Siemens Sinumerik 840D Operating Turning page 84

Section 5
Notes
B505
B505
Tool changing point
The indexing of the tool turret must always take place at a collision-proof
point within the work space of the turning machine.
For this the tool carrier is generally retracted well back into the positive
range of the work space (Please take into account the real traverse ranges
of your machine; the values used in the example are only exemplary!).
Programming example 1:
N10 G18 G54 ...
N20 G00 X300 Z150
N30 T1; Roughing tool
...
On this basis the tool carrier will traverse to various positions depending on
the active tool length (in X and Z) and the position of the work piece zero
point (It is always the tool tip that is being positioned).
Attention:
In case the next tool is going to be for instance a long boring bar, the tool
carrier must be repositioned along the longitudinal axis further away from
the work piece.
Otherwise there might be a danger of collision during the tool
change!
On the next page a suggestion for the programming of an independent tool
changing point will be found.
Page 6
Explanation:
Approach of the tool changing point,
Indexing the turret to position T1
W
Pos. Z
840D/828D SINUMERIK Operate