A hardware-oriented interpolator for a N/C lathe is developed so as to generate control commands for the servo unit of the lathe. The hardware interpolator is implemented around the digital differential analyzer (DDA) together with its driving software to be compatible with Motorola's 16-bit μ-processor, MC-68000.
The interpolator realized in this way included two basic functions, i.e., linear interpolation and circular interpolation.
Based on this type of interpolator, various functions, which are positioning, linear & circular interpolation, dwell and thread cutting operation, are investigated. Also associated problems are interpreted.
