Direct drive type stroke control pressurizing type hydraulic machine of oil-less pump alternating current servo motor

Abstract

The invention discloses a direct drive type stroke control pressurizing type hydraulic machine of an oil-less pump alternating current servo motor. The direct drive type stroke control pressurizing type hydraulic machine of the oil-less pump alternating current servo motor uses a ball screw transmission mechanism and a servo drive manner of an alternating current servo motor. The flying wheel transmission theory of a spiral pressure machine is applied to the hydraulic machine so as to achieve that the screw ball rotates to drive a screw nut to downwards move in a high speed. Fast downward movement and returning of a sliding block of the hydraulic machine are performed as the alternating current servo motor directly drives the ball screw. A main and vice composite pressurizing cylinder is used for achieving low-speed force adding pressing. Meanwhile, stamping drive force is reduced. A main cylinder body is integrated with the sliding block. Liquid can be rapidly filled and discharged as a small piston and a small piston cavity rapidly move upwards and downwards. A double-pull-rod structure is movably connected with the main cylinder body to achieve flexible forging and pressing and high-speed stroke returning movement of the sliding block. The transmission efficiency of the hydraulic machine is greatly improved, positioning precision of the sliding block is high, fast descending speed and stoke returning speed can reach 700mm/s, the technical requirements of low-speed forging and pressing and high-speed idle stroke are met, working characteristics of the pressure machine can be flexibly adjusted, energy is saved and consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of forging press equipment manufacturing, and in particular relates to an oil-pump AC servo motor direct-drive type stroke control supercharged hydraulic press. Background technique [0002] The hydraulic press is a device that uses hydraulic transmission technology for pressure processing, and is one of the most widely used equipment in product molding production. The traditional hydraulic press generally includes an oil pump and a hydraulic cylinder transmission system. Its main disadvantage is that the speed is low, and the speed of the quick drop and return is only 100-200mm / s. In recent years, major industrialized countries in the world are trying to increase the speed of hydraulic presses in order to increase productivity. Improving the working speed of the hydraulic press means shortening the working cycle time of the hydraulic press. The key to reducing the working cycle time of the hydraulic press ...

AI Technical Summary

Problems solved by technology

Therefore, rapid forging hydraulic presses have appeared, that is, hydraulic servo presses using AC servo motors, such as WIDEMANN and W.A.WHITNEY in the United States, TRUMPF and NIXOORF DARADORN in West Germany, AIDA and NISSHINBO in Japan, and RASKIN in Switzerland. Manufactured hydraulic servo presses, turret punch presses or multi-station mechanical presses, the speed and flexible control of the existing hydraulic servo presses are mainly reflected in the control of the auxiliary parts of the machine tool such as the T-axis, worktable, automatic feeding, and air circuits. In fact, there are few direct and precise improvements to the transmission mechanism that significantly affects the working function of the press and the quality of the processed product.

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