Assume: d01 = 5mm – Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set User Manual

Page 524

Cutter Diameter Compensation
(G40, G41, G42)

Chapter 21

21-6

Unless Cutter Compensation is active, when a program recover is
performed, the control automatically returns the program to the beginning
of the block that was interrupted. In the case of power failure, the control
will even reselect the program that was active prior to the interruption.

Figure 21.4

Tool Radius Wear

Initial tool radius

Tool radius wear amount

G40 (cutter compensation cancel) is active when power is turned on,
E-STOP is reset, when the control is reset, or when an M02 or M30
end-of-program block is executed.

Example 21.3

Cutter Compensation Sample Path

Assume: D01 = 5mm

Program Block

Comment

G00X0Y0;

Establish current position as X0Y0

N1G00G42X20.Y20.D01;

Rapid to start and set compensated right

N2G01X70.F1000.;

Feed move 1

N3G03X82.99Y42.5R15.;

Move 2

N4G01X72.99Y62.5;

Move 3

N5G03X59.33Y66.16R15;

Move 4

N6G02X38.521Y69.797R16;

Move 5

N7G01X20.Y95.;

Move 6

N8Y71.18;

Move 7, creates a generated block

N9G02Y48.82R15.;

Move 8

N10G01 Y20.;

Move 9, cutter moves away from path at
end