Path Milling (Cycle72) - Siemens SINUMERIK Series Operating Manual

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Contour selection

Contour name

Labels in the subpro‐

EXTCALL / EES

When calling a part program via EXTCALL without EES, the contour can only be called via

"Contour name" and/or "Labels". This is monitored in the cycle, which means that contour calls

via "subprogram" or "labels in subprogram" are only possible if EES is active.

Path milling (CYCLE72)

You can mill along any programmed contour with the "Path milling" cycle. The function operates

with cutter radius compensation. You can machine in any direction, i.e. in the direction of the

programmed contour or in the opposite direction.

It is not imperative that the contour is closed. The following machining operations are possible:

● Inside or outside machining (on left or right of the contour).

● Machining along the center-point path

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.

Activating G40

We recommend that you activate G40 before the cycle call.

Operating Manual, 08/2018, 6FC5398-7CP41-0BA0

● Contour name

● Subprogram

● Labels in the subprogram

CON: Contour name

● LAB1: Label 1

● LAB2: Label 2

PRG: Subprogram

● PRG: Subprogram

● LAB1: Label 1

● LAB2: Label 2

Programming technological functions (cycles)

10.3 Contour milling