A servo screw press driven independently by multiple motors and multiple screws

Abstract

The invention discloses a multi-motor, multi-screw and independently-driven servo screw press. The multi-motor, multi-screw and independently-driven servo screw press comprises an upper machine body, a lateral shell and a lower machine body. Two servo motors are symmetrically fixed to the upper machine body. A pinion is mounted on an output shaft of each servo motor. The two pinions are engaged with an inertia wheel at the same time, and teeth are machined on the outer side of the inertia wheel. The inertia wheel is mounted on a nut. The nut is matched with a lead screw through a planetary pin roller. The lower end of the lead screw is connected with a sliding block. The sliding block is matched with guide rails on the two sides. The guide rails are fixed to the lateral shell. A lower die fixed to the lower machine body is matched with the sliding block. During work, the pinions are driven by the servo motors to rotate, and the two pinions drive the inertia wheel so as to drive the nut to make rotational movement; the nut, the planetary pin roller and the lead screw form a planetary pin roller transmission structure, the rotational movement of the lead screw is limited, so that the sliding block is driven to move up and down in a reciprocating mode, and forging and pressing are completed. The multi-motor, multi-screw and independently-driven servo screw press is high in bearing capacity, unbalance load resistance and transmission efficiency and suitable for machining pieces difficult to form or forging of multiple die cavities.

Description

technical field [0001] The invention belongs to the technical field of screw presses in mechanical forming equipment, and in particular relates to a servo-type screw press independently driven by multiple motors and multiple screws. Background technique [0002] The screw press is a plastic forming equipment that uses the driving device to store energy in the flywheel, uses the screw slider mechanism as the actuator, and relies on kinetic energy to work. According to the different driving methods, it can be roughly divided into four categories: friction screw press, hydraulic screw press, electric screw press and clutch screw press. At present, the existing electric screw presses at home and abroad often use the form of a single screw. The rotation of the motor drives the flywheel to rotate at high speed to store energy. The screw is connected with the flywheel or the motor shaft, and the nut is connected with the slider. Restricted, its up and down reciprocating linear mot...

AI Technical Summary

Problems solved by technology

For electric screw presses with this structure, since the nut and the slider are firmly connected as a whole, the height of the slider can often not be made too small, so that the stroke of the slider is limited.

At the same time, due to the single-screw structure, when performing multi-cavity forging, an eccentric load will be formed, which will cause a large impact on the screw and affect the precision of the workpiece

The transmission efficiency of the screw-nut combination is also low, and the load-carrying capacity is poor

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