A mechanical-hydraulic compound energy-saving servo hydraulic machine with a toggle mechanism

Abstract

A mechanical-hydraulic composite energy-saving servo hydraulic machine with a toggle rod mechanism comprises a work table which is fixed on a base. A machine body is of a three-beam and four-column structure, the four stand columns are hollow, pull rods penetrate through the inside of the stand columns, the two ends of each pull rod are fixed on an upper beam and the base respectively through tightening nuts, guide rails are fixed on the stand columns, and linear guide rail sliding blocks are fixed on the outer walls of press sliding blocks and slide up and down on the guide rails. By combining high control precision of a servo motor, high operation speed of a mechanical structure and large load of a hydraulic cylinder, idle stroke is driven by the independent servo motor and the mechanical structure, and work stroke is driven by a hydraulic system. The mechanical-hydraulic composite energy-saving servo hydraulic machine can lower power of the servo motor, improve the energy utilization rate and improve flexibility.

Description

Technical field [0001] The invention relates to a hydraulic machine, in particular to a mechanical hydraulic composite energy-saving servo hydraulic machine with a toggle mechanism. Background technique [0002] The press is a kind of equipment widely used in the field of pressure forming, which can complete various forming processes such as drawing, punching, forging, and bending. Common presses are mechanical presses and hydraulic presses. The mechanical presses mainly use ordinary motors to drive the crank slider mechanism to complete reciprocating mechanical movement. The mechanical presses are characterized by fast movement speed and simple structure. After the design is completed, the slider movement curve is also established, which reduces the versatility of the mechanical press, and the traditional mechanical press generally has a flywheel and a clutch that consume 20% of the total energy. The hydraulic press is powered by a hydraulic pump, and the slider movement speed ...

AI Technical Summary

Problems solved by technology

[0003] With the development of servo control technology, more and more presses directly driven by servo motors are used in the pressure processing industry. However, high-power servo motors are expensive, and the domestic manufacturing level is low. The core components mainly rely on imports. In order to improve the servo The nominal pressure of the press generally requires a large-scale and complex booster mechanism, which increases the design difficulty and cost, and hinders the promotion and development of domestic servo presses

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