A self-centering universal closing tool for self-locking nuts

Abstract

The invention relates to a self-centering general closing assembly for a self-locking nut. The self-centering general closing assembly comprises an adjusting bolt, a pressing plate, a top plate, a front lateral plate, a rear lateral plate, an upper pressing mould and a lower pressing mould, wherein equilateral right triangular or arc-shaped notches are arranged in mould surfaces of the upper pressing mould and the lower pressing mould; a closing base, which is composed of a base ring, closing blocks, a spring and forming blocks, is vertically arranged between the notches; the closing blocks are of bar shapes and a plurality of closing blocks are arranged; the closing blocks pass through the base ring along the radial direction of the base ring; the outer ends of the closing blocks are in vertical contact with the upper pressing mould and the lower pressing mould; the forming blocks are arranged at the inner ends of the closing blocks. The adjusting bolt is arranged on the self-centering general closing assembly for the self-locking nut and is used for adjusting the height of the upper and lower moulds, so that the closing blocks can be matched with different self-locking nuts; the closing blocks are in vertical contact with the mould surfaces and no included angle stress exists, so that the closing is high in precision and is difficult to break; the replaceable forming blocks are arranged on the inner sides of the closing blocks; the closing blocks can be applied to the rectangular, oval or thimble-shaped closing processing; various closing processing demands are met; the structure is simple; the applicability is strong.

Description

technical field [0001] The invention relates to a closing device for a self-locking nut, in particular to a self-centering universal closing tool for a self-locking nut. Background technique [0002] As a commonly used fastener, self-locking nuts have the main functions of anti-loosening and anti-vibration. Generally, the locking force is generated by squeezing and deforming the threaded part of the nut. There are two common forms of extrusion deformation: one is surface contact closing, including: oval closing and rectangular closing. The principle is: extrude the threaded end of the nut into an oval or rectangular shape through tooling. The second is point contact closing, including: two-point closing and three-point closing. The principle is: the threaded end of the nut is squeezed and deformed by the thimble. This structure is used for the final closing link of this type of nut. [0003] The patent document CN201979015U discloses a nut closing device, which includes a...

AI Technical Summary

Problems solved by technology

Although it solves the purpose of adapting the closing tooling and nuts of different sizes and various closing effects, the direction of the tightening force of the core parts of the module "the inner cone of the sleeve" and the "closing block" is different from that of the closing block and the closing block. The base of the table is not in the same straight line (the direction of the support force of the point-surface contact is perpendicular to the contact surface), and there is an included angle between the support force of the inner cone surface of the sleeve and the force of the tightening end of the nut. The slope of the inner cone surface of the sleeve is related, which makes the closing block and the base of the closing table easy to break during the closing process, and also affects the closing accuracy

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