Incremental Measurement; General Information - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Turning Machines
6.3 CYCLE982 tool: Measure turning and milling tools
6.3.6

Incremental measurement

6.3.6.1

General information

Function
This cycle and its various measuring variants are for measuring tools incrementally:
_MVAR=100001: Turning tools (machine-related)
_MVAR=100011: Turning tools (workpiece-related)
_MVAR=1xxx01: Milling tools, drills (machine-related)
_MVAR=1xxx11: Milling tools, drills (workpiece-related).
Workpiece-related or machine-related measurement require an appropriately calibrated tool
probe (see Subsection "Incremental calibrating").
With milling tools/drills, the measurement is further specified in the 3rd to 5th digits of
parameter _MVAR.
It is possible to measure single tool lengths, or alternatively for milling tools the cutter radius.
The calculated offsets are entered in the active D number. The offset is entered in the
geometry data and the wear data are reset (irrespective of _CHBIT[3]).
Only the offset value that is in the measuring axis _MA and measuring direction _MD can be
determined in a measurement.
If _CHBIT[20]=1, positioning of the milling spindle at the value of _STA1 can be suppressed
(see Subsection "Milling tool": Suppression of start angle positioning _STA1").
This is possible for milling cutter measuring variants:
_MVAR= xxx001 (where x : 0 or 1, no other values).
Requirements
For incremental measurement, the tool probe must be calibrated in the measuring axis and
direction in which measuring will be performed.
The tool T to be measured must be called with tool offset (D number).
The tool type is entered in the offset data.
For a milling cutter, setting data SD 42950: TOOL_LENGTH_TYPE = 2 must be set (length
calculation as for turning tool).
For milling tools, the tool spindle must be declared the master spindle. For a drill, SD 42950:
TOOL_LENGTH_TYPE = 0 is also possible (refer to Chapter "Measuring drills – special
applications").
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Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles