Detailed Description
2.4 Tool radius compensation 2D (TRC)
Basic logic functions: Tool Offset (W1)
86
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.4.10
Keep tool radius compensation constant
Significance
The "Keep tool radius compensation constant" function is used to suppress tool radius
compensation for a number of blocks, whereby a difference between the programmed and
the actual tool center path traveled set up by tool radius compensation in the previous blocks
is retained as the compensation.
It can be an advantage to use this method when several traversing blocks are required
during line milling in the reversal points, but the contours produced by the tool radius
compensation (follow strategies) are not wanted.
Activation
The "Keep tool radius compensation constant" function is activated with the G code
CUTCONON
(CUTter compensation CONstant ON) and deactivated with the G code
CUTCONOF
(CUTter compensation CONstant OFF).
CUTCONON
and
CUTCONOF
form a modal G-code group.
The initial setting is
CUTCONOF
.
The function can be used independently of the type of tool radius compensation (2
1
/
2
D, 3D
face milling, 3D circumferential milling).
Normal case
Tool radius compensation is normally active before the compensation suppression and is still
active when the compensation suppression is deactivated again.
In the last traversing block before
CUTCONON
, the offset point in the block end point is
approached. All following blocks, in which compensation suppression is active, are traversed
without compensation. However, they are offset by the vector from the end point of the last
offset block to its offset point. These blocks can have any type of interpolation (linear,
circular, polynomial).
The deactivation block of the compensation suppression, i.e., the block that contains
CUTCONOF
, is compensated normally. It starts in the offset point of the start point. One linear
block is inserted between the end point of the previous block, i.e. the last programmed
traversing block with active
CUTCONON
, and this point.
Circular blocks, for which the circle plane is perpendicular to the compensation plane
(vertical circles), are treated as though they had
CUTCONON
programmed. This implicit
activation of compensation suppression is automatically canceled in the first traversing block
that contains a traversing motion in the compensation plane and is not such a circle. Vertical
circle in this sense can only occur during circumferential milling.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...