Five-axis engraving and grinding machine for mold machining

Abstract

The utility model discloses a five-axis engraving and grinding machine for mould processing, which comprises a rack, a grinding wheel, a grinding wheel and a driving device, a mold grinding head; the rotating device drives the mold grinding head to rotate; the first sliding assembly drives the mold grinding head to slide in the x direction; the second sliding assembly drives the mold grinding head to slide in the y direction; the third sliding assembly drives the mold grinding head to slide in the z direction; the first rotating assembly drives the mold grinding head to rotate, and the rotating axial direction is arranged in the vertical direction; and the second rotating assembly drives the mold grinding head to rotate, and the rotating axial direction is horizontally arranged. By the adoption of the scheme, the five-axis carving and grinding machine for mold machining can achieve five-axis control over the mold grinding head through x-direction sliding, y-direction sliding, z-direction sliding, vertical rotation and horizontal rotation, and therefore molds in complex shapes can be machined with high precision.

Description

Technical Field

[0001] The utility model belongs to the field of mold production, and particularly relates to a five-axis engraving and grinding machine for mold processing. Background Art

[0002] A mold is various molds and tools used in industrial production to obtain required products through methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc. In short, a mold is a tool for making formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the external shape of articles by changing the physical state of the formed material. It is known as the "mother of industry".

[0003] The production of existing molds is formed by machining a steel plate through a machine tool to form a blank, and then the blank is polished by a grinding head rotating at a high speed to form a mold that meets the requirements.

[0004] For existing small-volume molds, due to their complex shapes and high precision requirements, the existing three-axis machine tools equipped with grinding heads cannot meet the processing requirements. Therefore, the method of manually controlling a handheld engraving and grinding machine is adopted for grinding and polishing, resulting in low processing efficiency and large differences between products. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a five-axis engraving and grinding machine for mold processing, which realizes five-axis control of the mold grinding head through three-way sliding in the x, y, and z directions, as well as vertical rotation and horizontal rotation, so as to process molds with complex shapes with high precision.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A five-axis engraving and grinding machine for mold processing, characterized in that it includes: a frame, on which a workbench is provided for placing the mold to be processed; a mold grinding head; a rotating device for driving the mold grinding head to rotate so that the mold grinding head grinds or polishes the mold on the workbench; a first sliding component for driving the mold grinding head to slide relative to the workbench in the x direction; a second sliding component for driving the mold grinding head to slide relative to the workbench in the y direction; a third sliding component for driving the mold grinding head to slide relative to the workbench in the z direction; a first rotating component for driving the mold grinding head to rotate relative to the workbench, and the axis of rotation is arranged vertically; a second rotating component for driving the mold grinding head to rotate relative to the workbench, and the axis of rotation is arranged horizontally.

[0008] The present utility model is further configured as follows: The mold grinding head includes: a rod body, with a connecting section provided at one end of the rod body; an elastic body, with a first inner cavity provided at one end of the elastic body, and the connecting section is disposed in the first inner cavity; a head, with a mounting end and a grinding end provided on the head, a second inner cavity provided on the mounting end, the elastic body is placed in the second inner cavity, and the connecting section is partially or entirely located in the second inner cavity.

[0009] The present utility model is further configured as follows: The surface of the grinding end is provided with a grinding surface in an arc shape; or, the surface of the grinding end is provided with a grinding surface in a cylindrical shape, the outer periphery of the mounting end is cylindrical, and the diameter of the grinding surface is greater than the outer diameter of the mounting end.

[0010] The present utility model is further configured as follows: The elastic body includes a spherical portion, and the outer peripheral cross-section of the spherical portion first increases and then decreases from the end close to the rod body to the end far from the rod body.

[0011] The present utility model is further configured as follows: A pushing plane is provided at the end of the spherical portion facing away from the rod body, and a butting plane parallel to and abutting against the pushing plane is provided in the second inner cavity; the pushing plane is perpendicular to the axial direction of the rod body; and / or, a columnar portion is provided at the end of the spherical portion facing the ejector rod, and a columnar cavity adapted to the shape and size of the columnar portion is provided in the second inner cavity; and / or, a plurality of clamping portions are provided on the outer periphery of the spherical portion along the circumferential direction, and a plurality of clamping grooves are provided in the second inner cavity, and the clamping portions are clamped in the clamping grooves to achieve circumferential limitation of the elastic body and the head.

[0012] The present utility model is further configured as follows: The first sliding assembly includes a first sliding member and a first driving assembly, the first sliding member is slidably disposed on the frame along the x direction, and the first driving assembly is used to drive the first sliding member to slide; the second sliding assembly includes a second sliding member and a second driving assembly, the second sliding member is slidably disposed on the first sliding member along the y direction, and the second driving assembly is used to drive the second sliding member to slide; the third sliding assembly includes a third sliding member and a third driving assembly, the third sliding member is slidably disposed on the second sliding member along the z direction, and the third driving assembly is used to drive the third sliding member to slide; the first rotating assembly includes a first rotating member and a fourth driving assembly, the first rotating member is rotatably disposed on the third sliding member with a vertical axis, and the fourth driving assembly is used to drive the first rotating member to rotate; the second rotating assembly includes a second rotating member and a fifth driving assembly, the second rotating member is rotatably disposed on the first rotating member with a horizontal axis, and the fifth driving assembly is used to drive the second rotating member to rotate.

[0013] The present utility model is further configured as follows: The first driving assembly includes a first driving device, a first lead screw, a first ball nut, a first linear slide rail, and a first sliding seat. The first lead screw is rotatably arranged on the frame, the first linear slide rail is fixedly arranged on the frame, and the length directions of the first lead screw and the first linear slide rail are along the x direction. The first driving device is used to drive the first lead screw to rotate. The first ball nut and the first sliding seat are fixedly arranged on the first sliding member, and the first ball nut is in threaded engagement with the first lead screw, and the first sliding seat is slidably engaged with the first linear slide rail; and / or, the second driving assembly includes a second driving device, a second lead screw, a second ball nut, a second linear slide rail, and a second sliding seat. The second lead screw is rotatably arranged on the first sliding member, the second linear slide rail is fixedly arranged on the second sliding member, and the length directions of the second lead screw and the second linear slide rail are along the y direction. The second driving device is used to drive the second lead screw to rotate. The second ball nut and the second sliding seat are fixedly arranged on the second sliding member, and the second ball nut is in threaded engagement with the second lead screw, and the second sliding seat is slidably engaged with the second linear slide rail; and / or, the third driving assembly includes a third driving device, a third lead screw, a third ball nut, a third linear slide rail, and a third sliding seat. The third lead screw is rotatably arranged on the second sliding member, the third linear slide rail is fixedly arranged on the third sliding member, and the length directions of the third lead screw and the third linear slide rail are along the z direction. The third driving device is used to drive the third lead screw to rotate. The third ball nut is fixedly arranged on the third sliding member, the third sliding seat is fixedly arranged on the second sliding member, and the third ball nut is in threaded engagement with the third lead screw, and the third sliding seat is slidably engaged with the third linear slide rail; and / or, the fourth driving assembly includes a fourth driving device, and the fourth driving device is fixedly arranged on the third sliding member. The output end of the fourth driving device faces downward and is connected to the first rotating member so as to drive the first rotating member to rotate under the operation of the fourth driving device; and / or, the fifth driving assembly includes a fifth driving device, and the fifth driving device is fixedly arranged on the first rotating member. The output end of the fifth driving device faces horizontally and is connected to the second rotating member so as to drive the second rotating member to rotate under the operation of the fifth driving device.

[0014] The present utility model is further configured as follows: The number of the first driving assemblies is two groups, and the two groups of the first driving assemblies are respectively arranged at the two length ends of the second sliding member.

[0015] The present utility model is further configured as follows: The fourth driving assembly includes a fourth power-off brake, and the fourth power-off brake is used to brake the first rotating member; and / or, the fifth driving assembly includes a fifth power-off brake, and the fifth power-off brake is used to brake the second rotating member; and / or, at least one of the first driving device, the second driving device, the third driving device, the fourth driving device, and the fifth driving device includes a harmonic reducer and / or a worm and worm gear reducer.

[0016] The utility model is further configured as follows: a grinding assembly is arranged on the frame, the grinding assembly includes a grinding motor and a repair grinding head, the grinding motor is used to drive the repair grinding head to rotate, and the repair grinding head is provided with a grinding surface for grinding the outer surface of the die grinding head.

[0017] By adopting the above technical solution, the die to be ground and polished is fixedly placed on the workbench to keep stable, and the die grinding head realizes three-dimensional sliding movements in the x, y, and z directions, as well as rotations with the vertical direction as the rotation axis and rotations with the horizontal direction as the rotation axis under the action of the first sliding assembly, the second sliding assembly, the third sliding assembly, the first rotating assembly, and the second rotating assembly. The combination can realize high-precision grinding and polishing of the die with complex shape to be processed, so as to improve the processing efficiency and eliminate the differences between dies with the same structure. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is the assembly drawing of the specific implementation mode of the present utility model;

[0020] Figure 2 It is the partial structure assembly drawing of the first sliding assembly in the specific implementation mode of the present utility model;

[0021] Figure 3 It is the partial structure assembly drawing of the first sliding assembly in the specific implementation mode of the present utility model;

[0022] Figure 4 It is the partial structure assembly drawing of the second sliding assembly in the specific implementation mode of the present utility model;

[0023] Figure 5 It is the partial structure assembly drawing of the second sliding assembly in the specific implementation mode of the present utility model;

[0024] Figure 6 It is the partial structure assembly drawing of the third sliding assembly in the specific implementation mode of the present utility model;

[0025] Figure 7 It is the partial structure assembly drawing of the third sliding assembly in the specific implementation mode of the present utility model;

[0026] Figure 8Exploded view of partial structures of the first rotating component and the second rotating component in the specific embodiment of the present utility model;

[0027] Figure 9 Cross-sectional view of the mold grinding head in the specific embodiment of the present utility model;

[0028] Figure 10 Exploded view of the mold grinding head in the specific embodiment of the present utility model;

[0029] Figure 11 is Figure 9 partial enlarged view of;

[0030] Figure 12 Schematic diagram of the elastic body in the specific embodiment of the present utility model;

[0031] Figure 13 Stereoscopic cross-sectional view of the head in the specific embodiment of the present utility model;

[0032] Figure 14 Cross-sectional view of the mold grinding head in another embodiment in the specific embodiment of the present utility model.

[0033] Explanation of reference numerals:

[0034] 1. Frame;

[0035] 11. Workbench;

[0036] 2. Mold grinding head;

[0037] 21. Rotating device; 22. Rod body; 23. Elastic body; 24. Head;

[0038] 221. Connecting section; 222. Contact end face; 231. First embedded cavity; 232. Spherical part; 233. Columnar part; 234. Clamping part; 241. Installation end; 242. Grinding end;

[0039] 2321. Thrust plane; 2411. Second embedded cavity; 2421. Grinding surface;

[0040] 24111. Spherical cavity; 24112. Contact plane; 24113. Columnar cavity; 24114. Clamping groove;

[0041] 3. First sliding component;

[0042] 31. First sliding part; 32. First driving component;

[0043] 322. First lead screw; 323. First ball nut; 324. First linear slide rail; 325. First slide seat;

[0044] 4. Second sliding component;

[0045] 41. Second sliding member; 42. Second driving assembly;

[0046] 422. Second lead screw; 423. Second ball nut; 424. Second linear slide rail; 425. Second slide block;

[0047] 5. Third sliding assembly;

[0048] 51. Third sliding member; 52. Third driving assembly;

[0049] 522. Third lead screw; 523. Third ball nut; 524. Third linear slide rail; 525. Third slide block;

[0050] 6. First rotating assembly;

[0051] 61. First rotating member; 62. Fourth driving assembly;

[0052] 621. Fourth driving device;

[0053] 7. Second rotating assembly;

[0054] 71. Second rotating member; 72. Fifth driving assembly;

[0055] 721. Fifth driving device; 722. Fifth power-off brake;

[0056] 8. Polishing assembly;

[0057] 81. Polishing motor; 82. Repairing grinding head;

[0058] 821. Polishing surface. Detailed implementation manners

[0059] In order to enable those skilled in the art to better understand the present utility model and thus more clearly define the scope of protection required by the present utility model, the present utility model will be described in detail below with respect to certain specific embodiments of the present utility model. It should be noted that the following are only some specific implementation manners of the concept of the present utility model, which are only a part of the embodiments of the present utility model. The specific and direct descriptions of the relevant structures are only for facilitating the understanding of the present utility model, and each specific feature does not of course and directly limit the scope of implementation of the present utility model. Conventional selections and substitutions made by those skilled in the art under the guidance of the concept of the present utility model should be regarded as being within the scope of protection required by the present utility model.

[0060] As Figure 1 shown, the present utility model discloses a five-axis engraving and grinding machine for mold processing, including:

[0061] A frame 1, on which a workbench 11 is provided for placing the mold to be processed;

[0062] Mold grinding head 2;

[0063] Rotating device 21. Specifically, the rotating device 21 uses a motor. The mold grinding head 2 is installed at the output end of the rotating device 21, and under the operation of the rotating device 21, the mold grinding head 2 rotates at a high speed so that the mold grinding head 2 rotating at a high speed grinds or polishes the mold on the workbench 11;

[0064] The first sliding assembly 3 is used to drive the mold grinding head 2 to slide relative to the workbench 11 in the x direction;

[0065] The second sliding assembly 4 is used to drive the mold grinding head 2 to slide relative to the workbench 11 in the y direction;

[0066] The third sliding assembly 5 is used to drive the mold grinding head 2 to slide relative to the workbench 11 in the z direction;

[0067] The first rotating assembly 6 is used to drive the mold grinding head 2 to rotate relative to the workbench 11, and the axis of rotation is arranged vertically;

[0068] The second rotating assembly 7 is used to drive the mold grinding head 2 to rotate relative to the workbench 11, and the axis of rotation is arranged horizontally.

[0069] Therefore, the mold to be ground and polished is fixedly placed on the workbench 11 to maintain stability, and the mold grinding head 2 realizes three-way sliding motions in the x, y, and z directions, as well as rotation with the vertical as the axis of rotation and rotation with the horizontal direction as the axis of rotation under the action of the first sliding assembly 3, the second sliding assembly 4, the third sliding assembly 5, the first rotating assembly 6, and the second rotating assembly 7. The combination can realize high-precision grinding and polishing of the mold with complex shapes that need to be processed, so as to improve the processing efficiency and eliminate the differences between molds with the same structure.

[0070] Among them, the first sliding component 3 in this embodiment includes a first slider 31 and a first driving component 32. The first slider 31 is slidably arranged on the frame 1 in the x direction, and the first driving component 32 is used to drive the first slider 31 to slide; the second sliding component 4 includes a second slider 41 and a second driving component 42. The second slider 41 is slidably arranged on the first slider 31 in the y direction, and the second driving component 42 is used to drive the second slider 41 to slide; the third sliding component 5 includes a third slider 51 and a third driving component 52. The third slider 51 is slidably arranged on the second slider 41 in the z direction, and the third driving component 52 is used to drive the third slider 51 to slide; the first rotating component 6 includes a first rotating member 61 and a fourth driving component 62. The first rotating member 61 is rotatably arranged on the third slider 51 with the vertical direction as the rotation axis, and the fourth driving component 62 is used to drive the first rotating member 61 to rotate; the second rotating component 7 includes a second rotating member 71 and a fifth driving component 72. The second rotating member 71 is rotatably arranged on the first rotating member 61 with the horizontal direction as the rotation axis, and the fifth driving component 72 is used to drive the second rotating member 71 to rotate; the rotating device 21 is installed on the second rotating member.

[0071] Therefore, 1. The first driving component 32 drives the first sliding member 31 to slide along the x-direction, so that the mold grinding head 2, together with the second sliding assembly 4, the third sliding assembly 5, the first rotating assembly 6, and the second rotating assembly 7, slide synchronously along the x-direction. Since the first sliding member 31 bears the most structures, the first sliding member 31 sliding along the x-direction is supported on the frame 1 to ensure the stability of the supporting slide. 2. The second driving component 42 drives the second sliding member 41 to slide along the y-direction, so that the mold grinding head 2, together with the third sliding assembly 5, the first rotating assembly 6, and the second rotating assembly 7, slide synchronously along the y-direction. Since the second sliding member 41 bears the structures second only to the first sliding member 31, the second sliding member 41 sliding along the y-direction is supported on the first sliding member 31 to ensure the stability of the supporting slide. 3. The third driving component 52 drives the third sliding member 51 to slide along the z-direction, so that the mold grinding head 2, together with the first rotating assembly 6 and the second rotating assembly 7, slide synchronously along the z-direction. Although the third sliding member 51 bears the least structures in the x, y, and z directions, it bears more structures than the rotating first rotating assembly 6 and second rotating assembly 7. Therefore, the third sliding member 51 sliding along the z-direction is supported on the second sliding member 41 to ensure the stability of the supporting slide. 4. The fourth driving component 62 drives the first rotating member 61 to rotate axially in the vertical direction, so that the mold grinding head 2, together with the second rotating assembly 7, rotate synchronously axially in the vertical direction. Since the first rotating member 61 rotating axially in the vertical direction bears the second rotating assembly 7, and the circumferential rotation of the first rotating member 61 stably bears to ensure the stability of the supporting rotation. 5. The fifth driving component 72 drives the second rotating member 71 to rotate axially in the horizontal direction, so that the mold grinding head 2 rotates axially in the horizontal direction. Since the second rotating member 71 bears the least structures compared with the first sliding member, the second sliding member, the third sliding member, and the first rotating member 61, the stability of the supporting rotation is ensured.

[0072] Combined Figures 2 - 8 as shown:

[0073] Specifically, the first driving assembly 32 includes a first driving device, a first lead screw 322, a first ball nut 323, a first linear slide rail 324 and a first slide block 325. The first lead screw 322 is rotatably arranged on the frame 1 by means of bearings. The first linear slide rail 324 is fixedly arranged on the frame 1 by bolts. The length directions of the first lead screw 322 and the first linear slide rail 324 are along the x direction. The first driving device is located at one axial end of the first lead screw 322, and the output shaft of the first driving device and the first lead screw 322 are fixedly connected by means of a coupling, so as to realize that the first driving device works to drive the first lead screw 322 to rotate. The first ball nut 323 and the first slide block 325 are fixedly arranged on the first sliding member 31 by bolts, and the first ball nut 323 is in threaded fit with the first lead screw 322, and the first slide block 325 is in sliding fit with the first linear slide rail 324. When the first driving device works to rotate the first lead screw 322, the first ball nut 323 and the first lead screw 322 are in threaded fit, so that the first sliding member 31 realizes sliding drive under the sliding fit of the first linear slide rail 324 and the first slide block 325.

[0074] Specifically, the second driving assembly 42 includes a second driving device, a second lead screw 422, a second ball nut 423, a second linear slide rail 424 and a second slide block 425. The second lead screw 422 is rotatably arranged on the first sliding member 31 by means of bearings. The second linear slide rail 424 is fixedly arranged on the second sliding member 41 by bolts. The length directions of the second lead screw 422 and the second linear slide rail 424 are along the y direction. The second driving device is located at one axial end of the second lead screw 422, and the output shaft of the second driving device and the second lead screw 422 are fixedly connected by means of a coupling, so as to realize that the second driving device works to drive the second lead screw 422 to rotate. The second ball nut 423 and the second slide block 425 are fixedly arranged on the second sliding member 41 by bolts, and the second ball nut 423 is in threaded fit with the second lead screw 422, and the second slide block 425 is in sliding fit with the second linear slide rail 424. When the second driving device works to rotate the second lead screw 422, the second ball nut 423 and the second lead screw 422 are in threaded fit, so that the second sliding member 41 realizes sliding drive under the sliding fit of the second linear slide rail 424 and the second slide block 425.

[0075] Specifically, the third driving assembly 52 includes a third driving device, a third lead screw 522, a third ball nut 523, a third linear slide rail 524, and a third slide block 525. The third lead screw 522 is rotatably arranged on the second sliding member 41 by means of bearings. The third linear slide rail 524 is fixedly arranged on the third sliding member 51 by means of bolts. The lengths of the third lead screw 522 and the third linear slide rail 524 are along the z direction. The third driving device is located at one axial end of the third lead screw 522, and the output shaft of the third driving device and the third lead screw 522 are fixedly connected by means of a coupling, so as to enable the third driving device to drive the third lead screw 522 to rotate. The third ball nut 523 is fixedly arranged on the third sliding member 51 by means of bolts. The third slide block 525 is fixedly arranged on the second sliding member 41 by means of bolts. The third ball nut 523 is in threaded fit with the third lead screw 522, and the third slide block 525 is in sliding fit with the third linear slide rail 524. When the third driving device works to rotate the third lead screw 522, the third ball nut 523 and the third lead screw 522 are in threaded fit, so that the third sliding member 51 realizes sliding drive under the sliding fit of the third linear slide rail 524 and the third slide block 525.

[0076] Specifically, the fourth driving assembly 62 includes a fourth driving device 621. The fourth driving device 621 is fixedly arranged on the third sliding member 51 by means of bolts. The output end of the fourth driving device 621 faces downward and is fixedly connected to the first rotating member 61 by means of bolts, so as to drive the first rotating member 61 to rotate when the fourth driving device 621 works.

[0077] Specifically, the fifth driving assembly 72 includes a fifth driving device 721. The fifth driving device 721 is fixedly arranged on the first rotating member 61 by means of bolts. The output end of the fifth driving device 721 faces horizontally and is fixedly connected to the second rotating member 71 by means of bolts, so as to drive the second rotating member 71 to rotate when the fifth driving device 721 works.

[0078] Among them, the first driving device, the second driving device, the third driving device, the fourth driving device 621, and the fifth driving device 721 all adopt a combination of a servo motor and a speed reducer, so as to realize the position adjustment of the mold grinding head 2 by using the rotation output of the high-precision servo motor and assisted by the deceleration of the speed reducer.

[0079] Preferably, the number of the first driving assemblies 32 in this embodiment is two groups. The two groups of first driving assemblies 32 are respectively arranged at the two length ends of the second sliding member 41, so as to ensure stability by supporting and driving the two ends of the first sliding member 31 with the most load-bearing structures through the two groups of first driving assemblies 32.

[0080] In addition, the fifth driving component 72 in this embodiment includes a fifth power-off brake 722, and the fifth power-off brake 722 is used to brake the second rotating member 71, so that during the process when the second rotating member 71 does not need to rotate, the first rotating member 61 and the second rotating member 71 can be highly stably fixed through the fifth power-off brake 722 to ensure the machining accuracy.

[0081] In other embodiments, the fourth driving component 62 includes a fourth power-off brake, and the fourth power-off brake is used to brake the first rotating member 61, so that during the process when the first rotating member 61 does not need to rotate, the first rotating member 61 and the third sliding member 51 can be highly stably fixed through the fourth power-off brake to ensure the machining accuracy.

[0082] In comparison, since the rotation axis of the first rotating member 61 relative to the third sliding member 51 is arranged vertically, it is not easy to deflect under the action of gravity and has lower requirements for anti-rotation, while the rotation axis of the second rotating member 71 relative to the first rotating member 61 is arranged horizontally, and it is easy to deflect under the action of gravity. To ensure the machining accuracy, the function of the fifth power-off brake 722 is more important than that of the fourth power-off brake.

[0083] Preferably, the first driving device, the second driving device, the third driving device, the fourth driving device 621 and the fifth driving device 721 all include harmonic speed reducers, so as to provide a larger transmission ratio, higher load-bearing capacity, higher transmission accuracy, higher transmission efficiency, smooth movement, simple structure, small volume, light weight, and can transmit motion to a closed space by using the harmonic speed reducers.

[0084] Preferably, the first driving device, the second driving device, the third driving device, the fourth driving device 621 and the fifth driving device 721 can also include worm and worm wheel speed reducers, so as to achieve high energy efficiency, stronger load-bearing capacity, compact structure, wide speed range, low noise, smooth transmission, self-locking function, simple structure and convenient maintenance by using the worm and worm wheel speed reducers.

[0085] Among them, in combination with Figures 9 - 13 the shown mold grinding head 2 includes:

[0086] a rod body 22, the rod body 22 is generally cylindrical, and the axis of the rod body 22 is arranged vertically. In addition, a cylindrical connecting section 221 is arranged at the lower end of the rod body 22;

[0087] an elastic body 23, a first embedded cavity 231 is arranged at the upper end of the elastic body 23, and the shape of the first embedded cavity 231 is adapted to the shape of the connecting section 221, so that the connecting section 221 is arranged in the first embedded cavity 231;

[0088] The head 24 has an installation end 241 at the upper end and a grinding end 242 at the lower end. The installation end 241 is provided with a second embedded cavity 2411. The elastomer 23 is placed in the second embedded cavity 2411. In addition, the connecting section 221 is entirely located in the second embedded cavity 2411.

[0089] Therefore, the rod body 22 and the head 24 are connected by the elastomer 23 as an intermediate member. During grinding and polishing, the five-axis system applies a large pressure to the rod body 22, and the acting force is transmitted to the head 24 under the deformation of the elastomer 23. The head 24 effectively adheres to the surface of the mold to be ground and polished. During the movement of the grinding end 242, even if the head 24 passes through an uneven surface, the elastomer 23 will elastically adapt to ensure that the grinding end 242 always contacts the mold surface, thereby improving the precision of grinding and polishing. Mirror polishing can be completed. 1. When the head 24 passes through the gradually rising mold surface, the elastomer 23 is further compressed, and the head 24 is adapted to lift, preventing the head 24 from not lifting with the mold surface, which may cause a sharp increase in the interaction force between the head 24 and the mold surface, resulting in damage to the grinding head and wear of the mold surface to be polished. 2. When the head 24 passes through the gradually decreasing mold surface, the elastomer 23 resets, and the head 24 moves downward to ensure contact with the mold surface, preventing the head 24 from detaching from the mold surface to be polished, resulting in incomplete coverage of the polishing area. In summary, more precise polishing is achieved.

[0090] Among them, the elastomer 23 is filled in the second embedded cavity 2411 by an injection molding process in the alignment state of the mold grinding head 2 and the rod body 22, so as to achieve a high-strength connection between the elastomer 23 and the head 24.

[0091] As Figure 9 shown, in an embodiment, the outer periphery of the installation end 241 is cylindrical, and the grinding end 242 is provided with a grinding surface 2421 in the shape of a hemisphere, so as to perform in-depth grinding and polishing on the concave mold surface through the hemispherical grinding surface 2421, better adapting to molds with complex shapes. In addition, due to the different radii at different positions of the hemispherical grinding surface 2421, when the mold grinding head 2 rotates at the same speed, the position with a larger radius can generate a greater cutting force. Therefore, during fine machining, slow cutting can be performed using the position with a smaller radius, and during rough machining, fast cutting can be performed using the position with a larger radius. In addition, the machining of the mold can be controlled according to the requirements at different positions of the grinding surface 2421.

[0092] As Figure 14As shown, in another embodiment, the outer perimeters of the mounting end 241 and the grinding end 242 are both cylindrical, and a cylindrical grinding surface 2421 is formed on the outer perimeter of the grinding end 242. The diameter of the grinding surface 2421 is greater than the outer diameter of the mounting end 241, so as to quickly fit and polish the flat die surface through the cylindrical grinding surface 2421 to improve the processing efficiency. In addition, since the grinding end 242 is cylindrical, it is also possible to effectively grind and polish the L-shaped corner.

[0093] Among them, the elastomer 23 in this embodiment includes a spherical part 232. The outer peripheral cross-section of the spherical part 232 increases first and then decreases from top to bottom. Correspondingly, the second inner cavity 2411 is provided with a spherical cavity 24111 that is adapted to the shape and size of the spherical part 232, so as to ensure the stability of the connection between the elastomer 23 and the head 24 under the cooperation of the spherical part 232 and the spherical cavity 24111.

[0094] Preferably, a pushing plane 2321 is provided at the lower end of the spherical part 232 in this embodiment, and a butting plane 24112 parallel to and abutting against the pushing plane 2321 is provided in the second inner cavity 2411; and the pushing plane 2321 is a horizontal plane.

[0095] Therefore, under the action of the pushing plane 2321 and the butting plane 24112, the spherical part 232 is restricted from rotating to varying degrees in other directions except the vertical axis with respect to the spherical cavity 24111, ensuring the stability of the assembly of the elastomer 23 and the head 24. In addition, the rod body 22 usually applies a force downward, and this force is perpendicular to the pushing plane 2321, so that the applied force basically does not generate a deflecting component force that causes the elastomer 23 to rotate relative to the head 24, and thus a greater force can be applied downward to ensure that the head 24 stably fits the die surface to be ground and polished.

[0096] Preferably, a columnar part 233 is integrally formed at the upper end of the spherical part 232 in this embodiment, and a columnar cavity 24113 that is adapted to the shape and size of the columnar part 233 is provided in the second inner cavity 2411.

[0097] Therefore, under the cooperation of the columnar part 233 and the columnar cavity 24113, the spherical part 232 is restricted from rotating to varying degrees in other directions except the vertical axis with respect to the spherical cavity 24111, ensuring the stability of the assembly of the elastomer 23 and the head 24. In addition, the pushing plane 2321 is at the bottom and the columnar part 233 is at the top to jointly restrict the rotation of the spherical part 232 up and down.

[0098] The columnar part 233 in this embodiment is a cylinder. The cylindrical columnar part 233 makes the circumferential structure of the grinding head more uniform, the structure simpler, and the force more evenly distributed. In other embodiments, a polygonal prism can also be used.

[0099] In addition, the outer periphery of the spherical portion 232 in this embodiment is circumferentially provided with multiple clamping portions 234, and the second embedded cavity 2411 is provided with multiple clamping grooves 24114. The clamping portions 234 are clamped in the clamping grooves 24114 to achieve circumferential limitation of the elastic body 23 and the head 24.

[0100] Among them, the lower end of the rod body 22 in this embodiment is provided with an abutting end surface 222, and the abutting end surface 222 abuts against the elastic body 23, so that under the downward force of the rod body 22, part of the force acts on the elastic body 23 through the abutting end surface 222, and part of the force acts on the elastic body 23 through the connecting section 221, thereby increasing the contact area and making the elastic body 23 subject to force at multiple positions to prevent stress concentration on the elastic body 23.

[0101] In addition, if Figure 1 , Figure 2 As shown, a grinding assembly 8 is provided on the frame 1 in this embodiment, and the grinding assembly 8 includes a grinding motor 81 and a repair grinding head 82. The grinding motor 81 is fixedly installed on the frame 1 by means of bolts, and the repair grinding head 82 is installed on the output shaft of the grinding motor 81 so that the repair grinding head 82 is driven to rotate by the operation of the grinding motor 81, wherein a grinding surface 821 is provided on the side of the repair grinding head 82 away from the grinding motor 81 so that the grinding surface 821 contacts the grinding surface 2421 of the mold grinding head 2, so that the mold grinding head 2 that needs to be polished and repaired is polished and repaired along its grinding surface 2421 under five-axis control, and because the grinding assembly 8 is provided on the frame 1, that is, the position of the grinding surface 821 is known and unchanged, so that the parameters of the grinding surface 2421 of the repaired mold grinding head 2 are accurate and knowable, so that it is more accurate in the subsequent grinding and polishing of the mold.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A five-axis engraving and grinding machine for mold processing, characterized in that, Comprising: A frame (1) on which a workbench (11) is provided for placing the mold to be processed; A mold grinding head (2); A rotating device (21) for driving the mold grinding head (2) to rotate so as to grind or polish the mold on the workbench (11); A first sliding assembly (3) for driving the mold grinding head (2) to slide relative to the workbench (11) in the x direction; A second sliding assembly (4) for driving the mold grinding head (2) to slide relative to the workbench (11) in the y direction; A third sliding assembly (5) for driving the mold grinding head (2) to slide relative to the workbench (11) in the z direction; A first rotating assembly (6) for driving the mold grinding head (2) to rotate relative to the workbench (11), and the axis of rotation is arranged vertically; A second rotating assembly (7) for driving the mold grinding head (2) to rotate relative to the workbench (11), and the axis of rotation is arranged horizontally.

2. The five-axis engraving and milling machine for mold processing according to claim 1, wherein The mold grinding head (2) includes: a rod body (22) with a connecting section (221) provided at one end thereof; An elastic body (23) with a first inner cavity (231) provided at one end thereof, and the connecting section (221) is disposed in the first inner cavity (231); A head (24) provided with a mounting end (241) and a grinding end (242), the mounting end (241) is provided with a second inner cavity (2411), the elastic body (23) is placed in the second inner cavity (2411), and the connecting section (221) is partially or entirely located in the second inner cavity (2411).

3. The five-axis engraving and milling machine for mold processing according to claim 2, wherein: The surface of the grinding end (242) is provided with a grinding surface (2421) in an arc shape; or, The surface of the grinding end (242) is provided with a grinding surface (2421) in a cylindrical shape, the outer periphery of the mounting end (241) is cylindrical, and the diameter of the grinding surface (2421) is larger than the outer diameter of the mounting end (241).

4. The five-axis engraving and grinding machine for mold processing according to claim 2, wherein: The elastic body (23) includes a spherical portion (232), and the outer peripheral cross-section of the spherical portion (232) increases first and then decreases from the end close to the rod body (22) to the end far from the rod body (22).

5. The five-axis engraving and milling machine for mold processing according to claim 4, wherein: A pushing plane (2321) is provided at the end of the spherical portion (232) facing away from the rod body (22), and a butting plane (24112) parallel to and abutting against the pushing plane (2321) is provided in the second inner cavity (2411); the pushing plane (2321) is perpendicular to the axis of the rod body (22); and / or, A columnar portion (233) is provided at the end of the spherical portion (232) facing the ejector rod, and a columnar cavity (24113) adapted to the shape and size of the columnar portion (233) is provided in the second inner cavity (2411); and / or, A plurality of clamping portions (234) are circumferentially arranged along the outer periphery of the spherical portion (232). A plurality of clamping grooves (24114) are arranged in the second embedded cavity (2411). The clamping portions (234) are clamped in the clamping grooves (24114) to realize the circumferential limit of the elastic body (23) and the head (24).

6. The five-axis engraving and grinding machine for mold processing according to claim 1, wherein: The first sliding assembly (3) includes a first sliding member (31) and a first driving assembly (32). The first sliding member (31) is slidably arranged on the frame (1) along the x direction. The first driving assembly (32) is used to drive the first sliding member (31) to slide; The second sliding assembly (4) includes a second sliding member (41) and a second driving assembly (42). The second sliding member (41) is slidably arranged on the first sliding member (31) along the y direction. The second driving assembly (42) is used to drive the second sliding member (41) to slide; The third sliding assembly (5) includes a third sliding member (51) and a third driving assembly (52). The third sliding member (51) is slidably arranged on the second sliding member (41) along the z direction. The third driving assembly (52) is used to drive the third sliding member (51) to slide; The first rotating assembly (6) includes a first rotating member (61) and a fourth driving assembly (62). The first rotating member (61) is rotatably arranged on the third sliding member (51) with the vertical direction as the rotation axis. The fourth driving assembly (62) is used to drive the first rotating member (61) to rotate; The second rotating assembly (7) includes a second rotating member (71) and a fifth driving assembly (72). The second rotating member (71) is rotatably arranged on the first rotating member (61) with the horizontal direction as the rotation axis. The fifth driving assembly (72) is used to drive the second rotating member (71) to rotate.

7. The five-axis engraving and milling machine for mold processing according to claim 6, wherein: The first driving assembly (32) includes a first driving device, a first lead screw (322), a first ball nut (323), a first linear slide rail (324) and a first slide block (325). The first lead screw (322) is rotatably arranged on the frame (1). The first linear slide rail (324) is fixedly arranged on the frame (1). The length directions of the first lead screw (322) and the first linear slide rail (324) are along the x direction. The first driving device is used to drive the first lead screw (322) to rotate. The first ball nut (323) and the first slide block (325) are fixedly arranged on the first sliding member (31). The first ball nut (323) is in threaded engagement with the first lead screw (322). The first slide block (325) is in sliding engagement with the first linear slide rail (324); and / or, The second driving assembly (42) includes a second driving device, a second lead screw (422), a second ball nut (423), a second linear slide rail (424) and a second slide block (425). The second lead screw (422) is rotatably arranged on the first sliding member (31). The second linear slide rail (424) is fixedly arranged on the second sliding member (41), and the length directions of the second lead screw (422) and the second linear slide rail (424) are along the y direction. The second driving device is used to drive the second lead screw (422) to rotate. The second ball nut (423) and the second slide block (425) are fixedly arranged on the second sliding member (41), the second ball nut (423) is in threaded fit with the second lead screw (422), and the second slide block (425) is in sliding fit with the second linear slide rail (424); and / or, The third driving assembly (52) includes a third driving device, a third lead screw (522), a third ball nut (523), a third linear slide rail (524) and a third slide block (525). The third lead screw (522) is rotatably arranged on the second sliding member (41). The third linear slide rail (524) is fixedly arranged on the third sliding member (51), and the length directions of the third lead screw (522) and the third linear slide rail (524) are along the z direction. The third driving device is used to drive the third lead screw (522) to rotate. The third ball nut (523) is fixedly arranged on the third sliding member (51), the third slide block (525) is fixedly arranged on the second sliding member (41), the third ball nut (523) is in threaded fit with the third lead screw (522), and the third slide block (525) is in sliding fit with the third linear slide rail (524); and / or, The fourth driving assembly (62) includes a fourth driving device (621). The fourth driving device (621) is fixedly arranged on the third sliding member (51). The output end of the fourth driving device (621) faces downward and is connected to the first rotating member (61) so as to drive the first rotating member (61) to rotate under the operation of the fourth driving device (621); and / or, The fifth driving assembly (72) includes a fifth driving device (721). The fifth driving device (721) is fixedly arranged on the first rotating member (61). The output end of the fifth driving device (721) faces horizontally and is connected to the second rotating member (71) so as to drive the second rotating member (71) to rotate under the operation of the fifth driving device (721).

8. The five-axis engraving and grinding machine for mold processing according to claim 7, wherein: The number of the first driving assemblies (32) is two groups, and the two groups of the first driving assemblies (32) are respectively arranged at the two length ends of the second sliding member (41).

9. The five-axis engraving and grinding machine for mold processing according to claim 8, wherein: The fourth driving assembly (62) includes a fourth power-off brake, and the fourth power-off brake is used to brake the first rotating member (61); and / or, The fifth driving assembly (72) includes a fifth power-off brake (722), and the fifth power-off brake (722) is used to brake the second rotating member (71); and / or, At least one of the first driving device, the second driving device, the third driving device, the fourth driving device (621) and the fifth driving device (721) includes a harmonic reducer and / or a worm and worm gear reducer.

10. The five-axis engraving and grinding machine for mold processing according to any one of claims 1-9, characterized in that: A grinding assembly (8) is arranged on the frame (1). The grinding assembly (8) includes a grinding motor (81) and a repair grinding head (82). The grinding motor (81) is used to drive the repair grinding head (82) to rotate. The repair grinding head (82) is provided with a grinding surface (821) for grinding the outer surface of the die grinding head (2).

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