NUMERICAL CONTROLLER OPERATING BASED ON TABULAR DATA

摘要

A numerical controller controls a position of a control axis in synchronization with a reference value by using tabular data. When the numerical controller sequentially reads a command block from the tabular data and analyzes the command block so as to acquire a reference value and a coordinate value of a control point, the numerical controller outputs a reference value of the control point, which is shifted based on a shift amount specified by a shift command, in command blocks subsequent to the command block which includes the shift command, in a case where the shift command for shifting a reference value is included in the read command block.

主权项

1. A numerical controller which controls a position of a control axis in synchronization with a reference value by using tabular data for instructing a position of each control axis based on the reference value which is a time, a position of an axis, or a position of a spindle, the numerical controller comprising:
a read unit which sequentially reads a command block from the tabular data and analyzes the command block so as to acquire and output a reference value and a coordinate value of a control point; a reference value analysis unit which makes, if a command block read by the read unit includes a shift command for shifting a reference value, the shift of reference value valid in command blocks subsequent to the command block, and outputs the reference value of the control point which is shifted based on a shift amount specified by the shift command; and a distribution processing unit which produces a movement amount for an axis to be controlled by the tabular data, based on the reference value outputted by the reference value analysis unit and the coordinate value of the control point outputted by the read unit; wherein the reference value analysis unit is configured to directly output the reference value of the control point which is outputted by the read unit if the shift of a reference value is invalid.