Siemens SINUMERIK 840DE - Page 343

Tool offsets
8.11 Smooth approach and retraction
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
8-47
3
3
IRUDSSURDFKUHWXUQZLWK
DVWUDLJKWOLQH*
3
&RQWRXU
',65
$SSURDFKDQGUHWUDFWLRQVKRZQZLWKLQWHUPHGLDWH
SRLQW3ZLWKVLPXOWDQHRXVDFWLYDWLRQRIWRROUDGLXV
FRPSHQVDWLRQ
3
3
IRUDSSURDFKUHWXUQZLWK
4XDGUDQW*
3
&RQWRXU
3
3
IRUDSSURDFKUHWXUQZLWK
6HPLFLUFOH*
3
&RQWRXU
',65
',65
7RROFHQWHUSDWK
7RRO
7RRO
7RROFHQWHUSDWK
7RRO
7RROFHQWHUSDWK
Selecting the approach and retraction direction
Use the tool radius compensation (G140, basic setting) to determine the approach and
retraction direction with positive tool radius:
• G41 active → approach from left
• G42 active → approach from right
G141, G142 and G143 provide further approach options.
Description
The G codes are only significant when the approach contour is a quadrant or a semicircle.