Servo motor mounting structure of servo press machine

Abstract

The invention belongs to the technical field of press machine tools and particularly relates to a servo motor mounting structure of a servo press machine. The servo motor mounting structure comprisesa machine body; and a crankshaft with a main gear is arranged in the machine body. The servo motor mounting structure is characterized in that an adapter flange is arranged on the machine body, and the outer side of the adapter flange is connected with a servo motor; a motor shaft of the servo motor is connected with a gear shaft, and the gear shaft penetrates through the adapter flange to be meshed with the main gear; a bearing assembly of the gear shaft is arranged on the side, located in the machine body, of the adapter flange, and sealing assemblies are arranged between the adapter flangeand the gear shaft and between the adapter flange and the machine body; the end part of the gear shaft extends out of the machine body and is connected with a brake outside the machine body; and a sealing end cover for supporting the gear shaft is arranged on the machine body. The servo motor mounting structure is high in connection strength, good in dynamic response precision, convenient to install and convenient to disassemble and maintain subsequently.

Description

technical field [0001] The invention belongs to the technical field of press machine tools, and in particular relates to a servo motor installation structure of a servo press. Background technique [0002] The main trend of the future development of the metal plastic forming industry is light weight, energy saving, high stability, and high productivity. The supporting stamping equipment should also actively move toward precision, high speed, systematization, flexible production of a variety of small quantities, and rapid production. With the development of mold change, material saving, easy maintenance and energy saving, medium and high-end mechanical presses represented by intelligent numerical control and servo drive presses will usher in unprecedented development opportunities. According to data from the Forging Press Association, domestic servo mechanical presses currently account for less than 3% of the total mechanical presses, and the trend of servoization is obvious,...

AI Technical Summary

Problems solved by technology

However, this type of structure is not so suitable for use on servo presses, because the motors of servo presses are different from asynchronous motors. Servo press motors need frequent acceleration and deceleration and forward and reverse conversion during work. If a flat key connection structure is used , due to the low strength of the key connection and the existence of a gap, the gap will become larger and larger after working for a period of time, which will make the dynamic response accuracy of the servo motor worse, so that the comprehensive accuracy performance of the machine tool cannot be guaranteed

If the flat key connection adopts too tight fit, it is very inconvenient to assemble and disassemble, and even difficult to install

Moreover, the entire motor is fixed by the base, so it is difficult to ensure the coaxiality of the motor shaft and the gear shaft after installation. Due to the rigid connection, it is difficult to guarantee the accuracy of the motor when it is running at high speed.

[0005] The second is that the shaft of the servo motor is extended to form an optical shaft structure. The gear shaft and the motor shaft are connected by a coupling, and the motor is fixed by the base. Due to the connection through the coupling, there is a certain degree of flexibility, so the base fixing method is relatively acceptable, but Due to the addition of a coupling with a large inertia at the output shaft end, the passive inertia is greatly increased, and the energy consumption of the servo motor is increased and the efficiency is reduced.

Its manufacturing cycle is long, and there are slight problems in the manufacturing process, and rework is very troublesome

The subsequent maintenance of the brake or the disassembly of the gear shaft requires the motor to be disassembled and reassembled. It is basically unrealistic to repair on site.

Images