What G code corresponds to linear interpolation in CNC machining?

Linear interpolation in CNC machining is represented by G01. This code is specifically used to instruct the CNC machine to move the tool in a straight line at a defined feed rate. It allows for precise control over the path that the tool takes during machining operations, facilitating effective cutting and shaping of materials.

The G01 command is fundamental because it ensures that the movement from one point to another can occur smoothly and accurately, which is critical for achieving the desired dimensions and surface finish on the workpiece.

The other codes mentioned serve different purposes: G02 is used for circular interpolation in a clockwise direction, G70 is typically associated with finishing cycles or canned cycles for turning operations, and G96 is linked to constant surface speed control. Each of these codes specializes in a certain type of motion or operation, distinct from the linear motion commanded by G01.