Mandrel power mechanism for cold rolling machine

Abstract

The invention relates to a mandrel power unit for a cold roller, which is provided with a rolling wheel, a supporting wheel, a core roll which is arranged between the rolling wheel and the supporting wheel, and a control system of the core roll. The mandrel power unit is characterized in that the core roll is provided with a driving rotary power unit, and the unit consists of a hydraulic oil cylinder, a motor, a position detecting device and a connecting body which are integrated into a whole and used for driving the core roll and the supporting wheel. The mandrel power unit for the cold roller not only improves the service life of the core roll but also solves the problem of scrape of the furrow bottom of a bearing ring, improves the finish degree of the processed curved surface of cold-rolling pieces, reduces the production time of abrasive machining, and greatly improves the price performance ratio of the cold roller.

Description

technical field [0001] The invention relates to a precision cold rolling machine tool, in particular to a dynamic structure of a cold rolling mandrel. Background technique [0002] Precision cold rolling ring forming technology is developed from metal plastic processing, metal extrusion calendering, metal high-speed rolling, etc. It has experienced several development stages of hot rolling, warm rolling, rough cold rolling, and precision cold rolling. The domestic application of cold rolling technology is concentrated in the bearing industry, and the processing of non-ferrous metal rings is also applied. [0003] Precision cold rolling adopts non-cutting processing technology. The geometric shape and process size of the processed bearing ring are close to the shape and size of the finished product, and only a small amount of grinding allowance is left. In the actual production process, the surface precision of the bearing groove is required to be high. In order to improve t...

AI Technical Summary

Problems solved by technology

However, every time the core roll is close to the rotating annular billet, due to the linear speed difference between the billet and the core roll, the contact area is line contact, the working environment of the core roll contact surface is harsh, and the wear is serious, which reduces the service life of the core roll

In addition, due to the wear process of the surface of the core roll, the dimensional tolerance drift caused by the wear of the core roll reappearing at the bottom of the channel of the finished cold-rolled piece is caused, and a scratch about 0.1 mm deep is left, which increases the processing time for the subsequent process. Difficulty, and also cause hidden dangers of reduced service life of finished bearings

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