Method for controlling stepping motor of desktop type intelligent digital control process system
A stepping motor and processing system technology, applied in the field of control, can solve the problems of too fast acceleration and deceleration, affecting the running stability and machining accuracy, shortening the service life of the machine tool, etc. Effect
Inactive Publication Date: 2010-10-20
上海五爱科技发展有限公司
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Problems solved by technology
[0003] Small CNC machine tools and machining centers are limited by volume and weight, and their mechanical structures are relatively thin. When using the existing CNC system for control, if the acceleration and deceleration are too fast or the start and stop are frequent, it will seriously affect the stability of operation and processing accuracy. Even shorten the service life of the machine tool
In order to ensure the machining accuracy and machine tool life, small CNC machine tools often adopt the method of reducing the running speed to improve the stability of running, so the processing efficiency is far from that of large machining centers.
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[0012] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.
[0013] The stepper motor control method of the desktop intelligent numerical control processing system of the present invention is based on the ARM chip to control the operation of the stepper motor by outputting pulses in real time, and divides the operation process of the stepper motor into three stages of acceleration, uniform speed and deceleration. Experiments have proved that, The speed curve must be at least two-order continuous, that is, the acceleration must be continuous and the specified boundary conditions must be met at the same time, in order to keep the transition of the desktop intelligent CNC machining system stable, and the exponential acceleration and deceleration curve is relatively close to the operating characteristics of the stepping motor. The curve takes the appro...
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The invention discloses a method for controlling a stepping motor of a desktop type intelligent digital control process system. In the method, the operation of the stepping motor is controlled by outputting pulses in real time based on an ARM chip and the operating process of the stepping motor is divided into three stages of acceleration, constant speed and deceleration, wherein the stepping motor is accelerated from a first speed to the maximum speed of the stepping motor at the acceleration stage; then the stepping motor operates at the maximum constant speed at the constant speed stage; and the stepping motor enters a deceleration stage and the speed of the stepping motor is reduced to be a second speed. The method has the advantages of improving the efficiency of a multi-shaft linked sculpturing machine, increasing the moving speed of a sculpturing machine tool and improving the stability of the sculpturing machine tool.
Description
technical field [0001] The invention relates to a control method, in particular to a stepping motor control method of a desktop intelligent numerical control processing system. Background technique [0002] Multi-axis linkage CNC system is widely used in engraving, CNC machine tools, medical equipment and other fields. As a high-tech product combining machine, electricity and calculation, multi-axis linkage CNC engraving machine can be used in jade carving, stone carving, woodworking, mold, advertising, seal, production and other industries, and has extensive market value. The multi-axis linkage CNC engraving machine uses a stepping motor to drive the operation of the entire engraving machine. The characteristic of the stepping motor is that it can be positioned quickly and accurately, and there is no accumulated error without losing steps or overstepping. However, due to the change of the running direction and the change of the running speed, the stepper motor may be out o...
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IPC IPC(8): H02P8/14
Inventor 章云李齐
Owner 上海五爱科技发展有限公司