Straightening device of ball screw
By using synchronous overall pressing and friction straightening, the problem of low efficiency and damage to the ball screw in existing ball screw straightening devices is solved, achieving efficient and non-destructive ball screw straightening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG CREATE PRECISION MASCH CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-01
AI Technical Summary
Existing ball screw straightening devices are time-consuming and inefficient when positioning bent screws, and straightening each bending point individually can damage the screw and affect its performance.
The ball screw is fixed by a clamping mechanism using a synchronous overall pressing method. The friction between the ball and the screw is used to achieve slow and continuous straightening. Combined with the reciprocating screw driven by the motor, the slide plate and slide rod are moved to achieve synchronous overall straightening of the ball screw.
This improves the straightening efficiency of the ball screw, reduces damage to the screw, and enhances the practicality and efficiency of the device.
Smart Images

Figure CN224181731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of straightening, specifically to a ball screw straightening device. Background Technology
[0002] In the field of linear guide manufacturing, the lead screw is an essential component. Before it is used, the lead screw is in a slightly bent state and must be straightened by a lead screw straightening device before it can be used.
[0003] For example, Chinese utility model patent CN214022714U discloses a ball screw straightening device, including a device body, a base plate fixedly connected to the bottom of the device body, an adjustment box fixedly connected to the bottom of the base plate, first sliding grooves on the front and rear sides of the inner cavity of the adjustment box, a first slider slidably connected to the inner cavity of the first sliding groove, a lifting plate fixedly connected to the opposite side of the first slider, and a support column fixedly connected to the bottom of the lifting plate. This utility model, through the cooperation of the device body, base plate, adjustment box, first sliding groove, first slider, lifting plate, support column, stabilizing plate, spring, inclined block, screw, threaded sleeve, connecting plate, push plate, roller, driven gear, driving gear, motor, rotating rod, fixed column, and pulley, allows the straightening device to be moved to a designated position and fixed by electronic control. This achieves the purpose of easy movement and fixation of the straightening device, greatly improving the efficiency and mobility of the straightening device, and perfectly meeting the needs of actual operation.
[0004] However, in actual use, the above-mentioned straightening devices are time-consuming when positioning bent ball screws, and require straightening each bent position individually. This not only reduces the straightening efficiency of the ball screw, but also causes some damage to the screw when straightening only one bent point, thus affecting the subsequent use of the ball screw. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a ball screw straightening device that performs synchronous straightening operations by slowly and continuously pressing the ball screw, thereby achieving synchronous overall pressing and straightening of the ball screw, improving the straightening efficiency of the device and enhancing its practicality.
[0006] The present invention relates to a ball screw straightening device, comprising a straightening worktable, a support table, a ball, and two fixed plates. The support table is fixedly installed on the top of the straightening worktable, and the two fixed plates are symmetrically fixedly installed on the top of the straightening worktable. A reciprocating screw is rotatably installed between the two fixed plates, and a power mechanism is provided at one end of each reciprocating screw.
[0007] Two slide rods are symmetrically and rotatably mounted on the outer side wall of the ball. The top of the two slide rods is slidably mounted with a sliding plate through a limiting mechanism. A clamping mechanism is provided at the bottom area of each fixed plate.
[0008] The clamping mechanism includes a slider, a through hole at the bottom of a fixed plate, and a groove on the outer wall of the through hole. The slider is slidably connected to two grooves. A clamping plate is fixedly installed at the bottom of the slider, and a first screw is longitudinally rotatably installed at the top of the slider. The first screw is screwed to the bottom area of the fixed plate. This ball screw straightening device, by rotating the first screw, causes the slider to slide inside the groove. The slider drives the clamping plate to move, thereby fixing and limiting the ball screw. By moving the sliding rod, the ball is simultaneously moved. The ball contacts the ball screw. By rotating the reciprocating screw, the sliding plate, sliding rod, and ball are simultaneously moved. The ball continuously rubs against the ball screw, thereby simultaneously straightening the ball screw. By slowly and continuously pressing the ball screw, the entire ball screw is simultaneously pressed and straightened, improving the straightening efficiency and practicality of the device.
[0009] Preferably, the limiting mechanism includes a second screw, a limiting groove is formed at the bottom end of the slide plate, the limiting groove is slidably connected to the outer side wall of the slide rod, the bottom end of the second screw is rotatably connected to the top end of the slide rod, and the second screw is screwed to the top area of the slide plate. By rotating the second screw, the slide rod is simultaneously driven to slide on the limiting groove. By moving the slide rod, the ball is simultaneously driven to move longitudinally, thereby achieving tight contact with the ball screw at the top of the support platform.
[0010] Preferably, the power mechanism includes a motor, which is fixedly mounted on the outer wall of one of the fixed plates. The output end of the motor is fixedly connected to one end of a reciprocating screw. A first gear is fixedly mounted on the outer wall of the reciprocating screw, and a second gear is rotatably mounted on the outer wall of one of the fixed plates. The second gear meshes with the two first gears. The motor outputs power to the reciprocating screw, and under the transmission of the second gear, the two first gears and the reciprocating screw are synchronously driven to rotate, thereby causing the slide to drive the ball and the slide rod to move laterally.
[0011] Preferably, a top plate is slidably installed on the top of the straightening worktable, and a fifth screw is horizontally screwed onto the top plate. One end of the fifth screw is rotatably connected to the bottom area of the outer side wall of one of the fixed plates. By rotating the fifth screw, the top plate is simultaneously driven to slide on the top of the straightening worktable, thereby limiting the two ends of the ball screw.
[0012] Preferably, a connecting plate is fixedly installed on the outer side wall of each slide rod, and a baffle is fixedly installed on each connecting plate. Each baffle is in contact with the outer side wall of the ball screw. By installing the connecting plate and the baffle, it is convenient to perform longitudinal limiting operation on the straightened ball screw and avoid the ball screw from rotating during straightening.
[0013] Preferably, a support block is fixedly installed at the bottom of the interior of each through hole. By installing the support block, it is convenient to support and fix the ball screw.
[0014] Preferably, a fixing groove is provided on the outer side wall of the ball, which improves the stability when the ball contacts the ball screw.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The ball screw straightening device, by rotating the first screw, causes the slider to slide inside the groove. The slider drives the clamping plate to move, thereby fixing and limiting the ball screw. Simultaneously, the movement of the sliding rod drives the ball to move, and the ball contacts the ball screw. Simultaneously, the rotation of the reciprocating screw drives the sliding plate, sliding rod, and ball to move. Through continuous friction between the ball and the ball screw, the ball screw is straightened synchronously. By slowly and continuously pressing the ball screw, a synchronous overall pressing and straightening operation is achieved, improving the device's straightening efficiency and practicality. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic cross-sectional view of the present invention.
[0018] Figure 3 This utility model Figure 1 Enlarged structural diagram of section A in the middle;
[0019] Figure 4 This utility model Figure 2 A magnified structural diagram of section B.
[0020] The following are labels in the attached diagram: 1. Straightening worktable; 2. Support platform; 3. Fixing plate; 4. Reciprocating lead screw; 5. Slide plate; 6. Slide rod; 7. Roller; 8. Through hole; 9. Slide groove; 10. Slider; 11. Clamping plate; 12. First screw; 13. Second screw; 14. Limiting groove; 15. Motor; 16. First gear; 17. Second gear; 18. Top plate; 19. Fifth screw; 20. Connecting plate; 21. Baffle; 22. Support block; 23. Fixing groove. Detailed Implementation
[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0022] The present invention provides a ball screw straightening device, comprising a straightening worktable 1, a support platform 2, a ball 7, and two fixing plates 3. The support platform 2 is fixedly installed on the top of the straightening worktable 1, and the two fixing plates 3 are symmetrically fixedly installed on the top of the straightening worktable 1. A reciprocating screw 4 is rotatably installed between the two fixing plates 3, and a power mechanism is provided at one end of each reciprocating screw 4.
[0023] Two slide rods 6 are symmetrically and rotatably mounted on the outer side wall of the ball 7. The top of the two slide rods 6 is slidably mounted with a slide plate 5 through a limiting mechanism. A clamping mechanism is provided in the bottom area of each fixed plate 3.
[0024] The clamping mechanism includes a slider 10. A through hole 8 is provided at the bottom end of the fixed plate 3, and a groove 9 is provided on the outer wall of the through hole 8. The slider 10 is slidably connected to the two grooves 9. A clamping plate 11 is fixedly installed at the bottom end of the slider 10. A first screw 12 is longitudinally rotatably installed at the top end of the slider 10. The first screw 12 is screwed into the bottom area of the fixed plate 3. The limiting mechanism includes a second screw 13. A limiting groove 14 is provided at the bottom end of the slide plate 5, and the limiting groove 14 is slidably connected to the outer wall of the slide rod 6. The bottom end of the second screw 13 is rotatably connected to the top end of the slide rod 6, and the second screw 13 is screwed into the top area of the slide plate 5. The power mechanism includes a motor 15, which is fixedly installed on the outer wall of one of the fixed plates 3. The output end of the motor 15 is connected to the reciprocating... One end of the lead screw 4 is fixedly connected, and a first gear 16 is fixedly installed on the outer wall of the reciprocating lead screw 4. A second gear 17 is rotatably installed on the outer wall of one of the fixed plates 3. The second gear 17 meshes with the two first gears 16. A top plate 18 is slidably installed on the top of the straightening worktable 1. A fifth screw 19 is horizontally screwed on the top plate 18. One end of the fifth screw 19 is rotatably connected to the bottom area of the outer wall of one of the fixed plates 3. A connecting plate 20 is fixedly installed on the outer wall of each slide rod 6. A baffle 21 is fixedly installed on each connecting plate 20. Each baffle 21 fits against the outer wall of the ball screw. A support block 22 is fixedly installed at the bottom of the inside of each through hole 8. A fixing groove 23 is opened on the outer wall of the ball 7.
[0025] like Figures 1 to 4As shown, this utility model discloses a ball screw straightening device. During operation, rotating the fifth screw 19 simultaneously drives the top plate 18 to slide on the top of the straightening worktable 1, thereby limiting the two ends of the ball screw. Rotating the first screw 12 simultaneously causes the slider 10 to slide inside the groove 9. The slider 10 drives the clamping plate 11 to move, thus fixing and limiting the ball screw. The installation of the support block 22 facilitates support and fixation of the ball screw. Rotating the second screw 13 simultaneously drives the slide rod 6 to slide on the limiting groove 14. The movement of the slide rod 6 simultaneously drives the ball 7 to move longitudinally. The system operates by tightly engaging the ball screw at the top of the support platform 2. The ball 7 contacts the ball screw, and the motor 15 outputs power to the reciprocating screw 4. This power, transmitted through the second gear 17, synchronously drives the two first gears 16 and the reciprocating screw 4 to rotate. Simultaneously, the rotation of the reciprocating screw 4 moves the slide plate 5, slide rod 6, and ball 7. The ball 7 continuously rubs against the ball screw. The fixed groove 23 improves the stability of the contact between the ball 7 and the ball screw, thus simultaneously straightening the ball screw. The installation of the connecting plate 20 and baffle 21 facilitates longitudinal limiting of the straightened ball screw, preventing rotation during straightening.
[0026] The motor 15 of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A ball screw straightening device, comprising a straightening worktable (1), a support platform (2), a ball (7), and two fixing plates (3), wherein the support platform (2) is fixedly installed on the top of the straightening worktable (1), and the two fixing plates (3) are symmetrically fixedly installed on the top of the straightening worktable (1), characterized in that: A reciprocating screw (4) is rotatably installed between the two fixed plates (3), and a power mechanism is provided at one end of each reciprocating screw (4); Two slide rods (6) are symmetrically rotated on the outer side wall of the ball (7). The top of the two slide rods (6) is slidably mounted with a sliding plate (5) through a limiting mechanism. A clamping mechanism is provided in the bottom area of each fixed plate (3). The clamping mechanism includes a slider (10), a through hole (8) is provided at the bottom end of the fixed plate (3), a groove (9) is provided on the outer side wall of the through hole (8), the slider (10) is slidably connected to the two grooves (9), a clamping plate (11) is fixedly installed at the bottom end of the slider (10), and a first screw (12) is longitudinally rotated and installed at the top end of the slider (10), and the first screw (12) is screwed into the bottom area of the fixed plate (3).
2. The ball screw straightening device according to claim 1, characterized in that: The limiting mechanism includes a second screw (13), a limiting groove (14) is provided at the bottom end of the slide plate (5), the limiting groove (14) is slidably connected to the outer wall of the slide rod (6), the bottom end of the second screw (13) is rotatably connected to the top end of the slide rod (6), and the second screw (13) is screwed to the top area of the slide plate (5).
3. The ball screw straightening device according to claim 1, characterized in that: The power mechanism includes a motor (15), which is fixedly installed on the outer wall of one of the fixed plates (3). The output end of the motor (15) is fixedly connected to one end of a reciprocating screw (4). A first gear (16) is fixedly installed on the outer wall of the reciprocating screw (4), and a second gear (17) is rotatably installed on the outer wall of one of the fixed plates (3). The second gear (17) meshes with the two first gears (16).
4. The ball screw straightening device according to claim 1, characterized in that: The top of the straightening workbench (1) is slidably mounted with a top plate (18), and a fifth screw (19) is horizontally screwed onto the top plate (18). One end of the fifth screw (19) is rotatably connected to the bottom area of the outer side wall of one of the fixed plates (3).
5. The ball screw straightening device according to claim 1, characterized in that: A connecting plate (20) is fixedly installed on the outer side wall of each slide rod (6), and a baffle (21) is fixedly installed on each connecting plate (20). Each baffle (21) is in contact with the outer side wall of the ball screw.
6. The ball screw straightening device according to claim 1, characterized in that: A support block (22) is fixedly installed at the bottom of the interior of each of the through holes (8).
7. The ball screw straightening device according to claim 1, characterized in that: A fixing groove (23) is provided on the outer side wall of the ball (7).
Citation Information
Patent Citations
Straightening device of ball screw
CN214022714U