Chamfering machining device for die-casting die accessories

Abstract

The invention relates to the technical field of part machining, in particular to a chamfering device for die-casting die accessories, which comprises a device body, a base for placing a workpiece is mounted on the device body, and a limiting mechanism for clamping the workpiece and a polishing mechanism for chamfering the workpiece are mounted on the base. The limiting mechanism comprises a shaft head limiting assembly and a shaft tail limiting assembly which abut against the workpiece, and the shaft head limiting assembly comprises a first limiting piece abutting against the top end of the shaft head of the workpiece, a second limiting piece abutting against the bottom end of the shaft head of the workpiece and a third limiting piece abutting against the side wall of the shaft head of the workpiece. The first limiting piece and the second limiting piece are rotationally installed on the base, and the third limiting piece is installed on the base in a sliding mode in the radial direction of the workpiece. By arranging the limiting mechanism, the stability of the position of the workpiece is ensured, the limiting mechanism is matched with the grinding mechanism, precise chamfering machining of the workpiece is achieved, and the quality and efficiency of workpiece chamfering machining are improved.

Description

Technical Field

[0001] The present application relates to the technical field of parts processing, and in particular to a chamfering processing device for die-casting mold accessories. Background Art

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

[0003] Die-casting mold accessories are the core functional components of the die-casting mold (such as cores, sliders, ejectors, etc.), which are used to form metal castings under high temperature and high pressure environments. The lengths of die-casting mold accessories vary greatly, and the chamfering positions are diverse. The existing chamfering processing device uses a fixed processing head for processing, which is only suitable for standardized workpieces with fixed length and diameter. The clamping position cannot be adjusted according to the length of the workpiece and the processing position, and the workpiece cannot be effectively limited. As a result, the workpiece is prone to shaking during the grinding process, affecting the quality of the workpiece.

[0004] Therefore, a chamfering processing device for die-casting mold accessories is needed to solve the problem that the existing processing device 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 parts with different processing requirements, the present application provides a chamfering processing device for die-casting mold accessories.

[0006] The present application provides a chamfering device for die-casting mold accessories, which adopts the following technical solution: A chamfering device for die-casting mold accessories, comprising a device body, a base for placing a workpiece is installed on the device body, a limiting mechanism for clamping the workpiece and a grinding mechanism for chamfering the workpiece are installed on the base, the limiting mechanism comprises a shaft head limiting assembly and a shaft tail limiting assembly that conflict with the workpiece, the shaft head limiting assembly comprises a first limiting piece that conflicts with the top end of the workpiece shaft head, a second limiting piece that conflicts with the bottom end of the workpiece shaft head, and a third limiting piece that conflicts with the side wall of the workpiece shaft head, wherein the first limiting piece The limit member and the second limit member are rotatably mounted on the base, the third limit member is slidably mounted on the base along the radial direction of the workpiece, the shaft tail limit assembly includes a fourth limit member that interferes with the side wall of the workpiece shaft tail, and a fifth limit member that interferes with the end face of the workpiece shaft tail, the fourth limit member and the fifth limit member are slidably mounted on the base along the axial direction of the workpiece, the fourth limit member is formed with a limit groove for placing workpieces of different outer diameters, and 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.

[0007] By adopting the above technical solutions, the first limiting member and the second limiting member rotatably mounted on the base can be adjusted according to the outer diameter of the workpiece, ensuring that the first limiting member and the second limiting member stably abut against the shaft head of the workpiece from different directions, realizing the limitation of the shaft head of the workpiece. The third limiting member slidably mounted on the base along the radial direction of the workpiece can adapt to different workpiece sizes and further strengthen the limitation of the shaft head of the workpiece. The fourth limiting member and the fifth limiting member limit the shaft tail of the workpiece from the side wall and the end face. At the same time, the fourth limiting member and the fifth limiting member slide along the axial direction of the workpiece and can be applicable to workpieces of different lengths. The limiting groove design on the fourth limiting member can realize the limitation of workpieces with different outer diameters. The moving drive assembly can drive the distance between the grinding drive assembly and the workpiece, further improving the applicable range of the device. Compared with the prior art, the limiting mechanism ensures the stability of the workpiece position, the grinding mechanism realizes the chamfering processing of the workpiece, and the cooperation between the limiting mechanism and the grinding mechanism realizes the precise chamfering processing of the workpiece, improving the quality and efficiency of the workpiece chamfering processing.

[0008] 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. A counterweight member that drives the first limiting member to keep abutting against the top of the workpiece is movably sleeved on the rotating rod.

[0009] By adopting the above technical solutions, the first limiting member rotates around its own axis, making the contact between the first limiting member and the top of the shaft head of the workpiece smoother, reducing the frictional loss between the workpiece and the first limiting member, and further reducing the influence on the positioning accuracy of the workpiece. The counterweight member is movably sleeved on the rotating rod and can automatically adjust the abutting state between the first limiting member and the top of the workpiece by using gravity, improving the stability of the limitation of the first limiting member.

[0010] Optionally, an installation seat that slides along the radial direction of the workpiece is provided on the base. The third limiting member is mounted on the installation seat and rotates around its own axis. A first adjustment hole extending along the radial direction of the workpiece is opened on the installation seat. A first locking hole is opened on the base. A first locking member that locks and fixes the slid installation seat is threadedly connected in the first locking hole.

[0011] By adopting the above technical solutions, the installation seat slides along the radial direction of the workpiece to realize the adjustment of the position of the third limiting member, so as to meet the clamping requirements for the side walls of the shaft heads of workpieces with different outer diameters. The third limiting member rotates around its own axis, reducing the frictional force between the third limiting member and the workpiece and avoiding the influence of workpiece surface wear on the positioning of the workpiece. The third limiting member slides along the radial direction through the first adjustment hole. After the first locking member passes through the first adjustment hole and is threadedly connected with the first locking hole, the installation seat can be firmly fixed on the base after sliding.

[0012] Optionally, a guide rod is fixedly installed on the base, the fourth limiting member is slidably sleeved on the guide rod along the axial direction of the workpiece, a second locking hole is formed in the fourth limiting member, and a second locking member for locking and fixing the fourth limiting member after sliding is threadedly connected in the second locking hole.

[0013] By adopting the above technical solution, the fourth limiting member can slide and adjust its position along the axial direction of the workpiece, so as to adapt to workpieces of different lengths. After sliding, it is locked and fixed by the second locking member. The setting of the guide rod provides a guiding function for the sliding of the fourth limiting member, ensuring the stability of the sliding path of the fourth limiting member.

[0014] Optionally, the fourth limiting member includes a first clamping portion and a second clamping portion that form a limiting groove. The second clamping portion is slidably installed on the first clamping portion along the radial direction of the workpiece. A second adjusting hole extending along the radial direction of the workpiece is formed in the second clamping portion, and a third locking hole is formed in the first clamping portion. A third locking member for locking and fixing the second clamping portion after sliding is threadedly connected in the third locking hole.

[0015] By adopting the above technical solution, the first clamping portion and the second clamping portion cooperate to form a limiting groove for placing workpieces with different outer diameters. The second clamping portion is slidably installed on the first clamping portion along the radial direction of the workpiece, and the size of the limiting groove can be adjusted according to the outer diameter of the workpiece, further enhancing the flexibility of the device. The third locking member is threadedly connected to the third locking hole to lock and fix the adjusted second clamping portion, ensuring the stable position of the workpiece during the processing.

[0016] Optionally, a sliding seat is slidably sleeved on the guide rod along the axial direction of the workpiece, the fifth limiting member is slidably installed on the sliding seat along the axial direction of the workpiece, a fourth locking hole is formed in the sliding seat, and a fourth locking member for locking and fixing the fifth limiting member after sliding is threadedly connected in the fourth locking hole.

[0017] By adopting the above technical solution, the sliding seat slides on the guide rod along the axial direction of the workpiece, and the fifth limiting member slides on the sliding seat along the axial direction of the workpiece, enabling the fifth limiting member to flexibly adjust its position along the axial direction of the workpiece, so as to meet the axial end face limiting requirements of workpieces with different lengths. The fourth locking member is threadedly connected to the fourth locking hole, ensuring the stable position of the adjusted fifth limiting member, improving the clamping accuracy and stability of the workpiece, and further enhancing the quality and efficiency of chamfering processing.

[0018] Optionally, the moving drive assembly includes a moving base for mounting the grinding drive assembly, a transmission assembly for driving the linear movement of the moving base, and a first driving member for driving the transmission of the transmission assembly. The transmission assembly includes a coarse adjustment rack mounted at the bottom end of the moving base and a coarse adjustment gear fixedly connected to the first driving member. The first driving member drives the coarse adjustment gear to mesh with the coarse adjustment rack so that the moving base slides along the axial direction of the workpiece on the base. A coarse adjustment scale for measuring the sliding distance of the moving base is fixedly installed on the moving base.

[0019] By adopting the above technical solution, the first driving member drives the rotation of the coarse adjustment gear, and the rotation of the coarse adjustment gear drives the transmission of the coarse adjustment rack, realizing the rapid sliding of the moving base. Furthermore, the grinding drive assembly on the moving base approaches or moves away from the workpiece to complete the feeding action of chamfering processing. The meshing transmission between the coarse adjustment rack and the coarse adjustment gear makes the sliding of the moving base smoother and more reliable, realizing the precise control of the moving distance of the grinding drive assembly. By observing the coarse adjustment scale, the sliding distance of the moving base can be intuitively measured to ensure the accuracy of the processing position.

[0020] Optionally, a fine adjustment rack is also fixedly connected to the bottom end of the moving base. A fine adjustment gear meshing with the fine adjustment rack and a second driving member for driving the rotation of the fine adjustment gear are installed on the base. The second driving member drives the fine adjustment gear to mesh with the fine adjustment rack so that the moving base slides along the axial direction of the workpiece on the base. A fine adjustment scale for measuring the sliding distance of the moving base is provided on the base.

[0021] By adopting the above technical solution, the second driving member drives the rotation of the fine adjustment gear, and the rotation of the fine adjustment gear drives the transmission of the fine adjustment rack, realizing the low-speed and stable sliding of the moving base. The meshing transmission between the fine adjustment rack and the fine adjustment gear enables the moving base to perform precise fine adjustment along the axial direction of the workpiece, thereby improving the positioning accuracy of the grinding mechanism for chamfering the workpiece. The fine adjustment scale can visually display the low-speed sliding distance of the moving base, facilitating the operator to accurately control the moving distance.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The limiting mechanism ensures the stability of the workpiece position, and the grinding mechanism realizes the chamfering of the workpiece. The cooperation between the limiting mechanism and the grinding mechanism realizes the precise chamfering of the workpiece, improving the quality and efficiency of the workpiece chamfering processing; 2. The first limiting member rotates around its own axis, making the contact between the first limiting member and the top end of the workpiece shaft head smoother, reducing the frictional loss between the workpiece and the first limiting member, and further reducing the influence on the positioning accuracy of the workpiece. The counterweight can automatically adjust the contact state between the first limiting member and the top end of the workpiece by using gravity, improving the stability of the first limiting member for limiting; 3. The first driving member drives the coarse adjustment gear to rotate. The rotation of the coarse adjustment gear drives the coarse adjustment rack to move, realizing the rapid sliding of the moving seat. As a result, the grinding driving assembly on the moving seat approaches or moves away from the workpiece, completing the feeding action of the chamfering process. 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 driving assembly. By observing the coarse adjustment scale, the distance of the rapid sliding of the moving seat can be visually measured to ensure the accuracy of the machining position. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application; Figure 2 is a partial structural schematic of Embodiment 1 of the present application Figure 1 for showing the setting relationship of the shaft head limiting component; Figure 3 is a partial structural schematic of Embodiment 1 of the present application Figure 2 for showing the setting relationship of the shaft tail limiting component; Figure 4 is a partial exploded schematic diagram of Embodiment 1 of the present application, for showing the setting relationship between the first clamping portion and the second clamping portion; Figure 5 is a partial structural schematic diagram of Embodiment 2 of the present application, for the setting relationship between the grinding wheel and the workpiece.

[0024] Reference Numerals: 1, device body; 2, base; 3, V-shaped groove; 4, limiting mechanism; 5, shaft head limiting component; 6, first limiting member; 7, second limiting member; 8, third limiting member; 9, shaft tail limiting component; 10, fourth limiting member; 11, fifth limiting member; 12, limiting groove; 13, grinding mechanism; 14, grinding driving assembly; 15, moving driving assembly; 16, rotating rod; 17, counterweight; 18, rotating motor; 19, mounting seat; 20, first adjustment hole; 21, first threaded hole; 22, first bolt; 23, guide rod; 24, second threaded hole; 25, second bolt; 26, first clamping portion; 27, second clamping portion; 28, second adjustment 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, indicating rod; 45, fine adjustment rack; 46, second rotating shaft; 47, fine adjustment gear; 48, second handle; 49, fine adjustment scale; 50, guide rail; 51, sliding groove; 52, grinding head; 53, first motor; 54, grinding wheel; 55, adjustment seat; 56, second motor; 57, ball screw pair; 58, workpiece. Detailed Description of the Invention

[0025] The following further elaborates on this application in conjunction with the attached Figures 1-5 drawings.

[0026] Embodiment 1: A chamfering device for die-casting mold fittings, referring to Figure 1 and Figure 2 , includes a device body 1. A base 2 is fixedly installed on the device body 1. A V-shaped groove 3 is formed in the end face of the base 2. A workpiece 58 is placed in the V-shaped groove 3 to prevent the workpiece 58 from rolling. A limiting mechanism 4 is installed on the base 2. The limiting mechanism 4 includes a shaft head limiting component 5. The shaft head limiting component 5 is arranged at the shaft head of the workpiece 58. The shaft head limiting component 5 includes a first limiting member 6, a second limiting member 7, and a third limiting member 8. The first limiting member 6 is rotatably installed on the base 2 and abuts against the top end of the shaft head of the workpiece 58. There are two second limiting members 7, which are rotatably installed on the base 2 around their own axes. 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 installed on the base 2 and abuts against the side wall of the shaft head of the workpiece 58. The third limiting member 8 slides along the radial direction of the workpiece 58 to keep abutting against the side walls of workpieces 58 with different outer diameters; The limiting mechanism 4 further includes a shaft tail limiting component 9. Combining with Figure 3 , the shaft tail limiting component 9 is arranged 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 installed on the base 2 and can slide axially along the workpiece 58 to adapt to workpieces 58 with different lengths. The fourth limiting member 10 abuts against the side wall of the shaft tail of the workpiece 58. The fifth limiting member 11 abuts against the end face of the shaft tail of the workpiece 58. A limiting groove 12 is formed in the fourth limiting member 10. The workpiece 58 is located in the limiting groove 12. The notch of the limiting groove 12 is adjusted along the radial direction of the workpiece 58 to adapt to workpieces 58 with different diameters; A grinding mechanism 13 is also installed on the base 2. The grinding mechanism 13 includes a grinding driving component 14 and a moving driving component 15. The moving driving component 15 drives the grinding driving component 14 to approach or move away from the workpiece 58 to meet the requirements of different chamfering positions.

[0027] Referring to Figure 1 and Figure 2, a rotating rod 16 is rotatably installed on the base 2, and a first limiting member 6 is arranged on the rotating rod 16. The rotation of the rotating rod 16 drives the first limiting member 6 to approach or move away from the workpiece 58. In this embodiment, the first limiting member 6 is a bearing, the inner ring of the bearing is fixedly installed on the rotating rod 16, and the outer ring of the bearing contacts the workpiece 58. During the chamfering process of the workpiece 58, the first limiting member 6 can rotate around its own axis with the rotation of the workpiece 58. A counterweight member 17 is sleeved on the rotating rod 16. In this embodiment, the counterweight member 17 is a counterweight block made of iron, which is used to adjust the center of gravity of the rotating rod 16 to keep the first limiting member 6 in contact with the top end of the workpiece 58. Two second limiting members 7 are arranged in the extending direction of the V-shaped groove 3, and the shaft head of the workpiece 58 is placed between the two second limiting members 7. Under the condition that the first limiting member 6 contacts the top end of the shaft head of the workpiece 58, the bottom end of the shaft head of the workpiece 58 contacts 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, and 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 during the processing of the workpiece 58, the wear between the second limiting member 7 and the workpiece 58 is further reduced.

[0028] Reference Figure 1 and Figure 2 , a mounting seat 19 is slidably installed on the base 2 near the shaft head of the workpiece 58. A first adjustment hole 20 is opened at the bottom end of the mounting seat 19, and a first locking hole is opened on the base 2. A first locking member is threadedly connected in the first locking hole. In this embodiment, the first adjustment hole 20 is a waist-shaped hole, the first adjustment hole 20 extends along the radial direction of the workpiece 58, the first locking hole is a first threaded hole 21, and the first locking member 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, so as to lock and fix the slid mounting seat 19 on the base 2. A third limiting member 8 is installed on the mounting seat 19. The mounting seat 19 slides on the base 2 along the radial direction of the workpiece 58 to realize the adjustment of the position of the third limiting member 8 in the radial direction. In this embodiment, the third limiting member 8 is a bearing, the inner ring of the bearing is fixedly installed on the mounting seat 19, and the outer ring of the bearing contacts the workpiece 58. During the chamfering process of the workpiece 58, the third limiting member 8 can rotate around its own axis with the rotation of the workpiece 58.

[0029] Reference Figure 1 and Figure 3, one end of the base 2 is fixedly installed with a guide rod 23. 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 axially along the guide rod 23. A second locking hole is provided on the end face of the fourth limiting member 10, and a second locking member is threadedly connected in 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, so as to lock and fix the fourth limiting member 10 on the guide rod 23.

[0030] Reference Figure 3 and Figure 4 , the fourth limiting member 10 includes a first clamping portion 26 and a second clamping portion 27. The limiting groove 12 is formed by the first clamping portion 26 and the second clamping portion 27. A third locking hole is provided at the bottom end of the first clamping portion 26. The second clamping portion 27 is L-shaped, and a second adjusting hole 28 is provided at the bottom end of the second clamping portion 27. A third locking member is threadedly connected in the third locking hole. In this embodiment, the second adjusting hole 28 is a waist-shaped hole, and the second adjusting hole 28 extends along the radial direction of 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, so as to lock and fix the slid second clamping portion 27 and the first clamping portion 26, and realize the adjustment of the opening size of the limiting groove 12.

[0031] Reference Figure 3 and Figure 4 , a sliding seat 31 is also 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, and a fourth locking member is threadedly connected in 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 with the fourth threaded hole 33, so as to lock and fix the fifth limiting member 11 on the sliding seat 31, and keep the fifth limiting member 11 in contact with the end face of the tail of the workpiece 58. A fifth threaded hole 35 is also provided on the sliding seat 31, and a fifth bolt 36 is threadedly connected in the fifth threaded hole 35. The fifth bolt 36 is threadedly connected with the fifth threaded hole 35, so as to lock and fix the slid sliding seat 31 on the guide rod 23.

[0032] Reference Figure 1 and Figure 2, the moving drive assembly 15 includes a moving base 37, a transmission assembly 38, and a first driving member. The grinding drive assembly 14 is installed 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 installed at 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 to the first rotating shaft 41. The first driving member is fixedly installed at one end of the first rotating shaft 41. In this embodiment, the first driving member is a first handle 42. Rotating the first handle 42 drives the first rotating shaft 41 to rotate. 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 to realize the axial sliding of the moving base 37 along the workpiece 58. The tooth pitch between the coarse adjustment gear 40 and the coarse adjustment rack 39 is relatively large, and the moving base 37 can quickly adjust its position. A coarse adjustment scale 43 is installed at one end of the moving base 37. An indicating rod 44 is fixedly installed on the base 2. By observing the corresponding position between the indicating rod 44 and the coarse adjustment scale 43, the displacement of the moving base 37 can be accurately determined.

[0033] Reference Figure 1 and Figure 2 , a fine adjustment rack 45 is also fixedly connected to the bottom end of the moving base 37. A second rotating shaft 46 is rotatably installed on the base 2. A fine adjustment gear 47 is coaxially fixed to the second rotating shaft 46. A second driving member is fixedly installed at one end of the second rotating shaft 46. In this embodiment, the second driving member 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 adjustment gear 47 to rotate. The fine adjustment gear 47 rotates and meshes with the fine adjustment rack 45 to realize the axial sliding of the moving base 37 along the workpiece 58. The tooth pitch between the fine adjustment gear 47 and the fine adjustment rack 45 is relatively small, and the sliding speed of the moving base 37 is slow, realizing fine adjustment of the position. A fine adjustment scale 49 is provided on the second rotating shaft 46 to accurately control the sliding distance of the moving base 37.

[0034] Reference Figure 1 and Figure 2 , when the coarse adjustment gear 40 meshes with the coarse adjustment rack 39 to drive the rapid sliding of the moving base 37, the movement of the fine adjustment rack 45 drives the rotation of the fine adjustment gear 47. When the fine adjustment gear 47 meshes with the fine adjustment rack 45 to drive the slow sliding of the moving base 37, the movement of the coarse adjustment rack 39 drives the rotation of the coarse adjustment gear 40, so that the two sets of gear-rack structures do not interfere with each other during transmission, ensuring the smoothness and reliability of the structural 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. A sliding groove 51 that is slidably matched with the guide rail 50 is opened at the bottom end of the moving base 37, making the sliding process of the moving base 37 smoother.

[0035] Reference Figure 1 and Figure 2, the grinding drive assembly 14 includes a grinding driver and a grinding member. The grinding driver is fixedly installed on the moving seat 37. In this embodiment, the grinding member is a grinding head 52, and the grinding driver is a first motor 53. The output shaft of the first motor 53 is coaxially fixed to the grinding head 52, and the axis of the grinding head 52 coincides with the axis of the workpiece 58, so as to chamfer the inner hole of the workpiece 58.

[0036] The implementation principle of Embodiment 1 of this application is as follows: For chamfering the workpiece 58, first place the workpiece 58 in the V-shaped groove 3. According to the outer diameter and length of the workpiece 58, adjust the position of the third limiting member 8. The second limiting member 7 abuts against the top end of the shaft head of the workpiece 58, and then the bottom end of the shaft head of the workpiece 58 abuts against the second limiting member 7, so as to limit the shaft head of the workpiece 58; adjust the fourth limiting member 10 and the fifth limiting member 11, move the fourth limiting member 10 to the tail of the shaft of the workpiece 58, adjust the distance between the first clamping portion 26 and the second clamping portion 27, and adjust the opening size of the limiting groove 12, so that the first clamping portion 26 and the second clamping portion 27 abut against the side wall of the tail of the shaft of the workpiece 58, and adjust the fifth limiting member 11 to keep the fifth limiting member 11 abutting against the end face of the tail of the shaft of the workpiece 58, so as to limit the tail of the shaft of the workpiece 58; according to the length of the workpiece 58, first quickly adjust the position of the moving seat 37 through the first handle 42, and then precisely and finely adjust the position of the moving seat 37 through the second handle 48. After the grinding head 52 moves to a suitable position, drive the first motor 53 to drive the grinding head 52 to chamfer the inner hole of the workpiece 58.

[0037] Embodiment 2: A chamfering device for die-casting mold accessories, refer to Figure 5 , which is different from Embodiment 1 in that the grinding member is a grinding wheel 54. The grinding wheel 54 is detachably installed on the output shaft of the first motor 53, and the grinding wheel 54 is tangent to the circumference of the workpiece 58, so as to chamfer the outer edge of the workpiece 58. An adjusting seat 55 is also slidably installed on the base 2. The moving drive assembly 15 is installed on the adjusting seat 55. A second motor 56 and a ball screw pair 57 are installed on the base 2. The second motor 56 is coaxially fixed to the screw of the ball screw pair 57. The screw of the ball screw pair 57 extends along the radial direction of the workpiece 58. The second motor 56 cooperates with the ball screw pair 57 to drive the adjusting seat 55 to slide along the radial direction of the workpiece 58, so that the grinding wheel 54 moves to the circumferential edge of the workpiece 58 and is tangent to the circumference of the workpiece 58, which is convenient for chamfering the outer side of the workpiece 58.

[0038] The implementation principle of Embodiment 2 of this application is as follows: After the rough adjustment and fine adjustment of the moving seat 37, drive the second motor 56 to drive the adjusting seat 55 to move along the radial direction of the workpiece 58. The grinding wheel 54 moves and is tangent to the circumference of the workpiece 58. Before chamfering, replace the grinding wheel 54 with the corresponding specification according to the chamfering requirements.

[0039] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A chamfering device for die casting mold accessories, characterized in that: The invention comprises a device body (1), wherein a base (2) for placing a workpiece (58) is installed on the device body (1), a limiting mechanism (4) for clamping the workpiece (58) and a grinding mechanism (13) for chamfering the workpiece (58) are installed on the base (2), wherein the limiting mechanism (4) comprises a shaft head limiting assembly (5) and a shaft tail limiting assembly (9) which are in conflict with the workpiece (58), wherein the shaft head limiting assembly (5) comprises a first limiting member (6) in conflict with the top end of the shaft head of the workpiece (58), a second limiting member (7) in conflict with the bottom end of the shaft head of the workpiece (58), and a third limiting member (8) in conflict with the side wall of the shaft head of the workpiece (58), wherein the first limiting member (6) and the second limiting member (7) are rotatable. The workpiece (58) is mounted on the base (2), the third limiting member (8) is mounted on the base (2) in a radially sliding manner along the workpiece (58), the shaft tail limiting assembly (9) comprises a fourth limiting member (10) which abuts against the shaft tail side wall of the workpiece (58), and a fifth limiting member (11) which abuts against the shaft tail end face of the workpiece (58), the fourth limiting member (10) and the fifth limiting member (11) are mounted on the base (2) in an axially sliding manner along the workpiece (58), the fourth limiting member (10) is formed with a limiting groove (12) for placing workpieces (58) of different outer diameters, and the grinding mechanism (13) comprises a grinding drive assembly (14) and a moving drive assembly (15) for driving the grinding drive assembly (14) to approach or move away from the workpiece (58).

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

3. The chamfering device for die-casting mold accessories according to claim 1, characterized in that: The base (2) is provided with a mounting seat (19) which 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 adjustment hole (20) which extends radially along the workpiece (58); the base (2) is provided with a first locking hole; a first locking member is threadedly connected to the first locking hole to lock and fix the mounting seat (19) after sliding.

4. The chamfering device for die-casting mold accessories according to claim 1, characterized in that: A guide rod (23) is fixedly mounted on the base (2); the fourth position 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 position limiting member (10); a second locking member is threadedly connected in the second locking hole to lock and fix the fourth position limiting member (10) after sliding.

5. The chamfering device for die-casting mold accessories according to claim 1, characterized in that: The fourth limiting member (10) comprises a first clamping portion (26) and a second clamping portion (27) forming a limiting groove (12); the second clamping portion (27) is radially slidably mounted on the first clamping portion (26) along the workpiece (58); the second clamping portion (27) is provided with a second adjustment hole (28) extending radially along the workpiece (58); the first clamping portion (26) is provided with a third locking hole; a third locking member is threadedly connected to the third locking hole for locking and fixing the second clamping portion (27) after sliding.

6. The chamfering device for die-casting mold accessories according to claim 4, characterized in that: A sliding seat (31) is provided on the guide rod (23) so as to slide axially along the workpiece (58); the fifth position-limiting member (11) is mounted on the sliding seat (31) so as to slide axially along the workpiece (58); a fourth locking hole is provided on the sliding seat (31); a fourth locking member is threadedly connected in the fourth locking hole so as to lock and fix the fifth position-limiting member (11) after sliding.

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

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

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