Numerical control rolling machine tool for outer circle rolling of torsion shaft

Abstract

The invention provides a numerical control rolling machine tool for outer circle rolling machining of a torsion shaft. The numerical control rolling machine tool comprises a machine tool body, an outer circle rolling head, a dual centre locating device, a shifting fork connecting part, an internal spline clamp sleeve, a full closed protection cover, a displacement measurement system, a precise oilmist cooling system, a numerical control system and a hydraulic system. The outer circle rolling head of the machine tool adopts a multi-rolling-wheel symmetric rolling device structure, and when outer circle rolling machining of the torsion shaft is carried out, a workpiece bears multiple equal pressures in the radiation direction; a displacement sensor is mounted in a hydraulic cylinder of theouter circle rolling head, the change value of the rolling diameter in the outer circle rolling process is worked out through the rolling cylinder displacement value fed back by the displacement sensor, and intelligent judgment on the limiting position of the outer circle rolling arc end can be achieved; and the shifting fork connecting part replaces a traditional chuck, a transmission structure is optimized, meanwhile, worker operation is more convenient, the machine tool is more suitable for streamlined production operation, and the rolling machining efficiency is higher.

Description

technical field [0001] The invention relates to a numerically controlled rolling machine tool, in particular to a numerically controlled rolling machine tool used for rolling the outer circle of a torsion shaft. Background technique [0002] At present, most of the suspension devices of special vehicles adopt the torsion axle suspension system. The torsion shaft is an important part of the special vehicle suspension device. When the vehicle is running on an uneven road, the torsion shaft elastically twists and releases energy to achieve the purpose of buffering and shock absorption. During the working process, the torsion shaft is often subjected to large stress, large strain, impact and alternating torque loads, and is prone to fatigue fracture from the outer circle and the transition arc, which becomes a bottleneck restricting the overall performance of the vehicle. Therefore, it is very important to improve the working performance and fatigue life of the torsion shaft. ...

AI Technical Summary

Problems solved by technology

At present, ordinary torsion shaft cylindrical rolling strengthening machine tools have been widely used in production lines, but there are still many problems in the process of use, which is not conducive to large-scale production and development of products

[0004] The main problems are as follows: (1) The left end of the torsion shaft is clamped and positioned by a chuck, the structure is relatively complicated, and it is inconvenient to install the torsion shaft when the outer circle is rolled

(2) A single-wheel rolling device is used. During the rolling process, the torsion shaft will be subjected to a large radial force, which is easy to cause a large bending deformation of the torsion shaft during the rolling process, thereby affecting the outer circle of the torsion shaft. pressure effect

(3) The rolling limit position of the left and right ends of the outer circle of the torsion shaft requires manual judgment by the workers, which increases the labor intensity of the workers and affects the processing quality

(4) Workers are required to manually lubricate and cool the machine tool and the workpiece, which has the disadvantages of low efficiency, large oil pollution, and dangerous operation during processing.

(5) Cylindrical rolling processing and dedendum rolling processing are carried out on the same rolling machine tool. Cylindrical rolling processing and dedendum rolling processing cannot be carried out at the same time, which greatly reduces the rolling processing efficiency and increases the number of workers. Difficulty in operating the machine tool

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