Siemens SINUMERIK 840D sl Function Manual page 1463
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Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
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Toolholder from G code of group 53
The G codes of group 53 (TOFRAME, TOROT, etc.) can be used to define a frame such that an
axis direction (Z, Y or X) in this frame is equal to the current tool orientation.
The G code of group 6 (G17 - G19), which is active at the time TOFRAME is called, determines
the tool orientation.
If no toolholder is active, or if a toolholder is active but does not cause the tool orientation to
change, the Z direction in the new frame is:
● The same as the old Z direction with G17.
● The same as the old Y direction with G18.
● The same as the old X direction with G19.
These directions are modified accordingly for rotating toolholders. The same applies to the
new X and Y directions.
Instead of TOFRAME or TOROT, one of the G codes TOFRAMEX, TOFRAMEY, TOROTX, or
TOROTY can be used. The meanings of the axes are interchanged accordingly.
Group change
Changing the G code from group 42 (TCOABS, TCOFR, etc.) causes recalculation of the tool
length components.
The (programmed) angles of rotation stored in the toolholder data are not affected, with the
result that the angles originally stored in the toolholder data are reactivated on a change from
TCOFR to TCOABS.
Read rotary angle (α
The angles currently used to calculate the orientation can be read via system variable
$P_TCANG[n] where n = 1 or n = 2.
If two permissible solutions (i.e. a second valid pair of angles) are available for a particular
orientation, the values can be accessed with $P_TCANG[3] or $P_TCANG[4]. The number of
valid solutions 0 to 2 can be read with $P_TCSOL.
Tool radius compensation with CUT2D or CUT3DFS:
The current tool orientation is included in the tool radius compensation if either CUT2D or
CUT3DFS is active in G-code group 22 (tool compensation type).
For nonrotating toolholders, the behavior depends solely on the active plane of G code group
6 (G17 - G19) and is, therefore, identical to the previous behavior.
All other tool compensation types:
The behavior for all other tool compensation types is unchanged.
For CUT2DF and CUT3DFF in particular, the compensation plane used for TRC is determined
from the active frame, independent of the current tool orientation. Allowance is made for the
active plane (G17 - G19) and the behavior is, therefore, the same as before.
The two remaining G codes of group 22, CUT3DC and CUT3DF, are not affected by the
toolholder functionality because the tool orientation information in these cases is made
available by the active kinematic transformation.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
or α
):
1
2
18.6 Toolholder with orientation capability
W1: Tool offset
1463
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