Siemens SINUMERIK 840D sl, Function Manual

Page: 1838 / 2184

Detailed Description
2.3 Tool cutting edge
Basic logic functions: Tool Offset (W1)
50
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.3.10 Tools with a relevant tool point direction
Up to SW 4.x
The change from
G40
to
G41
/
G42
or vice versa is treated as a tool change for tools with
relevant tool point direction. This causes a preprocessor stop when a transformation (e.g.,
TRANSMIT
) is active, and may lead to deviations from the intended part contour.
SW 5 and higher
The following changes have been made:
1.
The change from
G40
to
G41
/
G42
or vice versa is no longer treated as a tool change.
Therefore, a preprocessor stop no longer occurs with
TRANSMIT
.
2. The straight line between the tool edge center points at the block start and block end is
used to calculate intersection points with the approach and retraction block. The
difference between the tool edge reference point and the tool edge center point is
superimposed on this movement.
For approach and/or retraction with
KONT
, the movement is superimposed in the linear
subblock of the approach or retraction movement. Therefore, the geometric conditions for
tools with or without relevant tool point direction are identical. Deviations from previous
behavior occur only in relatively rare cases where the approach or retraction block does
not intersect with an adjacent motion block:
/DVWSRVLWLRQRIFXWWLQJHGJHFHQWHUSRLQW
RQWKHFRQWRXU6:DQGKLJKHU
3URJUDPPHGUHWUDFWLRQEORFN
%ORFNZLWKRXW
,QWHUVHFWLRQ
ZLWKSUHFHGLQJEORFN
7RROHGJHUHIHUHQFHSRLQW
/DVWSRVLWLRQRIFXWWLQJHGJHFHQWHUSRLQW
RQWKHFRQWRXUXSWR6:[
&HQWHUSDWK
7RROHGJHUHIHUHQFHSRLQW
7RROHQGSRVLWLRQ
&XWWLQJHGJHFHQWHUSRLQW
Figure 2-14 Retraction behavior for tool with relevant tool point direction