Self-locking ball screw hand wheel
By introducing self-locking bolts and positioning threaded hole structures into the ball screw handwheel, combined with the precise rotation of the annular scale, the problem of insufficient instability and accuracy of the ball screw handwheel when it stops for a long time is solved, and the problem of insufficient instability and accuracy of the ball screw handwheel is realized. Higher precision control and ease of use.
Patent Information
- Application Number
- CN202420363650.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-27
AI Technical Summary
Existing ball screw handwheels are prone to instability and offset when stopped for a long time, and manual operation leads to insufficient accuracy, affecting the position accuracy of the ball nut.
A self-locking ball screw handwheel is designed, adopting self-locking bolts and positioning threaded hole structures. It is fixed by the limit position between the handwheel and the fixed seat, and combined with the precise rotation of the annular scale and handle, the self-locking of the handwheel and the self-locking of the handwheel is realized. Accurate control.
It effectively prevents the ball nut from being offset due to external force, improves the movement accuracy of the ball nut and nut seat, and enhances the applicability and practicality of the handwheel.
Smart Images
Figure CN222277403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical transmission, in particular to a self-locking ball screw hand wheel. Background Art
[0002] A ball screw handwheel is a device used to transmit and control a ball screw. A ball screw is a device that transmits and converts rotational motion into linear motion. A ball screw handwheel is used to manually operate the ball screw to achieve precise position adjustment or movement. Ball screw handwheels are widely used in CNC machine tools, medical equipment, robots and other fields.
[0003] In the use of ball screw handwheel, the following problems often occur:
[0004] 1. When the ball nut is driven by the screw rod to move to the desired location and needs to stop for a long time, if it is not locked accurately and stably, instability will occur, causing the ball nut to deviate, affecting the use effect;
[0005] 2. When using the common ball screw handwheel, since the handwheel needs to be manually operated, the accuracy of its rotation cannot be as accurate as that of a motor, which in turn affects the accuracy of the moving position of the ball nut.
[0006] To this end, we proposed a ball screw handwheel with self-locking function and good movement accuracy. Utility Model Content
[0007] The purpose of the utility model is to provide a self-locking ball screw handwheel, which is practical and convenient, and solves the problem that the existing ball screw handwheel has poor self-locking effect and good accuracy, so as to solve the problems raised by the above-mentioned background technology.
[0008] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a self-locking ball screw handwheel, comprising a screw, a fixed seat, a handwheel and a self-locking bolt, the outer surface of the screw is provided with a ball nut and a nut seat, the front end of the screw is inserted into the interior of the fixed seat, the front surface of the fixed seat is provided with a positioning threaded hole, the front surface of the fixed seat is provided with an annular scale, the front end of the screw is fixedly connected to a coupling, the front end of the coupling is fixedly connected to the rear end of the handwheel, a handle is installed on the front surface of the handwheel, the front surface of the handwheel is provided with a self-locking threaded hole, the center of the front surface of the handwheel is provided with an anti-lost threaded hole, and the self-locking bolt is located inside the self-locking threaded hole and the positioning threaded hole.
[0009] Preferably, the ball nut and the nut seat are threadedly connected to the outer surface of the screw rod, the ball nut is fixedly connected to the nut seat, and the rear end of the screw rod is rotatably connected to a support seat.
[0010] Preferably, twelve positioning threaded holes are provided, and the positioning threaded holes are distributed in an annular manner on the front surface of the fixing seat. The outer surface of the annular scale is fixedly mounted with scale marks, and the scale marks correspond to the positions of the positioning threaded holes.
[0011] Preferably, the handwheel is fixedly connected to the screw rod via a coupling, the front surface of the handwheel is fixedly connected to the handle, and the self-locking threaded hole and the anti-lost threaded hole are consistent in size with the positioning threaded hole.
[0012] Preferably, the self-locking bolt passes through the self-locking threaded hole and penetrates into the interior of the positioning threaded hole, and the self-locking bolt is threadedly connected with the self-locking threaded hole and the positioning threaded hole.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] (1) The utility model provides a self-locking ball screw handwheel. When in use, a staff member can manually turn the handwheel through the handle. The rotation of the handwheel can drive the screw to rotate through the coupling, and then drive the ball nut and the nut seat to move. When the nut seat moves to a specified position and needs to stop for a long time, in order to prevent the nut seat from being offset due to external force or other factors, the staff member can unscrew the self-locking bolt from the inside of the anti-lost threaded hole, and insert the self-locking bolt thread through the self-locking threaded hole into the inside of the positioning threaded hole, so that the handwheel and the fixed seat are limited and fixed, so as to achieve the effect of handwheel self-locking, and then lock the screw to prevent the screw from being slightly rotated due to external force or other factors, which will cause the nut seat to be offset, thereby enriching the overall function and increasing the overall applicability.
[0015] (2) The utility model provides a self-locking ball screw handwheel. When in use, the staff can accurately turn the handwheel according to the scale marks on the outer surface of the annular scale, calculate the rotation value according to the handle and the scale marks, and then accurately control the forward and backward movement positions of the ball nut and the nut seat, thereby improving the accuracy of the movement of the ball nut and the nut seat and increasing the overall applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the utility model when the whole is self-locking;
[0017] Figure 2 It is a schematic diagram of the hand wheel of the utility model when it rotates;
[0018] Figure 3 It is a schematic diagram of the position of the positioning threaded hole of the utility model.
[0019] In the figure: 1. screw rod; 11. ball nut; 12. nut seat; 13. support seat; 2. fixing seat; 21. positioning threaded hole; 22. annular scale; 221. scale mark; 3. handwheel; 31. coupling; 32. handle; 33. self-locking threaded hole; 34. anti-lost threaded hole; 35. self-locking bolt. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 A self-locking ball screw handwheel, comprising a screw 1, a fixed seat 2, a handwheel 3 and a self-locking bolt 35. The outer surface of the screw 1 is provided with a ball nut 11 and a nut seat 12. The front end of the screw 1 penetrates into the interior of the fixed seat 2. The front surface of the fixed seat 2 is provided with a positioning threaded hole 21. The front surface of the fixed seat 2 is provided with an annular scale 22. The front end of the screw 1 is fixedly connected with a coupling 31. The front end of the coupling 31 is fixedly connected with the rear end of the handwheel 3. A handle 32 is installed on the front surface of the handwheel 3. A self-locking threaded hole 33 is provided on the front surface of the handwheel 3. An anti-lost threaded hole 34 is provided at the center of the front surface of the handwheel 3. The self-locking bolt 35 is located at The staff can manually turn the handwheel 3 through the handle 32 inside the self-locking threaded hole 33 and the positioning threaded hole 21. The rotation of the handwheel 3 can drive the screw 1 to rotate through the coupling 31, and then drive the ball nut 11 and the nut seat 12 to move. When the nut seat 12 moves to the specified position and needs to stop for a long time, in order to prevent the nut seat 12 from shifting due to external force or other factors, the staff can unscrew the self-locking bolt 35 from the anti-lost threaded hole 34, and thread the self-locking bolt 35 through the self-locking threaded hole 33 and insert it into the positioning threaded hole 21, so that the handwheel 3 and the fixing seat 2 are limited and fixed, thereby achieving the self-locking effect of the handwheel 3.
[0022] Furthermore, the ball nut 11 and the nut seat 12 are threadedly connected to the outer surface of the screw rod 1, the ball nut 11 and the nut seat 12 are fixedly connected, and the rear end of the screw rod 1 is rotatably connected to the support seat 13. When in use, by setting the ball nut 11 and the nut seat 12, the accessories fixed thereto can be driven to move forward and backward.
[0023] Furthermore, twelve positioning threaded holes 21 are provided, and the positioning threaded holes 21 are distributed in an annular manner on the front surface of the fixing seat 2. A scale mark 221 is fixedly installed on the outer surface of the annular scale 22. The scale mark 221 corresponds to the position of the positioning threaded hole 21. The staff can accurately turn the handwheel 3 according to the scale mark 221 on the outer surface of the annular scale 22, and can calculate the rotation value according to the handle 32 and the scale mark 221, and then can accurately control the forward and backward movement positions of the ball nut 11 and the nut seat 12, thereby improving the accuracy of the movement of the ball nut 11 and the nut seat 12.
[0024] Furthermore, the handwheel 3 is fixedly connected to the screw rod 1 through a coupling 31, and the front surface of the handwheel 3 is fixedly connected to the handle 32. The self-locking threaded hole 33 and the anti-lost threaded hole 34 are consistent in size with the positioning threaded hole 21. When in use, the staff can manually rotate the handwheel 3 through the handle 32, and the handwheel 3 can drive the screw rod 1 to rotate through the coupling 31, and then drive the ball nut 11 and the nut seat 12 threadedly connected to the screw rod 1 to move forward and backward.
[0025] Furthermore, the self-locking bolt 35 passes through the self-locking threaded hole 33 and the interior of the positioning threaded hole 21, and the self-locking bolt 35 is threadedly connected to the self-locking threaded hole 33 and the positioning threaded hole 21. When in use, the hand wheel 3 can be limited and fixed by inserting the self-locking bolt 35 into the self-locking threaded hole 33 and the interior of the positioning threaded hole 21, thereby achieving a self-locking effect of the hand wheel 3.
[0026] Working principle: The utility model is a self-locking ball screw handwheel. When in use, the staff can calculate the rotation value of the handwheel 3 through the scale mark 221 on the outer surface of the annular scale 22 and the handle 32, and then can accurately control the forward and backward movement position of the nut seat 12, thereby improving the accuracy of the movement of the nut seat 12. When the nut seat 12 moves to the designated location and needs to stay for a long time, the staff can take out the self-locking bolt 35 from the inside of the anti-abandonment threaded hole 34. When rotating, the self-locking bolt 35 can be effectively prevented from being lost by threading it into the inside of the anti-abandonment threaded hole 34. After the self-locking bolt 35 is taken out, it is threadedly inserted into the inside of the self-locking threaded hole 33 and the positioning threaded hole 21, so that the handwheel 3 and the fixed seat 2 can be locked and fixed, thereby preventing the handwheel 3 from causing the nut seat 12 to deviate due to the rotation of the screw rod 1 due to external factors, thereby achieving the self-locking effect of the handwheel 3, thereby increasing the overall practicality.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A self-locking ball screw handwheel, comprising a screw (1), a fixing seat (2), a handwheel (3) and a self-locking bolt (35), characterized in that: The outer surface of the screw rod (1) is provided with a ball nut (11) and a nut seat (12); the front end of the screw rod (1) penetrates into the interior of the fixing seat (2); the front surface of the fixing seat (2) is provided with a positioning threaded hole (21); the front surface of the fixing seat (2) is provided with an annular scale (22); the front end of the screw rod (1) is fixedly connected to a coupling member (31); the front end of the coupling member (31) is fixedly connected to the rear end of a hand wheel (3); the front surface of the hand wheel (3) is provided with a handle (32); the front surface of the hand wheel (3) is provided with a self-locking threaded hole (33); the center of the front surface of the hand wheel (3) is provided with an anti-lost threaded hole (34); the self-locking bolt (35) is located inside the self-locking threaded hole (33) and the positioning threaded hole (21).
2. A self-locking ball screw handwheel according to claim 1, characterized in that: The ball nut (11) and the nut seat (12) are threadedly connected to the outer surface of the screw rod (1); the ball nut (11) and the nut seat (12) are fixedly connected; and the rear end of the screw rod (1) is rotatably connected to a support seat (13).
3. The self-locking ball screw handwheel according to claim 1, characterized in that: Twelve positioning threaded holes (21) are provided, and the positioning threaded holes (21) are distributed in an annular manner on the front surface of the fixing seat (2). A scale mark (221) is fixedly mounted on the outer surface of the annular scale (22), and the scale mark (221) corresponds to the position of the positioning threaded holes (21).
4. The self-locking ball screw handwheel according to claim 1, characterized in that: The hand wheel (3) is fixedly connected to the screw rod (1) via a coupling (31); the front surface of the hand wheel (3) is fixedly connected to a handle (32); and the self-locking threaded hole (33) and the anti-lost threaded hole (34) are of the same size as the positioning threaded hole (21).
5. The self-locking ball screw handwheel according to claim 1, characterized in that: The self-locking bolt (35) penetrates the self-locking threaded hole (33) and penetrates into the interior of the positioning threaded hole (21); the self-locking bolt (35) is threadedly connected to the self-locking threaded hole (33) and the positioning threaded hole (21).