Press machine driven by servo motor

Abstract

The invention discloses a press machine driven by a servo motor. The press machine comprises a cross beam body and a base, wherein a stand column is connected between the cross beam body and the base; the base is provided with a working platform and a lower die; a sliding block is connected with a transmission mechanism used for driving the sliding block to make reciprocating motion up and down; the transmission mechanism comprises the servo motor arranged on the top of the cross beam body, a zero-backlash elastic coupler, a speed reducer, and a gear mechanism, an eccentric gear and an eccentric connecting rod mechanism which are arranged in the cross beam body; the servo motor is connected with the speed reducer by the zero-backlash elastic coupler; an output gear of the speed reducer is meshed with the gear mechanism; the gear mechanism is connected with the eccentric gear which is connected with the eccentric connecting rod mechanism; the eccentric connecting rod mechanism is connected with the sliding block by a sliding block connector; and the speed reducer is provided with a mechanical brake. The press machine has the advantages that the energy consumption and the maintenance cost are reduced; the stamping motion and the forming force can be freely adjusted and accurately controlled; and full-load bottom dead centre pressure maintaining can be realized on any kinetic characteristic curve of the sliding block.

Description

technical field [0001] The invention relates to a press machine driven by a servo motor. Background technique [0002] For more than 40 years, the traditional mechanical press has only been improved on the multi-link technology to improve the kinematic characteristic curve of the press. With the determination of the linkage mechanism of the press, the unique movement track is obtained, and the pressure is determined. The forming characteristics of the machine. The unique forming characteristics of the press determine that it is difficult to form high-strength steel plates, composite forming materials, aluminum alloys, and difficult-to-form materials. The traditional mechanical press stores energy through the flywheel and provides stamping energy when the press is working. Due to the large inertia of the flywheel and the moving mechanism, it is impossible to control the movement, and the motor and the flywheel can only move at a constant speed. The speed of the kinematic me...

AI Technical Summary

Problems solved by technology

Traditional mechanical presses must be equipped with clutches and brakes with corresponding torques. Clutches and brakes consume a lot of energy during the working process, and the maintenance cost is high

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