CN211288642U

CN211288642U - Automatic clearance compensation nut

Info

Publication number: CN211288642U
Application number: CN201921858506.0U
Authority: CN
Inventors: 徐韶华; 何波; 何玺
Original assignee: Chengdu Siwi High Tech Industrial Park Co Ltd
Current assignee: Chengdu Siwi High Tech Industrial Park Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-18
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses an automatic clearance compensation nut, it includes main nut (1), vice nut (2), chucking spring (3), lead screw (4), fixture block A (5) and fixture block B (6), threaded connection has main nut (1) and vice nut (2) on lead screw (4), and the both ends face of main nut (1) is perpendicular A (7), and a terminal surface of vice nut (2) is inclined plane (8) and perpendicular B (9), and inclined plane (8) and perpendicular A (7) set up mutually, the structure of fixture block A (5) and fixture block B (6) is the same, and fixture block A (5) and fixture block B (6) all are located between main nut (1) and vice nut (2), and are located the both sides of lead screw (4) respectively. The utility model has the advantages that: compact structure, automatic clearance compensation, large bearing capacity and convenient installation.

Description

Automatic clearance compensation nut

Technical Field

The utility model relates to a mechanical transmission's technical field, especially an automatic clearance compensation nut.

Background

At present, the fit clearance between the common nut and the screw rod and the abrasion clearance in the use process are not well solved, so that the transmission precision and the stability are poor. In various patents, a gap compensation method for a common nut is mentioned, and in summary, the gap compensation method mainly depends on elasticity or other devices are added for compensation, and the defect of depending on elasticity is that when the load exceeds the elasticity, the gap compensation effect is weakened; the typical method for compensating by adding the device is to add a nut, and when a gap exists, the compensation is carried out by depending on the locking force of the nut, and the method cannot realize automatic compensation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, realize automatic clearance compensation, bearing capacity is big, simple to operate's automatic clearance compensation nut.

The purpose of the utility model is realized through the following technical scheme: an automatic clearance compensation nut comprises a main nut, an auxiliary nut, a clamping spring, a screw rod, a clamping block A and a clamping block B, the screw rod is in threaded connection with a main nut and an auxiliary nut, two end faces of the main nut are vertical faces A, one end face of the auxiliary nut is an inclined face and a vertical face B, the inclined face is opposite to the vertical face A, the fixture block A and the fixture block B have the same structure, the fixture block A and the fixture block B are both positioned between the main nut and the auxiliary nut, and are respectively positioned at both sides of the screw rod, the front end surface of the fixture block A is provided with a mounting hole, the left and right end surfaces of the fixture block A are respectively provided with a locking surface and a vertical surface C, the locking surface is matched with the inclined surface, the vertical surface C is matched with the vertical surface A, the clamping spring is sleeved on the screw rod and located between the clamping block A and the clamping block B, and two supporting legs of the clamping spring are respectively inserted into the mounting holes of the clamping block A and the clamping block B.

And the screw rod is also sleeved with a gasket.

The gasket is sleeved on the screw rod and is positioned in the annular ring of the clamping spring.

The main nut, the auxiliary nut and the screw rod are coaxially arranged.

The utility model has the advantages of it is following: the utility model discloses compact structure, realization automatic clearance compensation, bearing capacity are big, simple to operate.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the operation of the present invention;

FIG. 3 is a schematic view of the structure of the garter spring;

FIG. 4 is a schematic structural diagram of a fixture block A;

FIG. 5 is a schematic structural view of the main nut;

FIG. 6 is a schematic structural view of the sub-nut;

in the figure, 1-main nut, 2-auxiliary nut, 3-clamping spring, 4-screw rod, 5-clamping block A, 6-clamping block B, 7-vertical surface A, 8-inclined surface, 9-vertical surface B, 10-mounting hole, 11-locking surface, 12-vertical surface C and F are the elastic force of the clamping spring.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 6, an automatic clearance compensation nut includes a main nut 1, an auxiliary nut 2, a clamping spring 3, a screw rod 4, a fixture block A5 and a fixture block B6, the screw rod 4 is connected with the main nut 1 and the auxiliary nut 2 by a thread, both end surfaces of the main nut 1 are vertical surfaces A7, one end surface of the auxiliary nut 2 is an inclined surface 8 and a vertical surface B9, the inclined surface 8 is opposite to the vertical surface A7, the fixture block A5 and the fixture block B6 have the same structure, the fixture block A5 and the fixture block B6 are both located between the main nut 1 and the auxiliary nut 2 and are respectively located at both sides of the screw rod 4, a mounting hole 10 is formed in the front end surface of the fixture block A5, the left and right end surfaces of the fixture block A5 are respectively a locking surface 11 and a vertical surface C12, the locking surface 11 is matched with the inclined surface 8, the vertical surface C12 is matched with the vertical surface A7, the screw rod 4 is sleeved with the clamping, two supporting legs of the chucking spring 3 are respectively inserted into the mounting holes 10 of the latch A5 and the latch B6.

The screw rod 4 is further sleeved with a gasket, and the gasket is sleeved on the screw rod 4 and is positioned in the annular ring of the clamping spring 3. The main nut 1, the auxiliary nut 2 and the screw rod 4 are coaxially arranged.

The mounting method of the automatic clearance compensation nut comprises the following steps:

s1, horizontally placing the screw rod 4 on a workbench; screwing the main nut 1 onto the screw rod 4 from right to left; sleeving the clamping spring 3 on the screw rod 4 from right to left;

s2, respectively arranging two supporting legs of the clamping spring 3 in the mounting holes 10 of the fixture block A5 and the fixture block B6, and attaching a vertical surface C12 of the fixture block to a vertical surface A7 on the right side of the main nut 1; the worker simultaneously applies radial forces of opposite directions to the cartridge a5 and the cartridge B6 on the top surface of the cartridge;

s3, screwing the auxiliary nut 2 onto the screw rod 4 from right to left, ensuring that the inclined plane of the auxiliary nut 2 is close to the locking surface 11 of the fixture block, loosening the clamping spring 3 after screwing in place, and clamping and locking the main nut 1 and the auxiliary nut 2 under the elastic force action of the clamping spring 3. The utility model utilizes the principle of friction self-locking, and forms a fixed reverse acting force between the main nut 1 and the auxiliary nut 2 by means of the elasticity provided by the chucking spring 3 and the friction force between the fixture block and the main nut 1 and the auxiliary nut 2, and the reverse acting force ensures that the threads of the main nut and the auxiliary nut are always tightly matched with the threads of the screw rod 4, thereby realizing automatic clearance compensation; and because main nut 1, vice nut 2 and garter spring 3 bear the load simultaneously, consequently have the characteristics that bearing capacity is bigger.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides an automatic clearance compensation nut which characterized in that: the clamping fixture comprises a main nut (1), an auxiliary nut (2), a clamping spring (3), a screw rod (4), a clamping block A (5) and a clamping block B (6), wherein the main nut (1) and the auxiliary nut (2) are connected to the screw rod (4) in a threaded manner, both end faces of the main nut (1) are vertical faces A (7), one end face of the auxiliary nut (2) is an inclined face (8) and a vertical face B (9), the inclined face (8) and the vertical face A (7) are oppositely arranged, the clamping block A (5) and the clamping block B (6) are identical in structure, the clamping block A (5) and the clamping block B (6) are both positioned between the main nut (1) and the auxiliary nut (2) and are respectively positioned on two sides of the screw rod (4), a mounting hole (10) is formed in the front end face of the clamping block A (5), the left end face and the right end face of the clamping block A (5) are respectively provided with a locking face (11) and a vertical, perpendicular C (12) and perpendicular A (7) cooperate, the cover has chucking spring (3) on lead screw (4), and chucking spring (3) are located between fixture block A (5) and fixture block B (6), and two landing legs of chucking spring (3) cartridge respectively are in mounting hole (10) of fixture block A (5) and fixture block B (6).

2. The automatic backlash compensation nut as claimed in claim 1, wherein: and a gasket is sleeved on the screw rod (4).

3. The automatic backlash compensation nut as claimed in claim 2, wherein: the gasket is sleeved on the screw rod (4) and is positioned in the annular ring of the clamping spring (3).

4. The automatic backlash compensation nut as claimed in claim 1, wherein: the main nut (1), the auxiliary nut (2) and the screw rod (4) are coaxially arranged.