Lead screw supporting device
By using back-to-back angular contact ball bearings and deep groove ball bearings installed in the screw support device, combined with the design of lock nuts and glands, the problem of easy loosening of the screw support device is solved, and the effect of accurate positioning and never loosening is achieved, and the stability of the movement of the slide plate of the mechanical equipment is improved.
Patent Information
- Application Number
- CN202420275783.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-02-04
AI Technical Summary
The existing lead screw support devices are prone to loosening during use, resulting in unstable movement of the slide board of the mechanical equipment.
A lead screw support device is designed, using back-to-back angular contact ball bearings and deep groove ball bearings. Through the combination of locking nuts and glands, the screw nut pair is positioned accurately and never loosened.
The accurate positioning and never loosening of the lead screw support device are achieved, and the stability and reliability of the movement of the slide board of the mechanical equipment are improved.
Smart Images
Figure CN222937189U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent belongs to the field of mechanical equipment slide plate moving devices. Background Art
[0002] During the internship of students in mechanical equipment slide plate movement, generally, for some slide plate movements, it is necessary to drive the ball screw to rotate by a motor, and then the nut and the slide plate are connected together to make a linear movement. The screw in the screw-nut pair needs to be supported, and the screw support device is essential for the movement of the mechanical equipment slide plate. The existing screw support devices usually use single nuts for locking, which are prone to loosening during use. To solve the technical problem of the screw being prone to loosening during use, we have designed a screw support device. Content of the Utility Model
[0003] The utility model discloses a screw support device. Its advantages are as follows: the positioning of the supported ball screw nut pair is accurate and it will never loosen.
[0004] A screw support device is composed of a lock nut (16), a gland (13), a spacer sleeve (15), a pair of angular contact ball bearings (14) installed back-to-back, a front support (5), a ball screw nut pair (17), a shaft retaining ring (23), a deep groove ball bearing (10), a rear support (24), a cover (11), a first bolt (12), and a slide plate (6) (for the structural shape, see Figure 1 ).
[0005] The shaft retaining ring (23) functions to block the deep groove ball bearing (10) and prevent the deep groove ball bearing (10) from falling off the ball screw nut pair (17).
[0006] The cover (11) functions to prevent dust and foreign objects from entering the deep groove ball bearing (10).
[0007] A screw support device is composed of a lock nut (16), a gland (13), a spacer sleeve (15), a pair of angular contact ball bearings (14) installed in the DB type, a front support (5), a ball screw nut pair (17), a shaft retaining ring (23), a deep groove ball bearing (10), a rear support (24), a cover (11), a first bolt (12), and a slide plate (6);
[0008] Its characteristics are that a pair of back-to-back angular contact ball bearings (14) are mounted in the inner hole of the front support (5) in the DB type to support the ball screw nut pair (17). A spacer sleeve (15) is sleeved on the front end of the inner ring of the angular contact ball bearing (14) and locked on the ball screw nut pair (17) by a pair of lock nuts (16). The outer ring of the angular contact ball bearing (14) is pressed in the inner hole of the front support (5) by a gland (13) with a first bolt (12). A deep groove ball bearing (10) is mounted in the inner hole of the rear support (24). The outer ring of the deep groove ball bearing (10) is pressed by a cover (11) with a first bolt (12) to support the ball screw nut pair (17).
[0009] The screw support device is installed on the base (8).
[0010] The material of the front support (5) is gray cast iron HT300.
[0011] The material of the rear support (24) is gray cast iron HT300.
[0012] The material of the gland (13) is gray cast iron HT300.
[0013] The material of the cover (11) is gray cast iron HT300.
[0014] The base (8) is part of the mobile system. The linear guide (9), coupling (18), servo motor (19), third bolt (20), motor connecting plate (21), second bolt (22), and fourth bolt (27) are also included in the mobile system. Description of the Drawings
[0015] Figure 1 A screw support device
[0016] Figure 2 The position of a screw support device in the entire mobile device Detailed implementation manners
[0017] In the inner hole of the front support (5), a pair of back-to-back mounted angular contact ball bearings (14) are mounted in the DB type to support the front end of the ball screw nut pair (17). The outer ring of the back-to-back mounted angular contact ball bearings (14) is pressed in the inner hole of the front support (5) by a gland (13) with a first bolt (12). The front end of the ball screw nut pair (17) is inserted into the inner hole of the back-to-back mounted angular contact ball bearings (14), then the spacer sleeve (15) is sleeved on, and then a pair of lock nuts (16) are tightened at the front end thread of the ball screw nut pair (17). A pair of back-to-back mounted angular contact ball bearings (14) are mounted in the inner ring in the DB type and pressed against the front shoulder of the ball screw nut pair (17), and the front end installation is completed.
[0018] Then, slip the skateboard (6) over the outer diameter of the nut of the ball screw nut pair (17) and tighten it with the second bolt (22).
[0019] Next, install the deep groove ball bearing (10) into the inner hole of the rear bracket (24), slip it over the rear journal of the ball screw nut pair (17), then slip the shaft retaining ring (23) over the ball screw nut pair (17), and then fasten the cover (11) to the rear bracket (24) with the first bolt (12). The installation at the rear end is completed.
[0020] Then, install the entire screw support device on the base (8).
Claims
1. A screw support device, comprising a locking nut (16), a gland (13), a spacer (15), a DB type angular contact ball bearing (14), a front bracket (5), a ball screw nut pair (17), a shaft retaining ring (23), a deep groove ball bearing (10), a rear bracket (24), a cover (11), a first bolt (12), and a slide plate (6); The invention is characterized in that a pair of angular contact ball bearings (14) are installed in the inner hole of the front bracket (5) in DB type to support the ball screw nut pair (17); the front end of the inner ring of the angular contact ball bearing (14) is inserted into a spacer (15) and locked on the ball screw nut pair (17) by a pair of locking nuts (16); the outer ring of the angular contact ball bearing (14) is pressed into the inner hole of the front bracket (5) by a pressure cover (13) through a first bolt (12); a deep groove ball bearing (10) is installed in the inner hole of the rear bracket (24); the outer ring of the deep groove ball bearing (10) is pressed by a cover (11) through the first bolt (12); and the inner ring of the deep groove ball bearing supports the ball screw nut pair (17); The screw support device is mounted on the base (8); The material of the front bracket (5) is grey cast iron HT300; The material of the rear bracket (24) is grey cast iron HT300; The material of the gland (13) is grey cast iron HT300; The cover (11) is made of grey cast iron HT300; The screw support device is part of the moving system, and the base (8) is also part of the moving system. The moving system is also composed of a linear rail (9), a coupling (18), a servo motor (19), a third bolt (20), a motor connecting plate (21), a second bolt (22), and a fourth bolt (27).