An anti-spin transmission handwheel assembly
By using a combination of limit steps, contact bearings and elastic compressors in the transmission handwheel set of the image measuring instrument, the rotation problem caused by assembly error is solved, and the stability and cost-effectiveness of the handwheel set are improved.
Patent Information
- Application Number
- CN201711344367.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-12-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2037-12-15
AI Technical Summary
The transmission handwheel set in the existing image measuring instrument has cyclonic problems due to assembly errors, which affects the equipment accuracy and user experience. The existing improvement methods cannot be completely solved and increase costs.
An anti-rotation transmission handwheel set is designed, including handwheel seat, handwheel, handle and bar. By setting limit steps, front and rear angular contact bearings, elastic compressors and end caps on the bar, the damping effect of the spring is utilized. It prevents handwheel from rotating, has a simple and reliable structure, and is suitable for traditional equipment transformation.
It effectively prevents the rotation of the handwheel set, solves the problem of traditional bar transmission handwheel rotation, reduces costs, and improves the reliability and versatility of the equipment.
Smart Images
Figure CN107900988B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of image measuring instruments, and in particular to an anti-spin transmission handwheel group. Background Art
[0002] The friction transmission consists of a friction flange, a polished rod, a polished rod support seat, a polished rod fixing seat, a handwheel, a handle, etc. This structure has the characteristics of high standardization, strong versatility, and low cost. Therefore, it is currently widely used in the drive of the X-axis and Y-axis worktables of manual imagers. However, the three-point non-concentricity of the polished rod support seat, the friction flange, and the polished rod fixing seat caused by the assembly process and the straightness error of the polished rod will cause the handwheel to rotate during the use of the product. This causes great trouble to the use of the manual imager, directly affects the accuracy of the equipment, and reduces the user experience and equipment quality.
[0003] Many manufacturers have tried to improve the above problems, such as purchasing imported high-quality polished rods, imported bearings, increasing the clamping force of the friction flange, etc. However, the above methods can only improve the rotation problem and cannot completely solve the problem and increase the cost of the equipment. Therefore, it is of great significance to study technical solutions that can fundamentally solve this problem. Summary of the invention
[0004] The purpose of the present invention is to provide an anti-rotation transmission handle assembly to solve the problem of the handle rotating during use in the prior art.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-rotation transmission handwheel group, comprising a handwheel seat, a handwheel, a handle and a light rod, the handle is fixedly mounted on the handwheel, the light rod passes through the handwheel seat, the light rod is fixedly connected to the handwheel, a limiting step is provided on the inner ring of the handwheel seat, a front angular contact bearing, a limiting ring, an elastic compression piece and a rear angular contact bearing are sequentially sleeved on the light rod from the limiting step toward the handwheel direction, the limiting ring is fixedly connected to the light rod, and an end cover for compressing the elastic compression piece is provided on the side of the rear angular contact bearing away from the elastic compression piece.
[0006] Preferably, the limiting ring is fixedly connected to the polished rod via a first set screw.
[0007] Preferably, the polished rod is fixedly connected to the handwheel via a second set screw.
[0008] Preferably, the end cover is a nut with an external thread, and the handwheel seat is provided with an internal thread matching the external thread.
[0009] Preferably, a locking threaded hole is provided on the side of the handwheel seat, and the locking threaded hole and a locking screw passing through the handwheel seat form a thread pair, and the locking screw presses the end cover.
[0010] Preferably, the elastic compression member is a spring.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the damping effect generated by the lateral force of the front angular contact bearing and the rear angular contact bearing caused by the end cover compression spring is applied to the light rod, thereby achieving the purpose of preventing the handwheel assembly from rotating. The present invention solves the common problem of handwheel rotation in traditional light rod transmission, and has a simple structure, good reliability and strong versatility. The present invention can be directly modified on the equipment of traditional light rod transmission, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the present invention;
[0013] Figure 2 It is a schematic diagram of the structure enlargement of location A of the present invention.
[0014] In the figure: 1 handwheel seat, 11 limiting step, 2 front angular contact bearing, 3 limiting ring, 31 first set screw, 4 spring, 5 front angular contact bearing, 6 end cover, 61 anti-loosening screw, 7 polished rod, 8 handwheel, 81 second set screw, 9 handle. DETAILED DESCRIPTION
[0015] 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0016] See also Figure 1-2 The present invention provides a technical solution: an anti-rotation transmission handwheel group, comprising a handwheel seat 1, a handwheel 8, a handle 9 and a polished rod 7, the handle 9 is fixedly mounted on the handwheel 8, the polished rod 7 passes through the handwheel seat 1, one end of the polished rod 7 is fixedly connected to the handwheel 8, and the other end of the polished rod 7 is connected to the motor through a coupling. A limiting step 11 is provided on the inner ring of the handwheel seat 1, and a front angular contact bearing 2, a limiting ring 3, an elastic compression member and a rear angular contact bearing 5 are sequentially sleeved on the polished rod 7 from the limiting step 11 to the direction of the handwheel 8, one side of the front angular contact bearing 2 is tightly against the limiting step 11, and the other side is tightly against the limiting ring 3, the limiting ring 3 is fixedly connected to the polished rod 7 to prevent the polished rod 7 from sliding back and forth, and an end cover 6 for compressing the elastic compression member is provided on the side of the rear angular contact bearing 5 away from the elastic compression member. In the present invention, the end cover 6 is an M30 nut with an external thread, and the handwheel seat 1 is provided with an internal thread matching the external thread of the M30 nut.
[0017] Specifically, in the present invention, the elastic compression member is a spring 4, which is compressed by 7 mm under the action of the end cover 6. The compressed spring 4 acts on the lateral force of the front angular contact bearing 2 and the rear angular contact bearing 5 to generate damping, and the damping acts on the light rod 7, thereby preventing the handwheel assembly from rotating. In other embodiments, the elastic compression member may also be an elastic rubber body, etc.
[0018] Specifically, the limit ring 3 is fixedly connected to the polished rod 7 by a first tightening screw 31. The first tightening screw 31 is provided with an external thread, and the limit ring 3 is provided with a matching internal thread. The first tightening screw 31 passes through the limit ring 3 and presses the polished rod 7. Of course, the polished rod 7 may also be provided with an internal thread matching the first tightening screw 31. The first tightening screw 31 passes through the limit ring 3 and is screwed and fixed to the polished rod 7. Fixing the limit ring 3 on the polished rod 7 can prevent the polished rod 7 from sliding back and forth.
[0019] Furthermore, the polished rod 7 is fixedly connected to the handwheel 8 by a second set screw 81. A threaded hole matching the thread of the second set screw 81 is provided on the side of the handwheel 8. A threaded hole matching the thread of the second set screw 81 is also provided on the polished rod 7. The second set screw 81 is screwed into the polished rod 7 from the side of the handwheel 8, so that the polished rod 7 and the handwheel 8 are fixedly connected.
[0020] Furthermore, a locking threaded hole is provided on the side of the handwheel seat 1, and the locking threaded hole and the anti-loosening screw 61 that passes through the handwheel seat 1 form a threaded pair. The anti-loosening screw 61 presses the end cover 6. The loosening of the end cover 6 will cause the spring 4 to be released, and the damping generated by the lateral force of the spring 4 on the front angular contact bearing 2 and the rear angular contact bearing 5 will be reduced, which will easily cause the handwheel assembly to rotate.
[0021] 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 transmission hand wheel assembly with an anti-rotation function, comprising a hand wheel seat (1), a hand wheel (8), a handle (9) and a bare rod (7), wherein the handle (9) is fixedly mounted on the hand wheel (8), and characterized in that: The polished rod (7) passes through the hand wheel seat (1), the polished rod (7) is fixedly connected to the hand wheel (8), the inner ring of the hand wheel seat (1) is provided with a limiting step (11), and a front angular contact bearing (2), a limiting ring (3), an elastic compression member and a rear angular contact bearing (5) are sequentially sleeved on the polished rod (7) from the limiting step (11) toward the hand wheel (8), the limiting ring (3) is fixedly connected to the polished rod (7), and an end cover (6) for compressing the elastic compression member is provided on the side of the rear angular contact bearing (5) away from the elastic compression member; The end cover (6) is a nut provided with an external thread, and the hand wheel seat (1) is provided with an internal thread matching the external thread; A locking threaded hole is provided on the side of the hand wheel seat (1), the locking threaded hole and a locking screw (61) passing through the hand wheel seat (1) form a thread pair, and the locking screw (61) presses the end cover (6); The elastic compression member is a spring (4).
2. The anti-rotation transmission hand wheel assembly according to claim 1, characterized in that: The limiting ring (3) is fixedly connected to the polished rod (7) via a first set screw (31).
3. The anti-rotation transmission hand wheel assembly according to claim 1, characterized in that: The polished rod (7) is fixedly connected to the hand wheel (8) via a second set screw (81).