23-03-2012, 02:27 PM
CNC TURNING CENTER AND TURNING CENTER PROGRAMMING
Presentation2.ppt (Size: 4.01 MB / Downloads: 123)
Introduction
Efficient programming is the key to benefiting from the expanded capability of CNC turning centers. The concept of "CNC process modeling" becomes clearer in these applications.
Think of it one CNC (computer numerical control) machine tool that will perform turning operations as well as cut slots, drill holes on either the front or sides perpendicular to the center line of the workpiece, or even cut profiles "wrapped" around the outside diameter. These operations need not be performed on another machine in another setup.
G-codes
G 00: rapid traverse
G 01:inear interpolation
G 02:circluar interpolation(clockwise)
G 03:circular interpolation(counter-clockwise)
G 04:dwell cycle
G 20:data is in inches
G 21:metric data input
G 28:return to reference point
G41 Tool Nose Radius (TNR) Compensation LeftFormat: N_ G41
The G41 command applies cutter compensation to the left hand side of the programmed tool path. This amount is equal to the current tool's nose radius value, which is stored in the Tool Offset Register table of the controller. This register number is referenced by the last two digits in the tool change command. For example, a tool change command with T0202 will reference the tool nose radius value in register #2.