Electrical control method used for single electric motor dragging multiple plungers

Abstract

The invention relates to an electrical control method used for single-motor driving multi-punch stretch-forming flexible dies. According to the curved surface shape of the skin stretch-forming part of an aircraft, a punch height worksheet is generated in a computer through a skin stretch-forming numerical analysis and curved surface generation system; a multi-axis control manager is used for controlling a numerical servo driver to enter an automatic driving mode, and through switches among multiple clutches, controlling a driving unit servo motor to adjust the height of multiple punches of the die simultaneously so that the demanded skin stretch-forming part curved surface is shaped on the die surface. The invention adopts a plurality of preset EXCEL worksheets to realize the reproductionand storage of position information of all punches of the die; each driving unit of the die drives two adjusting units; each adjusting unit contains 32 punches; through clutch switch, each servo motor can adjust 64 punches. Therefore, the die system has the advantages of high performance and low cost. According to the fundamental mechanical and electrical system structures of the die, a series ofcontrol methods such as punch zero adjustment, punch selection and punch adjustment are provided.

Description

technical field [0001] The invention relates to an electric control method for driving multiple punches by a single motor. Background technique [0002] With the continuous development of sheet metal forming technology and the application of new technologies, as well as the increase in the complexity of the formed surface, the requirements for forming accuracy are becoming more and more precise, in order to meet the forming needs of various complex surfaces, people's demand for molds more and more. At present, flexible dies for stretch forming are widely used for stretch forming of complex curved surfaces, and the dies are composed of multiple punches. The conventional method is that each punch is equipped with a set of micro-servo drives and motors for one-to-one control and adjustment. Because the micro-servo drives and motors are expensive, this method makes the investment in the control drive system huge, resulting in high mold costs. Due to hundreds of sets of servo d...

AI Technical Summary

Problems solved by technology

The conventional method is to equip each punch with a set of micro-servo drives and motors for one-to-one control and adjustment. Due to the high cost of micro-servo drives and motors, this method requires a huge investment in the control drive system, resulting in high mold costs.

Due to hundreds of sets of servo drives and motors, it also leads to high system maintenance costs, inconvenient maintenance, and poor reliability

And in view of the limitation of punch size, its heat dissipation effect is also poor

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