, and the pull rod 3 are all composed of several detachable parts from each other, so it is convenient to disassemble the fixing tool with a relatively large volume into multiple smaller components, which is convenient for workers to maintain, store, and move the fixing tool.
Claims
1. A gear fixing tooling, characterized in that: It includes a placement seat, a pull rod, and a support sleeve. The support sleeve is detachably arranged on the placement seat. The placement seat and the support sleeve are jointly provided with a through groove. The outer diameter of the pull rod matches the inner diameter of the through groove and the pull rod slides through the through groove along the length direction of the through groove. The lower end of the pull rod extends out of the placement seat and is connected to an external power device. The upper end of the pull rod extends out of the support sleeve and is provided with a frustum. The diameter of the lower end of the frustum is the same as the diameter of the pull rod and the diameter of the frustum gradually increases from bottom to top. The support sleeve is provided with a slot along its own axis. The slot is communicated with the through groove and penetrates the support sleeve in the radial direction.
2. The gear fixing tooling according to claim 1, characterized in that: The support sleeve and the placement seat are coaxially arranged. The support sleeve includes a first segment and a second segment arranged at the upper end of the first segment. The second segment is cylindrical and its outer diameter is smaller than that of the first segment and a step surface is formed between the second segment and the first segment.
3. The gear fixing tooling according to claim 2, characterized in that: The diameter of the first segment gradually increases from top to bottom.
4. The gear fixing tooling according to claim 2, wherein: The placement seat includes a first seat body and a second seat body arranged at the upper part of the first seat body. The lower end of the second seat body is detachably connected to the first seat body, and the upper end of the second seat body is detachably connected to the support sleeve.
5. The gear fixing tooling according to claim 4, characterized in that: The first seat body includes a bottom plate, an intermediate plate, and several support rods. The bottom plate and the intermediate plate are both horizontally arranged and coaxial. The upper end of the intermediate plate is provided with a first groove. Several support rods are all arranged between the bottom plate and the intermediate plate and each support rod inclines from the center outwards from top to bottom. A first convex edge protrudes axially from the lower end of the second seat body. A first fixing bolt is arranged between the first convex edge and the intermediate plate. The lower end of the second seat body has a first limiting block that is snap-fitted with the first groove.
6. The gear fixing tooling according to claim 5, characterized in that: The upper end of the second seat body is provided with a second groove. A second convex edge protrudes circumferentially from the lower end of the first segment. A second fixing bolt is arranged between the second convex edge and the second seat body. The support sleeve further includes a third segment arranged at the lower end of the first segment. The third segment matches the inner diameter of the second groove so as to be able to be clamped therein.
7. The gear fixing tooling according to claim 2, characterized in that: A convex platform is arranged at the upper end of the frustum. The outer diameter of the convex platform is smaller than the outer diameter of the second segment. A pressing member is arranged on the convex platform. The pressing member is detachably connected to the convex platform. The pressing member cooperates with the step surface to axially limit the gear to be processed.
8. A gear fixing tooling according to claim 7, characterized in that: The horizontal cross-section of the convex platform is a regular polygon. The pressing member includes a pressing block and a cylinder. The cylinder is arranged on the lower end surface of the pressing block and the outer diameter of the cylinder matches the inner diameter of the gear. A third groove matching the convex platform is opened in the middle of the cylinder so as to be able to be engaged with the convex platform. A fixing member is arranged between the cylinder and the convex platform.
9. A gear fixing tooling according to claim 8, characterized in that: The fixing member includes a second limiting block, a clamping block, and an elastic member. A fourth groove is recessed in the inner wall of the third groove in the horizontal direction. The second limiting block slides in the fourth groove. The elastic member is arranged between the second limiting block and the bottom wall of the fourth groove. The clamping block is arranged at one end of the second limiting block away from the elastic member and extends out of the fourth groove. A clamping slot for the clamping block to be inserted into is opened on the convex platform.
10. A gear fixing tooling as described in claim 9, characterized in that: The elastic member is a helical spring.