CORRECTING METHOD FOR OUTERRDIAMETER TAPER ANGLE OF THREADING PART OF WORKPIECE IN NUMERIC CONTROL MACHINE FOR TAPER THREADING WORK

摘要

PURPOSE:To make it possible to correct the taper angle of actual cutting according to the material of a workpiece easily, by making an external, manual adjustment of the feed extent of the threading tool of a numeric control machine in the radius direction of a threading part. CONSTITUTION:The taper angle of a taper screw continuously differing in three stages in shown by 10. Numeric control machine 30 is brought under automatic control of tool path information stored in the numeric controller to cut a workpiece actually and its tape angle is measured and inspected to find a correction value. Digital switch 32 is operated and the workpiece is actually cut by the above-mentioned numeric control machine 30 again according to the correction value of the taper angle, so that the tool path information stored in the numeric controller will be corrected by the correction value set by digital switch 32.