A chamfering device for die casting mould fittings

Abstract

The application relates to the technical field of part machining, in particular to a chamfering device for a die casting mold accessory, which comprises a device body, a base for placing a workpiece is arranged on the device body, a limiting mechanism for clamping the workpiece and a polishing mechanism for chamfering the workpiece are arranged on the base, the limiting mechanism comprises a shaft head limiting component and a shaft tail limiting component which abut against the workpiece, the shaft head limiting component comprises a first limiting piece which abuts against the top end of the shaft head of the workpiece, a second limiting piece which abuts against the bottom end of the shaft head of the workpiece and a third limiting piece which abuts against the side wall of the shaft head of the workpiece, the first limiting piece and the second limiting piece are rotationally arranged on the base, and the third limiting piece is slidingly arranged on the base along the radial direction of the workpiece. The application ensures the stability of the position of the workpiece by arranging the limiting mechanism, the limiting mechanism cooperates with the polishing mechanism to realize accurate chamfering of the workpiece, and the quality and efficiency of the chamfering of the workpiece are improved.

Description

Technical Field

[0001] This application relates to the technical field of parts processing, and in particular to a chamfering processing apparatus for die-casting mold parts. Background Technology

[0002] Chamfering equipment is a key piece of equipment in precision mold manufacturing. Its core function is to chamfer the edges and openings of workpieces as needed, remove the sharp edges of the workpieces, facilitate assembly, reduce stress concentration, and improve the life and safety of parts. The chamfering equipment fixes the workpiece with a fixture and drives the grinding wheel to complete the chamfering at a certain speed.

[0003] Die casting mold components are the core functional parts of die casting molds (such as cores, sliders, ejector pins, etc.). They are used to form metal castings under high temperature and high pressure. Die casting mold components vary greatly in length and have diverse chamfering positions. Existing chamfering processing equipment uses a fixed processing head for processing, which is only suitable for standardized workpieces with fixed length and diameter. It cannot adjust the clamping position according to the length of the workpiece and the processing position to effectively limit the workpiece. This causes the workpiece to wobble easily during grinding, affecting the quality of the workpiece.

[0004] Therefore, a chamfering processing device for die-casting mold parts is needed to solve the problem that existing processing devices cannot flexibly adjust the clamping position for workpieces with different processing requirements. Summary of the Invention

[0005] In order to flexibly adjust the clamping position and effectively limit the movement of parts with different processing requirements, this application provides a chamfering processing device for die casting mold accessories.

[0006] This application provides a chamfering processing device for die-casting mold parts, which adopts the following technical solution:

[0007] A chamfering processing device for die-casting mold parts includes a device body, a base for placing a workpiece mounted on the device body, and a limiting mechanism for clamping the workpiece and a grinding mechanism for chamfering the workpiece mounted on the base. The limiting mechanism includes a shaft head limiting assembly and a shaft tail limiting assembly that abut against the workpiece. The shaft head limiting assembly includes a first limiting member that abuts against the top end of the workpiece shaft head, a second limiting member that abuts against the bottom end of the workpiece shaft head, and a third limiting member that abuts against the side wall of the workpiece shaft head. The limiting member and the second limiting member are rotatably mounted on the base, and the third limiting member is slidably mounted on the base along the radial direction of the workpiece. The shaft tail limiting assembly includes a fourth limiting member that abuts against the side wall of the shaft tail of the workpiece and a fifth limiting member that abuts against the end face of the shaft tail of the workpiece. The fourth limiting member and the fifth limiting member are slidably mounted on the base along the axial direction of the workpiece. The fourth limiting member has a limiting groove for placing workpieces with different outer diameters. The grinding mechanism includes a grinding drive assembly and a moving drive assembly that drives the grinding drive assembly to approach or move away from the workpiece.

[0008] By adopting the above technical solution, the first and second limiting members, which are rotatably mounted on the base, can be adjusted according to the outer diameter of the workpiece, ensuring that the first and second limiting members stably maintain abutment against the workpiece shaft head from different directions, thereby limiting the workpiece shaft head. The third limiting member, which is slidably mounted on the base along the radial direction of the workpiece, can adapt to different workpiece sizes and further strengthens the limiting effect on the workpiece shaft head. The fourth and fifth limiting members limit the workpiece shaft tail from the side wall and end face. At the same time, the fourth and fifth limiting members slide along the axial direction of the workpiece, which can be used for workpieces of different lengths. The limiting groove design on the fourth limiting member can limit workpieces with different outer diameters. The moving drive component can drive the distance between the grinding drive component and the workpiece, further improving the applicability of the device. Compared with the prior art, the limiting mechanism ensures the stability of the workpiece position, the grinding mechanism realizes the chamfering of the workpiece, and the limiting mechanism and the grinding mechanism cooperate to realize the precise chamfering of the workpiece, improving the quality and efficiency of the workpiece chamfering.

[0009] Optionally, a rotating rod is rotatably mounted on the base, the first limiting member is mounted on the rotating rod and rotates around its own axis, and a counterweight is movably sleeved on the rotating rod to drive the first limiting member to keep in contact with the top of the workpiece.

[0010] By adopting the above technical solution, the first limiting member rotates around its own axis, making the contact between the first limiting member and the top of the workpiece shaft smoother, reducing the frictional loss between the workpiece and the first limiting member, and thus reducing the impact on the positioning accuracy of the workpiece. The counterweight is movably sleeved on the rotating rod, which can automatically adjust the contact state between the first limiting member and the top of the workpiece by gravity, thereby improving the stability of the first limiting member's positioning.

[0011] Optionally, the base is provided with a mounting seat that slides radially along the workpiece, the third limiting member is mounted on the mounting seat and rotates around its own axis, the mounting seat is provided with a first adjusting hole that extends radially along the workpiece, the base is provided with a first locking hole, and the first locking hole is internally threaded with a first locking member that locks and fixes the sliding mounting seat.

[0012] By adopting the above technical solution, the mounting base slides radially along the workpiece to adjust the position of the third limiting member, thereby meeting the clamping requirements of the shaft head sidewall of workpieces with different outer diameters. The third limiting member rotates around its own axis, reducing the friction between the third limiting member and the workpiece and avoiding workpiece surface wear from affecting the workpiece positioning. The third limiting member slides radially through the first adjustment hole. The first locking member passes through the first adjustment hole and is threadedly connected to the first locking hole, so that the mounting base can be firmly fixed on the base after sliding.

[0013] Optionally, a guide rod is fixedly installed on the base, and the fourth limiting member is slidably sleeved on the guide rod along the workpiece axis. A second locking hole is provided on the fourth limiting member, and a second locking member is threadedly connected to the second locking hole to lock and fix the fourth limiting member after sliding.

[0014] By adopting the above technical solution, the fourth limiting member can slide and adjust its position along the workpiece axis to adapt to workpieces of different lengths. After sliding, it is locked and fixed by the second locking member. The guide rod provides a guiding function for the sliding of the fourth limiting member and ensures the stability of the sliding path of the fourth limiting member.

[0015] Optionally, the fourth limiting member includes a first clamping part and a second clamping part forming a limiting groove. The second clamping part is slidably mounted on the first clamping part along the radial direction of the workpiece. The second clamping part is provided with a second adjusting hole extending radially along the workpiece. The first clamping part is provided with a third locking hole. The third locking hole is internally threaded with a third locking member for locking and fixing the sliding second clamping part.

[0016] By adopting the above technical solution, the first clamping part and the second clamping part cooperate to form a limiting groove for placing workpieces with different outer diameters. The second clamping part is slidably installed on the first clamping part along the radial direction of the workpiece. The size of the limiting groove can be adjusted according to the outer diameter of the workpiece, which further enhances the flexibility of the device. The third locking part and the third locking hole are threadedly connected to lock and fix the adjusted second clamping part, ensuring the stability of the workpiece position during the processing.

[0017] Optionally, a sliding seat is slidably sleeved on the guide rod along the workpiece axis, and the fifth limiting member is slidably mounted on the sliding seat along the workpiece axis. A fourth locking hole is provided on the sliding seat, and a fourth locking member is threadedly connected to the fourth locking hole to lock and fix the fifth limiting member after sliding.

[0018] By adopting the above technical solution, the sliding seat slides on the guide rod along the workpiece axis, and the fifth limiting member slides on the sliding seat along the workpiece axis, so that the fifth limiting member can flexibly adjust its position along the workpiece axis, thereby adapting to the tail end face limiting requirements of workpieces of different lengths. The fourth locking member is threadedly connected to the fourth locking hole, ensuring the stability of the position of the fifth limiting member after adjustment, improving the accuracy and stability of workpiece clamping, and further improving the quality and efficiency of chamfering.

[0019] Optionally, the moving drive assembly includes a moving base for mounting the grinding drive assembly, a transmission assembly for driving the moving base to move linearly, and a first drive member for driving the transmission assembly. The transmission assembly includes a coarse adjustment rack mounted at the bottom of the moving base and a coarse adjustment gear fixedly connected to the first drive member. The first drive member drives the coarse adjustment gear to mesh with the coarse adjustment rack so that the moving base slides along the workpiece axis on the base. A coarse adjustment scale for measuring the sliding distance of the moving base is fixedly mounted on the moving base.

[0020] By adopting the above technical solution, the first driving component drives the coarse adjustment gear to rotate, and the rotation of the coarse adjustment gear drives the coarse adjustment rack transmission to realize the rapid sliding of the moving seat. This allows the grinding drive component on the moving seat to move closer to or away from the workpiece, completing the feed action of chamfering. The meshing transmission between the coarse adjustment rack and the coarse adjustment gear makes the sliding of the moving seat more stable and reliable, achieving precise control of the moving distance of the grinding drive component. By observing the coarse adjustment scale, the sliding distance of the moving seat can be directly measured, ensuring the accuracy of the processing position.

[0021] Optionally, a fine-tuning rack is fixedly connected to the bottom of the movable seat, and a fine-tuning gear meshing with the fine-tuning rack and a second driving member driving the fine-tuning gear to rotate are installed on the base. The second driving member drives the fine-tuning gear to mesh with the fine-tuning rack so that the movable seat slides on the base along the workpiece axis. The base is provided with a fine-tuning scale to measure the sliding distance of the movable seat.

[0022] By adopting the above technical solution, the second driving component drives the fine-tuning gear to rotate, and the rotation of the fine-tuning gear drives the fine-tuning rack to achieve low-speed and smooth sliding of the moving seat. The meshing transmission between the fine-tuning rack and the fine-tuning gear enables the moving seat to make precise micro-adjustments along the workpiece axis, thereby improving the positioning accuracy of the grinding mechanism for chamfering the workpiece. The fine-tuning scale can intuitively display the low-speed sliding distance of the moving seat, making it easy for the operator to accurately control the moving distance.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The limiting mechanism ensures the stability of the workpiece position, and the grinding mechanism achieves chamfering of the workpiece. The combination of the limiting mechanism and the grinding mechanism enables precise chamfering of the workpiece, improving the quality and efficiency of workpiece chamfering.

[0025] 2. The first limiting component rotates around its own axis, making the contact between the first limiting component and the top of the workpiece shaft smoother, reducing frictional loss between the workpiece and the first limiting component, and thus reducing the impact on the positioning accuracy of the workpiece. The counterweight can automatically adjust the contact state between the first limiting component and the top of the workpiece using gravity, improving the stability of the first limiting component's positioning.

[0026] 3. The first driving component drives the coarse adjustment gear to rotate, which in turn drives the coarse adjustment rack to achieve rapid sliding of the moving seat. This allows the grinding drive component on the moving seat to move closer to or further away from the workpiece, completing the feed action for chamfering. The meshing transmission between the coarse adjustment rack and the coarse adjustment gear makes the sliding of the moving seat more stable and reliable, achieving precise control over the moving distance of the grinding drive component. By observing the coarse adjustment scale, the distance of rapid sliding of the moving seat can be directly measured, ensuring the accuracy of the processing position. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0028] Figure 2 This is a partial structural diagram of Embodiment 1 of this application. Figure 1 This is used to demonstrate the setting relationship of the shaft head limiting components;

[0029] Figure 3 This is a partial structural diagram of Embodiment 1 of this application. Figure 2 This is used to demonstrate the setting relationship of the tail limit component;

[0030] Figure 4 This is a partial exploded view of Embodiment 1 of this application, used to illustrate the arrangement relationship between the first clamping part and the second clamping part;

[0031] Figure 5 This is a partial structural diagram of Embodiment 2 of this application, used to illustrate the arrangement relationship between the grinding wheel and the workpiece.

[0032] Reference numerals: 1. Device body; 2. Base; 3. V-groove; 4. Limiting mechanism; 5. Shaft head limiting assembly; 6. First limiting member; 7. Second limiting member; 8. Third limiting member; 9. Shaft tail limiting assembly; 10. Fourth limiting member; 11. Fifth limiting member; 12. Limiting groove; 13. Grinding mechanism; 14. Grinding drive assembly; 15. Moving drive assembly; 16. Rotating rod; 17. Counterweight; 18. Rotating motor; 19. Mounting base; 20. First adjusting hole; 21. First threaded hole; 22. First bolt; 23. Guide rod; 24. Second threaded hole; 25. Second bolt; 26. First clamping part; 27. Second clamping part; 28. Second adjusting hole 29. Third threaded hole; 30. Third bolt; 31. Sliding seat; 32. Through hole; 33. Fourth threaded hole; 34. Fourth bolt; 35. Fifth threaded hole; 36. Fifth bolt; 37. Moving seat; 38. Transmission assembly; 39. Coarse adjustment rack; 40. Coarse adjustment gear; 41. First rotating shaft; 42. First handle; 43. Coarse adjustment scale; 44. Indicator rod; 45. Fine adjustment rack; 46. Second rotating shaft; 47. Fine adjustment gear; 48. Second handle; 49. Fine adjustment scale; 50. Guide rail; 51. Slide groove; 52. Grinding head; 53. First motor; 54. Grinding wheel; 55. Adjusting seat; 56. Second motor; 57. Ball screw pair; 58. Workpiece. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] Example 1:

[0035] A chamfering apparatus for die-casting mold parts, reference Figure 1 and Figure 2 The device includes a main body 1, on which a base 2 is fixedly mounted. A V-groove 3 is formed on the end face of the base 2, and a workpiece 58 is placed in the V-groove 3 to prevent rolling. A limiting mechanism 4 is mounted on the base 2, including a shaft head limiting assembly 5. The shaft head limiting assembly 5 is located at the shaft head of the workpiece 58 and includes a first limiting member 6, a second limiting member 7, and a third limiting member 8. The first limiting member 6 is rotatably mounted on the base 2 and abuts against the top of the shaft head of the workpiece 58. Two second limiting members 7 are provided and rotatably mounted on the base 2 around their own axis. The bottom end of the shaft head of the workpiece 58 abuts against the second limiting member 7. The third limiting member 8 is slidably mounted on the base 2 and abuts against the side wall of the shaft head of the workpiece 58. The third limiting member 8 slides radially along the workpiece 58, maintaining contact with the side walls of workpieces 58 with different outer diameters. The limiting mechanism 4 also includes a shaft tail limiting assembly 9, which, in combination with… Figure 3The shaft tail limiting component 9 is set at the shaft tail of the workpiece 58. The shaft tail limiting component 9 includes a fourth limiting member 10 and a fifth limiting member 11. The fourth limiting member 10 and the fifth limiting member 11 are mounted on the base 2 and can slide upward along the shaft of the workpiece 58 to accommodate workpieces 58 of different lengths. The fourth limiting member 10 abuts against the side wall of the shaft tail of the workpiece 58, and the fifth limiting member 11 abuts against the end face of the shaft tail of the workpiece 58. A limiting groove 12 is opened on the fourth limiting member 10. The workpiece 58 is located in the limiting groove 12. The groove opening of the limiting groove 12 is adjusted radially upward along the workpiece 58 to accommodate workpieces 58 of different diameters. A grinding mechanism 13 is also installed on the base 2. The grinding mechanism 13 includes a grinding drive component 14 and a moving drive component 15. The moving drive component 15 drives the grinding drive component 14 to move closer to or away from the workpiece 58 to meet the requirements of different chamfer positions.

[0036] refer to Figure 1 and Figure 2 A rotating rod 16 is rotatably mounted on the base 2. A first limiting member 6 is disposed on the rotating rod 16. The rotation of the rotating rod 16 causes the first limiting member 6 to move closer to or away from the workpiece 58. In this embodiment, the first limiting member 6 is a bearing, with the inner ring of the bearing fixedly mounted on the rotating rod 16 and the outer ring of the bearing in contact with the workpiece 58. During the chamfering process of the workpiece 58, the first limiting member 6 can rotate around its own axis as the workpiece 58 rotates. A counterweight 17 is sleeved on the rotating rod 16. In this embodiment, the counterweight 17 is a counterweight block made of iron, used to adjust the center of gravity of the rotating rod 16 and maintain the first limiting member 6. The first limiting member 6 abuts against the top of the workpiece 58. Two second limiting members 7 are arranged in the extension direction of the V-groove 3. The shaft head of the workpiece 58 is placed between the two second limiting members 7. With the first limiting member 6 abutting against the top of the shaft head of the workpiece 58, the bottom of the shaft head of the workpiece 58 abuts against the second limiting member 7. In this embodiment, the second limiting member 7 is a rotating wheel. A rotating motor 18 is installed on the base 2. The second limiting member 7 is coaxially fixed with the output shaft of the rotating motor 18. The rotating motor 18 drives the second limiting member 7 to rotate, so that the wear between the second limiting member 7 and the workpiece 58 is further reduced during the processing of the workpiece 58.

[0037] refer to Figure 1 and Figure 2A mounting base 19 is slidably mounted on the base 2 near the shaft end of the workpiece 58. A first adjustment hole 20 is provided at the bottom end of the mounting base 19. A first locking hole is provided on the base 2. A first locking element is threaded into the first locking hole. In this embodiment, the first adjustment hole 20 is an oblong hole that extends radially along the workpiece 58. The first locking hole is a first threaded hole 21. The first locking element is a first bolt 22. The first bolt 22 passes through the first adjustment hole 20 and is threadedly locked with the first threaded hole 21, thereby locking the sliding mounting base 19 onto the base 2. A third limiting element 8 is mounted on the mounting base 19. The mounting base 19 slides radially along the workpiece 58 on the base 2 to adjust the radial position of the third limiting element 8. In this embodiment, the third limiting element 8 is a bearing. The inner ring of the bearing is fixedly mounted on the mounting base 19, and the outer ring of the bearing is in contact with the workpiece 58. During the chamfering process of the workpiece 58, the third limiting element 8 can rotate around its own axis as the workpiece 58 rotates.

[0038] refer to Figure 1 and Figure 3 A guide rod 23 is fixedly installed at one end of the base 2. The guide rod 23 extends along the axial direction of the workpiece 58. The fourth limiting member 10 is sleeved on the guide rod 23 and slides along the axial direction of the guide rod 23. A second locking hole is opened on the end face of the fourth limiting member 10. A second locking member is threadedly connected to the second locking hole. In this embodiment, the second locking hole is a second threaded hole 24, and the second locking member is a second bolt 25. The second bolt 25 is threadedly locked with the second threaded hole 24 and abuts against the surface of the guide rod 23, thereby locking and fixing the fourth limiting member 10 on the guide rod 23.

[0039] refer to Figure 3 and Figure 4 The fourth limiting member 10 includes a first clamping part 26 and a second clamping part 27. The limiting groove 12 is formed by the first clamping part 26 and the second clamping part 27. The bottom end of the first clamping part 26 is provided with a third locking hole. The second clamping part 27 is L-shaped and the bottom end of the second clamping part 27 is provided with a second adjusting hole 28. The third locking hole is internally threaded with a third locking member. In this embodiment, the second adjusting hole 28 is an oblong hole and extends radially along the workpiece 58. The third locking hole is a third threaded hole 29 and the third locking member is a third bolt 30. The third bolt 30 passes through the second adjusting hole 28 and is threadedly locked with the third threaded hole 29, thereby locking and fixing the slidable second clamping part 27 with the first clamping part 26, and realizing the adjustment of the opening size of the limiting groove 12.

[0040] refer to Figure 3 and Figure 4A sliding seat 31 is slidably sleeved on the guide rod 23. A through hole 32 is provided on the sliding seat 31. The sliding seat 31 is sleeved on the fifth limiting member 11 through the through hole 32. A fourth locking hole is provided on the sliding seat 31. A fourth locking member is threadedly connected to the fourth locking hole. In this embodiment, the fourth locking hole is a fourth threaded hole 33, and the fourth locking member is a fourth bolt 34. The fourth bolt 34 is threadedly connected to the fourth threaded hole 33, thereby locking and fixing the fifth limiting member 11 on the sliding seat 31 and keeping the fifth limiting member 11 in contact with the tail end face of the workpiece 58 shaft. A fifth threaded hole 35 is also provided on the sliding seat 31. A fifth bolt 36 is threadedly connected to the fifth threaded hole 35. The fifth bolt 36 is threadedly connected to the fifth threaded hole 35, thereby locking and fixing the slidable sliding seat 31 on the guide rod 23.

[0041] refer to Figure 1 and Figure 2 The moving drive assembly 15 includes a moving base 37, a transmission assembly 38, and a first drive component. The grinding drive assembly 14 is mounted on the moving base 37. The transmission assembly 38 includes a coarse adjustment rack 39 and a coarse adjustment gear 40. The coarse adjustment rack 39 is fixedly mounted on the bottom end of the moving base 37. A first rotating shaft 41 is rotatably connected to the base 2. The coarse adjustment gear 40 is coaxially fixed with the first rotating shaft 41. The first drive component is fixedly mounted on one end of the first rotating shaft 41. In this embodiment, the first drive component is a first handle 42. 2. The rotation drives the first rotating shaft 41 to rotate, and the rotation of the first rotating shaft 41 drives the coarse adjustment gear 40. The coarse adjustment gear 40 meshes with the coarse adjustment rack 39, so that the moving seat 37 slides upward along the axis of the workpiece 58. The tooth gap between the coarse adjustment gear 40 and the coarse adjustment rack 39 is large, so the moving seat 37 can be quickly adjusted. One end of the moving seat 37 is equipped with a coarse adjustment scale 43, and an indicator rod 44 is fixedly installed on the base 2. By observing the corresponding position of the indicator rod 44 and the coarse adjustment scale 43, the displacement of the moving seat 37 can be accurately determined.

[0042] refer to Figure 1 and Figure 2 The bottom end of the movable seat 37 is also fixedly connected to a fine-tuning rack 45. A second rotating shaft 46 is rotatably mounted on the base 2. A fine-tuning gear 47 is coaxially fixedly mounted on the second rotating shaft 46. A second driving component is fixedly mounted on one end of the second rotating shaft 46. In this embodiment, the second driving component is a second handle 48. Rotating the second handle 48 drives the second rotating shaft 46 to rotate. The rotation of the second rotating shaft 46 drives the fine-tuning gear 47 to rotate. The fine-tuning gear 47 rotates and meshes with the fine-tuning rack 45, so that the movable seat 37 slides upward along the workpiece 58 axis. The tooth gap between the fine-tuning gear 47 and the fine-tuning rack 45 is small, and the sliding speed of the movable seat 37 is slow, so as to achieve fine adjustment of position. A fine-tuning scale 49 is provided on the second rotating shaft 46 to accurately control the sliding distance of the movable seat 37.

[0043] refer to Figure 1 and Figure 2 When the coarse adjustment gear 40 meshes with the coarse adjustment rack 39 and drives the moving seat 37 to slide rapidly, the fine adjustment rack 45 moves and drives the fine adjustment gear 47 to rotate. When the fine adjustment gear 47 meshes with the fine adjustment rack 45 and drives the moving seat 37 to slide slowly, the coarse adjustment rack 39 moves and drives the coarse adjustment gear 40 to rotate. This ensures that the two sets of gear and rack structures do not interfere with each other during transmission, thus guaranteeing the smoothness and reliability of the transmission. A guide rail 50 is fixedly installed on the base 2. The guide rail 50 extends along the axial direction of the workpiece 58. The bottom end of the moving seat 37 is provided with a sliding groove 51 that slides with the guide rail 50, making the sliding process of the moving seat 37 more stable.

[0044] refer to Figure 1 and Figure 2 The grinding drive assembly 14 includes a grinding drive component and a grinding component. The grinding drive component is fixedly mounted on the movable base 37. In this embodiment, the grinding component is a grinding head 52, and the grinding drive component is a first motor 53. The output shaft of the first motor 53 is coaxially fixed with the grinding head 52. The axis of the grinding head 52 coincides with the axis of the workpiece 58, thereby realizing the chamfering of the inner hole of the workpiece 58.

[0045] The implementation principle of Embodiment 1 of this application is as follows: For chamfering workpiece 58, firstly, workpiece 58 is placed in the V-groove 3. Based on the outer diameter and length of workpiece 58, the position of the third limiting member 8 is adjusted. The second limiting member 7 abuts against the top end of the workpiece 58 shaft, thereby causing the bottom end of the workpiece 58 shaft to abut against the second limiting member 7, thus limiting the workpiece 58 shaft. The fourth limiting member 10 and the fifth limiting member 11 are adjusted, moving the fourth limiting member 10 to the tail end of the workpiece 58 shaft. The distance between the first clamping part 26 and the second clamping part 27 is adjusted. The opening size of the limiting groove 12 is such that the first clamping part 26 and the second clamping part 27 abut against the side wall of the tail of the workpiece 58. The fifth limiting member 11 is adjusted to keep the fifth limiting member 11 abutting against the end face of the tail of the workpiece 58, thereby limiting the tail of the workpiece 58. According to the length of the workpiece 58, the position of the moving seat 37 is first quickly adjusted by the first handle 42, and then the position of the moving seat 37 is precisely adjusted by the second handle 48. After the grinding head 52 is moved to the appropriate position, the first motor 53 is driven to drive the grinding head 52 to perform chamfering on the inner hole of the workpiece 58.

[0046] Example 2:

[0047] A chamfering apparatus for die-casting mold parts, reference Figure 5The difference from Embodiment 1 is that the grinding part is a grinding wheel 54, which is detachably mounted on the output shaft of the first motor 53. The grinding wheel 54 is tangent to the periphery of the workpiece 58, so as to achieve chamfering of the outer edge of the workpiece 58. An adjustment seat 55 is also slidably mounted on the base 2. The moving drive assembly 15 is mounted on the adjustment seat 55. A second motor 56 and a ball screw pair 57 are mounted on the base 2. The second motor 56 and the ball screw pair 57 are coaxially fixed. The ball screw pair 57 extends radially along the workpiece 58. The second motor 56 and the ball screw pair 57 cooperate to drive the adjustment seat 55 to slide radially upward along the workpiece 58, so that the grinding wheel 54 moves to the periphery of the workpiece 58 and is tangent to the periphery of the workpiece 58, which facilitates chamfering of the outer side of the workpiece 58.

[0048] The implementation principle of Embodiment 2 of this application is as follows: After coarse and fine adjustment, the moving seat 37 drives the second motor 56, which drives the adjusting seat 55 to move radially along the workpiece 58. The grinding wheel 54 moves and is tangent to the periphery of the workpiece 58. Before chamfering, the grinding wheel 54 of the corresponding specification is replaced according to the chamfering requirements.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A chamfering processing device for die-casting mold parts, characterized in that: The device includes a main body (1), on which a base (2) for placing a workpiece (58) is mounted. The base (2) is equipped with a limiting mechanism (4) for clamping the workpiece (58) and a grinding mechanism (13) for chamfering the workpiece (58). The limiting mechanism (4) includes a shaft head limiting assembly (5) and a shaft tail limiting assembly (9) that abut against the workpiece (58). The shaft head limiting assembly (5) includes a first limiting member (6) that abuts against the top end of the shaft head of the workpiece (58), a second limiting member (7) that abuts against the bottom end of the shaft head of the workpiece (58), and a third limiting member (8) that abuts against the side wall of the shaft head of the workpiece (58). The first limiting member (6) and the second limiting member (7) rotate. The third limiting member (8) is mounted on the base (2) and is slidably mounted on the base (2) along the radial direction of the workpiece (58). The shaft tail limiting assembly (9) includes a fourth limiting member (10) that abuts against the side wall of the shaft tail of the workpiece (58) and a fifth limiting member (11) that abuts against the end face of the shaft tail of the workpiece (58). The fourth limiting member (10) and the fifth limiting member (11) are slidably mounted on the base (2) along the axial direction of the workpiece (58). The fourth limiting member (10) has a limiting groove (12) for placing workpieces (58) with different outer diameters. The grinding mechanism (13) includes a grinding drive assembly (14) and a moving drive assembly (15) that drives the grinding drive assembly (14) to approach or move away from the workpiece (58).

2. The chamfering device for die-casting mold parts according to claim 1, characterized in that: A rotating rod (16) is rotatably mounted on the base (2). The first limiting member (6) is mounted on the rotating rod (16) and rotates around its own axis. A counterweight (17) is movably sleeved on the rotating rod (16) to drive the first limiting member (6) to keep in contact with the top of the workpiece (58).

3. The chamfering device for die-casting mold parts according to claim 1, characterized in that: The base (2) is provided with a mounting seat (19) that slides radially along the workpiece (58). The third limiting member (8) is mounted on the mounting seat (19) and rotates around its own axis. The mounting seat (19) is provided with a first adjusting hole (20) that extends radially along the workpiece (58). The base (2) is provided with a first locking hole. The first locking hole is internally threaded with a first locking member that locks and fixes the sliding mounting seat (19).

4. The chamfering device for die-casting mold parts according to claim 1, characterized in that: A guide rod (23) is fixedly installed on the base (2). The fourth limiting member (10) is slidably sleeved on the guide rod (23) along the axial direction of the workpiece (58). A second locking hole is provided on the fourth limiting member (10). A second locking member is threadedly connected in the second locking hole to lock and fix the fourth limiting member (10) after sliding.

5. A chamfering device for die-casting mold parts according to claim 1, characterized in that: The fourth limiting member (10) includes a first clamping part (26) and a second clamping part (27) forming a limiting groove (12). The second clamping part (27) is slidably mounted on the first clamping part (26) along the radial direction of the workpiece (58). The second clamping part (27) is provided with a second adjusting hole (28) extending radially along the workpiece (58). The first clamping part (26) is provided with a third locking hole. The third locking hole is internally threaded with a third locking member for locking and fixing the second clamping part (27) after sliding.

6. A chamfering device for die-casting mold parts according to claim 4, characterized in that: The guide rod (23) is slidably fitted with a sliding seat (31) along the axial direction of the workpiece (58). The fifth limiting member (11) is slidably installed on the sliding seat (31) along the axial direction of the workpiece (58). The sliding seat (31) is provided with a fourth locking hole. The fourth locking hole is internally threaded with a fourth locking member for locking and fixing the fifth limiting member (11) after sliding.

7. A chamfering device for die-casting mold parts according to claim 1, characterized in that: The moving drive assembly (15) includes a moving seat (37) on which the grinding drive assembly (14) is mounted, a transmission assembly (38) that drives the moving seat (37) to move linearly, and a first drive member that drives the transmission assembly (38) to drive the transmission assembly (38). The transmission assembly (38) includes a coarse adjustment rack (39) mounted at the bottom of the moving seat (37) and a coarse adjustment gear (40) fixedly connected to the first drive member. The first drive member drives the coarse adjustment gear (40) to mesh with the coarse adjustment rack (39) so that the moving seat (37) slides on the base (2) along the axial direction of the workpiece (58). A coarse adjustment scale (43) for measuring the sliding distance of the moving seat (37) is fixedly mounted on the moving seat (37).

8. A chamfering device for die-casting mold parts according to claim 7, characterized in that: The bottom end of the movable seat (37) is also fixedly connected to a fine-tuning rack (45). The base (2) is equipped with a fine-tuning gear (47) that meshes with the fine-tuning rack (45) and a second driving member that drives the fine-tuning gear (47) to rotate. The second driving member drives the fine-tuning gear (47) to mesh with the fine-tuning rack (45) so that the movable seat (37) slides on the base (2) along the axial direction of the workpiece (58). The base (2) is provided with a fine-tuning scale (49) for measuring the sliding distance of the movable seat (37).

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