An integrated hybrid drive double-cylinder series booster hydraulic press

Abstract

The invention discloses an integrated mixed-drive double-cylinder series booster hydraulic press, which belongs to the field of forging equipment. It replaces the driving mode of the three-phase asynchronous motor with the driving mode of the servo motor, and applies the transmission mode of the ball screw nut pair of the electric screw press to the traditional hydraulic press. First, it makes the traditional hydraulic press achieve faster stroke and return speed requirements, the rapid forging frequency of the traditional hydraulic press is increased; secondly, the servo drive technology improves the response speed, precision, and process flexibility of the control system, expands its process range, saves energy and reduces consumption, and simplifies the structure of the traditional hydraulic system; again , replacing the one-way plunger cylinder structure of the traditional hydraulic press with a double-cylinder series-type supercharged single-pass plunger cylinder, which can realize the pressurization effect and improve the forging efficiency; finally, the AC servo motor drives the screw nut pair to move, eliminating the need for the traditional press. The return cylinder and return structure of the press make the structure of the press simple and the load of the movable beam is small.

Description

technical field [0001] The invention belongs to the field of forging equipment, in particular to an integrated hybrid drive type double-cylinder series booster oil press. Background technique [0002] The free forging hydraulic press is a technical equipment that realizes press processing by matching the corresponding hydraulic system with the press body. In recent years, major developed industrial countries in the world have devoted themselves to the research of press fast forging to improve productivity. At present, the working form of the traditional free forging press in China is mainly a three-phase asynchronous motor to drive the oil pump, and the supporting hydraulic system provides the working pressure for the press, and the main cylinder and the return cylinder drive the movable beam to make the stroke and return movement. However, this work form has the following problems: First, the control circuit of the hydraulic system is not only complex in structure, slow in ...

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Problems solved by technology

However, this work form has the following problems: First, the control circuit of the hydraulic system is not only complex in structure, slow in response, seriously polluting the environment, and noisy in operation, but also takes up a lot of space and is inconvenient for maintenance; secondly, during the working process of the hydraulic machine, the three-phase asynchronous The motor drives the oil pump continuously, which leads to high energy consumption and large power loss; thirdly, the maximum speed of the press’s fast stroke and return stroke is about 250mm / s, which cannot achieve higher speed and high efficiency to improve productivity; finally, the hydraulic pressure of the press The control precision of the system is low, which limits the working process range of the hydraulic press to a certain extent

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