NUMERICAL CONTROL PROGRAMMING METHOD AND ITS APPARATUS

摘要

A machining shape is created from a product shape and a material shape so that an appropriate tool direction can be automatically set, with which a finished area is the largest and an uncut amount of a recessed edge is the minimum even if a plurality of machinable tool directions are available. All tool directions capable of plane machining from a plane-machined shape extracted from the machining shape are acquired to evaluate an area which can be machined in each tool direction. In addition, a length of the recessed edge which cannot be machined in each tool direction is evaluated. A machining program for machining is created from the tool direction where the machinable area is the maximum and the length of the recessed edge which cannot be machined is the minimum.