A high-precision, high-efficiency grinding mechanism

Abstract

The utility model discloses a high-precision and high-efficiency grinding mechanism, comprising a spindle assembly arranged in a spindle box, one end of the spindle assembly is connected to a spindle motor, a grinding wheel is installed at the other end of the spindle assembly, a grinding wheel fixing flange is provided on the side of the grinding wheel facing the spindle assembly, and a grinding wheel movable flange is provided on the side of the grinding wheel away from the spindle assembly; a grinding wheel static balance group is installed on the grinding wheel fixing flange and the grinding wheel movable flange respectively. The utility model not only has the advantages of high processing accuracy, good processing effect and high yield rate, but also can install grinding wheels with a width of more than 100mm to achieve its purpose of strong versatility, and effectively solves the problems that the grinding machines currently on the market cannot install grinding wheels with a width of more than 100mm due to insufficient rigidity of the spindle and the grinding wheels lack the structure of the grinding wheel static balance group, and the grinding wheels will vibrate during high-speed rotation, resulting in poor precision of the grinding workpiece, poor finish of the grinding workpiece and low yield rate of the grinding workpiece.

Description

Technical Field

[0001] The utility model relates to the field of grinding equipment, in particular to a high-precision and high-efficiency grinding mechanism. Background Art

[0002] The grinding machines currently on the market can only install grinding wheels with a width of 50-100mm due to the insufficient rigidity of the grinding spindle structure and the lack of a grinding wheel static balance group structure for static balance adjustment of the grinding wheel. It is impossible to install grinding wheels with a wider range (such as a width of more than 100mm). When a grinding wheel with a wider range (such as a width of more than 100mm) is installed, it will become unstable in operation. Because the grinding wheel needs to rotate at high speed when the grinding machine is grinding; if the grinding wheel lacks a balancing structure and is not statically balanced before installation, it will vibrate during high-speed rotation, which will not only affect the stability of the grinding machine operation, but also have an adverse effect on the grinding accuracy of the grinding machine and the finish of the ground workpiece, resulting in poor grinding finish and low yield of the workpiece, thus affecting the quality of the product.

[0003] In addition, since the structure of the grinding spindle in the grinders currently on the market can only install grinding wheels with a width of 50-100mm, the grinding surface range between the spindle and the workpiece is small, and it is only suitable for grinding workpieces with smaller processing surfaces. It cannot meet the various grinding processing requirements of workpieces of different specifications. At the same time, it cannot meet the needs of rough processing, semi-finishing and finishing on one device according to the different grinding requirements of different workpieces, resulting in low processing efficiency, poor processing accuracy, large usage limitations and poor versatility. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-precision and high-efficiency grinding mechanism.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a high-precision and high-efficiency grinding mechanism, including a Z-axis screw transmission module, a spindle box and a spindle motor are respectively arranged on the front side of the Z-axis screw transmission module, a spindle assembly is arranged in the spindle box, one end of the spindle assembly is connected to the spindle motor and is provided with a synchronous belt assembly, a grinding wheel is installed on the other end of the spindle assembly, a grinding wheel fixing flange is arranged on the side of the grinding wheel facing the spindle assembly, and a grinding wheel movable flange is arranged on the side of the grinding wheel away from the spindle assembly; the spindle assembly can be installed with grinding wheels of different specifications by adjusting the distance between the grinding wheel fixing flange and the grinding wheel movable flange; the grinding wheel fixing flange and the grinding wheel movable flange are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel to ensure high precision of the later processing of the grinding wheel. Grinding wheels of different specifications include grinding wheels with a width of less than 100 mm and grinding wheels with a width of more than 100 mm.

[0006] Each grinding wheel static balance group comprises adjustment block installation grooves respectively arranged on the sides of the grinding wheel fixed flange and the grinding wheel movable flange, and zero or more balance adjustment blocks are installed in each adjustment block installation groove.

[0007] A high-precision and high-efficiency grinding mechanism includes a Z-axis screw drive module, a spindle box and a spindle motor are respectively arranged on the front side of the Z-axis screw drive module, a spindle assembly is arranged in the spindle box, one end of the spindle assembly is connected to the spindle motor through a coupling, a grinding wheel is installed on the other end of the spindle assembly, a grinding wheel fixing flange is arranged on the side of the grinding wheel facing the spindle assembly, and a grinding wheel movable flange is arranged on the side of the grinding wheel away from the spindle assembly; the spindle assembly can be installed with grinding wheels of different specifications by adjusting the distance between the grinding wheel fixing flange and the grinding wheel movable flange; the grinding wheel fixing flange and the grinding wheel movable flange are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel to ensure high precision of the later processing of the grinding wheel. Grinding wheels of different specifications include grinding wheels with a width of less than 100 mm and grinding wheels with a width of more than 100 mm.

[0008] Each grinding wheel static balance group comprises adjustment block installation grooves respectively arranged on the sides of the grinding wheel fixed flange and the grinding wheel movable flange, and zero or more balance adjustment blocks are installed in each adjustment block installation groove.

[0009] By adopting the above technical solution, a grinding wheel static balance group for adjusting the static balance of the grinding wheel is respectively provided on the grinding wheel fixed flange and the grinding wheel movable flange in the grinding wheel. If the grinding wheels of different widths are unbalanced before being installed on the end of the spindle assembly (i.e., the end of the spindle in the spindle assembly), the static balance of the grinding wheels of different specifications can be adjusted through the grinding wheel static balance group, so that the grinding wheels of different widths can always maintain a well-balanced state as a whole. After the grinding wheel is installed on the end of the spindle assembly, the spindle motor can drive the spindle assembly to rotate synchronously when it rotates, and the spindle assembly can drive the grinding wheel to rotate when it rotates. When the grinding wheel rotates at high speed under the drive of the spindle motor, the grinding wheel provided with the grinding wheel static balance group structure will not vibrate even if it rotates at high speed. It can ensure the smooth operation of the grinding wheel, and has the advantages of high grinding accuracy and good grinding effect on the workpiece. The surface finish of the workpiece ground by it is high.

[0010] Preferably, each adjustment block installation groove is arranged in an annular shape. When more than two balance adjustment blocks are installed, the more than two balance adjustment blocks can be evenly installed in the adjustment block installation groove at unequal intervals or equal intervals.

[0011] By adopting the above technical solution, when the grinding wheel is unbalanced, the balancing adjustment block can be installed at any position in the adjustment block mounting groove on the grinding wheel fixed flange and the grinding wheel movable flange, so that each position in the grinding wheel can ensure the overall static balance after the balancing adjustment block is installed according to the need for balancing.

[0012] Preferably, the spindle assembly includes a spindle, a spindle sleeve is mounted on the outer periphery of the spindle, one or more angular contact bearings are installed on the spindle, and the spindle sleeve wraps the one or more angular contact bearings tightly on the spindle; bearing covers are respectively provided at both ends of the spindle for pressing and limiting the ends of the one or more angular contact bearings after installation.

[0013] By adopting the above technical solution, the spindle sleeve can not only protect the spindle and the angular contact bearing, but also fix more than one angular contact bearing on the spindle to ensure that the angular contact bearing is firmly installed; and the design of the angular contact bearing can improve the rigidity of the spindle assembly.

[0014] Preferably, when more than two angular contact bearings are installed on the main shaft, a bearing spacer is provided between two adjacent angular contact bearings.

[0015] By adopting the above technical solution, the design of the bearing spacer can ensure that the angular contact bearing is installed firmly and tightly, thereby improving the overall toughness and running stability of the spindle assembly.

[0016] Preferably, the outer diameter of the spindle assembly is set to be greater than or equal to 180 mm.

[0017] By adopting the above technical solution, the outer diameter of the spindle assembly is increased to more than 180 mm. This design can greatly enhance the overall rigidity of the spindle assembly, making it suitable for installing a wider range of grinding wheels.

[0018] As preferably, the grinding wheel movable flange is fixedly mounted on one end of the main shaft assembly by a locking nut. Specifically, the grinding wheel movable flange is fixedly mounted on one end of the main shaft in the main shaft assembly by a locking nut.

[0019] Preferably, each balance adjustment block is fixedly installed through a screw and an adjustment block mounting slot.

[0020] Preferably, the spindle assembly can not only install a grinding wheel with a width of less than 100 mm through the grinding wheel static balance group, but also install a grinding wheel with a width of more than 100 mm. Specifically, the spindle in the spindle assembly can not only install a grinding wheel with a width of less than 100 mm through the grinding wheel static balance group, but also install a grinding wheel with a width of more than 100 mm.

[0021] Preferably, the spindle assembly can be installed with grinding wheels of different widths such as 50mm, 80mm, 100mm, 125mm or 150mm through a grinding wheel static balancing group. Specifically, the spindle in the spindle assembly can be installed with grinding wheels of different widths such as 50mm, 80mm, 100mm, 125mm or 150mm through a grinding wheel static balancing group.

[0022] Preferably, a control system is provided for signal control with the Z-axis screw drive module and the spindle motor and other components, and the control system can adopt a CNC control system or a CNC numerical control machining center, but is not limited thereto. The CNC control system is a commonly used control system for milling and grinding equipment, and its specific composition structure and working principle are common knowledge, and will not be explained in detail here.

[0023] It should be noted that the Z-axis screw drive module is a linear module, and the specific structure and working principle of the linear module are common knowledge and will not be explained in detail here. The synchronous belt assembly includes two synchronous wheels and a belt connecting the two synchronous wheels, one of which is installed on the output shaft of the spindle motor and the other is installed on one end of the spindle. The grinding wheel fixed flange and the grinding wheel movable flange are both functional descriptions of the flange. The spindle motor, the adjustment block mounting groove, the balance adjustment block and the spindle sleeve are functional descriptions of the motor, the mounting groove, the adjustment block and the sleeve respectively.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows: by increasing the outer diameter of the spindle assembly to more than 180 mm and installing more than one angular contact bearing on the spindle in the spindle assembly, this design can greatly improve the overall rigidity of the spindle assembly, so that it can not only install a grinding wheel with a width of less than 100 mm, but also a grinding wheel with a width of more than 100 mm. At the same time, by providing a grinding wheel static balance group on both the grinding wheel fixed flange and the grinding wheel movable flange, it is possible to install the balance adjustment block at any position of the adjustment block mounting slot in the grinding wheel static balance group according to the different widths of the grinding wheel, so as to ensure good static balance of grinding wheels of different widths. Therefore, the spindle in the spindle assembly can not only be installed with grinding wheels of a wider range (such as a width of 100-150mm), but also the grinding wheels of a wider range (above 100mm in width) can maintain stable operation during high-speed rotation to avoid vibration of the grinding wheel. The workpiece ground by using it has the advantages of high grinding precision, good grinding effect, good grinding surface finish and high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0026] Figure 1 It is a stereoscopic diagram of Example 1 of a high-precision and high-efficiency grinding mechanism of the utility model.

[0027] Figure 2 It is a cross-sectional structural stereogram of Example 1 of a high-precision and high-efficiency grinding mechanism of the utility model.

[0028] Figure 3 It is a cross-sectional stereoscopic view of a grinding wheel of a high-precision and high-efficiency grinding mechanism of the utility model.

[0029] Figure 4 The utility model is a front view of a grinding wheel of a high-precision and high-efficiency grinding mechanism.

[0030] Figure 5 It is a stereoscopic diagram of Example 2 of a high-precision and high-efficiency grinding mechanism of the utility model.

[0031] Figure 6 It is a cross-sectional stereoscopic view of Example 2 of a high-precision and high-efficiency grinding mechanism of the utility model. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Example 1

[0034] Reference Figures 1 to 4 As shown, a high-precision and high-efficiency grinding mechanism of the utility model comprises a Z-axis screw drive module 1, a spindle box 2 and a spindle motor 3 are respectively arranged on the front side of the Z-axis screw drive module 1, a spindle assembly 4 is arranged in the spindle box 2, one end of the spindle assembly 4 is connected to the spindle motor 3 and is provided with a synchronous belt assembly 5, a grinding wheel 6 is installed on the other end of the spindle assembly 4, a grinding wheel fixing flange 7 is arranged on the side of the grinding wheel 6 facing the spindle assembly 4, and a grinding wheel movable flange 8 is arranged on the side of the grinding wheel 6 away from the spindle assembly 4; the spindle assembly 4 can install grinding wheels 6 of different specifications by adjusting the distance between the grinding wheel fixing flange 7 and the grinding wheel movable flange 8; the grinding wheel fixing flange 7 and the grinding wheel movable flange 8 are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel 6 to ensure that the grinding wheel 6 has high precision in the later processing.

[0035] In one embodiment, each grinding wheel static balancing group includes adjustment block mounting grooves 91 respectively arranged on the sides of the grinding wheel fixed flange 7 and the grinding wheel movable flange 8, and zero or more balance adjustment blocks 92 are installed in each adjustment block mounting groove 91.

[0036] In one embodiment, each adjustment block installation slot 91 is arranged in a ring shape. When more than two balance adjustment blocks 92 are installed, the more than two balance adjustment blocks 92 can be evenly installed in the adjustment block installation slot 91 at unequal intervals or equal intervals.

[0037] In one embodiment, the spindle assembly 4 includes a spindle 41 , a spindle sleeve 42 is sleeved on the outer periphery of the spindle 41 , one or more angular contact bearings 43 are installed on the spindle 41 , and bearing glands 44 are respectively provided at both ends of the spindle 41 .

[0038] In one embodiment, when more than two angular contact bearings 43 are installed on the main shaft 41 , a bearing spacer 45 is disposed between two adjacent angular contact bearings 43 .

[0039] In one embodiment, the outer diameter of the spindle assembly 4 is set to be greater than 180 mm, such as 180 mm, 190 mm, and 200 mm.

[0040] In one embodiment, the grinding wheel movable flange 8 is fixedly mounted on one end of the main shaft 41 by a locking nut 10 .

[0041] In one embodiment, each balance adjustment block 92 is fixedly installed with a screw and an adjustment block installation slot 91 .

[0042] In one embodiment, the spindle assembly 4 can not only install a grinding wheel 6 with a width of less than 100 mm, but also install a grinding wheel with a width of more than 100 mm through the grinding wheel static balance group.

[0043] In one embodiment, the spindle assembly 4 can be installed with a grinding wheel 6 having different widths, such as 50 mm, 80 mm, 100 mm, 125 mm or 150 mm, by means of a grinding wheel static balancing group. Example 2

[0044] Reference Figures 3 to 6 As shown, a high-precision and high-efficiency grinding mechanism of the utility model comprises a Z-axis screw transmission module 1, a spindle box 2 and a spindle motor 3 are respectively arranged on the front side of the Z-axis screw transmission module 1, a spindle assembly 4 is arranged in the spindle box 2, one end of the spindle assembly 4 is connected to the spindle motor 3 through a coupling 11, a grinding wheel 6 is installed on the other end of the spindle assembly 4, a grinding wheel fixing flange 7 is arranged on the side of the grinding wheel 6 facing the spindle assembly 4, and a grinding wheel movable flange 8 is arranged on the side of the grinding wheel 6 away from the spindle assembly 4; the spindle assembly 4 can install grinding wheels 6 of different specifications by adjusting the distance between the grinding wheel fixing flange 7 and the grinding wheel movable flange 8; the grinding wheel fixing flange 7 and the grinding wheel movable flange 8 are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel 6 to ensure that the grinding wheel 6 has high precision in the later processing.

[0045] In one embodiment, each grinding wheel static balancing group includes adjustment block mounting grooves 91 respectively arranged on the sides of the grinding wheel fixed flange 7 and the grinding wheel movable flange 8, and zero or more balance adjustment blocks 92 are installed in each adjustment block mounting groove 91.

[0046] In one embodiment, each grinding wheel static balancing group includes adjustment block mounting grooves 91 respectively arranged on the sides of the grinding wheel fixed flange 7 and the grinding wheel movable flange 8, and zero or more balance adjustment blocks 92 are installed in each adjustment block mounting groove 91.

[0047] In one embodiment, each adjustment block installation slot 91 is arranged in a ring shape. When more than two balance adjustment blocks 92 are installed, the more than two balance adjustment blocks 92 can be evenly installed in the adjustment block installation slot 91 at unequal intervals or equal intervals.

[0048] In one embodiment, the spindle assembly 4 includes a spindle 41 , a spindle sleeve 42 is sleeved on the outer periphery of the spindle 41 , one or more angular contact bearings 43 are installed on the spindle 41 , and bearing glands 44 are respectively provided at both ends of the spindle 41 .

[0049] In one embodiment, when more than two angular contact bearings 43 are installed on the main shaft 41 , a bearing spacer 45 is disposed between two adjacent angular contact bearings 43 .

[0050] In one embodiment, the outer diameter of the spindle assembly 4 is set to be greater than 180 mm, such as 180 mm, 190 mm, and 200 mm.

[0051] In one embodiment, the grinding wheel movable flange 8 is fixedly mounted on one end of the spindle assembly 4 by a locking nut 10 .

[0052] In one embodiment, each balance adjustment block 92 is fixedly installed with a screw and an adjustment block installation slot 91 .

[0053] In one embodiment, the spindle assembly 4 can not only install a grinding wheel 6 with a width of less than 100 mm, but also install a grinding wheel with a width of more than 100 mm through the grinding wheel static balance group.

[0054] In one embodiment, the spindle assembly 4 can be installed with a grinding wheel 6 having different widths, such as 50 mm, 80 mm, 100 mm, 125 mm or 150 mm, by means of a grinding wheel static balancing group.

[0055] In any embodiment, before the grinding wheel 6 is installed on the end of the spindle 41 in the spindle assembly 4, a balancing stand for balancing the grinding wheel 6 is used and a level gauge is used to perform horizontal balance adjustment. After the balancing stand reaches balance, the grinding wheel 6 is placed on the balancing stand to test the static balance of the grinding wheel 6, and a balancing adjustment block 92 is installed in the adjustment block mounting groove 91 in the static balance group of the grinding wheel to improve the overall balance of the grinding wheel 6. The method of using a balancing stand to test the static balance of the grinding wheel 6 is common knowledge and will not be explained in detail here.

[0056] In any embodiment, the method of using the high-precision and high-efficiency grinding mechanism is as follows: a grinding wheel fixing flange 7 is provided on the side of the grinding wheel 6 facing the spindle assembly 4 and a grinding wheel movable flange 8 is provided on the side of the grinding wheel 6 away from the spindle assembly 4. The grinding wheel 6 is first assembled with the grinding wheel fixing flange 7 and then assembled with the grinding wheel movable flange 8. The grinding wheel movable flange 8 fixes the grinding wheel 6 on one end of the spindle 41 in the spindle assembly 4 through a locking nut 10. Since the spindle motor 3 can drive the spindle 41 to rotate synchronously through the synchronous belt assembly 5 or the coupling 11 when the spindle motor 3 rotates, the spindle 41 can drive the grinding wheel 6 installed on one end thereof to rotate synchronously when the spindle 41 rotates, and the grinding wheel 6 can grind the workpiece in contact with it when it rotates.

[0057] Since the grinding wheel 6 needs to rotate at high speed when grinding the workpiece, in order to enable the spindle 41 to be installed with a grinding wheel 6 wider than the traditional width of 50-100mm (such as a grinding wheel 6 with a width of more than 100mm) according to the processing needs of different workpieces, and to ensure that the end of the spindle 41 can still work with high precision after installing a grinding wheel 6 with a width of more than 100mm, the outer diameter of the spindle assembly 4 is increased to more than 180mm and more than one angular contact bearing 43 is installed on the spindle 41. This design can greatly enhance the overall rigidity of the spindle assembly 4, so that it can not only install a grinding wheel 6 with a width of less than 100mm, but also a grinding wheel 6 with a width of more than 100mm. At the same time, by providing a grinding wheel static balance group in the grinding wheel fixed flange 7 and the grinding wheel movable flange 8 respectively, the grinding wheel 6 of different widths can be installed in any position of the adjustment block installation groove 91 in the grinding wheel static balance group in order to achieve a static balance state. When the grinding wheel 6 reaches static balance, the grinding wheel 6 is installed on the end of the spindle 41 in the spindle assembly 4. The structural design of the grinding wheel static balance group enables the grinding wheel 6 to maintain good balance when running at high speed, so as to achieve smooth grinding of the workpiece. The surface finish of the workpiece ground by it is high. The design of the above structure not only makes it have the advantages of high processing accuracy, good processing effect and high yield rate, but also realizes that a wider range of grinding wheels 6 can be installed (such as 50mm, 80mm, 100mm, 125mm or 150mm wide... ...grinding wheel 6), so that it can meet the grinding needs of different workpieces on one device, so as to achieve the purpose of strong versatility, and effectively solve the problems that the grinding machines currently on the market can only install grinding wheels with a width of less than 100 mm due to insufficient rigidity of the grinding spindle and the grinding wheel 6 lacks the structure of a grinding wheel static balance group, and when the grinding wheel 6 with a width of more than 100 mm is installed, it will vibrate during high-speed rotation, resulting in poor precision of the ground workpiece, poor finish of the ground workpiece and low yield rate of the ground workpiece.

[0058] The above embodiment is only an example of the present invention and is not intended to limit the implementation and scope of rights of the present invention. Any technical solution that is identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision and high-efficiency grinding mechanism, comprising a Z-axis screw drive module, a spindle box and a spindle motor are respectively arranged on the front side of the Z-axis screw drive module, characterized in that: A spindle assembly is arranged in the spindle box, one end of the spindle assembly is connected to the spindle motor and is provided with a synchronous belt assembly, a grinding wheel is installed at the other end of the spindle assembly, a grinding wheel fixing flange is arranged on the side of the grinding wheel facing the spindle assembly, and a grinding wheel movable flange is arranged on the side of the grinding wheel away from the spindle assembly; the spindle assembly can be installed with grinding wheels of different specifications by adjusting the distance between the grinding wheel fixing flange and the grinding wheel movable flange; the grinding wheel fixing flange and the grinding wheel movable flange are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel to ensure high precision of the grinding wheel in the later processing; Each grinding wheel static balance group comprises adjustment block installation grooves respectively arranged on the sides of the grinding wheel fixed flange and the grinding wheel movable flange, and zero or more balance adjustment blocks are installed in each adjustment block installation groove.

2. A high-precision, high-efficiency grinding mechanism, comprising a Z-axis screw drive module, a spindle box and a spindle motor are respectively arranged on the front side of the Z-axis screw drive module, characterized in that: A spindle assembly is arranged in the spindle box, one end of the spindle assembly is connected to the spindle motor through a coupling, a grinding wheel is installed at the other end of the spindle assembly, a grinding wheel fixing flange is arranged on the side of the grinding wheel facing the spindle assembly, and a grinding wheel movable flange is arranged on the side of the grinding wheel away from the spindle assembly; the spindle assembly can be installed with grinding wheels of different specifications by adjusting the distance between the grinding wheel fixing flange and the grinding wheel movable flange; the grinding wheel fixing flange and the grinding wheel movable flange are respectively provided with a grinding wheel static balance group for adjusting the static balance of the grinding wheel to ensure high precision of the grinding wheel in the later processing; Each grinding wheel static balance group comprises adjustment block installation grooves respectively arranged on the sides of the grinding wheel fixed flange and the grinding wheel movable flange, and zero or more balance adjustment blocks are installed in each adjustment block installation groove.

3. A high-precision, high-efficiency grinding mechanism according to any one of claims 1 and 2, characterized in that: Each adjustment block installation groove is arranged in a ring shape. When more than two balance adjustment blocks are installed, the more than two balance adjustment blocks can be evenly installed in the adjustment block installation grooves at unequal intervals or equal intervals.

4. A high-precision, high-efficiency grinding mechanism according to any one of claims 1 and 2, characterized in that: The spindle assembly comprises a spindle, the outer periphery of which is provided with a spindle sleeve, one or more angular contact bearings are installed on the spindle, and bearing glands are respectively arranged at both ends of the spindle.

5. A high-precision, high-efficiency grinding mechanism according to claim 4, characterized in that: When more than two angular contact bearings are installed on the main shaft, a bearing spacer is provided between two adjacent angular contact bearings.

6. A high-precision, high-efficiency grinding mechanism according to any one of claims 1 and 2, characterized in that: The outer diameter of the spindle assembly is set to be greater than or equal to 180 mm.

7. A high-precision, high-efficiency grinding mechanism according to any one of claims 1 and 2, characterized in that: The grinding wheel movable flange is fixedly installed on one end of the spindle assembly through a locking nut; each balance adjustment block is fixedly installed through a screw and an adjustment block installation groove.

8. A high-precision, high-efficiency grinding mechanism according to any one of claims 1 and 2, characterized in that: The spindle assembly can not only install grinding wheels with a width of less than 100 mm through the grinding wheel static balance group, but also install grinding wheels with a width of more than 100 mm.

9. A high-precision, high-efficiency grinding mechanism according to claim 8, characterized in that: The spindle assembly can be equipped with grinding wheels with a width of 50mm, 80mm, 100mm, 125mm or 150mm through the grinding wheel static balancing group.

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