Path Milling - Cycle72 - Siemens SINUMERIK 840D sl Operating Manual

Programming a cycle
4.8 Contour milling
Parameters
Parameter
Contour selection
Contour name
Labels
Subprogram
Labels in the
subprogram
4.8.7

Path milling - CYCLE72

Function
You can machine open or closed contours with the "Path milling" cycle. Before you can mill
the contour, you must enter the contour. Machining can be performed in either direction, i.e.
in the direction of the programmed contour or in the opposite direction.
For machining in the opposite direction, contours must not consist of more than 170 contour
elements (incl. chamfers/radii). Special aspects (except for feed values) of free G code input
are ignored during path milling in the opposite direction to the contour.
Path milling on right or left of the contour
A programmed contour can be machined with the cutter radius on the right or left. You can
also select various modes and strategies of approach and retraction from the contour.
Approach/retraction mode
The tool can approach or retract from the contour along a quadrant, semi-circle or straight
line.
● With a quadrant or semi-circle, you must specify the radius of the cutter center point path.
● With a straight line, you must specify the distance between the cutter outer edge and the
You can also program a mixture of modes, e.g. approach along quadrant, retract along semi-
circle.
260
Description
Contour name
•
Labels
•
Subprogram
•
Labels in the subprogram
•
CON: Contour name
LAB1: Label 1
•
LAB2: Label 2
•
PRG: Subprogram
PRG: Subprogram
•
LAB1: Label 1
•
LAB2: Label 2
•
contour starting or end point.
Operating Manual, 01/2008, 6FC5398-7AP10-0BA0
Unit
HMI sl Turning