Special broaching machine clamp for machining key groove
By designing a special fixture for broaching machines to process keyways, and utilizing the cooperation of locking screws and eccentric wheels with indexing grooves, the problem of rapid indexing and positioning of keyways in workpieces on broaching machines was solved, thus improving work efficiency and reducing the difficulty of operation for workers.
Patent Information
- Application Number
- CN202422638536.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When machining the inner keyway of a sleeve-shaped workpiece on a broaching machine, the existing technology is difficult to quickly and accurately index and position, resulting in low work efficiency.
A special fixture for broaching machines for machining keyways was designed, which included a base, a locking sleeve, a support shaft, a locking screw, a dividing ring and an eccentric wheel. The workpiece was fixed by the locking screw, and the eccentric wheel cooperated with the dividing groove to achieve fast and accurate positioning, thereby completing the machining of multiple keyways.
It realizes fast and accurate positioning of the workpiece, improves processing efficiency, reduces the technical requirements of workers and maintains the simplicity of the fixture structure and low cost.
Smart Images
Figure CN223441702U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to frock fixture technical field, specifically is the special fixture of broaching machine of keyway processing. BACKGROUND
[0002] In the process of processing multiple internal keyways of the sleeve-shaped workpiece to be processed on the broaching machine, the workpiece needs to be quickly indexed to ensure work efficiency, but when the staff finds the center fixing position on the machine tool by the alignment method, it is time-consuming and laborious, and often cannot accurately index and position, therefore, a special fixture is needed to help the worker find the index position on the machine tool to perform other processes. SUMMARY
[0003] The utility model discloses a broaching machine special fixture for processing keyway can quickly index and fix the workpiece position on the machine tool, and then complete the keyway processing, improve work efficiency.
[0004] To achieve the above-mentioned purpose, the following technical solutions are adopted:
[0005] The broaching machine special fixture for processing keyway includes a base, the top of the base is provided with a locking sleeve, a supporting shaft is arranged on the inner side of the locking sleeve, a tool groove is arranged on the outer wall of the supporting shaft along the axial direction of the supporting shaft, a plurality of locking screws are uniformly arranged on the locking sleeve along the circumferential direction of the locking sleeve, the locking screws are used to lock the workpiece to be processed in the locking sleeve, the workpiece to be processed is sleeved on the supporting shaft, the bottom end of the supporting shaft is fixed on the base, the locking sleeve is rotationally connected with the supporting shaft and / or the base, a dividing ring is sleeved on the locking sleeve, the dividing ring is fixed on the bottom of the outer wall of the locking sleeve, an eccentric wheel is arranged on one side of the dividing ring, the eccentric wheel is rotationally connected with the base, the axial line of the eccentric wheel is horizontally arranged, a plurality of dividing grooves are uniformly arranged on the outer wall of the dividing ring along the circumferential direction of the dividing ring, and the position of the locking sleeve can be locked by clamping the eccentric wheel into one of the dividing grooves.
[0006] Preferably, the axial line of the locking sleeve coincides with the axial line of the supporting shaft.
[0007] Preferably, a through groove corresponding to the tool groove is arranged on the base.
[0008] Preferably, the number of the locking screws is two.
[0009] Preferably, a shaft sleeve is sleeved on the workpiece to be processed, and the locking screw abuts against the outer wall of the shaft sleeve.
[0010] Preferably, a U-shaped support corresponding to the eccentric wheel is arranged on the top of the base.
[0011] Preferably, the eccentric wheel is provided with a handle.
[0012] Preferably, the number of the index slots is twelve.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The utility model discloses a support shaft is used for loading workpiece to be processed, and the workpiece to be processed can rotate on the support shaft, and the workpiece to be processed is locked in the locking sleeve through the locking screw, the position of the index ring is locked after the eccentric wheel is clamped in one index slot, the cutter is in and out from the cutter groove, and the inner key groove is processed, after one inner key groove is processed on the workpiece to be processed, the eccentric wheel is rotated, the eccentric wheel deviates from the index slot, the locking sleeve is rotated to the next processing position, then the eccentric wheel is clamped in the corresponding index slot, and the locking sleeve is fixed, and the next inner key groove can be processed, the workpiece position can be fixed accurately through quick indexing, and then the key groove processing is completed, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is the structural schematic diagram of the utility model, and
[0016] Fig. 2 It is the use state reference drawing of the utility model.
[0017] Reference numerals in the drawings: 1, base; 11, through slot; 12, U-shaped support; 2, locking sleeve; 3, support shaft; 4, cutter groove; 5, locking screw; 6, workpiece to be processed; 61, shaft sleeve; 7, index ring; 8, eccentric wheel; 81, handle; 9, index slot. DETAILED DESCRIPTION
[0018] The utility model will be further described below in combination with specific embodiments. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the application.
[0019] Embodiment: as shown in the accompanying drawings, Figs. 1-2 The utility model discloses a special fixture of broaching machine for processing key groove, including base 1, be equipped with a plurality of screw mounting holes on base 1, through the screw, base 1 is fixed on the workbench of broaching machine, base 1 is used for carrying the weight of whole fixture body, is connected with broaching machine, ensures that there is no slip, vibration when processing.
[0020] The top of the base 1 is provided with a locking sleeve 2, a supporting shaft 3 is arranged on the inner side of the locking sleeve 2, a cutter groove 4 is arranged on the outer wall of the supporting shaft 3 along the axial direction of the supporting shaft 3, and a through groove 11 corresponding to the cutter groove 4 is arranged on the base 1, and the cutter groove 4 and the through groove 11 are used for the cutter to enter and exit.
[0021] A plurality of locking screws 5 are uniformly arranged on the locking sleeve 2 along the circumferential direction of the locking sleeve 2, and screw holes corresponding to the locking screws 5 are arranged on the outer wall of the locking sleeve 2, the locking screws 5 are used for locking a workpiece 6 to be machined in the locking sleeve 2, the workpiece 6 to be machined is sleeved on the supporting shaft 3, the outer diameter of the supporting shaft 3 is adapted to the inner diameter of the workpiece 6 to be machined, and the workpiece 6 to be machined can rotate on the supporting shaft 3.
[0022] Preferably, the number of the locking screws 5 is two, and the two locking screws 5 are symmetrically arranged on the locking sleeve 2.
[0023] The bottom end of the supporting shaft 3 is fixed on the base 1, the bottom end of the supporting shaft 3 can be embedded in the base 1, the locking sleeve 2 is rotationally connected with the supporting shaft 3 and / or the base 1, and the locking sleeve 2 can be rotationally connected with the supporting shaft 3 through a bearing.
[0024] Preferably, the axis of the locking sleeve 2 coincides with the axis of the supporting shaft 3.
[0025] The distance between the inner wall of the locking sleeve 2 and the outer wall of the supporting shaft 3 is greater than the wall thickness of the workpiece 6 to be machined.
[0026] The locking sleeve 2 is sleeved with a graduated ring 7, the graduated ring 7 is fixed on the bottom of the outer wall of the locking sleeve 2, and the graduated ring 7 and the locking sleeve 2 can adopt an integrated structure.
[0027] One side of the graduated ring 7 is provided with an eccentric wheel 8, the eccentric wheel 8 is rotationally connected with the base 1, the axis of the eccentric wheel 8 is horizontally arranged, a plurality of graduated grooves 9 are uniformly arranged on the outer wall of the graduated ring 7 along the circumferential direction of the graduated ring 7, and the position of the locking sleeve 2 can be locked by clamping the eccentric wheel 8 into one of the graduated grooves 9.
[0028] Preferably, in order to avoid squeezing the workpiece to be machined, a shaft sleeve 61 is sleeved on the workpiece 6 to be machined, the locking screw 5 abuts against the outer wall of the shaft sleeve 61, the shaft sleeve 61 uniformly transmits the clamping force, and the clamping of the workpiece 6 to be machined is realized.
[0029] Preferably, in order to facilitate the installation of the eccentric wheel, a U-shaped support 12 corresponding to the eccentric wheel 8 is welded on the top of the base 1.
[0030] Preferably, in order to facilitate the rotation of the eccentric wheel, a handle 81 is welded on the outer circumferential wall of the eccentric wheel 8.
[0031] Preferably, the number of the index slots 9 is twelve, and each rotation of an index slot 9 is a rotation of 30°.
[0032] The utility model discloses when using, the workpiece 6 of waiting to be processed along with the support axle 3 of waiting to be processed workpiece 6 inner hole size same of having the shaft sleeve 61 is placed on the base 1, realizes the positioning of workpiece 6 of waiting to be processed, then utilizes locking screw 5 clamping shaft sleeve 61 again, and the shaft sleeve 61 evenly transmits clamping force, realizes the clamping of workpiece, guarantees workpiece positioning accurate, and clamping is reliable, and the workpiece 6 of waiting to be processed is placed and is completed, to satisfy the index requirement, first operation eccentric wheel 8 and index slot 9 cooperation, limit the rotation of index ring 7, then process a keyway that needs to be processed on the workpiece 6 of waiting to be processed, then operate eccentric wheel 8 and lift, rotate index ring 7 to the angle of next keyway requirement, operate eccentric wheel 8 and index slot 9 cooperation, fixed index position, according to the similar operation repeatedly of processing requirement, it is favorable to fast index positioning processing, has improved the positioning speed, reduced the technical requirement of worker, with simple structure reliable, the advantage such as low in cost.
[0033] The utility model discloses effectively solved the inconvenient index positioning problem that meets in the process of multiple keyway processing, realizes quick positioning, can improve positioning accuracy, reduced the technical requirement of worker, with simple structure reliable, the advantage such as low in cost.
Claims
1. A special fixture for a broaching machine for machining keyways, comprising a base (1), characterized in that: A locking sleeve (2) is provided on the top of the base (1), a support shaft (3) is provided on the inner side of the locking sleeve (2), a knife groove (4) is provided on the outer wall of the support shaft (3) along the axial direction of the support shaft (3), a plurality of locking screws (5) are evenly provided on the locking sleeve (2) along the circumference of the locking sleeve (2), and the locking screws (5) are used to lock the workpiece (6) to be processed in the locking sleeve (2), the workpiece (6) to be processed is sleeved on the support shaft (3), the bottom end of the support shaft (3) is fixed on the base (1), and the locking sleeve (2) and the support shaft are fixed to each other. (3) and / or the base (1) are rotatably connected, a dividing ring (7) is sleeved on the locking sleeve (2), the dividing ring (7) is fixed to the bottom of the outer wall of the locking sleeve (2), an eccentric wheel (8) is provided on one side of the dividing ring (7), the eccentric wheel (8) is rotatably connected to the base (1), the axis of the eccentric wheel (8) is arranged horizontally, a plurality of dividing grooves (9) are evenly arranged on the outer wall of the dividing ring (7) along the circumference of the dividing ring (7), and the position of the locking sleeve (2) can be locked by the eccentric wheel (8) being stuck in one of the dividing grooves (9).
2. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: The axis center line of the locking sleeve (2) coincides with the axis center line of the support shaft (3).
3. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: The base (1) is provided with a through groove (11) corresponding to the knife groove (4).
4. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: The number of the locking screws (5) is two.
5. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: The workpiece (6) to be processed is sleeved with a shaft sleeve (61), and the locking screw (5) abuts against the outer wall of the shaft sleeve (61).
6. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: A U-shaped bracket (12) adapted to the eccentric wheel (8) is provided on the top of the base (1).
7. The special fixture for broaching machines for machining keyways according to claim 1, characterized in that: The eccentric wheel (8) is provided with a handle (81).
8. The special fixture for broaching machines for machining key slots according to claim 1, characterized in that: The number of the indexing grooves (9) is twelve.