Clamping fingers and positioning clamping devices for bearing machining and grinding

Abstract

This invention relates to a clamping finger and a positioning and clamping device for bearing machining and grinding. It includes a sliding seat and clamping teeth disposed on the sliding seat. Two clamping teeth are arranged side-by-side, with each tooth having a flat side facing away from the other, and both are slidably mounted within the sliding seat. Support springs are provided at the lower ends of the two clamping teeth. Under the action of the support springs, the upper ends of both clamping teeth extend beyond the sliding seat. Guide slopes are provided on opposite sides of the upper ends of the two clamping teeth. This technical solution, when in contact with the outer or inner ring of the bearing, allows one of the clamping teeth to retract under the elastic support of the support springs, thus dispersing and absorbing some of the resistance from the outer or inner ring of the bearing, reducing the reaction force on the clamping teeth, and providing a certain degree of protection for them.

Description

Technical Field

[0001] This invention relates to the field of bearing processing equipment technology, specifically to a clamping tooth and a positioning and holding device for bearing processing and grinding. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] Bearings generally consist of an inner ring, an outer ring, and a rolling support section located between the inner and outer rings. The inner and outer rings are fixed to two relatively rotating structures. When the two relatively rotating structures move, the rolling support structure reduces the friction generated by rotation.

[0004] Both the inner ring of the bearing's inner ring and the outer ring of the outer ring are provided with annular grooves to accommodate the rolling support structure. The smoothness of the annular grooves directly affects the bearing's performance and requires grinding.

[0005] During the processing, for small and medium-sized bearings, the inner or outer ring of the bearing is usually clamped on the rotating part, that is, the grinding structure is kept stationary while the inner or outer ring rotates.

[0006] For large bearings, since the inner or outer ring is heavy, it is not easy to maintain stability during rotation. Therefore, the inner or outer ring is fixed and clamped, and the grinding structure rotates around the inner or outer ring to perform grinding.

[0007] When fixing, a chuck is usually used for clamping and fixing. The chuck is equipped with multiple clamping teeth that can move inward or outward simultaneously. The inner or outer ring of the bearing is fixed by the multiple clamping teeth. However, the outer or inner ring is not placed at the rotation trajectory center of the grinding structure. When the clamping teeth move, they need to push the outer or inner ring on the chuck. When the clamping teeth come into contact with the inner or outer ring, they will be subject to greater resistance, which will affect the structural stability of the clamping teeth. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide a clamping tooth and a positioning clamping device for bearing processing and grinding, so as to solve the problem that in the prior art, when the clamping tooth moves during the clamping process of large-size bearings, it needs to push the outer ring or inner ring of the bearing to move on the chuck. When the clamping tooth contacts the inner ring or outer ring of the bearing, it will be subject to great resistance, which will affect the structural stability of the clamping tooth.

[0009] This invention is achieved through the following technical solution:

[0010] A clamping finger includes a sliding seat and clamping teeth disposed on the sliding seat. Two clamping teeth are arranged side by side, and the opposite sides of the two clamping teeth are both flat and slidably installed in the sliding seat. A support spring is provided at the lower end of the two clamping teeth. Under the action of the support spring, the upper ends of the two clamping teeth extend out of the sliding seat. A guide slope is provided on the opposite side of the upper ends of the two clamping teeth.

[0011] Further defined, the top surface of the sliding seat has an installation groove, the installation groove is provided with a transverse partition, and the transverse partition divides the space into a first chamber located above the transverse partition and a second chamber located below the transverse partition. The two clamping teeth are slidably installed in the first chamber, and the transverse partition has sliding holes that are opposite to the lower ends of the two clamping teeth.

[0012] Both of the clamping teeth are connected to push rods at their lower ends. The push rods pass through the sliding holes and extend into the second chamber. The support spring is located in the second chamber, and its upper and lower ends abut against the ends of the push rods and the bottom of the second chamber, respectively.

[0013] Further specifying, the second chamber contains hydraulic oil, and the push rod and the sliding hole are sealed together.

[0014] Furthermore, a limiting block is provided at the end of the push rod away from the clamping teeth, and the inner diameter of the sliding hole is smaller than the outer diameter of the limiting block.

[0015] Furthermore, the limiting block has a slot at the end facing the support spring, and the end of the support spring is inserted into the slot.

[0016] A positioning and clamping device for bearing processing and grinding includes a circular fixed plate with multiple strip-shaped guide grooves. The multiple guide grooves extend along the radial direction of the fixed plate and are evenly distributed along the circumference of the fixed plate. Multiple sliding seats correspond one-to-one with the multiple guide grooves and are respectively fitted into the multiple guide grooves.

[0017] The top of the sliding seat is located inside the guide groove, and the upper end of the clamping teeth protrudes outside the guide groove;

[0018] A driving unit is provided below the fixed plate, which is used to drive multiple sliding seats to slide synchronously and in the same direction along the guide groove.

[0019] Furthermore, both sides of the inner wall of the guide groove of the sliding seat are planar structures.

[0020] Further defined, the driving unit includes a circular rotating disk, on which a pushing groove is formed that is one-to-one with a plurality of guide grooves. The plurality of pushing grooves are evenly distributed along the circumference of the rotating disk, and one end of the pushing groove is close to the center of the rotating disk and overlaps with the inward end of the guide groove. The other end of the pushing groove extends toward the outer edge of the rotating disk, and the extending direction intersects with the radial direction of the rotating disk.

[0021] The lower end of the sliding seat is slidably connected to the push groove, and a connecting seat is connected to the center of the bottom surface of the rotating disk.

[0022] Further specified, the sliding seat is provided with a pad protruding in all directions in the middle, the pad is located between the rotating disk and the fixed disk, and the width of the pushing groove and the guide groove is smaller than the width of the pad.

[0023] Further specified, the sliding seat is provided with support plates on both sides of the guide groove, the support plates are in contact with the pad, and a support rib is provided between the pad and the side wall of the sliding seat.

[0024] The beneficial effects of this invention are as follows:

[0025] This type of clamping tooth and positioning clamping device for bearing processing and grinding, when in contact with the outer or inner ring of the bearing, retracts one of the clamping teeth under the elastic support of the support spring, thereby dispersing and absorbing some of the resistance of the outer or inner ring of the bearing, reducing the reaction force on the clamping tooth, and playing a certain protective role for the clamping tooth.

[0026] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0027] Figure 1 A three-dimensional diagram of a finger pincher;

[0028] Figure 2 The front view of the finger gripper;

[0029] Figure 3 Left view of the finger pincher;

[0030] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of AA;

[0031] Figure 5 Three-dimensional positioning and clamping device for bearing machining and grinding Figure 1 ;

[0032] Figure 6 Three-dimensional positioning and clamping device for bearing machining and grinding Figure 2 ;

[0033] Figure 7 A cross-sectional schematic diagram of a positioning and clamping device used for bearing machining and grinding;

[0034] Figure 8 for Figure 7 Enlarged view of B in the middle;

[0035] In the diagram: 1. Sliding seat; 2. Clamping teeth; 3. Supporting spring; 4. Guide slope; 5. Transverse partition; 6. First chamber; 7. Second chamber; 8. Push rod; 9. Sliding hole; 10. Limiting block; 11. Slot; 12. Fixed plate; 13. Guide slide groove; 14. Rotating plate; 15. Push slide groove; 16. Connecting seat; 17. Pad; 18. Support plate; 19. Support rib. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0041] Please see Figure 1-4 The present invention provides a technical solution: a finger clamp, including a sliding seat 1 and clamping teeth 2 disposed on the sliding seat 1. Two clamping teeth 2 are arranged side by side, and the opposite side of the two clamping teeth 2 is a plane, and both are slidably installed in the sliding seat 1. A support spring 3 is provided at the lower end of the two clamping teeth 2. Under the action of the support spring 3, the upper end of the two clamping teeth extends out of the sliding seat 1. A guide slope 4 is provided on the opposite side of the upper end of the two clamping teeth 2.

[0042] Multiple clamping fingers work together to clamp and fix the outer or inner ring of the bearing. The sliding seat 1 serves as the mounting base for the clamping teeth 2. The upper end of the clamping teeth 2 extends out of the sliding seat 1 as the contact part with the outer or inner ring of the bearing. Two clamping teeth 2 are arranged side by side, and both sides are guided by the guide slope 4. The arrangement direction of the two clamping teeth 2 is the moving direction of the sliding seat 1. That is, when the sliding seat 1 moves in one direction, one of the clamping teeth 2 contacts the outer or inner ring of the bearing, and when the sliding seat 1 moves in another direction, the other clamping tooth 2 contacts the outer or inner ring of the bearing. When in contact, the contact with the outer or inner ring of the bearing is through the guide slope 4.

[0043] Since the lower ends of the two clamping teeth 2 are supported by the support springs 3, when the upper end of the clamping teeth 2 contacts the outer or inner ring of the bearing through the guide slope 4, the guide slope 4 disperses the reaction force applied by the outer or inner ring of the bearing into lateral thrust and longitudinal thrust. The clamping teeth 2 in contact with the outer or inner ring of the bearing will slide downward under the action of the longitudinal thrust, overcoming the thrust of the support spring 3, and retract into the sliding seat 1. Then the outer or inner ring of the bearing will abut against the side of another clamping tooth 2, and then move under the push of the side of another clamping tooth 2, so that the position of the outer or inner ring of the bearing is adjusted and the outer or inner ring of the bearing is clamped and fixed by multiple clamping teeth 2. When in contact with the outer or inner ring of the bearing, one of the clamping teeth 2 retracts under the elastic support of the support spring 3, forming a resistance dispersion and absorbing part of the outer or inner ring of the bearing, which can reduce the reaction force on the clamping teeth 2 and play a certain protective role for the clamping teeth 2.

[0044] In this embodiment, the top surface of the sliding seat 1 has an installation groove, the installation groove is provided with a transverse partition 5, and the transverse partition divides the space into a first chamber 6 located above the transverse partition and a second chamber 7 located below the transverse partition. The two clamping teeth are slidably installed in the first chamber 6, and the transverse partition is provided with sliding holes 9 opposite to the lower ends of the two clamping teeth.

[0045] Both of the clamping teeth are connected to push rods 8 at their lower ends. The push rods 8 pass through the sliding holes 9 and extend into the second chamber 7. The support spring 3 is located in the second chamber 7, and its upper and lower ends abut against the ends of the push rods 8 and the bottom of the second chamber 7, respectively.

[0046] The mounting slot is divided into a first chamber 6 and a second chamber 7 by a transverse partition 5. The first chamber 6 is used for the installation of two clamping teeth 2, and the second chamber 7 is used for the installation of the support spring 3. The transverse partition 5 has sliding holes 9 corresponding to the two clamping teeth 2. The lower ends of the two clamping teeth 2 are connected to push rods 8, and the push rods 8 slide with the sliding holes 9. The push rods 8 are structural extensions of the clamping teeth 2 and can be limited by the sliding holes 9, so that the shape stability of the clamping teeth 2 is improved during the sliding process. At the same time, the push rods 8 also serve as the contact part with the support spring 3, and as the force transmission structure for the support spring 3 to apply elastic force to the clamping teeth 2.

[0047] In this embodiment, the second chamber 7 contains hydraulic oil, and the push rod 8 and the sliding hole 9 are sealed together.

[0048] The push rod 8 and the sliding hole 9 are sealed together, that is, the second chamber 7 will form a closed chamber filled with hydraulic oil. When one of the clamping teeth 2 retracts into the sliding seat 1, the push rod 8 connected to it will also extend into the second chamber 7, that is, squeeze the hydraulic oil in the second chamber 7. Through pressure transmission, the other clamping tooth 2 will be pushed out of the sliding seat 1.

[0049] In the initial state, that is, when the two clamping teeth 2 are not in contact with the outer or inner ring of the bearing, the upper ends of the two clamping teeth 2 extend out of the sliding seat 1.

[0050] During the clamping process, when one of the clamping teeth 2 contacts the outer or inner ring of the bearing, it will retract into the sliding seat 1, and the other clamping tooth 2 will extend.

[0051] This can reduce the length of the two clamping teeth 2 protruding outside the sliding seat 1 in the initial state, thereby reducing the risk of the outer or inner ring of the bearing colliding with the clamping teeth 2 during hoisting and movement.

[0052] When the clamping tooth 2 is separated from the outer or inner ring of the bearing, the clamping tooth 2 that was compressed will extend under the elastic restoring action of the support spring 3. At the same time, the other extended clamping tooth 2 will be pulled back through the hydraulic oil, so that the two clamping teeth 2 return to their initial state.

[0053] In this embodiment, a limiting block 10 is provided at the end of the push rod 8 away from the clamping tooth 2, and the inner diameter of the sliding hole 9 is smaller than the outer diameter of the limiting block 10.

[0054] The limiting block 10 can be used as a sliding limiting structure for the push rod 8. Its outer diameter is larger than the outer diameter of the sliding hole 9, which can limit the maximum moving distance of the push rod 8 and prevent the push rod 8 from sliding out of the second chamber 7.

[0055] In this embodiment, the limiting block has a slot 11 at one end facing the support spring 3, and the end of the support spring 3 is inserted into the slot 11.

[0056] The limiting block 10 is a structural extension of the push rod 8. Its end face is provided with a slot 11 for engaging with the end of the support spring 3, so that the support spring 3 and the push rod 8 remain connected, preventing the support spring 3 from disengaging from the push rod 8 during its movement and improving the overall structural stability.

[0057] Please see Figure 5-8 The present invention provides a technical solution: a positioning and clamping device for bearing processing and grinding, comprising a circular fixed disk 12, wherein a plurality of strip-shaped guide grooves 13 are provided on the fixed disk 12, the plurality of guide grooves 13 extend along the radial direction of the fixed disk 12 and are evenly distributed along the circumference of the fixed disk 12, and a plurality of sliding seats 1 correspond one-to-one with the plurality of guide grooves 13 and respectively fit into the plurality of guide grooves 13;

[0058] The top of the sliding seat 1 is located inside the guide groove 13, and the upper end of the clamping tooth 2 protrudes out of the guide groove 13.

[0059] A driving unit is provided below the fixed plate 12, which is used to drive multiple sliding seats 1 to slide synchronously and in the same direction along the guide groove 13.

[0060] The fixed plate 12 can be connected to a fixed structure such as a machine base or worktable to make it fixed. The guide groove 13 serves as the sliding track of the sliding seat 1. Multiple sliding seats 1 move synchronously and in the same direction along the guide groove 13 under the action of the drive unit to move the outer ring or inner ring of the bearing. The outer ring or inner ring of the bearing is clamped and fixed by the clamping teeth 2.

[0061] Specifically, when grinding the inner ring surface of the outer ring or the inner ring surface of the inner ring of the bearing, first adjust the sliding of multiple sliding seats 1 so that multiple sliding seats 1 are located at the outer end of the guide groove 13. Then, the outer ring or inner ring of the bearing is hoisted and placed between multiple sliding seats 1. Subsequently, the multiple sliding seats 1 are moved inward synchronously by the drive unit. When moving inward, the top of one of the inner clamping teeth 2 contacts the outer ring or inner ring of the bearing through the guide inclined surface 4, and under the action of the guide inclined surface 4, it overcomes the elastic force of the support spring 3 and contracts inward.

[0062] When used for grinding the outer ring surface of the bearing's outer ring or the outer ring surface of the bearing's inner ring, first adjust the sliding of multiple sliding seats 1 so that multiple sliding seats 1 are located at the inner end of the guide groove 13. Then, the outer ring or inner ring of the bearing is hoisted and placed between multiple sliding seats 1. Subsequently, the multiple sliding seats 1 are moved outward synchronously by the drive unit. When moving outward, the top of one of the outermost clamping teeth 2 contacts the outer ring or inner ring of the bearing through the guide inclined surface 4, and under the action of the guide inclined surface 4, it contracts inward against the elastic force of the support spring 3.

[0063] The two clamping teeth 2 are located on both sides of the sliding track. By simply adjusting the initial position of the sliding seat 1, it can be used to process and grind the outer or inner ring surface of the bearing's outer or inner ring. It is highly adaptable and easy to operate.

[0064] In this embodiment, both sides of the inner wall of the sliding seat 1 near the guide groove 13 are planar structures.

[0065] The sliding seat 1 has two sides of the inner wall of the guide groove 13 as the direct contact parts with the inner wall of the guide groove 13. It has a planar structure, which means that it can keep in close contact with the inner wall of the guide groove 13. Through the cooperation, it can limit the sliding seat 1, prevent the sliding seat 1 from rotating during the sliding process and changing the direction of the two clamping teeth 2, and improve the stability of the overall structure.

[0066] In this embodiment, the driving unit includes a circular rotating disk 14. The rotating disk 14 has push grooves 15 that are one-to-one opposite to a plurality of guide grooves 13. The plurality of push grooves 15 are evenly distributed along the circumference of the rotating disk 14. One end of the push groove 15 is close to the center of the rotating disk 14 and overlaps with the inward end of the guide groove 13. The other end of the push groove 15 extends toward the outer edge of the rotating disk 14 and the extending direction intersects with the radial direction of the rotating disk 14.

[0067] The lower end of the sliding seat 1 is slidably connected to the push groove 15, and the center of the bottom surface of the rotating disk 14 is connected to the connecting seat 16.

[0068] A connecting seat 16 is provided at the center of the bottom surface of the rotating disk 14. The connecting seat 16 can be a spline hole, a spline shaft, or a coupling, etc., and can be connected to a power transmission structure such as a drive shaft. A push groove 15 is provided on it, and the lower end of the sliding seat 1 slides in the push groove 15.

[0069] The extension direction of the push slide 15 intersects with the extension direction of the guide slide 13, and the angle between the two is preferably in the range of 30° to 60°, with the optimal angle being 45°.

[0070] The push slide 15 rotates synchronously with the rotating disk 14. During the rotation, the side wall of the push slide 15 will cooperate with the guide slide 13 to squeeze and push the sliding seat 1, so that the sliding seat 1 moves along the guide slide 13.

[0071] In this embodiment, a pad 17 protruding outwards is provided in the middle of the sliding seat 1. The pad 17 is located between the rotating disk 14 and the fixed disk 12. The widths of the pushing groove 15 and the guide groove 13 are both smaller than the width of the pad 17.

[0072] The pad 17 supports the sliding seat 1, so that the sliding seat 1 remains in a fixed position under the clamping of the rotating disk 14 and the fixed disk 12, thereby improving the stability of the overall structure.

[0073] In this embodiment, the sliding seat 1 is provided with support plates 18 on both sides of the guide groove. The support plates 18 are in contact with the pad 17, and a support rib 19 is provided between the pad 17 and the side wall of the sliding seat 1.

[0074] The two directions facing the guide groove of the sliding seat 1 are the directions in which the outer or inner ring of the bearing generates a reaction force during use. Support plates 18 are provided on the sliding seat 1 and its opposite sides. The support plates 18 sit on the pad 17 and are supported by the sliding seat 1 through the ribs. They can form a support during the clamping process to help overcome the reaction force and further improve the stability of the overall structure.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A gripper finger, comprising a sliding seat and gripping teeth disposed on the sliding seat, characterized in that: Two clamping teeth are arranged side by side, and the opposite side of the two clamping teeth is a plane. Both are slidably installed in the sliding seat. The lower end of the two clamping teeth is provided with a support spring. Under the action of the support spring, the upper end of the two clamping teeth extends out of the sliding seat. The opposite side of the upper end of the two clamping teeth is provided with a guide slope. Since the lower ends of the two clamping teeth are supported by support springs, when the upper ends of the clamping teeth contact the outer or inner ring of the bearing through the guide slope, the guide slope disperses the reaction force applied by the outer or inner ring of the bearing into lateral thrust and longitudinal thrust. The clamping tooth in contact with the outer or inner ring of the bearing will slide downward under the action of longitudinal thrust, overcoming the thrust of the support spring, and retract into the sliding seat. Then the outer or inner ring of the bearing will abut against the side of another clamping tooth, and then move under the push of the side of the other clamping tooth, so that the position of the outer or inner ring of the bearing is adjusted and the outer or inner ring of the bearing is clamped and fixed by multiple clamping teeth. The push rod and the sliding hole are sealed together, that is, the second chamber will form a sealed chamber filled with hydraulic oil. When one of the clamping teeth retracts into the sliding seat, the push rod connected to it will also extend into the second chamber, that is, squeeze the hydraulic oil in the second chamber. Through pressure transmission, the other clamping tooth will be pushed out of the sliding seat. The top surface of the sliding seat has an installation groove, and a transverse partition is provided in the installation groove. The transverse partition divides the space into a first chamber located above the transverse partition and a second chamber located below the transverse partition. The two clamping teeth are slidably installed in the first chamber. The transverse partition has sliding holes that are opposite to the lower ends of the two clamping teeth. Both of the clamping teeth are connected to push rods at their lower ends. The push rods pass through the sliding holes and extend into the second chamber. The support spring is located in the second chamber, and its upper and lower ends abut against the ends of the push rods and the bottom of the second chamber, respectively. The second chamber contains hydraulic oil, and the push rod and the sliding hole are sealed together.

2. The finger clamp according to claim 1, characterized in that: A limit block is provided at the end of the push rod away from the clamping teeth, and the inner diameter of the sliding hole is smaller than the outer diameter of the limit block.

3. The finger clamp according to claim 2, characterized in that: The limiting block has a slot at one end facing the support spring, and the end of the support spring is inserted into the slot.

4. A positioning and clamping device for bearing machining and grinding includes a plurality of clamping fingers as described in any one of claims 1 to 3, characterized in that: It includes a circular fixed plate, on which multiple strip-shaped guide grooves are formed. The multiple guide grooves extend along the radial direction of the fixed plate and are evenly distributed along the circumference of the fixed plate. Multiple sliding seats correspond one-to-one with the multiple guide grooves and are respectively fitted into the multiple guide grooves. The top of the sliding seat is located inside the guide groove, and the upper end of the clamping teeth protrudes outside the guide groove; A driving unit is provided below the fixed plate, which is used to drive multiple sliding seats to slide synchronously and in the same direction along the guide groove.

5. The positioning and clamping device for bearing machining and grinding according to claim 4, characterized in that: The sliding seat has a planar structure on both sides of the inner wall of the guide groove.

6. The positioning and clamping device for bearing machining and grinding according to claim 5, characterized in that: The driving unit includes a circular rotating disk with a pushing groove that is one-to-one with a plurality of guide grooves. The plurality of pushing grooves are evenly distributed along the circumference of the rotating disk, and one end of the pushing groove is close to the center of the rotating disk and overlaps with the inward end of the guide groove. The other end of the pushing groove extends toward the outer edge of the rotating disk and the extending direction intersects with the radial direction of the rotating disk. The lower end of the sliding seat is slidably connected to the push groove, and a connecting seat is connected to the center of the bottom surface of the rotating disk.

7. The positioning and clamping device for bearing machining and grinding according to claim 6, characterized in that: The sliding seat has a pad protruding outwards in the middle, and the pad is located between the rotating disk and the fixed disk. The width of the pushing groove and the guide groove is smaller than the width of the pad.

8. The positioning and clamping device for bearing machining and grinding according to claim 7, characterized in that: The sliding seat has support plates on both sides of the guide groove. The support plates are in contact with the pad, and a support rib is provided between the pad and the side wall of the sliding seat.

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