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Numerical control lathe custom manufacturer about nc lathe control mode

by:SNK     2020-09-04
CNC lathe manufacturer of custom talk about nc lathe control release date: 2019 - 01 - Author: 24 small make up click: CNC lathe is currently one of the more widely used nc machine tools. It is mainly used for shaft parts or plate parts inside and outside the cylinder, taper Angle of inside and outside the cone surface, complex rotary inside and outside surface and cylindrical, conical thread cutting, and can carry out cutting, drilling, reaming, reaming, boring, etc. Nc machine tool is programmed according to the prior processing program, automatically to be processing parts processing. We put the parts of the processing craft route, process parameters and tool trajectory, displacement, cutting parameters and auxiliary functions, according to the regulations of the CNC lathe custom manufacturer of CNC machine tool of instruction code and program format write into the processing program list, then this program list the contents of the records in the control medium, and then input to the numerical control machine tool numerical control device, thereby command machine parts. Half closed loop control system refers to the motor shaft and screw end of angular displacement, angular velocity detecting unit, through the position detection feedback device of feedback to the CNC device comparator compared with input instruction, using differential control the moving parts. Characteristic is convenient debugging, good system stability, compact structure, but in the mechanical transmission chain error is no correction or eliminated. Currently USES prop ball screw nut mechanism has good precision and accuracy stable and reliable, eliminate backward movement clearance agency, can satisfy most of the nc machine tool users, therefore has been widely used and become the preferred way of control. Closed loop control system is installed in the corresponding position of the machine moving parts linear or rotary detection device, will be directly measured displacement or angular displacement feedback to the CNC device comparator, compared with input order displacement, using differential control the moving parts. Advantage is that all the mechanical transmission chain link is contained within the closed loop, precision depends on the accuracy of detection device, more than half a closed-loop system. Defect is expensive, strict in institutions and transmission chain, or it will cause oscillation, reduce the stability of the system. Open loop control system is no position detection feedback device control mode, is characterized by simple structure, low cost, but difficult to achieve rapid control of the moving parts, widely used in stepper motor, low torque, high precision, speed, medium small devices drive control, particularly in microelectronic devices.
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