MACHINING ERROR CORRECTION MATHOD AND SYSTEM FOR CNC MACHINE TOOL

摘要

The present invention relates to a machining error correction controlling method for a numerical control machine tool. Especially, the present invention is for providing a method of automatically controlling tool offset for preventing machining errors of a workpiece caused by the abrasion of a tool. The present invention includes a step of calculating an error value (a) by comparing a size value of the workpiece inputted by a size measuring device with a reference size; converting the error value (a) and an integer (n) between 0 to 8 into the maximum (n) square root which satisfies 2 (n)= (a); and storing 2 (n) if the converted value is 0 or repeatedly calculating the converted value becomes 0 if the converted value is not 0 by returning the remaining value (a) and converting the integer into the maximum (n) square root. Additionally, the present invention includes a step of outputting the converted (n) square value of the (a) value into signals by using at least one among first to ninth contact points of the machining tool, which are preset corresponding to the converted (n) square value of the (a) value and a step of calculating and converting the (n) square value of the (a) value inputted through the prior steps into an integer and outputting the converted value to a control unit controlling the tool offset. [Reference numerals] (10) Size measuring device;(20) Signal conversion unit;(30) Conversion output unit;(40) Compensation value output unit;(50) Control unit;(AA) 2^0 = output 1;(BB) 2^1= output 2;(CC) 2^1= output 3;(DD) 2^1= output 4;(EE) 2^1= output 5;(FF) 2^1= output 6;(GG) 2^1= output 7;(HH) 2^1= output 8;(II) 2^1= output 9;(JJ) Negative number = output 10;(KK) Input 1 = 2^0;(LL) Input 2 = 2^1;(MM) Input 3 = 2^2;(NN) Input 4 = 2^3;(OO) Input 5 = 2^4;(PP) Input 6 = 2^5;(QQ) Input 7 = 2^6;(RR) Input 8 = 2^7;(SS) Input 9 = 2^8;(TT) Input 10 = negative number