Composite roll forming process of thick-wall deep-groove ring member

Abstract

The invention relates to a composite roll forming process of a thick-wall deep-groove ring member. The process is characterized by comprising the following steps of: (1) blank design of the ring member: based on the principle of constant volume, determining the size of ring member blank according to the size of the ring member and the rolling ratio; (2) groove design: designing the sizes of the working surfaces of a main roller and a core roller according to the rolling deformation conditions of the ring member and the equipment structural requirements; and determining the size and position of the working surface of an auxiliary roller according to the sizes of the ring member blank, ring member and the main roller; (3) design of forming parameters: successively designing the rotation speed of the main roller as well as the feed speed and rolling time of the main roller according to the rolling deformation conditions of the ring member and the size of the main roller; and (4) roll forming. Through the invention, reasonable design of the composite roll forming process of the thick-wall deep-groove ring member can be realized, normal stable roll forming of the thick-wall deep-groovering member is guaranteed, the rejection rate and defective rate of the rolling are reduced, and the energy-saving material-saving high-quality and efficient roll forming of the mechanical parts suchas duplicate gears, bilateral flanges, bilateral supporting wheel bodies, high-pressure ball valves and the like is realized.

Description

technical field [0001] The invention relates to a compound rolling forming process of a thick-walled deep-groove ring. Background technique [0002] figure 1 The geometric features of the ring shown are thick wall (the wall thickness is usually greater than the radius of the inner hole), small aperture, and deep grooves on the surface (the groove depth usually accounts for more than a quarter of the wall thickness), which is called a thick-walled deep groove ring ( The present invention is referred to as the ring for short). Duplex gears, double-sided flanges, double-sided roller bodies, high-pressure ball valve bodies and other mechanical parts commonly used in engineering are all such rings. The deep grooves on the surface of such rings are difficult to form directly by die forging. Usually, die forging is used for simple forming first, and then cut to the finished product size. This processing technology has high energy consumption and low material utilization rate. Th...

AI Technical Summary

Problems solved by technology

However, ring compound rolling forming is a complex deformation process, with many process parameters, each parameter has different and mutual influence on rolling deformation, and various rolling defects are prone to occur during rolling, resulting in waste and defective products

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