Positioning device for ball screw machining

Abstract

The invention discloses a positioning device for ball screw machining, and particularly relates to the technical field of ball screw machining, the positioning device comprises a clamping pipe, a positioning device and a positioning device, and a ball screw is arranged at one end of the clamping pipe; a fixing plate is fixedly arranged at the bottom end of the hydraulic cylinder, a mounting rod is fixedly arranged in the middle of the bottom end of the fixing plate, and a grinding tool is mounted at the bottom end of the mounting rod; two positioning rods are arranged at the bottom end of the movable plate, adjusting mechanisms are arranged at the top ends of the positioning rods, rotating grooves are formed in the bottom ends of the positioning rods, and rotating balls are arranged in the rotating grooves. A grinding tool is positioned through the two positioning rods, so that the grinding tool can be directly moved into a ball groove in the ball screw, then the ball groove is conveniently ground, the grinding efficiency of the ball groove in the ball screw is effectively improved, the positions of the two positioning rods can be adjusted, and the grinding tool is convenient to use. And therefore, the device can be suitable for grinding ball grooves with different intervals, and the applicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of ball screw processing, and particularly relates to a positioning device for ball screw processing. Background Art

[0002] A ball screw is an ideal product for converting rotary motion into linear motion or vice versa. It is the most commonly used transmission element in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion or convert torque into axial repetitive force. Due to its very small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. When a ball screw is processed, the ball groove needs to be ground to ensure its smoothness.

[0003] Currently, when grinding the inside of the groove of a ball screw, the grinding tool needs to accurately align with the inside of the groove of the ball screw. This requires accurate positioning when the ball screw is clamped and fixed, so that the grinding tool can align with the groove on the screw. However, the positioning on the existing processing structures is not fast and convenient enough, and it is often necessary to repeatedly adjust the clamping and fixing position at the end of the ball screw, which affects the processing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning device for ball screw processing to solve the above-mentioned deficiencies in the technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A positioning device for ball screw processing, comprising:

[0006] A clamping tube, one end of the clamping tube is provided with a ball screw, and one end of the ball screw extends into the interior of the clamping tube;

[0007] A hydraulic cylinder, the bottom end of the hydraulic cylinder is fixedly provided with a fixing plate, the middle of the bottom end of the fixing plate is fixedly provided with a mounting rod, and a grinding tool is installed at the bottom end of the mounting rod;

[0008] A movable plate, the movable plate is arranged at the bottom of the fixing plate, the mounting rod penetrates through the middle of the movable plate, two positioning rods are arranged at the bottom end of the movable plate, the two positioning rods are respectively arranged on both sides of the grinding tool, an adjusting mechanism is arranged at the top end of the positioning rod, a rotating groove is opened at the bottom end of the positioning rod, and a rotating ball is arranged inside the rotating groove.

[0009] Preferably, the adjusting mechanism includes two adjusting grooves formed in the bottom of the movable plate. An adjusting block is arranged inside the adjusting groove. The top ends of the two positioning rods are respectively fixedly connected to the bottom end of the adjusting block. Limiting movable grooves are formed in the front and rear walls inside the adjusting groove. Limiting movable blocks are fixedly arranged at the front and rear ends of the adjusting block. The limiting movable blocks are arranged inside the limiting movable grooves. A bidirectional lead screw is rotatably connected inside two adjacent limiting movable grooves on the left and right. The two ends of the bidirectional lead screw respectively pass through the two limiting movable blocks. The two ends of the bidirectional lead screw are in threaded connection with the two limiting movable blocks and the thread directions are opposite. One end of one of the bidirectional lead screws extends to one side of the movable plate and is fixedly provided with a turning handle, which is convenient for adjusting the positions of the two adjusting blocks and the positioning rods.

[0010] Preferably, a first synchronous pulley is fixedly arranged on the outer part of one end of the bidirectional lead screw. The first synchronous pulley is arranged between the movable plate and the turning handle. The two first synchronous pulleys are connected by a first synchronous belt, which is convenient for the connection and transmission between the two bidirectional lead screws.

[0011] Preferably, an indicating block is fixedly arranged on the outer side of the limiting movable block. Scale lines are processed at the front and rear ends of the movable plate. The scale lines are arranged at the end of the indicating block, which is convenient for intuitively indicating the distance between the positioning rod and the grinding tool.

[0012] Preferably, two guide rods are fixedly arranged at the top end of the movable plate. The two guide rods are respectively arranged on both sides of the mounting rod. The top ends of the guide rods penetrate through the fixing plate and extend to the top of the fixing plate. A limiting plate is fixedly arranged at the top ends of the guide rods. Springs are sleeved on the outer ends of the guide rods. The two ends of the springs are respectively fixedly connected to the bottom end of the fixing plate and the top end of the movable plate, which is convenient for the up and down movement and automatic reset of the movable plate.

[0013] Preferably, two arc-shaped clamping plates are arranged inside the clamping tube. The two arc-shaped clamping plates are both arranged at the outer end of the end of the ball screw. A plurality of anti-slip grooves are formed at the inner end of the arc-shaped clamping plate. Two connecting plates are integrally connected to the outer end of the arc-shaped clamping plate. One end of the two connecting plates penetrates through the outer end of the clamping tube and extends to the outside of the clamping tube, which is convenient for clamping and fixing the end of the ball screw.

[0014] Preferably, an adjusting plate is fixedly arranged at one end of the two connecting plates. A threaded rod is rotatably connected to the front and rear sides of the outer end of the clamping tube. One end of the threaded rod penetrates through the adjusting plate and extends to the outside of the adjusting plate. The threaded rod is in threaded connection with the adjusting plate. A hexagonal block is fixedly arranged at one end of the threaded rod, which is convenient for adjusting the positions of the two arc-shaped clamping plates.

[0015] Preferably, a mounting seat is integrally connected to the bottom of the outer end of the clamping tube. A rotating rod is arranged on the mounting seat. The rotating rod penetrates through the mounting seat and is rotatably connected to the mounting seat, which is convenient for synchronously connecting and driving the two threaded rods.

[0016] Preferably, a second synchronous pulley is fixedly provided on the outer sides of both ends of the rotating rod and one end of the threaded rod. The second synchronous pulley is arranged inside the hexagonal block, and two adjacent second synchronous pulleys up and down are connected by a second synchronous belt, which is convenient for the connection and transmission between the two threaded rods and the rotating rod.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0018] 1. The grinding tool is positioned by two positioning rods, so that the grinding tool can be directly moved into the ball groove on the ball screw, which is convenient for grinding the ball groove, effectively improving the grinding efficiency of the ball groove on the ball screw. Moreover, the positions of the two positioning rods can be adjusted, so that it can be applicable to the grinding of ball grooves with different spacings, and the applicability is relatively high;

[0019] 2. By rotating the hexagonal block to synchronously rotate the two threaded rods, the positions of the two arc-shaped clamping plates can be synchronously adjusted. The two arc-shaped clamping plates can clamp and fix the end of the ball screw on the central axis of the clamping pipe, making the fixation of the ball screw faster and more convenient, and the efficiency of positioning and clamping fixation is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a three-dimensional structure diagram of the hydraulic cylinder, fixed plate and movable plate of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional sectional structure of the fixed plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional sectional structure of the movable plate of the present invention Figure 1 ;

[0025] Figure 5 It is a schematic diagram of the three-dimensional sectional structure of the movable plate of the present invention Figure 2 ;

[0026] Figure 6 It is a schematic diagram of the three-dimensional sectional structure of the local part of the positioning rod of the present invention;

[0027] Figure 7Schematic diagram of the three-dimensional sectional structure of the clamping tube of the present invention;

[0028] Figure 8 Schematic diagram of the three-dimensional structure of the arc-shaped clamping plate, connecting plate and adjusting plate of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. Clamping tube; 2. Ball screw; 3. Hydraulic cylinder; 4. Fixed plate; 5. Mounting rod; 6. Grinding tool; 7. Movable plate; 8. Positioning rod; 9. Rotating groove; 10. Rotating bead; 11. Adjusting groove; 12. Adjusting block; 13. Limiting movable groove; 14. Limiting movable block; 15. Bi-directional screw; 16. Rotating handle; 17. First synchronous pulley; 18. First synchronous belt; 19. Indicator block; 20. Scale line; 21. Guide rod; 22. Limiting plate; 23. Spring; 24. Arc-shaped clamping plate; 25. Anti-slip groove; 26. Connecting plate; 27. Adjusting plate; 28. Threaded rod; 29. Hexagonal block; 30. Mounting seat; 31. Rotating rod; 32. Second synchronous pulley; 33. Second synchronous belt. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0032] The present invention provides a positioning device for ball screw processing as shown in Figures 1 to 6 and includes:

[0033] A clamping tube 1, with a ball screw 2 provided at one end of the clamping tube 1, and one end of the ball screw 2 extending into the interior of the clamping tube 1;

[0034] A hydraulic cylinder 3, with a fixed plate 4 fixedly provided at the bottom end of the hydraulic cylinder 3, a mounting rod 5 fixedly provided in the middle of the bottom end of the fixed plate 4, and a grinding tool 6 mounted at the bottom end of the mounting rod 5;

[0035] A movable plate 7, arranged at the bottom of the fixed plate 4, the mounting rod 5 passing through the middle of the movable plate 7, two positioning rods 8 provided at the bottom end of the movable plate 7, the two positioning rods 8 respectively arranged on both sides of the grinding tool 6, an adjusting mechanism provided at the top end of the positioning rod 8, and a rotating groove 9 opened at the bottom end of the positioning rod 8, with a rotating bead 10 provided inside the rotating groove 9.

[0036] The adjusting mechanism includes two adjusting grooves 11 formed at the bottom of the movable plate 7. An adjusting block 12 is arranged inside the adjusting groove 11. The top ends of the two positioning rods 8 are respectively fixedly connected to the bottom end of the adjusting block 12. Limiting movable grooves 13 are formed on the front and rear walls inside the adjusting groove 11. Limiting movable blocks 14 are fixedly arranged at the front and rear ends of the adjusting block 12. The limiting movable blocks 14 are arranged inside the limiting movable grooves 13. A bidirectional lead screw 15 is rotatably connected inside the left and right adjacent two limiting movable grooves 13. The two ends of the bidirectional lead screw 15 respectively pass through the two limiting movable blocks 14. The two ends of the bidirectional lead screw 15 are threadedly connected to the two limiting movable blocks 14 respectively and the thread directions are opposite. One end of one bidirectional lead screw 15 extends to one side of the movable plate 7 and is fixedly provided with a turning handle 16. A first synchronous pulley 17 is fixedly arranged on the outer part of one end of the bidirectional lead screw 15. The first synchronous pulley 17 is arranged between the movable plate 7 and the turning handle 16. The two first synchronous pulleys 17 are connected by a first synchronous belt 18.

[0037] An indicating block 19 is fixedly arranged on the outer side of the limiting movable block 14. Scale lines 20 are machined at the front and rear ends of the movable plate 7. The scale lines 20 are arranged at the end of the indicating block 19.

[0038] Two guide rods 21 are fixedly arranged at the top end of the movable plate 7. The two guide rods 21 are respectively arranged on both sides of the mounting rod 5. The top ends of the guide rods 21 penetrate through the fixing plate 4 and extend to the top of the fixing plate 4. A limiting plate 22 is fixedly arranged at the top end of the guide rods 21. A spring 23 is sleeved on the outer end of the guide rod 21. The two ends of the spring 23 are respectively fixedly connected to the bottom end of the fixing plate 4 and the top end of the movable plate 7.

[0039] According to the distance between adjacent grooves on the ball screw 2, rotate the turning handle 16. The turning handle 16 drives a two-way screw rod 15 to rotate. The two-way screw rod 15 drives another two-way screw rod 15 to rotate through two first synchronous pulleys 17 and a first synchronous belt 18. Since the two-way screw rod 15 is threadedly connected to two limit movable blocks 14, the two limit movable blocks 14 approach or move away from each other as the two-way screw rod 15 rotates. The limit movable blocks 14 drive two adjusting blocks 12 to approach or move away from each other. The two adjusting blocks 12 drive two positioning rods 8 to approach or move away from each other. When the two limit movable blocks 14 move, they drive the indicating blocks 19 thereon to move. The indicating blocks 19 indicate the scale lines 20. In this way, the distance between the two positioning rods 8 can be directly observed, and at the same time, the distance between the positioning rod 8 and the grinding tool 6 can be deduced. The distance between the positioning rod 8 and the grinding tool 6 is the same as the distance between two adjacent grooves on the ball screw 2. Place the rotating beads 10 at the bottom ends of the two positioning rods 8 into two spaced grooves on the ball screw 2. At this time, the hydraulic cylinder 3 drives the fixing plate 4 to move downward. The fixing plate 4 drives the mounting rod 5 and the grinding tool 6 to move downward. The bottom end of the grinding tool 6 will enter the ball groove between the two positioning rods 8. At this time, the two positioning rods 8 will drive the movable plate 7 to compress the spring 23. When the ball screw 2 rotates, the grinding tool 6 will perform grinding on the ball groove.

[0040] The present invention positions the grinding tool 6 through two positioning rods 8, enabling the grinding tool 6 to directly move into the ball groove on the ball screw 2, thereby facilitating the grinding of the ball groove, effectively improving the grinding efficiency of the ball groove on the ball screw 2. Moreover, the positions of the two positioning rods 8 can be adjusted, and thus it can be applied to the grinding of ball grooves with different spacings, with high applicability. This embodiment specifically solves the problem existing in the prior art that when grinding the groove inside the ball screw, the grinding tool needs to accurately align with the groove inside the ball screw. This requires accurate positioning when clamping and fixing the ball screw so that the grinding tool can align with the groove on the screw. However, the positioning on the existing processing structure is not fast and convenient enough, and it often requires repeatedly adjusting the clamping and fixing position at the end of the ball screw, affecting the processing efficiency.

[0041] The present invention provides as Figure 1 and Figures 7 to 8A positioning device for processing a ball screw is shown. Inside the clamping tube 1, there are two arc-shaped clamping plates 24. Both of the two arc-shaped clamping plates 24 are arranged at the outer end of the end of the ball screw 2. A plurality of anti-slip grooves 25 are formed at the inner end of the arc-shaped clamping plate 24. At the outer end of the arc-shaped clamping plate 24, two connecting plates 26 are integrally connected. One end of the two connecting plates 26 penetrates through the outer end of the clamping tube 1 and extends to the outside of the clamping tube 1. A regulating plate 27 is fixedly arranged at one end of the two connecting plates 26. At the front and rear sides of the outer end of the clamping tube 1, a threaded rod 28 is rotatably connected. One end of the threaded rod 28 passes through the regulating plate 27 and extends to the outside of the regulating plate 27. The threaded rod 28 is threadedly connected with the regulating plate 27. A hexagonal block 29 is fixedly arranged at one end of the threaded rod 28.

[0042] At the bottom of the outer end of the clamping tube 1, a mounting seat 30 is integrally connected. A rotating rod 31 is arranged on the mounting seat 30. The rotating rod 31 passes through the mounting seat 30 and is rotatably connected with the mounting seat 30. At both ends of the rotating rod 31 and the outside of one end of the threaded rod 28, a second synchronous pulley 32 is fixedly arranged. The second synchronous pulley 32 is arranged inside the hexagonal block 29. Between two adjacent second synchronous pulleys 32 up and down, they are connected by a second synchronous belt 33.

[0043] Insert the end of the ball screw 2 into the inside of the clamping tube 1. After determining the position of the ball screw 2, use a hexagonal wrench to drive the hexagonal block 29 to rotate. The hexagonal block 29 drives a threaded rod 28 to rotate. This threaded rod 28 drives the rotating rod 31 to rotate through two second synchronous pulleys 32 and a second synchronous belt 33. The rotating rod 31 drives another threaded rod 28 to rotate through another two second synchronous pulleys 32 and the second synchronous belt 33. Since the threaded rod 28 is threadedly connected with the regulating plate 27, the two regulating plates 27 move towards the direction close to the clamping tube 1 as the two threaded rods 28 rotate. The regulating plate 27 drives the two connecting plates 26 and the arc-shaped clamping plates 24 to move. The two arc-shaped clamping plates 24 will clamp and fix the end of the ball screw 2. In the present invention, by rotating the hexagonal block 29, the two threaded rods 28 are rotated synchronously, and then the positions of the two arc-shaped clamping plates 24 can be adjusted synchronously. The two arc-shaped clamping plates 24 can clamp and fix the end of the ball screw 2 on the central axis of the clamping tube 1, making the fixation of the ball screw 2 relatively fast and convenient, and the efficiency of positioning, clamping and fixing is relatively high.

[0044] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A positioning device for ball screw processing, characterized in that: include: A clamping tube (1), wherein one end of the clamping tube (1) is provided with a ball screw (2), and one end of the ball screw (2) extends into the interior of the clamping tube (1); A hydraulic cylinder (3), wherein a fixing plate (4) is fixedly provided at the bottom end of the hydraulic cylinder (3), a mounting rod (5) is fixedly provided at the middle of the bottom end of the fixing plate (4), and a grinding tool (6) is installed at the bottom end of the mounting rod (5); A movable plate (7), wherein the movable plate (7) is arranged at the bottom of the fixed plate (4), the mounting rod (5) passes through the middle of the movable plate (7), two positioning rods (8) are arranged at the bottom end of the movable plate (7), the two positioning rods (8) are respectively arranged on both sides of the grinding tool (6), an adjustment mechanism is arranged at the top end of the positioning rod (8), a rotating groove (9) is opened at the bottom end of the positioning rod (8), and a rotating bead (10) is arranged inside the rotating groove (9).

2. A positioning device for ball screw machining according to claim 1, characterized in that: The adjustment mechanism comprises two adjustment slots (11) provided at the bottom of the movable plate (7), an adjustment block (12) being provided inside the adjustment slots (11), the top ends of the two positioning rods (8) being fixedly connected to the bottom ends of the adjustment blocks (12) respectively, the front and rear walls inside the adjustment slots (11) being provided with limit movable slots (13), the front and rear ends of the adjustment blocks (12) being fixedly provided with limit movable blocks (14), the limit movable blocks (14) being provided inside the limit movable slots (13), two left and right adjacent limit movable slots (13) being rotatably connected with a bidirectional screw rod (15), the two ends of the bidirectional screw rod (15) respectively passing through the two limit movable blocks (14), the two ends of the bidirectional screw rod (15) being connected to the two limit movable blocks (14) by threads and the threads are in opposite directions, one end of one of the bidirectional screw rods (15) extending to one side of the movable plate (7) and being fixedly provided with a turning handle (16).

3. A positioning device for ball screw machining according to claim 2, characterized in that: A first synchronous wheel (17) is fixedly disposed on the outside of one end of the bidirectional screw rod (15); the first synchronous wheel (17) is disposed between the movable plate (7) and the turning handle (16); and the two first synchronous wheels (17) are connected via a first synchronous belt (18).

4. A positioning device for ball screw machining according to claim 2, characterized in that: An indicator block (19) is fixedly arranged outside the limit movable block (14), and scale lines (20) are processed at the front and rear ends of the movable plate (7), and the scale lines (20) are arranged at the ends of the indicator block (19).

5. The positioning device for ball screw machining according to claim 1, characterized in that: Two guide rods (21) are fixedly provided at the top of the movable plate (7), and the two guide rods (21) are respectively arranged on both sides of the mounting rod (5). The top of the guide rod (21) passes through the fixed plate (4) and extends to the top of the fixed plate (4). A limit plate (22) is fixedly provided at the top of the guide rod (21). A spring (23) is sleeved on the outer end of the guide rod (21), and the two ends of the spring (23) are respectively fixedly connected to the bottom end of the fixed plate (4) and the top end of the movable plate (7).

6. A positioning device for ball screw machining according to claim 1, characterized in that: Two arc-shaped clamping plates (24) are arranged inside the clamping tube (1), and the two arc-shaped clamping plates (24) are arranged at the outer ends of the ends of the ball screw (2). The inner ends of the arc-shaped clamping plates (24) are provided with a plurality of anti-slip grooves (25). The outer ends of the arc-shaped clamping plates (24) are integrally connected to two connecting plates (26), and one end of the two connecting plates (26) passes through the outer end of the clamping tube (1) and extends to the outside of the clamping tube (1).

7. A positioning device for ball screw machining according to claim 6, characterized in that: An adjustment plate (27) is fixedly provided at one end of the two connecting plates (26); a threaded rod (28) is rotatably connected to the front and rear sides of the outer ends of the clamping tube (1); one end of the threaded rod (28) passes through the adjustment plate (27) and extends to the outside of the adjustment plate (27); the threaded rod (28) and the adjustment plate (27) are connected by threads; and a hexagonal block (29) is fixedly provided at one end of the threaded rod (28).

8. A positioning device for ball screw machining according to claim 7, characterized in that: The bottom of the outer end of the clamping tube (1) is integrally connected with a mounting seat (30), and the mounting seat (30) is provided with a rotating rod (31), and the rotating rod (31) passes through the mounting seat (30) and is rotatably connected to the mounting seat (30).

9. A positioning device for ball screw machining according to claim 8, characterized in that: A second synchronous wheel (32) is fixedly provided on both ends of the rotating rod (31) and on the outer side of one end of the threaded rod (28); the second synchronous wheel (32) is arranged on the inner side of the hexagonal block (29); and two upper and lower adjacent second synchronous wheels (32) are connected via a second synchronous belt (33).

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