A planetary gear drive electric servo screw press with helical teeth and few tooth differences

Abstract

The invention discloses a helical-tooth few tooth difference planetary gear transmission electric servo screw press. After being powered on, servo motors drive a driving crank shaft to rotate, an inner-toothed ring plate is made to transversely move in a planar circular mode, then a center gear drives a lead screw shaft to slowly rotate, the rotation of the lead screw shaft enables a nut to drive a sliding block to move up and down, a die is installed on an upper die base and a lower die base, and the sliding block moves up and down to achieve plastic forming on a workpiece. According to the helical-tooth few tooth difference planetary gear transmission electric servo screw press, helical-tooth few tooth difference planetary gear transmission is adopted, the transmission ratio can be larger, and the precision requirement of large-scale metal parts is met; helical-tooth design is adopted, and the unbalance load on an input shaft is improved; the multiple servo motors are adopted, the power requirement of the press for each motor is lowered, and impact of the press on a power grid is small; the movement precision of a planetary roller screw is higher than that of a screw and a nut, and precision forming can be achieved through the roller screw in cooperation with a servo control system.

Description

technical field [0001] The invention belongs to the technical field of screw presses, and in particular relates to an electric servo screw press with helical gears and a planetary gear with few tooth differences. Background technique [0002] The screw press plays a very important role in the plastic processing of metal and non-metal materials. The screw press is recognized as the best die forging equipment for precision forging parts such as blades due to its good force and energy characteristics. It is used in automobiles, aviation, It is widely used in industrial fields such as national defense. Due to the different transmission methods, various types of screw presses such as friction, hydraulic, clutch, and electric have appeared one after another. Among them, the electric screw press has the shortest transmission chain and high efficiency, and it develops rapidly abroad, but develops slowly in China. With the rapid development of servo motors, a new type of electric s...

AI Technical Summary

Problems solved by technology

This kind of direct drive servo screw press has a simple structure and reduces the transmission chain of the traditional screw press, but it has high requirements on the servo performance and power performance of the direct drive motor. At present, there are almost no servo motors that can meet the needs of large screw presses. ;Because the servo motor is directly connected to the flywheel, the inertia of the flywheel will have an adverse effect on the motor during shutdown, reducing the life of the motor

Therefore, this direct-drive servo screw press is currently only suitable for small tonnage and non-metallic material processing occasions, and it is difficult to meet the market demand for screw presses

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