Quick-idle-stroke and slow-pressurization main hydraulic cylinder translation type symmetric elbow rod servo press

Abstract

The invention discloses a quick-idle-stroke and slow-pressurization main hydraulic cylinder translation type symmetric elbow rod servo press; the press adopts a quick-idle-stroke and slow-pressurization-stroke mode; when a main slide block is in idle stroke, a second hydraulic pump is driven by a second servo motor, oil is pumped into a secondary hydraulic cylinder, and a piston in the secondary hydraulic cylinder downwards moves to drive a piston in the main hydraulic cylinder to communicate with a horizontal cylinder, an elbow rod and a slide block to downwards move to finish the idle stroke; when a nominal pressure stroke is begun, a first hydraulic cylinder is driven by a first servo motor, oil is pumped into a main hydraulic cylinder, a piston communicated with the horizontal cylinder moves to the left and right sides, and the slide block begins the nominal pressure stroke under the transmission of an elbow rod mechanism; and after the punching is finished, a reversing valve changes an oil inlet direction to finish a return process. The press is simple in structure and long in service life, and can adjust the strokes as needed.

Description

technical field [0001] The invention relates to the technical field of servo presses, in particular to a main hydraulic cylinder translational symmetrical toggle servo press with fast idle stroke and slow speed boosting. Background technique [0002] The traditional mechanical presses all adopt the crank-slider type transmission mechanism. The stamping stroke and the idle stroke adopt the same transmission structure, which requires a large motor power and the stroke is difficult to adjust due to the limitations of the crank-slider mechanism itself, and gradually cannot adapt to high speed. The requirements of precision stamping do not meet the characteristics of flexible equipment. In addition, in the process of sheet metal stamping, the speed of the idle stroke should be increased as much as possible and the speed of the slider should be reduced within the nominal pressure stroke to provide more time for the flow of the material when the workpiece is deformed. It is relate...

AI Technical Summary

Problems solved by technology

[0002] The traditional mechanical presses all adopt the crank-slider type transmission mechanism. The stamping stroke and the idle stroke adopt the same transmission structure, which requires a large motor power and the stroke is difficult to adjust due to the limitations of the crank-slider mechanism itself, and gradually cannot adapt to high speed. The requirements of precision stamping do not meet the characteristics of flexible equipment

In addition, in the process of sheet metal stamping, the speed of the idle stroke should be increased as much as possible and the speed of the slider should be reduced within the nominal pressure stroke to provide more time for the flow of the material when the workpiece is deformed. It is related to the nominal pressure stroke, so it is difficult to balance the relationship between the two, resulting in waste of energy in the idle stroke and damage to the sheet due to excessive punching speed in the nominal pressure stroke

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