Clamp for grinding wheel machining

Abstract

The utility model provides a grinding wheel processing clamp, the clamp comprises a clamp seat used for placing a grinding wheel and a clamping device used for clamping the grinding wheel, the upper surface of the clamp seat is provided with a sliding groove, the clamping device comprises a sliding plate, a clamping head, a motor, a bidirectional threaded screw rod and a limiting column, the sliding plate is connected with the sliding groove in a sliding mode, and the clamping head is connected with the motor. The clamping head is slidably connected with the upper surface of the sliding plate, the sliding plate is connected with the bidirectional threaded screw through threads arranged on the wall of an inner through hole of the sliding plate, and the motor is fixedly connected with one end of the bidirectional threaded screw. Preferably, the clamp further comprises a stabilizing device used for further improving the clamping stabilizing effect. According to the clamping device, the positions of the sliding plate and the clamping head can be rapidly adjusted, the clamping range of the clamp is adjusted by adjusting the relative positions of the sliding plate and the clamping head, the clamping flexibility of the clamp is high, stable clamping of workpieces of different specifications can be achieved, and the production efficiency of grinding wheel machining is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of grinding wheel processing technology, specifically a kind of fixture for grinding wheel processing. BACKGROUND

[0002] Grinding wheel is the most main grinding tool in grinding processing, grinding wheel is by binder ordinary abrasive consolidation into certain shape (most is circular, central hole), and have certain intensity of consolidation grinding tool, it is generally by abrasive, binder and pore, these three parts are often referred to as the three elements of consolidation grinding tool, grinding wheel is processed in, it will use to fixture, grinding wheel is clamped, so it is more convenient to process operation to grinding wheel.

[0003] Prior art such as the utility model patent with publication number CN209380567U discloses a positioning fixture for grinding wheel processing, including operation table, the middle part of operation table is provided with installation cavity, the middle part of installation cavity is rotatably provided with screw rod, two ball nut seats are rotatably sleeved on the middle part of screw rod, and the moving directions of the two ball nut seats are opposite, one side of operation table is fixedly connected with servo motor, one end of screw rod penetrates through one side of installation cavity and one side of operation table and is transmissionally connected with the output end of servo motor, the utility model discloses installation cavity, screw rod, ball nut seat, servo motor, shaft coupling and shaft can be used to drive clamping plate to move to clamp and fix grinding wheel by two ways of electric and manual, so as to prevent fixture from paralysis after power failure or click damage, unable to clamp and process grinding wheel, while reducing the labor intensity of manual clamping, so as to improve the processing efficiency of grinding wheel, solve the problem that the positioning fixture used for grinding wheel processing at present is mostly electric clamp, and when power failure or motor damage occurs, clamp paralysis will cause grinding wheel to be unable to clamp and process, pure manual operation will increase the labor intensity of employees, time-consuming and laborious, reduce the processing efficiency of grinding wheel.

[0004] However, the inventor found in daily work that the existing fixture for grinding wheel processing can only clamp grinding wheel through the moving area of clamping block in the fixture, once the size of grinding wheel is greater than the moving interval of clamping block of the fixture, the fixture cannot clamp grinding wheel, and large-size fixture needs to be replaced, so as to cause operation trouble, waste a lot of time and affect the processing efficiency of grinding wheel. Therefore, in order to avoid the situation that the processing efficiency is affected due to the mismatch between fixture and size or specification of grinding wheel, it is urgent to provide a fixture suitable for clamping grinding wheels of different sizes or specifications. UTILITY MODEL CONTENTS

[0005] The utility model discloses a clamp for grinding wheel processing, the clamp includes the fixture seat and the clamping device, wherein the fixture seat is used for placing the grinding wheel, and the clamping device is used for clamping the grinding wheel.

[0006] The utility model discloses a clamp for grinding wheel processing, the clamp includes the fixture seat and the clamping device, wherein the fixture seat is used for placing the grinding wheel, and the clamping device is used for clamping the grinding wheel.

[0007] The utility model discloses a clamp for grinding wheel processing, the clamp includes the fixture seat and the clamping device, wherein the fixture seat is used for placing the grinding wheel, and the clamping device is used for clamping the grinding wheel.

[0008] Further, the upper surface of the fixture seat is provided with a sliding groove.

[0009] Further, the clamping device includes sliding plates, clamping heads, a motor, a bidirectional threaded screw rod and limiting columns, wherein the sliding plates are at least two, and the sliding plates are slidably connected with the sliding groove provided on the upper surface of the fixture seat; the sliding plates are provided with through holes corresponding to the bidirectional threaded screw rod along the sliding direction of the sliding groove, and the through hole walls are provided with threads matched with the bidirectional threaded screw rod; the motor is fixedly connected with one end of the bidirectional threaded screw rod; the upper surface of each sliding plate is slidably connected with a clamping head, the inside of the clamping head is slidably connected with a limiting column in a direction perpendicular to the sliding plate, and the upper surface of the sliding plate is provided with a limiting hole for inserting the limiting column.

[0010] Further, the two sliding plates are provided with threads on the through hole walls, which can be matched with threads in different directions of the bidirectional threaded screw rod, so that the two sliding plates can move in opposite directions along with the rotation of the bidirectional threaded screw rod, so that the clamping head can be clamped or released.

[0011] When the sliding plates are more than three, the more than three sliding plates have different sliding plates provided with threads matched with threads in different directions of the bidirectional threaded screw rod.

[0012] Further, the motor is fixed on the side wall of the fixture seat.

[0013] Further, the number of the limiting columns is a multiple of 2; more preferably, the limiting columns are symmetrically distributed on both sides of the bidirectional threaded screw rod in a direction perpendicular to the extension direction of the bidirectional threaded screw rod; for example, the limiting columns are four, and the four limiting columns are symmetrically distributed in the direction perpendicular to the extension direction of the bidirectional threaded screw rod, wherein two limiting columns are distributed on one side of the bidirectional threaded screw rod, and the other two limiting columns are distributed on the other side of the bidirectional threaded screw rod.

[0014] Further, the limiting holes include multiple groups of limiting holes opened along the sliding direction of the sliding groove, and the number of limiting holes in each group is greater than or equal to the number of limiting columns; preferably, the number of limiting holes in each group is equal to the number of limiting columns, and each group of limiting holes can be inserted into the limiting column one by one.

[0015] Further, the number of groups of limiting holes is 2 or more, preferably 2 to 20.

[0016] Further, the distance between each group of limiting holes in the multiple groups of limiting holes can be set according to the actual processing application scene, preferably set at equal distances or set in a way that the distance decreases from both ends to the middle.

[0017] Further, the side surface of the sliding plate close to the side wall of the sliding groove is fixedly connected with a scale; preferably, the scale has a scale corresponding to each group of limiting holes on the upper surface of the sliding plate (i.e., each group of limiting holes has a corresponding scale, but the scale is not limited to the scale corresponding to the multiple groups of limiting holes).

[0018] Further, the two side surfaces of the sliding plate close to the side wall of the sliding groove are fixedly connected with scales; preferably, the scales have scales corresponding to each group of limiting holes on the upper surface of the sliding plate (i.e., each group of limiting holes has a corresponding scale, but the scale is not limited to the scale corresponding to the multiple groups of limiting holes).

[0019] Further, one side surface of the clamping head is fixedly connected with an indicating block corresponding to the scale.

[0020] Further, the two side surfaces of the clamping head are fixedly connected with indicating blocks corresponding to the scale.

[0021] Further, a control member for controlling the up and down movement of the limiting column is threadedly connected to the upper part of the clamping head.

[0022] Further, the control member includes a control screw and a control ring, and the inside of the clamping head is provided with a threaded hole corresponding to the control screw in a direction perpendicular to the sliding plate, the control screw is connected to the clamping head through the threaded hole, and the lower end of the control screw is fixedly connected with the control ring, which is located above the limiting column.

[0023] In some embodiments, the control ring is fixedly connected with the limiting column, so that the limiting column connected with the control ring moves up and down by rotating the control screw up and down to realize the pulling out and insertion of the limiting column from and into the limiting hole.

[0024] In some other embodiments, the limiting column is a T-shaped column, the small-diameter part of the column is externally sleeved with a spring, the diameter of the spring is smaller than the diameter of the large-diameter part of the limiting column but larger than the diameter of the limiting hole (i.e. the spring is located between the small-diameter part of the column and the clamping head, and the spring cannot be compressed into the limiting hole), and the upper end of the spring is fixedly connected with the lower surface of the large-diameter part of the limiting column. Preferably, the length of the spring is shorter than the length of the small-diameter part of the limiting column. In this embodiment, the control ring can not be connected with the limiting column, and only after the control ring moves downward, the limiting column can be pushed to move downward and be inserted into the limiting hole. When the control ring moves upward, the control ring removes the pressure on the limiting column, and the limiting column is pushed upward to move out of the limiting hole by the spring.

[0025] Further, the clamp further comprises a stabilizing device, which comprises a hollow block, a rotating component, a pressing screw, and a pressing ring. The hollow block is fixedly connected with the clamping head near the side surface of the side wall of the sliding groove. The rotating component is a combination of an L-shaped structure connected by a rotating rod and a rotating plate. The hollow block is provided with a through hole or an upwardly open blind hole corresponding to the rotating rod of the rotating component in the vertical direction, and the through hole or the blind hole of the hollow block is rotationally connected with the rotating rod of the rotating component, so that the rotating plate can be rotated around the rotating rod by rotating the rotating rod. The rotating plate of the rotating component is provided with a through hole corresponding to the pressing screw in the vertical direction at the end away from the rotating rod, and the through hole wall is provided with threads. The pressing screw is threadedly connected with the through hole of the rotating plate of the rotating component, and the lower end of the pressing screw is fixedly connected with the pressing ring.

[0026] Further, the rotating plate can be rotated at any angle around the rotating rod by rotating the rotating rod.

[0027] Further, the length of the rotating plate can be set according to the actual processing application scene, but the length of the rotating plate should meet the requirement that the pressing screw and the pressing ring are located directly above the grinding wheel after the rotating rod is rotated.

[0028] Further, the fixed connection part of the clamping head and the hollow block is near the end of the clamping head for clamping the grinding wheel. Preferably, the fixed connection part of the clamping head and the hollow block is located at the upper part of the side surface of the clamping head near the side wall of the sliding groove.

[0029] Further, the lower surface of the pressing ring is fixedly connected with a pressing piece. Preferably, the pressing piece is made of rubber material.

[0030] Further, each clamping head is fixedly connected with more than one set of stabilizing devices, preferably more than two sets; preferably, when the hollow blocks of the more than two sets of stabilizing devices are fixedly connected with the same clamping head, the hollow blocks are fixedly connected with the two side surfaces of the clamping head close to the side walls of the sliding groove and are uniformly distributed; for example, when the hollow blocks of four sets of stabilizing devices are fixedly connected with the same clamping head, two hollow blocks are fixedly connected with one side surface of the clamping head close to the side walls of the sliding groove and are uniformly distributed, and the other two hollow blocks are fixedly connected with the other side surface of the clamping head close to the side walls of the sliding groove and are uniformly distributed.

[0031] Further, each clamping head is fixedly connected with two sets of stabilizing devices.

[0032] The beneficial effects of the utility model are as follows:

[0033] 1. The clamping device of the clamp in the utility model can quickly adjust the positions of the sliding plate and the clamping head, and adjust the relative positions of the sliding plate and the clamping head to adjust the clamping range of the clamp, the clamping flexibility of the clamp is high, the stable clamping of workpieces of different specifications can also be realized, the time for replacing the clamp due to size mismatch is saved, and therefore the production efficiency of the grinding wheel machining is improved.

[0034] 2. The clamp in the utility model is further provided with more than one set of stabilizing devices, and the stability of the clamped grinding wheel can be improved through the stabilizing devices, and the situation that the machining is affected due to the jumping of the grinding wheel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A three-dimensional structure schematic diagram of the clamp in one embodiment of the utility model is shown.

[0036] Figure 2 A schematic diagram of the remaining part of the structure after removing one clamping head 22 close to one side of the motor 24 is shown. Figure 1

[0037] A schematic diagram of the remaining part of the structure after removing one clamping head 22 close to one side of the motor 24 is shown. Figure 3

[0038] A schematic diagram of the remaining part of the structure after removing one clamping head 22 close to one side of the motor 24 is shown. Figure 4

[0039] Figure 5 ​The utility model discloses an embodiment tablet 33, lower pressure screw rod 34, the structure diagram of pressure ring 35. The figure mark explanation: 1, fixture base, 2, clamping device, 21, sliding plate, 22, clamping head, 23, control piece, 231, control screw rod, 232, control ring, 24, motor, 25, two -way thread screw rod, 26, scale, 27, indicating block, 28, limit post, 29, spring, 3, stabilizing device, 31, hollow block, 32, rotating rod, 33, tablet, 34, lower pressure screw rod, 35, pressure ring. DETAILED DESCRIPTION

[0040] The utility model discloses a technology further illustrate the utility model by example. These examples are the illustration and example of the utility model, and do not limit the scope of the utility model in any form.

[0041] A grinding wheel processing clamp, including fixture base 1 and clamping device 2. The three -dimensional structure schematic diagram of clamp as Figure 1 Shown, Figure 1 Remove the remaining part structure diagram as Figure 2 Shown after one clamping head 22 close to motor 24 side.

[0042] The upper surface of fixture base 1 is provided with a sliding groove.

[0043] Clamping device 2 includes sliding plate 21, clamping head 22, motor 24, two -way thread screw rod 25, limit post 28, wherein sliding plate 21 is two, and the inner wall of the sliding groove of the upper surface of fixture base 1 is slidably connected with two sliding plates 21, and the through hole corresponding with two -way thread screw rod 25 is formed in the inside of two sliding plates 21 along the sliding direction of the sliding groove, and the through hole wall is provided with a thread, and the thread arranged on the through hole wall of the inside of two sliding plates 21 can be matched with the threads of two -way thread screw rod 25 in different directions, and two sliding plates 21 are connected with two -way thread screw rod 25 through the thread arranged on the through hole wall of the inside, and one end of motor 24 is fixedly connected with two -way thread screw rod 25 and is fixed on the side wall of fixture base 1, and the upper surface of sliding plate 21 is slidably connected with clamping head 22, and the inside of clamping head 22 is slidably connected with two limit posts 28 along the direction perpendicular to sliding plate 21, and a plurality of limit holes, which can be inserted with two limit posts 28, are formed in the upper surface of sliding plate 21. The partial structure schematic diagram of clamping device as Figure 3 Shown, the partial sectional structure schematic diagram of clamping device as Figure 4 Shown.

[0044] Each group of limit holes includes two limit holes, which are perpendicular to two -way thread screw rod 25 and are symmetrically distributed on the two sides of two -way thread screw rod 25, and the number of limit hole groups can be set according to the actual application scene of the clamp, and is at least 2 groups, such as Figure 2 As shown, it can be 11 groups.

[0045] In the embodiment, the motor 24 drives the bidirectional threaded screw rod 25 to rotate, and the bidirectional threaded screw rod 25 can drive the two sliding plates 21 to move in opposite directions (when clamping is needed, the two sliding plates 21 move towards each other; when the clamping needs to be released, the two sliding plates 21 move away from each other), and the two sliding plates 21 drive the two clamping heads 22 on the upper surfaces thereof to clamp or release the grinding wheel. In addition, the position of the clamping head 22 on the sliding plate 21 can be adjusted by the limiting column 28 in the clamping head 22 cooperating with the limiting hole on the surface of the sliding plate 21, so that the transverse clamping range and clamping stability of the clamping device 2 can be improved, and the clamping flexibility of the clamp for different specifications of grinding wheels can be improved.

[0046] Further, the control member 23 is threadedly connected to the upper portion of the clamping head 22. The control member 23 includes a control screw 231 and a control ring 232. A threaded hole corresponding to the control screw 231 is formed in the clamping head 22 along the vertical direction. The control screw 231 is connected to the clamping head 22 through the threaded hole. The lower end of the control screw 231 is fixedly connected to the control ring 232. The control ring 232 is located above the limiting column 28.

[0047] The limiting column 28 is a T-shaped column. The outer portion of the small-diameter column portion is sleeved with a spring 29. The diameter of the spring 29 is smaller than the diameter of the large-diameter column portion of the limiting column 28 but larger than the diameter of the limiting hole (i.e., the spring 29 is located between the small-diameter column portion and the clamping head 22, and the spring 29 cannot be compressed into the limiting hole). The upper end of the spring 29 is fixedly connected to the lower surface of the large-diameter column portion of the limiting column 28. The length of the spring 29 is shorter than the length of the small-diameter column portion of the limiting column 28.

[0048] In the embodiment, when the control member 23 controls the limiting column 28, the control screw 231 is rotated to drive the control ring 232 to move up and down. When the control ring 232 moves downward, it can contact the upper surface of the limiting column 28 and extrude the limiting column 28 to move downward and insert into the limiting hole. At the same time, the large-diameter column portion of the limiting column 28 compresses the spring 29. When the control ring 232 moves upward and removes the extrusion on the limiting column 28, the large-diameter column portion of the limiting column 28 also removes the pressure on the spring 29. The spring 29 drives the limiting column 28 to reset, so that the limiting column 28 is pulled out of the limiting hole, thereby completing the entire control process of the control member 23 on the limiting column 28.

[0049] Further, the two side surfaces of the sliding plate 21 close to the side walls of the sliding groove are fixedly connected with scales 26. The scales 26 are one-to-one corresponding to the multiple sets of limiting holes formed on the upper surface of the sliding plate 21 (one set of limiting holes corresponds to one scale). The two sides of the clamping head 22 are fixedly connected with indicating blocks 27 corresponding to the scales 26, so that when the clamping head 22 moves, the indicating blocks 27 can cooperate with the scales 26 to be accurately adjusted.

[0050] Further, the grinding wheel machining clamp further comprises four sets of stabilizing devices 3, and each clamping head 22 is fixedly connected with two sets of stabilizing devices 3. The stabilizing device 3 comprises a hollow block 31, a rotating part 32, a pressing screw 34, and a pressing ring 35. The hollow block 31 is fixedly connected with the upper part of the side surface of the clamping head 22 close to the side wall of the sliding groove, and the fixed connection part is close to one end of the clamping head 22 for clamping the grinding wheel. The rotating part 32 is a combination of an L-shaped structure connected by a rotating rod and a rotating plate. The hollow block 31 is provided with a through hole corresponding to the rotating rod of the rotating part 32 in the vertical direction, and the through hole of the hollow block 31 is rotationally connected with the rotating rod of the rotating part 32, so that the rotating plate can be rotated at any angle around the rotating rod by rotating the rotating rod. The rotating plate of the rotating part 32 is provided with a through hole corresponding to the pressing screw 34 in the vertical direction at the end away from the rotating rod, and the through hole wall is provided with threads. The pressing screw 34 is threadedly connected with the through hole of the rotating plate of the rotating part 32, and the lower end of the pressing screw 34 is fixedly connected with the pressing ring 35.

[0051] In the two sets of stabilizing devices 3 fixedly connected with the same clamping head 22, the two hollow blocks 31 are respectively fixedly connected with the two side surfaces of the clamping head 22 close to the side wall of the sliding groove, and the fixed connection parts are close to one end of the clamping head 22 for clamping the grinding wheel and are located at the upper parts of the two side surfaces.

[0052] In the present embodiment: after the two clamping heads 22 clamp the grinding wheel, the rotating rod of the rotating part 32 can be rotated so that the pressing ring 35 is located above the grinding wheel, and then the pressing screw 34 is rotated, which can drive the pressing ring 35 to press on the grinding wheel, thereby improving the clamping stability of the grinding wheel.

[0053] Further, the lower surface of the pressing ring 35 is fixedly connected with a pressing piece 33 made of rubber material, which can reduce the friction between the pressing ring 35 and the grinding wheel and improve the protection effect on the grinding wheel. The structure diagram of the pressing piece 33, the pressing screw 34, and the pressing ring 35 is shown in Figure 5 .

[0054] The working principle of the clamp is as follows: when the grinding wheel needs to be clamped, firstly, the grinding wheel is placed in the middle part of the sliding groove on the clamp seat 1, the motor 24 is turned on, the motor 24 drives the bidirectional threaded screw rod 25 to rotate, the bidirectional threaded screw rod 25 drives the two sliding plates 21 to move towards each other, and the sliding plates 21 further drive the clamping heads 22 to move towards each other to clamp the grinding wheel. When the clamping range needs to be adjusted, the control screw rod 231 is rotated to drive the control ring 232 to move upwards, then the control ring 232 loses the control on the limiting column 28, the spring 29 drives the limiting column 28 to reset, the limiting column 28 moves out of the limiting hole on the upper surface of the sliding plate 21, then the clamping head 22 is slid in the sliding plate 21 to the target position, the clamping head 22 can be precisely adjusted by the indicating block 27 in cooperation with the scale 26 when the clamping head 22 is slid, after the clamping head 22 is adjusted to the target position, the control screw rod 231 is rotated to drive the control ring 232 to move downwards, the control ring 232 extrudes the limiting column 28, and the limiting column 28 is inserted into the limiting hole on the upper surface of the sliding plate 21, that is, the clamping range adjustment is completed. After the two clamping heads 22 clamp the grinding wheel, the rotating rod of the rotating part 32 in the hollow block 31 can be rotated to make the rotating plate drive the pressing screw rod 34 and the pressing ring 35 to rotate to the upper side of the grinding wheel, then the pressing screw rod 34 is rotated to drive the pressing ring 35 and the pressing piece 33 to press on the upper side of the grinding wheel, so that the clamping stability of the grinding wheel is improved.

[0055] It should be noted that the above-described embodiments are only used to explain the present application and do not constitute any limitation on the present application. The embodiments describe the present application, and it should be understood that the words used therein are descriptive and explanatory words, rather than limiting words. The present application can be modified within the scope of the claims, and the present application can be revised without departing from the scope and spirit of the present application.

Claims

1. A jig for grinding wheel machining, characterized in that, The clamp includes a clamp base (1) and a clamping device (2); Among them, the upper surface of the clamp seat (1) is provided with a sliding groove; The clamping device (2) includes a sliding plate (21), a clamping head (22), a motor (24), a bidirectional threaded screw (25), and a limiting post (28). The sliding plate (21) consists of at least two pieces, and the sliding plate (21) is slidably connected to a groove on the upper surface of the clamping seat (1). The sliding plate (21) has through holes corresponding to the bidirectional threaded screw (25) along the sliding direction of the groove, and the walls of the through holes are provided with grooves matching the bidirectional threaded screw (25). The sliding plate (21) is connected to the double-threaded screw (25) through the thread provided in the inner through hole wall; the motor (24) is fixedly connected to one end of the double-threaded screw (25); a clamping head (22) is slidably connected to the upper surface of each sliding plate (21), and a limit post (28) is slidably connected inside the clamping head (22) in a direction perpendicular to the sliding plate (21). A limit hole is provided on the upper surface of the sliding plate (21) so that it can be inserted into the limit post (28).

2. The clamp according to claim 1, characterized in that, The sliding plate (21) consists of two pieces, and the threads provided in the through holes of the two sliding plates (21) can be matched with the threads in different directions of the bidirectional threaded screw (25); And / or, the motor (24) is fixed to the side wall of the clamp seat (1); And / or, the limiting post (28) is two or more.

3. The clamp according to claim 2, characterized in that, The number of the limiting posts (28) is a multiple of 2.

4. The clamp according to claim 2, characterized in that, The limiting pins (28) are symmetrically distributed on both sides of the bidirectional threaded screw (25) along the extension direction perpendicular to the bidirectional threaded screw (25).

5. The clamp according to claim 2, characterized in that, The limiting holes include multiple sets of limiting holes opened along the sliding direction of the slide, and the number of holes in each set of limiting holes is greater than or equal to the number of limiting posts (28).

6. The clamp according to claim 5, characterized in that, The number of sets of limiting holes is 2 or more.

7. The clamp according to claim 6, characterized in that, The number of sets of limiting holes is 2 to 20.

8. The clamp according to claim 5, characterized in that, A scale (26) is fixedly connected to one or both sides of the sliding plate (21) near the side wall of the chute.

9. The clamp according to claim 8, characterized in that, The scale (26) corresponds one-to-one with the multiple sets of limiting holes opened on the upper surface of the sliding plate (21).

10. The clamp according to claim 9, characterized in that, One or both sides of the clamping head (22) are fixedly connected to an indicator block (27) corresponding to the scale (26).

11. The clamp according to any one of claims 1 to 10, characterized in that, A control element (23) for controlling the up-and-down movement of the limit post (28) is threaded onto the upper part of the clamping head (22).

12. The clamp according to claim 11, characterized in that, The control component (23) includes a control screw (231) and a control ring (232). The inside of the clamping head (22) is provided with a threaded hole corresponding to the control screw (231) along a direction perpendicular to the slide plate (21). The control screw (231) is connected to the clamping head (22) through the threaded hole. The lower end of the control screw (231) is fixedly connected to the control ring (232), which is located above the limiting post (28).

13. The clamp according to claim 12, characterized in that, The control ring (232) is fixedly connected to the limiting post (28); Alternatively, the limiting post (28) is a T-shaped post. The smaller diameter part of the limiting post (28) is fitted with a spring (29), and the diameter of the spring (29) is smaller than the diameter of the larger diameter part of the limiting post (28) but larger than the diameter of the limiting hole. The upper end of the spring (29) is fixedly connected to the lower surface of the larger diameter part of the limiting post (28).

14. The clamp according to claim 13, characterized in that, The length of the spring (29) is shorter than the length of the column portion with the smaller diameter of the limiting post (28).

15. The clamp according to any one of claims 1 to 10, 12 to 13, characterized in that, The clamp also includes a stabilizing device (3), which includes a hollow block (31), a rotating component (32), a pressing screw (34), and a pressure ring (35); the hollow block (31) is fixedly connected to the side surface of the clamping head (22) near the side wall of the slide groove; the rotating component (32) is an assembly consisting of a rotating rod and a rotating plate connected in an L-shape; the hollow block (31) has a through hole or an upward-opening blind hole in the vertical direction corresponding to the rotating rod of the rotating component (32). The through hole or blind hole of the block (31) is rotatably connected to the rotating rod of the rotating component (32), so that the rotating plate can be driven to rotate around the rotating rod by rotating the rotating rod; the rotating plate of the rotating component (32) has a through hole corresponding to the pressing screw (34) in the vertical direction at the end away from the rotating rod and the through hole wall is threaded. The pressing screw (34) is threadedly connected to the through hole of the rotating plate of the rotating component (32), and a pressure ring (35) is fixedly connected to the lower end of the pressing screw (34).

16. The clamp according to claim 15, characterized in that, The fixed connection part of the clamping head (22) and the hollow block (31) is close to the end of the clamping head (22) used to clamp the grinding wheel.

17. The clamp according to claim 16, characterized in that, The fixed connection between the clamping head (22) and the hollow block (31) is located on the upper part of the side surface of the clamping head (22) near the side wall of the slide groove.

18. The clamp according to claim 16, characterized in that, A pressure plate (33) is fixedly connected to the lower surface of the pressure ring (35).

19. The clamp according to claim 18, characterized in that, The tablet (33) is made of rubber material.

20. The clamp according to any one of claims 16 to 19, characterized in that, Each clamping head (22) is fixedly connected with one or more sets of stabilizing devices (3).

21. The clamp according to claim 20, characterized in that, Each clamping head (22) is fixedly connected with two or more sets of stabilizing devices (3).

22. The clamp according to claim 21, characterized in that, When the hollow blocks (31) of two or more sets of stabilizing devices (3) are all fixedly connected to the same clamping head (22), the hollow blocks (31) are fixedly connected to the two sides of the clamping head (22) near the side wall of the slide groove and are evenly distributed.

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