Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 595)

Chapter
23
23-1
Using Post Milling Cycles
This chapter describes how to use G88.3 and G88.4 to program post
milling cycles. Use this table to find the information:
Information on: On page:
Rectangular Post Roughing Using G88.3 23-2
Circular Post Roughing Using G88.3 23-5
Post Milling Finishing Cycle ( G88.4) 23-7
Rectangular Post Roughing Using G88.4 23-8
Circular Post Finishing Using G88.4 23-11
Use the G88.3 post milling roughing cycle to rough out material outside of
a specified area or post.
Important: The active plane is selected using G17, G18, or G19. In this
chapter it is assumed that G17, the XY plane, is selected as the active
plane.
Important: Tool length, work coordinates, and diameter offsets must be
entered and active prior to the G88 block. The radius/diameter of the tool
can not exceed the length of the shortest side of the rectangular pocket. If
it does, the control enters Cycle-Stop mode and displays the error message
“TOOL RADIUS TOO LARGE” on the CRT.
These features are prohibited during execution of pocket milling cycles:
MDI mode
Tool offset changes through the offset softkey
Work coordinate offset changes through the offset softkeys
The following subsections cover using the G88.3 roughing cycle for
rectangular or circular posts.
23.0
Chapter Overview
23.1
Post Milling Roughing Cycle
(G88.3)