Numerical control electric screw press

Abstract

The invention discloses a numerical control electric screw press which comprises a machine body (3), a main screw rod (209), a main nut (501), a motor (1), a flywheel (205), a slider (7) and a transmission system (8) which is arranged between the motor (1) and the main screw rod (209); the top of the main screw rod (209) is provided with a clearance adjusting mechanism (9); lubricating systems (5)are arranged between the machine body (3) and the main screw rod (209) as well as between the machine body (3) and the main nut (501); and the outer side of the motor (1) is provided with a cooling system (10) and a braking system (2). For the numerical control electric screw press, reliable transmission of a torque can be realized through a transmission mechanism, and the numerical control electric screw press has the characteristic of flexibility and adjustability; in addition, through the cooling system, the heat dissipation effect of the motor is good, the fault rate is low, the adjustingprecision of an axial clearance of the main screw rod is high, and the numerical control electric screw press is convenient and rapid; and meanwhile, instant braking can be realized, the power transmission performance of the spiral press as well as the reliability and the stability of the system are greatly improved.

Description

technical field [0001] The technical field of screw press equipment of the present invention, more specifically, relates to a numerically controlled electric screw press. Background technique [0002] Die forgings are widely used in industrial fields such as automobiles, aviation, and national defense. In recent years, the precision of die forgings has become higher and higher, and the die forging process has developed towards precision forming. The press can no longer meet the requirements. The screw press is recognized as the best forging equipment for precision die forging for blades and other parts due to its good force and energy characteristics, and it is also an ideal molding equipment for powder molding parts. The screw press is a forging equipment that uses a screw and a nut as a transmission mechanism to transmit the energy of the flywheel. The basic part is composed of flywheel, screw rod, nut, slider and fuselage. Through transmission devices such as friction,...

AI Technical Summary

Problems solved by technology

Since the motor works under the condition of high current and high torque for a long time, and starts and brakes frequently, the traditional air cooling device cannot reduce the heat dissipation problem of the motor. If the motor overheats, the efficiency will be reduced, the alarm will stop, and even the motor will be burned, and the production line will be shut down. Wait for a series of questions

[0005] (2) Using gear transmission, the transmission efficiency is reduced, and the pinion is easy to wear, which has a certain impact on the control accuracy

[0006] (3) Axial clearance adjustment is very cumbersome and inefficient: first remove the ordinary flat key block, then remove the lock nut, then remove all the screws with a large number of pressure rings, then remove the pressure ring, and then pad the slider to lift For the main screw, use a meter to check the wear data of the thrust bearing, and calculate the thickness of the required adjustment gasket. The process is cumbersome and complicated, and there are safety hazards in the operation process

[0007] (4) Insufficient lubrication between the main screw and the main nut leads to large friction, which intensifies the wear of the copper alloy main nut and affects the transmission efficiency. At the same time, the temperature of the screw and nut increases, the parts expand and deform, and even the main screw transmission pair locks up, damage

[0008] (5) Whether it is a CNC electric screw press or a friction press, there is a problem of flywheel braking. When the motor stops rotating, the flywheel will continue to run at a certain angle after braking due to the inertia of the transmission system, and then completely stop

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