Datum setting without a 3-D touch probe 14.6
14
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
511
14.6
Datum setting without a 3-D touch
probe
Note
When you set a datum, you set the TNC display to the coordinates
of a known workpiece position.
All manual probe functions are available with a 3-D
touch probe.
touch probe (option number 17)", page 533
Preparation
Clamp and align the workpiece
Insert the zero tool with known radius into the spindle
Ensure that the TNC is showing the actual positions
Datum setting with an end mill
Protective measure
If the workpiece surface must not be scratched, you
can lay a metal shim of known thickness d on it. You
then enter a value that is greater than the desired
preset by the value d.
Operating mode: Press the
Manual operation
key
Move the tool slowly until it touches (scratches)
the workpiece surface
Select the axis
DATUM SETTING Z=
Zero tool in spindle axis: Set the display to a
known workpiece position (here, 0) or enter the
thickness d of the shim. In the tool axis, offset the
tool radius
Repeat the process for the remaining axes.
If the values for the tool in the tool axis have already been set, set
the display of the tool axis to the length L of the tool or enter the
sum Z=L+d
The TNC automatically saves the datum set with the
axis keys in line 0 of the preset table.
Summary of Contents for TNC 620 Programming Station
Page 4: ......
Page 5: ...Fundamentals ...
Page 28: ...Contents 28 HEIDENHAIN TNC 620 ISO Programming User s Manual 9 2016 ...
Page 57: ...1 First Steps with the TNC 620 ...
Page 77: ...2 Introduction ...
Page 110: ......
Page 111: ...3 Fundamentals file management ...
Page 166: ......
Page 167: ...4 Programming aids ...
Page 194: ......
Page 195: ...5 Tools ...
Page 234: ......
Page 235: ...6 Programming contours ...
Page 284: ......
Page 285: ...7 Data transfer from CAD files ...
Page 304: ......
Page 305: ...8 Subprograms and program section repeats ...
Page 323: ...9 Programming Q parameters ...
Page 384: ......
Page 385: ...10 Miscellaneous functions ...
Page 407: ...11 Special functions ...
Page 433: ...12 Multiple axis machining ...
Page 475: ...13 Pallet management ...
Page 480: ......
Page 481: ...14 Manual Operation and Setup ...
Page 549: ...15 Positioning with Manual Data Input ...
Page 554: ......
Page 555: ...16 Test Run and Program Run ...
Page 590: ......
Page 591: ...17 MOD Functions ...
Page 622: ......
Page 623: ...18 Tables and Overviews ...