{\rtf1\ansi\ansicpg1252\deff0{\fonttbl{\f0\fnil MS Sans Serif;}} {\colortbl ;\red255\green0\blue0;\red0\green0\blue0;} \viewkind4\uc1\pard\qc\cf1\lang2057\b\f0\fs24 G73 Pattern Repeat Cycle\cf0 \par \pard \par \b0\fs20 The function of the G73 canned cycle is to permit the cutting of a programmed profile repeatedly. It is mainly used for machined parts where the rough shape has already been formed by either rough machining, forging or casting. \par \par \cf2\b A G73 command is written in the following format :\b0 \par \par \b G73 U (1) W (1) R ; \par G73 P ns Q nf U (2) W (2) F ; \par \par The definitions of P ns, Q nf, U (2), W (2) and F are the same as those in the G71 and G72 code explanations. \par where, \par U (1) is the depth of cut in the X axis (Radius value). \par W (1) is the depth of cut in the Z axis. \par R is the escaping amount (Retract) \par ns is the sequence number of the first block of the programmed finished shape. \par nf is the sequence number of the last block of the programmed finished shape. \par U (2) is the distance and direction of the finishing allowance in the X axis (Diameter value). \par \par W (2) is the distance and direction of the finishing allowance in the Z axis. \par F is the feedrate for Roughing. \par \b0 \par \cf1\b\fs24 \par \par \par }