Surface treatment device for precision bearing production

Abstract

The utility model discloses a surface treatment device for precision bearing production, which comprises a base box, two groups of mounting plates are movably arranged at the top of the base box, the opposite sides of the mounting plates are rotatably connected with clamping seats through bearings, the opposite sides of the mounting plates are connected with supporting shafts through the clamping seats in a clamping manner, and the supporting shafts are used for supporting bearing blanks. The bearing blank is clamped and limited through the supporting shaft, meanwhile, it cannot be guaranteed that a center shaft of the bearing blank and the supporting shaft are coaxial, then the worm is rotated, the movable base is deflected through the fan-shaped worm wheel, the bolt rod type abrasive paper base is deflected to the supporting shaft, the polishing abrasive paper is attached to the outer side of the bearing blank, and the polishing abrasive paper is attached to the outer side of the bearing blank along with rotation of the supporting shaft. The polishing abrasive paper is in flexible connection with the bearing blank body, the contact tension degree of the polishing abrasive paper and the bearing blank body can be automatically adjusted, so that the surface of the bearing blank body is uniformly polished, and the problem that the precision of the bearing blank body is low due to the fact that a center shaft of the bearing blank body is not coaxial with a rotating shaft in a traditional polishing mode is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a surface treatment device for precision bearing production. Background Art

[0002] A bearing is a mechanical element that limits relative motion to a desired range of motion and reduces friction between moving parts. Bearings are designed to provide free linear motion or free rotation about a fixed axis, or to prevent motion by controlling the vector of the normal force acting on the moving part.

[0003] In order to improve the accuracy of bearings, it is necessary to finely grind the surface of the bearing rough blank after the bearing rough blank is processed. The traditional grinding method adopts a hard contact method, that is, the distance between the grinding equipment and the bearing rough blank remains unchanged, and one group is rotated to grind the bearing rough blank. The advantage of this grinding method is that the distance from the rotating axis to the bearing surface can be controlled to remain unchanged. However, in actual operation, the bearing and the rotating axis cannot be coaxial, which will cause the bearing rough blank to rotate relatively eccentrically. When this grinding method is used for processing, the distance between the surface of the bearing rough blank and the center will be different, affecting the accuracy of the bearing. Utility Model Content

[0004] The purpose of the present utility model is to provide a surface treatment device for precision bearing production, in which the bearing blank is installed through a support shaft, and then the fan-shaped worm gear is driven to rotate by a worm, the movable seat and the bolt rod are offset, so that the sandpaper seat is close to the support shaft, and the grinding sandpaper is used to contact the bearing blank. Then, with the cooperation of the reciprocating translation component and the rotating motor, the bearing blank is continuously polished back and forth. Since the bearing blank and the grinding sandpaper are in soft contact, the problem of reduced grinding accuracy caused by the center of the bearing blank being not in line with the support shaft can be effectively avoided, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a surface treatment device for precision bearing production, comprising a base box, wherein two sets of mounting plates are movably provided on the top of the base box, wherein the opposing sides of the mounting plates are rotatably connected to a clamping seat via a bearing, and the opposing sides of the mounting plates are clamped to a support shaft for supporting a bearing embryo via the clamping seat, and a rotating motor is fixed to the outer side of one set of the mounting plates, and the output shaft of the rotating motor is fixedly connected to the clamping seat;

[0006] Also included is a clamping assembly for adjusting the positions of the two sets of mounting plates;

[0007] The front of the base box is fixed with a fixed frame, and a mounting seat is movably provided on the top of the fixed frame. The inner cavity of the fixed frame is provided with a reciprocating translation component for moving the mounting seat. The inner cavity of the mounting seat is rotatably connected to a movable seat through a movable shaft. A fan-shaped worm gear is fixed to the outer side of the movable seat, and a worm engaged with the fan-shaped worm gear is rotatably connected to the inner cavity of the mounting seat through a bearing. An upwardly extending bolt rod is fixed to the outer side of the movable seat, and a sandpaper seat is installed on the bolt rod, and different grinding sandpapers are installed on the sandpaper seat.

[0008] Preferably, the clamping assembly includes pulleys that rotate on both sides of the inner cavity of the base box through bearings, the outer sides of the pulleys are connected to the connecting belt for transmission, a driving motor is fixed to the bottom of the base box, the output shaft of the driving motor passes through the inner cavity of the base box and is rotatably connected to a group of pulleys, and connecting rods are respectively fixed on the outer sides of the two groups of mounting plates, and the ends of the connecting rods away from the mounting plates pass through the inner cavity of the base box and are fixedly connected to the connecting belt.

[0009] Preferably, the reciprocating translation assembly includes a forward and reverse motor fixed to one side of the inner cavity of the fixed frame, the output shaft of the forward and reverse motor is fixed with a screw, the other end of the screw rotates in the inner cavity of the fixed frame through a bearing, the outer side of the screw is threadedly connected to a movable block that fits the inner wall of the fixed frame, and the movable block extends upward and is fixedly connected to the bottom of the mounting seat.

[0010] Preferably, the bolt rod is respectively fixedly connected with a fixed clamping seat and a movable clamping seat, the sandpaper seat is located between the fixed clamping seat and the movable clamping seat, four groups of limit blocks are fixed on the side facing the fixed clamping seat and the movable clamping seat, the top and bottom of the sandpaper seat are provided with limit grooves that are engaged with the limit blocks, the two ends of the grinding sandpaper are located in the limit grooves, the outer side of the bolt rod is threadedly connected with a fastening nut, and the fastening nut is fitted on the side of the movable clamping seat away from the limit block.

[0011] Preferably, both ends of the support shaft are provided with screw threads, and both ends of the support shaft are threadedly connected with limit plates for clamping the bearing embryo.

[0012] Preferably, a through hole is provided on the mounting plate, and a limit frame is slidably provided in the through hole, and the limit frame is fixed to the top of the base box.

[0013] Preferably, recessed portions are provided on all four sides of the sandpaper holder, and the sandpaper is located outside the recessed portions.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model clamps and limits the bearing blank by the support shaft, but cannot ensure that the central axis of the bearing blank is coaxial with the support shaft. Then, the worm is rotated to deflect the movable seat through the fan-shaped worm gear, and the bolt rod type sandpaper seat is deflected toward the support shaft so that the grinding sandpaper is attached to the outside of the bearing blank. As the support shaft rotates, the grinding sandpaper is softly connected to the bearing blank, and the tension of the contact between the grinding sandpaper and the bearing blank can be automatically adjusted, so that the surface of the bearing blank is evenly polished, which solves the problem of low bearing blank precision caused by the traditional grinding method due to the non-coaxiality of the central axis of the bearing blank and the rotation axis.

[0016] 2. The utility model can not only limit the two ends of the sandpaper for grinding through the clamping connection between the limit block and the limit groove, but also ensure the stability of the sandpaper seat to prevent the sandpaper seat from rotating outside the bolt rod and affecting the grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the mounting plate and the support shaft of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the reciprocating translation assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the split three-dimensional structure of the bolt rod and the sandpaper holder of the utility model.

[0022] Numbers in the figure: 1. Base box; 2. Mounting plate; 3. Clamp; 4. Support shaft; 5. Rotating motor; 6. Clamping assembly; 61. Pulley; 62. Connecting belt; 63. Driving motor; 64. Connecting rod; 7. Fixed frame; 8. Mounting seat; 9. Reciprocating translation assembly; 91. Forward and reverse motor; 92. Screw; 93. Movable block; 10. Movable seat; 11. Fan-shaped worm gear; 12. Worm; 13. Bolt rod; 14. Sandpaper seat; 15. Grinding sandpaper; 16. Fixed clamping seat; 17. Movable clamping seat; 18. Limit block; 19. Limit slot; 20. Fastening nut; 21. Limit plate; 22. Limit frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides Figures 1 to 5 The surface treatment device for precision bearing production shown in the figure includes a base box 1. Two sets of mounting plates 2 are movably provided on the top of the base box 1. The facing sides of the mounting plates 2 are rotatably connected to the clamping seat 3 through the bearing. The facing sides of the mounting plates 2 are clamped to the support shaft 4 for supporting the bearing embryo through the clamping seat 3. A rotating motor 5 is fixed to the outer side of one set of mounting plates 2. The output shaft of the rotating motor 5 is fixedly connected to the clamping seat 3.

[0025] It also includes a clamping assembly 6 for adjusting the positions of the two sets of mounting plates 2;

[0026] The front of the base box 1 is fixed with a fixed frame 7, and a mounting seat 8 is movably provided on the top of the fixed frame 7. The inner cavity of the fixed frame 7 is provided with a reciprocating translation component 9 for moving the mounting seat 8. The inner cavity of the mounting seat 8 is rotatably connected to a movable seat 10 through a movable shaft. A fan-shaped worm gear 11 is fixed to the outer side of the movable seat 10. The inner cavity of the mounting seat 8 is rotatably connected to a worm 12 engaged with the fan-shaped worm gear 11 through a bearing. An upwardly extending bolt rod 13 is fixed to the outer side of the movable seat 10, and a sandpaper seat 14 is installed on the bolt rod 13. Different grinding sandpapers 15 are installed on the sandpaper seat 14;

[0027] The bearing blank is clamped and limited by the support shaft 4, but it cannot be guaranteed that the central axis of the bearing blank is coaxial with the support shaft 4. Then, the worm 12 is rotated, and the movable seat 10 is deflected by the fan-shaped worm gear 11. The bolt rod 13-type sandpaper seat 14 is biased toward the support shaft 4, so that the grinding sandpaper 15 is attached to the outside of the bearing blank. As the support shaft 4 rotates, the grinding sandpaper 15 is softly connected to the bearing blank, and the tension of the contact between the grinding sandpaper 15 and the bearing blank can be automatically adjusted, so that the surface of the bearing blank is evenly polished, which solves the problem of low bearing blank accuracy caused by the traditional grinding method due to the non-coaxiality of the central axis of the bearing blank and the rotation axis.

[0028] The clamping assembly 6 includes pulleys 61 that rotate on both sides of the inner cavity of the base box 1 through bearings. The outer side of the pulley 61 is connected to the connecting belt 62 for transmission. A driving motor 63 is fixed to the bottom of the base box 1. The output shaft of the driving motor 63 passes through the inner cavity of the base box 1 and is rotatably connected to a group of pulleys 61. Connecting rods 64 are fixed to the outer sides of the two groups of mounting plates 2 respectively. The end of the connecting rod 64 away from the mounting plate 2 passes through the inner cavity of the base box 1 and is fixedly connected to the connecting belt 62. A group of pulleys 61 is driven to rotate by the driving motor 63, and then the connecting belt 62 is driven to rotate by the other group of pulleys 61. Then the outer side of the connecting belt 62 is connected to the two groups of mounting plates 2 through the connecting rod 64. Driven by the connecting belt 62, the two groups of mounting plates 2 move toward each other, so that the support shaft 4 can be clamped and fixed.

[0029] The reciprocating translation assembly 9 includes a forward and reverse motor 91 fixed to one side of the inner cavity of the fixed frame 7. The output shaft of the forward and reverse motor 91 is fixed with a screw 92. The other end of the screw 92 rotates in the inner cavity of the fixed frame 7 through a bearing. The outer side of the screw 92 is threadedly connected to a movable block 93 that fits the inner wall of the fixed frame 7. The movable block 93 extends upward and is fixedly connected to the bottom of the mounting seat 8. The screw 92 is driven to rotate by the forward and reverse motor 91, and then the movable block 93 is driven to reciprocate inside the fixed frame 7. At the same time, the movable block 93 can drive the mounting seat 8 to move synchronously, which is convenient for repeated polishing of the bearing blank on the support shaft 4.

[0030] The bolt rod 13 is respectively fixedly connected with a fixed clamping seat 16 and a movable clamping seat 17. The sandpaper seat 14 is located between the fixed clamping seat 16 and the movable clamping seat 17. Four groups of limit blocks 18 are fixed on the side facing the fixed clamping seat 16 and the movable clamping seat 17. The top and bottom of the sandpaper seat 14 are provided with limit grooves 19 that are engaged with the limit blocks 18. The two ends of the sanding sandpaper 15 are located in the limit grooves 19. The outer side of the bolt rod 13 is threadedly connected with a fastening nut 20, which is fitted on the side of the movable clamping seat 17 away from the limit block 18. The sandpaper seat 14 can be limited by the fixed clamping seat 16 and the movable clamping seat 17. At the same time, the cooperation of the limit block 18 and the limit groove 19 makes it easy to fix the sanding sandpaper 15 and prevent the sandpaper seat 14 from rotating on the bolt rod 13.

[0031] Both ends of the support shaft 4 are provided with screw threads, and the two ends of the support shaft 4 are threadedly connected with limit plates 21 for clamping the bearing embryo. By threading the two ends of the support shaft 4 with the limit plates 21, the bearing embryo on the support shaft 4 can be clamped and fixed, so that the bearing embryo and the support shaft 4 rotate synchronously.

[0032] A through hole is provided on the mounting plate 2, and a limit frame 22 is slidingly set in the through hole. The limit frame 22 is fixed to the top of the base box 1. Through the cooperation of the limit frame 22, the mounting plate 2 can be conveniently limited to prevent the mounting plate 2 from shaking during movement and affecting the stability of the support shaft 4.

[0033] The sandpaper seat 14 is provided with recessed parts on all sides, and the sandpaper 15 is located on the outside of the recessed parts. By providing the recessed parts on the sandpaper seat 14, after adjusting the sandpaper seat 14 to be close to the bearing blank, the sandpaper 15 has a certain buffer space and automatically adjusts the tightness.

[0034] When in use, the bearing embryo is sequentially sleeved on the support shaft 4, and then the limit plates 21 are threadedly connected to the two ends of the support shaft 4 to clamp the bearing embryo, and then the support shaft 4 is placed between the mounting plates 2, and the driving motor 63 is started to drive the connecting belt 62 to rotate through the pulley 61, and then the connecting belt 62 drives the two sets of mounting plates 2 to move toward the middle through the connecting rod 64 and uses the card seat 3 to clamp the support shaft 4, start the rotating motor 5, and the rotating motor 5 drives the support shaft 4 to rotate through the card seat 3, and then the sandpaper 15 is installed on the sandpaper seat 1 4, and then the fixed clamping seat 16 and the movable clamping seat 17 drive the limit block 18 and the limit groove 19 to install the grinding sandpaper 15, and then use the fastening nut 20 to fix the movable clamping seat 17 and the sandpaper seat 14, rotate the worm 12, and drive the movable seat 10 to deflect through the fan-shaped worm gear 11, so that the sandpaper seat 14 is close to the support shaft 4, and then the grinding sandpaper 15 is attached to the surface of the bearing embryo, and at the same time, the forward and reverse motor 91 is started, and the mounting seat 8 is driven to move back and forth on the top of the fixed frame 7 through the screw 92 and the movable block 93 to repeatedly grind the bearing embryo.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for precision bearing production, comprising a base box (1), characterized in that: Two groups of mounting plates (2) are movably provided on the top of the base box (1); opposite sides of the mounting plates (2) are rotatably connected to a clamping seat (3) via a bearing; opposite sides of the mounting plates (2) are clamped to a support shaft (4) for supporting the bearing embryo via the clamping seat (3); a rotating motor (5) is fixed to the outer side of one group of the mounting plates (2); and the output shaft of the rotating motor (5) is fixedly connected to the clamping seat (3); It also includes a clamping assembly (6) for adjusting the positions of the two sets of mounting plates (2); The front of the base box (1) is fixed with a fixed frame (7), the top of the fixed frame (7) is movably provided with a mounting seat (8), the inner cavity of the fixed frame (7) is provided with a reciprocating translation component (9) for moving the mounting seat (8), the inner cavity of the mounting seat (8) is rotatably connected to a movable seat (10) through a movable shaft, a fan-shaped worm gear (11) is fixed to the outer side of the movable seat (10), the inner cavity of the mounting seat (8) is rotatably connected to a worm (12) meshing with the fan-shaped worm gear (11) through a bearing, an upwardly extending bolt rod (13) is fixed to the outer side of the movable seat (10), a sandpaper seat (14) is installed on the bolt rod (13), and different grinding sandpapers (15) are installed on the sandpaper seat (14).

2. A surface treatment device for precision bearing production according to claim 1, characterized in that: The clamping assembly (6) includes pulleys (61) that rotate on both sides of the inner cavity of the base box (1) through bearings, and the outer sides of the pulleys (61) are connected to the connecting belt (62) for transmission. A driving motor (63) is fixed to the bottom of the base box (1), and the output shaft of the driving motor (63) passes through the inner cavity of the base box (1) and is rotationally connected to a group of pulleys (61). Connecting rods (64) are respectively fixed to the outer sides of the two groups of mounting plates (2), and the ends of the connecting rods (64) away from the mounting plates (2) pass through the inner cavity of the base box (1) and are fixedly connected to the connecting belt (62).

3. The surface treatment device for precision bearing production according to claim 1, characterized in that: The reciprocating translation assembly (9) comprises a forward and reverse motor (91) fixed to one side of the inner cavity of the fixed frame (7); a screw (92) is fixed to the output shaft of the forward and reverse motor (91); the other end of the screw (92) rotates in the inner cavity of the fixed frame (7) through a bearing; the outer side of the screw (92) is threadedly connected to a movable block (93) affixed to the inner wall of the fixed frame (7); the movable block (93) extends upward and is fixedly connected to the bottom of the mounting seat (8).

4. The surface treatment device for precision bearing production according to claim 1, characterized in that: The bolt rod (13) is fixedly connected with a fixed clamping seat (16) and a movable clamping seat (17) respectively. The sandpaper seat (14) is located between the fixed clamping seat (16) and the movable clamping seat (17). Four groups of limit blocks (18) are fixed on the side of the fixed clamping seat (16) facing the movable clamping seat (17). The top and bottom of the sandpaper seat (14) are both provided with limit grooves (19) that are engaged with the limit blocks (18). The two ends of the grinding sandpaper (15) are located in the limit grooves (19). The outer side of the bolt rod (13) is threadedly connected with a fastening nut (20). The fastening nut (20) is attached to the side of the movable clamping seat (17) away from the limit block (18).

5. The surface treatment device for precision bearing production according to claim 1, characterized in that: Both ends of the support shaft (4) are provided with screw threads, and both ends of the support shaft (4) are threadedly connected to limit plates (21) for clamping the bearing embryo.

6. The surface treatment device for precision bearing production according to claim 1, characterized in that: A through hole is provided on the mounting plate (2), and a limiting frame (22) is slidably provided in the through hole. The limiting frame (22) is fixed to the top of the base box (1).

7. The surface treatment device for precision bearing production according to claim 1, characterized in that: The sandpaper holder (14) is provided with recessed parts on all sides, and the sandpaper (15) is located outside the recessed parts.

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