Mahr MWF solution in action.
Mahr unveils its double-flank gear roll testing measurement machine. The system works by testing the form feature concentricity deviation Fr on the internal toothing located on the gears. With these measurement results, the amount of noise developed in the gearbox can be predicted.
By measuring how well gears mesh together, manufacturers can limit the noise they produce when installed in gearboxes. This machine ensures that two gears rotate away from each other in the measuring machine and then tests the tooth flanks.
How does the Mahr solution work:
Mahr MWF's measuring station for double-flank roller test determines the form feature runout Fr on the internal teeth of gears.
- The machine consists of a rotating measuring table with a clamping device and a tactile measuring system.
- First, the gear wheel is measured before it is clamped onto the measuring table and then rotated on its axis.
- Then a second gear, the master gear, is used. This gear is adjusted on a special slide and is pressed into the test piece.
- Finally, the user rotates the component holder 360 degrees to complete the dynamic measurement.
- All relative movements are then recorded and converted by the MarWin software.
- Fourier analysis can then occur to determine fundamental oscillation and evaluation of the entire measurement – providing a meaningful measurement result.
"Our double flank rolling test is a particularly realistic measurement that simulates the behaviour of the gears in subsequent operation," said David Hagel, Head of Design & Mechanical Engineering at Mahr MWF. “The customer can measure very quickly: The result is available after only around 45 seconds. The measuring process records every single tooth of the component in order to determine the run-out deviation Fr.”
He concludes, “And finally, the MWF measuring solution can be used universally and is very flexible, as various set-up sets ensure that different gears can be measured.”