A clamping device and a polishing apparatus

Abstract

The utility model discloses a clamping device and grinding equipment, wherein, clamping device includes datum table and the installation spare of being located datum table one side, datum table is provided with datum plane, and datum plane is used for respectively abutting with the non -machining end of multiple shaft parts, installation spare is provided with multiple installation slot and multiple screw hole, and the threaded hole is communicated with corresponding installation slot, multiple installation slots are used for accommodating the part of shaft parts respectively, and the end of installation slot away from threaded hole is provided with tapering cavity, and the wall of forming tapering cavity is used for abutting with corresponding shaft parts, and installation spare is connected with threaded fastener through threaded hole, and one end of threaded fastener is inserted or protrudes corresponding installation slot to fix or release the shaft parts in corresponding installation slot. The utility model discloses a clamping device and grinding equipment for realizing the synchronous clamping of multiple shaft parts, and multiple shaft parts can be processed synchronously, improve processing efficiency and ensure the uniform machining precision of multiple shaft parts.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a clamping device and a grinding device. Background Technology

[0002] When machining shaft-type parts, it is usually necessary to use a clamping fixture to fix the shaft-type parts in place before machining. Shaft-type parts are generally required to be processed in batches. When machining multiple shaft-type parts, one shaft-type part is first mounted on the clamping fixture and machined. Then, another shaft-type part is clamped and fixed in place, and machining is performed again. This process is repeated multiple times to achieve the machining operation of multiple shaft-type parts.

[0003] Installing and machining multiple shaft parts separately requires multiple installation and machining operations, making the process cumbersome and time-consuming. Furthermore, during machining processes such as cutting and grinding, the cutting tool or grinding head is first set before machining the shaft parts. However, there are inherent errors in the tool setting process. Due to these errors, the dimensions of the machined shaft parts will differ after machining, affecting the consistency of machining accuracy across the multiple shaft parts. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping device and a grinding equipment for synchronously clamping and fixing multiple shaft parts, so that multiple shaft parts can be processed simultaneously, improving processing efficiency and ensuring uniform processing accuracy of multiple shaft parts.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A clamping device is provided for clamping multiple shaft-type parts; the clamping device includes a reference platform and a mounting member located on one side of the reference platform; the reference platform is provided with a reference plane, which is used to abut against the non-machined ends of the multiple shaft-type parts respectively, so that the non-machined ends of the multiple shaft-type parts are located on the same plane;

[0007] The mounting component is provided with multiple mounting slots and multiple threaded holes. The threaded holes communicate with the corresponding mounting slots, and the extension direction of the threaded holes intersects with the extension direction of the mounting slots. The multiple mounting slots are respectively used to accommodate a portion of the shaft-like part, and a tapered cavity is provided at the end of the mounting slot away from the threaded hole. The wall of the tapered cavity is used to abut against the corresponding shaft-like part. The mounting component is threadedly connected to a threaded fastener through the threaded hole. One end of the threaded fastener extends into or out of the corresponding mounting slot to fix or release the shaft-like part located in the corresponding mounting slot.

[0008] Preferably, the radial cross-sectional profile of the mounting groove is greater than the maximum radial cross-sectional profile of the portion of the plurality of shaft parts extending into the mounting groove; the plurality of threaded fasteners extend into the corresponding mounting grooves by different lengths to fix the shaft parts with different radial cross-sectional profiles.

[0009] Preferably, the mounting groove further includes a rectangular cavity communicating with the tapered cavity, the rectangular cavity communicating with the corresponding threaded hole, and the wall of the rectangular cavity being spaced apart from the corresponding shaft part.

[0010] Preferably, within one of the mounting grooves, the position where the wall forming the tapered cavity abuts against the shaft-like part and the position where the threaded fastener abuts against the shaft-like part are arranged opposite to each other.

[0011] Preferably, the gradually narrowing cavity is a V-shaped cavity, the V-shaped cavity includes two inclined sides, the two inclined sides form a V-shaped profile, and the angle between the inclined sides and the horizontal line parallel to the length direction of the mounting component is 55° to 65°.

[0012] Preferably, the shaft part includes a cylindrical portion, which is received within the mounting groove, and the radial cross-sectional profile of the cylindrical portion is smaller than the radial cross-sectional profile of the corresponding mounting groove.

[0013] Preferably, the end of the V-shaped cavity away from the corresponding threaded hole is provided with a rounded chamfer, and the radius of the rounded chamfer is less than or equal to the radius of the cylindrical part.

[0014] Preferably, the plurality of mounting slots are arranged in two rows, the two rows of mounting slots are arranged opposite each other, and the two rows of mounting slots are located at opposite ends in the width direction of the mounting component; each row of mounting slots includes a plurality of mounting slots arranged at equal intervals along the length direction of the mounting component.

[0015] Preferably, the mounting component is spaced apart from the reference platform, and the reference platform is provided with a fixing unit for fixing the mounting component, so that the mounting component and the reference platform remain relatively fixed.

[0016] Alternatively, the mounting component abuts against the reference platform, and the mounting component is fixed to the reference platform.

[0017] A grinding apparatus, comprising:

[0018] The clamping device of any one of the above, wherein the clamping device clamps multiple shaft parts, and the end of the shaft part to be processed protrudes from the mounting part of the clamping device;

[0019] A grinding element, used for grinding the end of the shaft-like part to be processed;

[0020] A driving component is used to drive the grinding element to move horizontally, so that the grinding element grinds multiple shaft-like parts and places the ends of the multiple shaft-like parts to be processed on the same plane.

[0021] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0022] By designing a mounting component with multiple mounting slots and threaded holes, each mounting slot can accommodate a portion of a shaft-like part, and threaded fasteners can extend into the corresponding threaded holes to secure the shaft-like part. Multiple mounting slots allow multiple shaft-like parts to be fixed to the clamping device, enabling simultaneous machining of these parts, improving machining efficiency, reducing errors caused by multiple tool settings during machining, and ensuring consistent machining accuracy across the shaft-like parts. Furthermore, the inclusion of a tapered cavity allows the mounting slots to accommodate shaft-like parts of various sizes, ensuring that shaft-like parts of different sizes can stably abut against the wall forming the tapered cavity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the clamping device of this utility model when clamping two shaft-like parts;

[0024] Figure 2 This is a cross-sectional view of the clamping device of this utility model when connected to multiple shaft-type parts;

[0025] Figure 3 This is a partial structural schematic diagram of the clamping device according to an embodiment of the present utility model;

[0026] Figure 4 This is a partial structural schematic diagram of the clamping device used to fix shaft-type parts according to an embodiment of the present invention.

[0027] In the diagram: 100, clamping device; 1, reference platform; 11, reference plane; 2, mounting part; 21, mounting groove; 211, tapering cavity; 2111, bevel; 2112, rounded chamfer; 212, rectangular cavity; 22, threaded hole; 3, threaded fastener; 31, rod; 32, head; 200, shaft part; 201, non-machined end; 202, end to be machined; 203, cylindrical part. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0029] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0030] like Figures 1 to 4 As shown, this utility model provides a clamping device 100, which can be used to clamp multiple shaft-like parts 200 to simultaneously fix the multiple shaft-like parts 200. The clamping device 100 includes a reference platform 1, a mounting member 2, and a threaded fastener 3.

[0031] Reference Figure 2 The reference platform 1 is provided with a reference plane 11, which can be the surface of the reference platform 1 facing the shaft part 200. The reference plane 11 can be used to abut against multiple shaft parts 200 respectively, so that one end of the multiple shaft parts 200 is restricted to the same plane. Each shaft part 200 can include a non-machined end 201 and a machined end 202; the machined end 202 of the shaft part 200 is the end of the shaft part 200 that needs to be machined, and the non-machined end 201 of the shaft part 200 can be used to abut against the reference plane 11. The reference plane 11 can be a horizontal plane, and after the non-machined ends 201 of the multiple shaft parts 200 abut against the reference plane 11, the non-machined ends 201 of the multiple shaft parts 200 can be located at the same height.

[0032] Mounting member 2 is located on one side of the reference stage 1, for example, above it. In some embodiments, mounting member 2 can abut against the reference stage 1, and mounting member 2 can be fixed to the reference stage 1 by fasteners such as screws.

[0033] In some other embodiments, the mounting component 2 can be spaced apart from the reference platform 1. For example, a fixing unit is provided on the reference platform 1. The fixing unit can be fixed to the mounting component 2 to support the mounting component 2, thereby allowing the mounting component 2 to be spaced apart from the reference platform 1 and remain relatively fixed. The fixing unit can be a structure such as a bracket, and can be fixedly connected to the mounting component 2 and the reference platform 1 respectively by fasteners such as screws.

[0034] The unmachined end 201 of the shaft part 200 can be inserted into the corresponding mounting groove 21 of the mounting member 2 from above, and the unmachined end 201 of the shaft part 200 passes through the mounting groove 21 of the shaft part 200 to abut against the reference plane 11 of the reference platform 1; or, the mounting member 2 can be separated from the reference platform 1, so that the shaft part 200 abuts against the reference plane 11 of the reference platform 1 first, and then the mounting member 2 is installed on the reference platform 1 and the mounting member 2 is sleeved on the shaft part 200.

[0035] Reference Figure 1The mounting component 2 may be provided with multiple mounting slots 21 and multiple threaded holes 22. The number of mounting slots 21 and threaded holes 22 may be the same, and each mounting slot 21 corresponds to one threaded hole 22, with the mounting slot 21 communicating with the corresponding threaded hole 22. Each mounting slot 21 can be used to mate with a shaft part 200, and a portion of the corresponding shaft part 200 is accommodated within the mounting slot 21. The multiple mounting slots 21 may be arranged in two rows, with the two rows of mounting slots 21 facing each other and located at opposite ends in the width direction of the mounting component 2; each row of mounting slots 21 includes multiple mounting slots 21 arranged at equal intervals along the length direction of the mounting component 2. Each mounting slot 21 communicates with a corresponding threaded hole 22. One end of the threaded hole 22 communicates with the corresponding mounting slot 21, and the other end of the threaded hole 22 extends outward toward the outside of the mounting component 2 and communicates with the outside of the mounting component 2.

[0036] To facilitate the installation of shaft parts 200, the radial cross-sectional profile of the mounting groove 21 can be larger than the maximum radial cross-sectional profile of the portion of the multiple shaft parts 200 housed within the mounting groove 21; that is, when the mounting groove 21 and the portion of the shaft parts 200 housed within the mounting groove 21 are projected onto the same plane along the axial direction, the projection of the mounting groove 21 can completely cover the projection of the portion of the multiple shaft parts 200 housed within the mounting groove 21. Therefore, when the shaft parts 200 are installed in the mounting groove 21, the shaft parts 200 and the mounting groove 21 have a clearance fit, which facilitates the installation of the shaft parts 200. The axial direction can be the extension direction of the mounting groove 21 or the axial direction of the shaft parts 200, and the radial direction is perpendicular to the axial direction; specifically, the axial direction can be vertical, and the radial direction can be horizontal.

[0037] Reference Figure 1 and Figure 2 In some specific embodiments, the shaft part 200 may include a cylindrical portion 203, which can be accommodated within the mounting groove 21. The radial cross-sectional profile of the cylindrical portion 203 is smaller than the radial cross-sectional profile of the corresponding mounting groove 21. The shaft part 200 may be integrally cylindrical, with the cylindrical portion 203 being a part of this cylindrical structure.

[0038] The radial cross-sectional profiles of the multiple mounting slots 21 can be identical to facilitate the machining of the mounting part 2. The dimensions of the multiple shaft parts 200 can be the same or different. For example, the dimensions of the multiple shaft parts 200 can be different, that is, the diameters of the cylindrical portions 203 of at least the multiple shaft parts 200 can be different. The radial cross-sectional profile of the cylindrical portion 203 with the largest diameter among the multiple shaft parts 200 is smaller than the radial cross-sectional profile of the mounting slot 21, that is, when the mounting slot 21 and the cylindrical portion 203 with the largest diameter are projected onto the same plane in the axial direction, the projection of the mounting slot 21 can completely cover the projection of the cylindrical portion 203 with the largest diameter. By making the radial cross-sectional profile of the cylindrical portion 203 with the largest diameter among the multiple shaft parts 200 smaller than the radial cross-sectional profile of the mounting slot 21, it can be ensured that the multiple shaft parts 200 can all mate with the mounting slot 21, and the cylindrical portions 203 of the multiple shaft parts 200 can be installed more easily within the mounting slot 21.

[0039] The extension direction of the threaded hole 22 can intersect with the extension direction of the corresponding mounting groove 21. Preferably, the extension direction of the threaded hole 22 is perpendicular to the extension direction of the corresponding mounting groove 21. For example, the extension direction of the threaded hole 22 is horizontal, and the extension direction of the mounting groove 21 is vertical. The threaded hole 22 can be used to mate with a threaded fastener 3, so that the mounting part 2 with the threaded hole 22 can be threadedly engaged with the threaded fastener 3. Each threaded hole 22 can be used to mate with one threaded fastener 3, and multiple threaded holes 22 can be correspondingly connected to multiple threaded fasteners 3.

[0040] Reference Figure 4 The threaded fastener 3 may include a shank 31 and a head 32. The shank 31 of the threaded fastener 3 has an external thread that mates with a threaded hole 22. The shank 31 of the threaded fastener 3 is screwed into the corresponding threaded hole 22 to achieve a threaded engagement with the mounting member 2. The head 32 of the threaded fastener 3 is located outside the mounting member 2, allowing the head 32 to rotate under external force, thereby causing the shank 31 to screw into or out of the mounting member 2. When the threaded fastener 3 is screwed into the mounting member 2, the shank 31 of the threaded fastener 3 can pass through the threaded hole 22 and extend into the corresponding mounting groove 21 to abut against the shaft part 200 located in the mounting groove 21, thereby fixing the shaft part 200. The threaded fastener 3 may be a bolt.

[0041] When it is necessary to fix the shaft part 200, the shaft part 200 is first installed on the clamping device 100. At this time, the non-machined end 201 of the shaft part 200 abuts against the reference plane 11 of the reference platform 1, and the machined end 202 of the shaft part 200 passes through the corresponding mounting groove 21 and protrudes outward from the mounting member 2. A part of the shaft part 200, such as the cylindrical part 203 of the shaft part 200, is accommodated in the mounting groove 21. By rotating the threaded fastener 3, the rod part 31 of the threaded fastener 3 gradually extends into the corresponding mounting groove 21 and abuts against the shaft part 200 located in the mounting groove 21 to tighten the shaft part 200, thereby fixing the shaft part 200.

[0042] When multiple shaft parts 200 have different dimensions, their radial cross-sectional profiles are different, and the lengths of the multiple threaded fasteners 3 extending into the mounting groove 21 can also be different. Specifically, when the shaft part 200 placed in a mounting groove 21 is smaller, the threaded fastener 3 corresponding to that mounting groove 21 needs to extend a longer distance into the mounting groove 21 to tighten the smaller shaft part 200; when the shaft part 200 placed in a mounting groove 21 is larger, the threaded fastener 3 corresponding to that mounting groove 21 only needs to extend a shorter distance into the mounting groove 21 to tighten the larger shaft part 200.

[0043] Reference Figure 3 and Figure 4 In some specific embodiments, the mounting groove 21 may include a tapered cavity 211 and a rectangular cavity 212 communicating with the tapered cavity 211. The tapered cavity 211 gradually contracts in the direction away from the threaded hole 22, so that the size of the tapered cavity 211 gradually decreases in the direction away from the threaded hole 22; for example, the tapered cavity 211 is a V-shaped cavity or a gradually contracting arc-shaped cavity; the tapered cavity 211 is located on the side of the rectangular cavity 212 away from the threaded hole 22. When the shaft part 200 is tightened by the threaded fastener 3, the side of the shaft part 200 adjacent to the threaded hole 22 is tightened by the threaded fastener 3, and the side of the shaft part 200 away from the threaded hole 22 abuts against the wall forming the tapered cavity 211.

[0044] A rectangular cavity 212 is located between the corresponding tapered cavity 211 and the corresponding threaded hole 22, and the rectangular cavity 212 can connect to both the corresponding tapered cavity 211 and the corresponding threaded hole 22. When the size of the shaft part 200 is large, a portion of the shaft part 200 will be located within the rectangular cavity 212, and the threaded fastener 3 corresponding to the threaded hole 22 can extend into the rectangular cavity 212 to abut against the portion of the shaft part 200 located within the rectangular cavity 212. When the size of the shaft part 200 is small, the shaft part 200 is located within the tapered cavity 211 but not within the rectangular cavity 212, and the threaded fastener 3 corresponding to the threaded hole 22 can pass through the rectangular cavity 212 and extend into the tapered cavity 211 to abut against the shaft part 200. The rectangular cavity 212 has a large space and can have a clearance fit with the shaft part 200.

[0045] In the same mounting groove 21, the position where the wall of the tapered cavity 211 abuts against the shaft part 200 and the position where the corresponding threaded fastener 3 abuts against the shaft part 200 are arranged opposite to each other, so that the mounting part 2 and the threaded fastener 3 cooperate to clamp the opposite sides of the shaft part 200, thereby fixing the shaft part 200.

[0046] By providing the tapered cavity 211, the mounting groove 21 can accommodate various shaft parts 200 of different sizes. When the shaft part 200 is small, it abuts against a smaller position in the tapered cavity 211 that is farther from the threaded hole 22; when the shaft part 200 is large, it abuts against a larger position in the tapered cavity 211 that is closer to the threaded hole 22. Therefore, shaft parts 200 of different sizes can abut against different positions on the wall forming the tapered cavity 211, ensuring that all shaft parts 200 of different sizes can stably abut against the wall forming the tapered cavity 211. When the threaded fastener 3 tightens against the shaft part 200, the shaft part 200 can be stably fixed to the clamping device 100.

[0047] When machining shaft-like parts 200 such as force transmission columns in a mold, multiple force transmission columns have different diameters. The clamping device 100 of this application can clamp and fix these force transmission columns of different diameters so that multiple force transmission columns can be processed simultaneously after being clamped by the clamping device 100.

[0048] In some specific embodiments, the tapered cavity 211 is configured as a V-shaped cavity, which includes two inclined sides 2111. The two inclined sides 2111 form a V-shaped profile, and the walls forming the two inclined sides 2111 can be used to abut against the shaft part 200. To ensure that the V-shaped cavity can be used for mounting shaft parts 200 with a large range of sizes and to prevent the size of the V-shaped cavity from being too large, the included angle formed between the inclined side 2111 and a horizontal line parallel to the length direction of the mounting part 2 is 55° to 65°, preferably 60°.

[0049] A rounded chamfer 2112 is provided at the end of the V-shaped cavity away from the corresponding threaded hole 22, that is, the vertices of the two inclined sides 2111 forming the V-shaped profile can be provided with a rounded chamfer 2112. The radius of the rounded chamfer 2112 can be less than or equal to the radius of the cylindrical portion 203 of the shaft part 200. When the radius of the cylindrical portion 203 of the shaft part 200 is equal to the radius of the rounded chamfer 2112, the shaft part 200 is the smallest shaft part 200 that the clamping device 100 can stably clamp, and the shaft part 200 abuts against the wall forming the rounded chamfer 2112; when the radius of the cylindrical portion 203 of the shaft part 200 is greater than the radius of the rounded chamfer 2112, the cylindrical portion 203 of the shaft part 200 abuts against the walls forming the two inclined sides 2111 respectively.

[0050] This utility model also provides a grinding device, including a grinding element, a driving element, and the aforementioned clamping device 100. The grinding element can be used to contact and grind the end 202 of the shaft part 200 to be processed. The grinding element can be a grinding disc, which grinds the end 202 of the shaft part 200 by rotating at a certain height. The driving element can drive the grinding element to move horizontally, and the driving element can adopt an existing driving structure.

[0051] After multiple shaft-like parts 200 are mounted on the clamping device 100, the non-machined ends 201 of the multiple shaft-like parts 200 abut against the reference plane 11 of the clamping device 100 and are located on the same plane, while the machined ends 202 of the multiple shaft-like parts 200 protrude from the mounting member 2. When the grinding workpiece moves horizontally under the drive of the driving member, the grinding workpiece can move to contact and grind the multiple shaft-like parts 200 respectively, and the multiple shaft-like parts 200 can be located on the same plane after grinding. At this time, the height of the multiple shaft-like parts 200 is consistent, ensuring uniform machining accuracy of the multiple shaft-like parts 200.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A clamping device, characterized in that, The clamping device is used to clamp multiple shaft parts (200); the clamping device includes a reference platform (1) and a mounting component (2) located on one side of the reference platform (1); the reference platform (1) is provided with a reference plane (11), the reference plane (11) is used to abut against the non-machined ends (201) of the multiple shaft parts (200) respectively, so that the non-machined ends (201) of the multiple shaft parts (200) are located on the same plane; The mounting component (2) is provided with a plurality of mounting slots (21) and a plurality of threaded holes (22). The threaded holes (22) are connected to the corresponding mounting slots (21), and the extension direction of the threaded holes (22) intersects the extension direction of the mounting slots (21). The plurality of mounting slots (21) are respectively used to accommodate a part of the shaft part (200), and a tapered cavity (211) is provided at the end of the mounting slot (21) away from the threaded hole (22). The wall of the tapered cavity (211) is used to abut against the corresponding shaft part (200). The mounting component (2) is threadedly connected to a threaded fastener (3) through the threaded hole (22). One end of the threaded fastener (3) extends into or out of the corresponding mounting slot (21) to fix or release the shaft part (200) located in the corresponding mounting slot (21).

2. The clamping device according to claim 1, characterized in that, The radial cross-sectional profile of the mounting groove (21) is greater than the maximum radial cross-sectional profile of the portion of the plurality of shaft parts (200) extending into the mounting groove (21); the plurality of threaded fasteners (3) extend into the corresponding mounting groove (21) for different lengths to fix the shaft parts (200) with different radial cross-sectional profiles.

3. The clamping device according to claim 1, characterized in that, The mounting groove (21) also includes a rectangular cavity (212) that communicates with the tapered cavity (211). The rectangular cavity (212) communicates with the corresponding threaded hole (22), and the wall of the rectangular cavity (212) is spaced apart from the corresponding shaft part (200).

4. The clamping device according to claim 3, characterized in that, Within the mounting groove (21), the position where the wall of the tapered cavity (211) abuts against the shaft part (200) is opposite to the position where the threaded fastener (3) abuts against the shaft part (200).

5. The clamping device according to claim 3, characterized in that, The gradually narrowing cavity (211) is a V-shaped cavity, which includes two inclined sides (2111). The two inclined sides (2111) form a V-shaped profile. The angle between the inclined side (2111) and the horizontal line parallel to the length direction of the mounting part (2) is 55° to 65°.

6. The clamping device according to claim 5, characterized in that, The shaft part (200) includes a cylindrical portion (203) which is housed in the mounting groove (21) and the radial cross-sectional profile of the cylindrical portion (203) is smaller than the radial cross-sectional profile of the corresponding mounting groove (21).

7. The clamping device according to claim 6, characterized in that, The V-shaped cavity is provided with a rounded chamfer (2112) at the end away from the corresponding threaded hole (22), and the radius of the rounded chamfer (2112) is less than or equal to the radius of the cylindrical part (203).

8. The clamping device according to claim 1, characterized in that, Multiple mounting slots (21) are arranged in two rows, the two rows of mounting slots (21) are arranged opposite each other, and the two rows of mounting slots (21) are located at opposite ends in the width direction of the mounting member (2); each row of mounting slots (21) includes multiple mounting slots (21) arranged at equal intervals along the length direction of the mounting member (2).

9. The clamping device according to claim 1, characterized in that, The mounting component (2) is spaced apart from the reference platform (1), and the reference platform (1) is provided with a fixing unit for fixing the mounting component (2), and the mounting component (2) and the reference platform (1) remain relatively fixed. Alternatively, the mounting component (2) abuts against the reference platform (1), and the mounting component (2) is fixed to the reference platform (1).

10. A grinding apparatus, characterized in that, include: The clamping device according to any one of claims 1 to 9, wherein the clamping device clamps a plurality of shaft parts (200), and the end (202) of the shaft part (200) to be processed protrudes from the mounting member (2) of the clamping device; A grinding element for grinding the end (202) to be processed of the shaft part (200); A driving component is used to drive the grinding component to move horizontally so that the grinding component grinds multiple shaft parts (200) and places the processing ends (202) of the multiple shaft parts (200) on the same plane.

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