HEIDENHAIN TNC 370 User Manual page 294

9 3D Touch
Probes
e
9.6 Measuring Tools with the lT 120 Touch Probe
Measuring the tool radius
Befofore measuring a tool far the first time, pu must srkter the following data on the tool into toaf table TO0L.f {see
page 4-11 f: the approximets radius, rhe approximate lengrh, tine number of cu?$ng edges, and the cutting direction.
The tool radius is measured with the cycle TCH PROBE 32 TOOL
RADIUS. Depending on the selected input parameters you can determine
the radius of a tool by:
l
Measuring the tool while it is rotating
l
Measuring the tool while it is rotating and subsequently measuring the
individual cutting edges.
Measuring cycle
The TNC pre-positions the tool to be measured to a position at the side of
the touch probe head. The distance from the tool tip to the upper edge of
the touch probe head is defined in MP 6530. You can enter an additional
offset under TOOL OFFSET: LENGTH (TT: L-OFFS) in the tool table, for
example, for measuring the radius of a spherical cutter. The tool is then
probed radially during rotation.
If you have programmed a subsequent measurement of individual cutting
edges, the TNC measures the radius of each cutting edge with the aid of
oriented spindle stops.
Input data
. MEASURE TOOL=0 / CHECK TOOL=1
Select whether a tool is to be measured for the first time or whether a
tool that has already been measured is to be inspected. If the tool is
being measured for the first time, the tool radius R in the central tool
file TO0L.T is overwritten by the delta value DR = 0. If you wish to
inspect a tool, the TNC compares the measured radius with the tool
radius R that is stored in TO0L.T. It then calculates the positive or
negative deviation from the stored value and enters it into TO0L.T as
the delta value DR. The deviation can also be used for Q parameter
Q116 (see page 12-13). If the delta value is greater than the permissi-
ble tolerance for wear or breakage in the tool radius, the TNC will lock
the tool (status L in TO0L.T).
l
CLEARANCE HEIGHT
Position in the tool axis in which there is no danger of collision with the
workpiece or fixtures.
l
CUTTER MEASUREMENT O=NO / l=YES
Here you can choose measurement of single cutting edges.
NC program blocks for measuring a rotating tool for the first time:
TOOL CALL 12 Z
TCH PROBE 32.0 TOOL RADIUS
TCH PROBE 32.1 CHECK: 0
TCH PROBE 32.2 HEIGHT: +I20
TCH PROBE 32.3
CUTTER MEASUREMENT: 0
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4
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NC program blocks for inspecting single cutting edges:
TOOL CALL 12 Z
TCH PROBE 32.0 TOOL RADIUS
TCH PROBE 32.1 CHECK: 1
TCH PROBE 32.2 HEIGHT: +I20
TCH PROBE 32.3
CUTTER MEASUREMENT: 1
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