Intelligent numerical control method with three-stage process self-optimization function

Abstract

The invention belongs to the technical field of digital control of electromechanical integration, and relates to an intelligent control method with the three-stage processing self-optimization function. The intelligent control method comprises the following steps: firstly, optimizing and an executing processing program according to optimum processing parameters; secondly, detecting the current and the power supply voltage of a main motor in real time during processing, taking the current as a decision-making value, the voltage as an supplementary means and the variation delta af of the feeding speed af as a system adjustment value, and realizing closed-loop feedback fuzzy control of the processing process; and thirdly, taking a trigger signal of a three-dimensional measuring head as an input mark value after completing the procedure of detection of geometrical information of workpieces, reading the actual coordinate of a current measuring point after detecting the input mark value of the measuring head, estimating errors of processed workpieces after measuring all the measuring points, and performing secondary self-adaptive optimization and adjustment on the processing program. The intelligent control method can realize self-optimization of a digital control program; and a digital control system can acquire shape and position error information of the workpieces in time, so that parameters in subsequent technology are convenient to adjust.

Description

Intelligent NC method with self-optimization function of three-level machining technical field The invention belongs to the technical field of mechanical and electrical integration numerical control, and in particular relates to an intelligent numerical control system based on the integration of state monitoring, real-time optimization and fuzzy control based on machine tool processing sites. Background technique The CNC system is the core control unit of the CNC machine tool, which can fully control the movement and processing process of the machine tool. And has the following functions: number of control axes and linkage axes; interpolation function; feed function; spindle function; tool function; tool compensation; mechanical error compensation; operation function; program management function; character graphic display function; auxiliary programming function; Automatic diagnosis and alarm function; communication function. For a NC machining program, if there is a logi...

AI Technical Summary

Problems solved by technology

These equipments play a key and even core role in processing quality and efficiency, and are often quite expensive to manufacture; even some processed products, due to their complexity, precision or large-scale features, have a unit cost or processing cost that is quite astonishing.

In this case, damage to processing equipment or product scrapping or even just a reduction in processing efficiency can cause huge losses

Traditionally, the setting of processing parameters is based on human experience or related manuals, but it is difficult to give better processing parameters for beginners or even skilled operators, and because the setting of processing parameters involves Human operation, there may be hand errors, etc., which may give wrong or even endanger the processing parameters of machine tools, tools and workpieces, and these cannot be detected by the system's decoding error detection

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