HEIDENHAIN TNC 640 - Page 684

Turning | Unbalance functions (option 50)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Measure Unbalance cycle
This cycle can only be run in turning mode. Activate
FUNCTION MODE TURN beforehand.
To ensure maximum safety and minimum strain on the machine
and workpiece during turning, you should check the unbalance of
the clamped workpiece and compensate it with a balancing weight.
The controls provides the MEASURE UNBALANCE cycle for this
purpose.
The MEASURE UNBALANCE cycle determines the unbalance of
the workpiece and calculates the mass and position of a balancing
mass.
Determine the unbalance:
Shift the soft-key row in the Manual Operation
mode
Press the MANUAL CYCLES soft key
Press the TURNING soft key
Press the MEASURE UNBALANCE soft key
Enter the speed for unbalance detection
Press NC start
The cycle starts rotating the table at a low speed
and gradually increases the speed up to the
defined value.
The control displays a window that shows
the calculated mass and radial position of the
balancing mass.
If you wish to use a different radial position or mass for the
balancing mass, you can overwrite one value and have the other
value recalculated automatically.
Operating notes:
To compensate an unbalance, several balancing
weights at different positions may be required.
After clamping a balancing weight, the unbalance
must be checked again in a measurement.