| 摘要 |
PURPOSE:To reduce the conversion loss time by moving only the spindle when there is no interference through effective clearance obtained from the maximum effective projection of tool calculated on the basis of informations in first memory and the work position data read out from second memory. CONSTITUTION:When there is a replacement command of tools 26, 27 in the work program, main control section will retrieve the tool file to read out the lengths TL1, TL2 of the tool 27 mounted on the spindle 6 and the tool 26 to be replaced then the parameter memory is retrieved to read out the maximum projection length L3 of the work 29 of arm 7b. While the clearance CL against the work surface 29a is read out from the program to calculate the maximum projection of tool in the direction C and of ATC arm 7 T1, T2max, Amax under tool replacement thus to obtain the effective clearance EC from the maximum effective projection MAX at the machine side and if EC will exceed over 50, there is no interference with the work 29 thus to produce a simplified tool replacement command RTC to the machine control section.
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