Fall-away type screw rolling machine

Abstract

The invention provides a fall-away type screw rolling machine, relating to the technical field of rolling forming of screw threads and aiming to avoid cracking pipe fittings and increase the full ratio of screw-thread teeth. The screw rolling machine comprises an engine base, a screw rolling wheel disc and a main shaft, wherein a straight-line guide rail is fixedly arranged at the upper end of the engine base and a slide frame is arranged on the straight-line guide rail; the screw rolling wheel disc is installed on the slide frame, the main shaft is installed at the upper end of the engine base and clamping discs are arranged at two ends of the main shaft; the slide frame is provided with an inclined block and the upper end face of the inclined block is an inclined plane; the screw rolling wheel disc is provided with a curve disc and a small front disc; the curve disc is provided with at least three centrifugal arc-shaped wheel framework limiting strips; the small front disc is provided with at least three wheel frameworks which slide along the radial direction and a pulley which tightly supports against the upper end surface of the inclined block is arranged at the outer edge of the small front disc; each wheel framework is provided with a wheel framework limiting groove which is matched with each framework limiting strip; and a screw rolling wheel is arranged at the inner end of each wheel framework. The screw rolling machine provided by the invention is particularly suitable for rolling pipe screw threads on seamed or seamless thin-wall pipe fittings.

Description

technical field [0001] The invention relates to thread rolling forming technology, in particular to the technology of a progressive retreat thread rolling machine. Background technique [0002] The thread rolling machine is a multifunctional cold rolling forming machine tool, which is used to process threads on workpieces in a cold state. [0003] The thread rolling method of the existing thread rolling machine is progressive rolling. Whether it is radial rolling or axial rolling during work, the rolling thread is formed by continuously increasing the feed force. This thread rolling When the machine is processing pipe fittings with thinner pipe walls and seamed pipe fittings, the processed pipe fittings are prone to cracking or deformation with the increase of feed force, and the radial force during processing is manually controlled feed. The fullness rate of thread teeth produced by pressing is also low. Contents of the invention [0004] In view of the above-mentioned ...

AI Technical Summary

Problems solved by technology

[0003] The thread rolling method of the existing thread rolling machine is progressive rolling. Whether it is radial rolling or axial rolling during work, the rolling thread is formed by continuously increasing the feed force. This thread rolling When the machine is processing pipe fittings with thinner pipe walls and seamed pipe fittings, the processed pipe fittings are prone to cracking or deformation with the increase of feed force, and the radial force during processing is manually controlled feed. The fullness rate of thread teeth produced by pressing is also low

Images