Torsion shaft surface rolling and strengthening machine tool hydraulic oil supply system

Abstract

The invention provides a torsion shaft surface rolling and strengthening machine tool hydraulic oil supply system. The hydraulic oil supply system comprises a motor pump assembly, an air cooler, a temperature transmitter, a heater, a check valve, a pressure sensor, an air filter, a fine filter, a stop valve, an energy accumulator, an electro-hydraulic proportional pressure reduction overflow valve, a pressure meter, a pressure relay, a three-position four-way electromagnet reversing valve, a digital display meter, a liquid level relay, an oil tank and the like. The hydraulic oil supply systemaccurately controls the hydraulic pressure of output oil of a hydraulic station through the electro-hydraulic proportional pressure reduction overflow valve, can adapt to changes of the hydraulic pressure of the output oil in a large range, has the overflow function, thereby ensuring the operation safety of the hydraulic station. The electro-hydraulic proportional pressure reduction overflow valveadopted to adjust the pressure is not inferior to the adjustment precision of servo pressure. Moreover, the cost is low, and the requirement for the cleanliness of oil liquid is lowered. Besides, theenergy accumulator is adopted for pressure maintaining, a great deal of heat generated from pumping operation is reduced to a great extent, and energy is saved.

Description

technical field [0001] The invention belongs to the field of hydraulic technology, and in particular relates to a hydraulic oil supply system for a torsion shaft surface rolling enhanced machine tool. Background technique [0002] As an important component of the vehicle suspension system, the torsion shaft needs to be strengthened on its surface and tooth root before use. The rolling machine tool is the equipment for strengthening its processing, and the hydraulic system that controls its rolling pressure is an important part of it. . At present, the main hydraulic systems mainly include the following types: [0003] (1) Three-stage hydraulic system is adopted, the rolling pressure changes in steps, automatic positioning, enhanced rolling and smooth rolling to achieve the improvement of rolling quality and straightening. [0004] (2) The rolling pressure is adjusted by electro-hydraulic servo control, and the precise adjustment of the rolling pressure is realized. The wo...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the complex and cumbersome maintenance problems of the electro-hydraulic servo system and to meet the needs of large-scale pressure adjustment, to provide a hydraulic oil supply system for torsion shaft surface rolling enhanced machine tools, which can not only provide constant pressure The high-quality oil ensures that the pressure does not overshoot and is free from external interference, and it can realize a wide range of pressure adjustments. The pressure of the accumulator is maintained to realize the effective use of energy and reduce the heat generation of the entire hydraulic system.

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