Grinding mechanism with force unloading structure

Abstract

The utility model provides a grinding mechanism with unloading structure, including main mounting rack, multi-axis drive module, grinding subassembly and unloading mechanism, multi-axis drive module includes Z-axis elevating module, grinding subassembly with Z-axis elevating module's motion end fixed connection, unloading mechanism is fixed on Z-axis elevating module, and the unloading mechanism is fixed on the Z-axis elevating module. The lower end of the force unloading mechanism is fixedly connected with the grinding assembly, and the force unloading mechanism can provide upward pulling force in the moving process of the grinding assembly. According to the multi-shaft numerical control grinding machine, the problems that in the prior art, due to the fact that a grinding electric main shaft needs to be driven to move in the multi-shaft direction, a multi-shaft driving module is large in load, the service life is short after long-time use, and the machining precision is low can be solved; and the load of the grinding assembly on the Z-axis lifting module is effectively reduced, the precision of the moving process can be effectively improved, and therefore the requirement for high grinding precision is met, and the competitiveness of enterprises is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision tool processing, and particularly relates to a grinding mechanism with a force unloading structure. Background Technique

[0002] For the processing of micro-precision tools, a multi-axis numerical control grinding machine is usually used to grind the tools into micro-precision tools of specified specifications. The tools are clamped by a fixture. During the grinding process, the multi-axis numerical control grinding machine and the fixture move relative to each other continuously to achieve accurate processing of the tools.

[0003] The multi-axis numerical control grinding machine includes a multi-axis drive module and a grinding electric main shaft. During the grinding process, the multi-axis drive module drives the grinding electric main shaft to move in multiple axis directions. Since the grinding electric main shaft is relatively heavy, the load on the multi-axis drive module is large during installation, and jitter is likely to occur during the processing. In addition, using the multi-axis drive module for a long time will also affect its service life due to driving a large weight for a long time, and loosening between components will affect the processing accuracy, which is not conducive to improving the competitiveness of enterprises. Content of the Utility Model

[0004] To solve the problems in the prior art, the utility model provides a grinding mechanism with a force unloading structure, which solves the problems in the prior art that in a multi-axis numerical control grinding machine, due to the need to drive the grinding electric main shaft to move in multiple axis directions, the load on the multi-axis drive module is large, and the service life of components is short and the processing accuracy is low after long-term use.

[0005] A grinding mechanism with a force unloading structure of the utility model includes a main mounting frame, a multi-axis drive module, a grinding component and a force unloading mechanism. The multi-axis drive module includes a Z-axis lifting module. The grinding component is fixedly connected to the moving end of the Z-axis lifting module. The Z-axis lifting module can drive the grinding component to move up and down. The force unloading mechanism is fixedly arranged on the Z-axis lifting module and is arranged above the grinding component. The lower end of the force unloading mechanism is fixedly connected to the grinding component, and the force unloading mechanism can provide an upward pulling force during the movement of the grinding component.

[0006] The utility model is further improved. The force unloading mechanism includes a force unloading mounting frame and a force unloading spring member. The upper end of the force unloading spring member is fixedly connected to the force unloading mounting frame, and the lower end of the force unloading spring member is fixedly connected to the grinding component.

[0007] The number of the force unloading spring members is two, and the two force unloading spring members can further increase the pulling force of the force unloading mechanism.

[0008] The utility model is further improved. The force unloading spring member is a constant force magnetic spring, and the constant force magnetic spring can ensure that the pulling force on the grinding component is a constant force.

[0009] The present utility model is further improved. The grinding assembly includes a swing driving device, a mounting bracket, and a grinding main body. The swing driving device is fixedly arranged on the mounting bracket. A driving hole is arranged on the mounting bracket and is matched with the moving end of the driving device. The moving end of the driving device passes through the driving hole and is fixedly connected to the grinding main body. The swing driving device can drive the grinding main body to rotate and swing.

[0010] The present utility model is further improved. The grinding main body includes a grinding electric main shaft and two grinding wheels. The two grinding wheels are arranged at intervals on the moving end of the grinding electric main shaft.

[0011] The present utility model is further improved. The multi-axis driving module further includes a Y-axis linear module. The Y-axis linear module includes a Y-axis driving motor, a Y-axis driving lead screw, and a Y-axis driving block. The moving end of the Y-axis driving motor is connected to the Y-axis driving lead screw. The Y-axis driving lead screw is in threaded connection with the Y-axis driving block. The Y-axis driving block is connected to the Z-axis lifting module. The Y-axis driving motor can drive the Z-axis lifting module to move linearly in the Y-axis direction.

[0012] The present utility model is further improved. The multi-axis driving module further includes an X-axis linear module. The X-axis linear module includes an X-axis driving motor, an X-axis driving lead screw, and an X-axis driving block. The moving end of the X-axis driving motor is connected to the X-axis driving lead screw. The X-axis driving lead screw is in threaded connection with the X-axis driving block. The X-axis driving block is connected to the Y-axis linear module. The X-axis driving motor can drive the Y-axis linear module to move linearly in the X-axis direction.

[0013] The present utility model is further improved. The Z-axis lifting module includes a Z-axis mounting frame, a Z-axis driving motor, a Z-axis driving lead screw, and a Z-axis driving block. The Z-axis driving motor is fixedly arranged on the Z-axis mounting frame. The moving end of the Z-axis driving motor is connected to the Z-axis driving lead screw. The Z-axis driving lead screw is in threaded connection with the Z-axis driving block. The Z-axis driving block is connected to the grinding assembly. The Z-axis driving motor can drive the grinding assembly to move up and down in the Z-axis direction.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides a grinding mechanism with a force unloading structure. By adopting this structure, it can effectively solve the problems in the prior art that in a multi-axis numerical control grinding machine, due to the need to drive the grinding electric main shaft to move in multiple axial directions, the load of the multi-axis driving module is relatively large, and the service life of components is short and the processing accuracy is low after long-term use. By using the product structure, the force unloading mechanism can provide an upward pulling force to the grinding assembly, effectively reducing the load pressure brought by the grinding assembly to the Z-axis lifting module, and can effectively improve the accuracy during the moving process, thus ensuring the high-precision requirements of grinding and being beneficial to improving the competitiveness of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the solutions in the present utility model or the prior art, the following will give a brief introduction to the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the grinding mechanism with a force-releasing structure;

[0017] Figure 2 It is a schematic diagram of the structure of a grinding machine equipped with the grinding mechanism with a force-releasing structure. Detailed implementation manners

[0018] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and not for describing a specific order.

[0019] When referring to "embodiments" in the present utility model, it means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present utility model. The appearance of this phrase at various positions in the description does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present utility model can be combined with other embodiments.

[0020] To enable those skilled in the art of this technology to better understand the solutions of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings.

[0021] As Figure 1 and Figure 2 shown, a grinding mechanism with a force-releasing structure of the present utility model includes a main mounting frame 1, a multi-axis drive module, a grinding assembly and a force-releasing mechanism. The multi-axis drive module includes a Z-axis lifting module 3, and the grinding assembly is fixedly connected to the moving end of the Z-axis lifting module 3.

[0022] The unloading mechanism is fixedly arranged on the Z-axis lifting module 3, and the unloading mechanism is arranged above the grinding assembly. The unloading mechanism includes an unloading mounting frame 21 and an unloading spring member. The upper end of the unloading spring member is fixedly connected to the unloading mounting frame, and the lower end of the unloading spring member is fixedly connected to the grinding assembly.

[0023] The number of the unloading spring members is two. By means of the two unloading spring members, the pulling force of the unloading mechanism can be further increased, the unloading force is greater, and the pressure brought by the grinding assembly to the Z-axis lifting module 3 is further reduced.

[0024] The unloading spring member is a constant force magnetic spring 22. The upper end of the constant force magnetic spring 22 is fixedly arranged on the unloading mounting frame 21, and the lower end of the constant force magnetic spring 22 is fixedly connected to the grinding assembly.

[0025] Through the arrangement of the Z-axis lifting module 3, the lifting movement of the grinding assembly can be effectively driven.

[0026] Through the arrangement of the constant force magnetic spring 22, a constant upward pulling force can be provided during the movement of the grinding assembly, so as to achieve effective unloading, effectively reduce the load of the Z-axis lifting module 3 during movement, and avoid affecting the service life of components due to the Z-axis lifting module 3 lifting under high load for a long time.

[0027] Due to the factor of constant force, the arrangement of the constant force magnetic spring 22 makes the lifting process of the grinding assembly more stable, and can effectively ensure the stability of the grinding assembly during the processing, with higher lifting precision and improved product precision.

[0028] A plurality of magnets are arranged in the constant force magnetic spring 22, and a constant force effect is generated through the magnetic principle of positive and negative poles.

[0029] Obviously, the unloading spring member is a constant force magnetic spring to achieve the effect of balanced unloading of the driving module. Other structural designs can also be used for replacement. For example, the unloading spring member can be a nitrogen spring or a round wire helical spring, etc., and the same effect of the above scheme can be achieved.

[0030] The grinding assembly includes a swing driving device 4, a mounting bracket 5 and a grinding main body. The swing driving device 4 is fixedly arranged on the mounting bracket 5. A driving hole matching with the moving end of the driving device is arranged on the mounting bracket 5, and the moving end of the driving device passes through the driving hole and is fixedly connected to the grinding main body.

[0031] Through the arrangement of the swing driving device 4, the grinding main body can be driven to rotate and swing, improving the flexibility of grinding of the grinding assembly.

[0032] Two groups of constant force magnetic springs 22 are symmetrically arranged on both sides of the swing driving device 4, and the lower ends of the two groups of constant force magnetic springs 22 are connected to the mounting bracket 5.

[0033] By symmetrically arranging two groups of constant-force magnetic springs 22, it is possible to further unload the force while improving the stability of the grinding assembly.

[0034] The grinding main machine includes a grinding electric main shaft 6 and two grinding wheels 7, and the two grinding wheels 7 are arranged at intervals at the moving end of the grinding electric main shaft 6.

[0035] By arranging two grinding wheels 7, grinding of at least two processes can be achieved.

[0036] The grinding mechanism with a force-unloading structure further includes a Y-axis linear module 8. The Y-axis linear module 8 includes a Y-axis driving motor, a Y-axis driving lead screw, and a Y-axis driving block. The moving end of the Y-axis driving motor is connected to the Y-axis driving lead screw, the Y-axis driving lead screw is threadedly connected to the Y-axis driving block, and the Y-axis driving block is connected to the Z-axis lifting module 3.

[0037] By arranging the Y-axis linear module 8, the Y-axis driving motor can drive the Z-axis lifting module 3 to move linearly in the Y-axis direction, improving the flexibility of grinding of the grinding assembly.

[0038] The grinding mechanism with a force-unloading structure further includes an X-axis linear module 9. The X-axis linear module 9 includes an X-axis driving motor, an X-axis driving lead screw, and an X-axis driving block. The moving end of the X-axis driving motor is connected to the X-axis driving lead screw, the X-axis driving lead screw is threadedly connected to the X-axis driving block, and the X-axis driving block is connected to the Y-axis linear module 8.

[0039] By arranging the X-axis linear module 9, the X-axis driving motor can drive the Y-axis linear module 8 to move linearly in the X-axis direction, improving the flexibility of grinding of the grinding assembly.

[0040] The Z-axis lifting module 3 includes a Z-axis mounting frame, a Z-axis driving motor, a Z-axis driving lead screw, and a Z-axis driving block. The force-unloading mounting frame 21 is fixedly arranged on the Z-axis mounting frame. The moving end of the Z-axis driving motor is connected to the Z-axis driving lead screw, the Z-axis driving lead screw is threadedly connected to the Z-axis driving block, and the Z-axis driving block is connected to the grinding assembly.

[0041] By arranging the Z-axis lifting module 3, the Z-axis driving motor can drive the grinding assembly to move up and down in the Z-axis direction, improving the flexibility of grinding of the grinding assembly.

[0042] As can be seen from the above, the beneficial effects of the present utility model are as follows: By adopting its mechanism, it can effectively solve the problems in the prior art of multi-axis CNC grinding machines. Since it is necessary to drive the grinding electric spindle 6 to move in multiple-axis directions, the load of the multi-axis drive module is relatively large, and the service life of components is prone to be short and the machining accuracy is low after long-term use. By using the structure of this product, the force-relieving mechanism can provide an upward pulling force to the grinding assembly, effectively reducing the load pressure brought by the grinding assembly to the Z-axis lifting module 3, and can effectively improve the accuracy during the movement process, thereby ensuring the high-precision requirements of grinding and being beneficial to improving the competitiveness of enterprises.

[0043] The specific implementation manners described above are the preferred implementation manners of the present utility model, and do not limit the specific implementation scope of the present utility model thereby. The scope of the present utility model includes but is not limited to this specific implementation manner. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A grinding mechanism with a force unloading structure, characterized in that: It includes a main mounting frame, a multi-axis driving module, a grinding assembly and a force unloading mechanism. The multi-axis driving module includes a Z-axis lifting module. The grinding assembly is fixedly connected to the moving end of the Z-axis lifting module. The Z-axis lifting module can drive the grinding assembly to move up and down. The force unloading mechanism is fixedly arranged on the Z-axis lifting module, and the force unloading mechanism is arranged above the grinding assembly. The lower end of the force unloading mechanism is fixedly connected to the grinding assembly. The force unloading mechanism can provide an upward pulling force during the movement of the grinding assembly.

2. The grinding mechanism with a force-releasing structure according to claim 1, characterized in that: The unloading mechanism comprises an unloading mounting frame and an unloading spring component. The upper end of the unloading spring component is fixedly connected to the unloading mounting frame, and the lower end of the unloading spring component is fixedly connected to the grinding assembly.

3. The grinding mechanism with a force-releasing structure according to claim 2, characterized in that: The number of the unloading spring components is two, and the two unloading spring components can further increase the pulling force of the unloading mechanism.

4. The grinding mechanism with a force-releasing structure according to claim 2, characterized in that: The unloading spring component is a constant force magnetic spring, and the constant force magnetic spring can ensure that the pulling force on the grinding component is constant.

5. The grinding mechanism with a force-releasing structure according to claim 1, characterized in that: The grinding assembly includes a swing drive device, a mounting bracket and a grinding main unit. The swing drive device is fixedly arranged on the mounting bracket. The mounting bracket is provided with a drive hole that cooperates with the moving end of the drive device. The moving end of the drive device passes through the drive hole and is fixedly connected to the grinding main unit. The swing drive device can drive the grinding main unit to rotate and swing.

6. The grinding mechanism with a force-releasing structure according to claim 5, characterized in that: The grinding main machine comprises a grinding electric spindle and two grinding wheels, and the two grinding wheels are arranged at intervals on the moving end of the grinding electric spindle.

7. The grinding mechanism with a force-releasing structure according to claim 1, characterized in that: The multi-axis driving module also includes a Y-axis linear module, a moving end of the Y-axis linear module is connected to the Z-axis lifting module, and the Y-axis linear module can drive the Z-axis lifting module to move linearly in the Y-axis direction.

8. The grinding mechanism with a force-releasing structure according to claim 7, characterized in that: The multi-axis driving module also includes an X-axis linear module, a moving end of the X-axis linear module is connected to the Y-axis linear module, and the X-axis linear module can drive the Y-axis linear module to move linearly in the X-axis direction.

9. The grinding mechanism with a force unloading structure according to any one of claims 1 to 6, characterized in that: The Z-axis lifting module includes a Z-axis mounting frame, a Z-axis driving motor, a Z-axis driving screw and a Z-axis driving block. The Z-axis driving motor is fixedly arranged on the Z-axis mounting frame, the moving end of the Z-axis driving motor is connected to the Z-axis driving screw, the Z-axis driving screw is threadedly connected to the Z-axis driving block, the Z-axis driving block is connected to the grinding assembly, and the Z-axis driving motor can drive the grinding assembly to move up and down in the Z-axis direction.

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