Material entry tool path for cutting a starting hole that extends in the vertical axis

摘要

A method of generating control code for a CNC machine is described. The method includes the steps of: (1) generating in a computer a first plurality of coordinate values, xi, yi, zi, said first plurality of coordinate values representing a plurality of first connected line segments which surround a vertical axis, said first connected line segments gradually descending to a first predetermined depth, (2) generating in a computer a second plurality of coordinate values xj, yj, zj, said second coordinate values representing a plurality of second connected line segments which surround the vertical axis, said plurality of second connected line segments having a starting point at approximately the first predetermined depth, and gradually descending to a second predetermined depth greater than the first depth, and (3) converting the first and the second coordinate values to a code for controlling the CNC machine.

主权项

1. A method of generating control code for a CNC machine comprising the steps of:
generating in a computer a first plurality of coordinate values, xi, yi, zi, said first plurality of coordinate values representing a plurality of first connected line segments which surround a vertical axis, said first connected line segments gradually descending to a first predetermined depth, generating in a computer a second plurality of coordinate values xj, yj, zj, said second plurality of coordinate values representing a plurality of second connected line segments which surround the vertical axis, said plurality of second connected line segments having a starting point at approximately the first predetermined depth, and gradually descending to a second predetermined depth greater than the first depth, and converting the first and the second coordinate values to a code for controlling the CNC machine, wherein, when said code is executed in said CNC machine, a milling cutter mounted to a spindle of the CNC machine forms in a workpiece, a first hole based on the first plurality of coordinate values and a second hole based on the second plurality of coordinate values such that a ledge having a width greater than a chip thickness is formed in the workpiece at a boundary of the first hole and the second hole.