Siemens SINUMERIK 840D sl Programming Manual page 274

Measuring variants
3.5 Measure tool (turning)
Requirements
● The tool probe must be calibrated.
● The approximate tool dimensions must be entered in the tool offset data:
– Tool type: 2xy (drill)
– Length 1, length 2
● The tool to be measured must be active with its tool offset values when the cycle is called.
● The channel-specific SD 42950: $SC_TOOL_LENGTH_TYPE should be assigned 2 as
standard (length assignment the same as for turning tools). For special applications, a value
0 can be used (Page 272).
Starting position before the measurement
From the starting position, collision-free approach to the probe must be possible.
The initial positions are located outside the unauthorized area (see the diagram below).
①
Figure 3-29
Position after the end of the measuring cycle
The tool tip is positioned at the measurement path from the measuring surface.
Measure drill - special applications
The tool probe has been calibrated with G18 active as is usual for turning tools.
Function
If drills are used on lathes with a length compensation as for milling machines (SD 42950:
$SC_TOOL_LENGTH_TYPE=0), then a drill can also be measured (gauged) in this application.
Length L1 is always calculated in the 3rd axis (tool offset axis) of the actual plane G17 to G19.
This also characterizes the position of the tool.
G17: L1 in Z axis (corresponds to axial position)
274
④
to permissible area
Measure drill: Possible starting positions in the 2nd axis of the plane (for G18: X)
Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
Measuring cycles