Running test machine

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A running testing machine is a special machine for testing bevel gears with two horizontal axes arranged perpendicular to each other .

One of the two axles is driven, i. d. R. the pinion axis . Its angle can be adjusted so that bevel gears with a larger or smaller shaft angle than 90 ° can also be tested. A headstock for the large bevel gear (crown gear) and the small gear (drive bevel gear = pinion ) are mounted on a low-vibration machine bed . The spindles can be adjusted vertically and horizontally.

Using Laufprüfmaschinen manufacturers can of bevel gears in addition to the generation of support frames ( Eintuschieren with z. B. Paris blue ) at predetermined setting parameters to perform a running test in which noise radiation and subjective or objective and Wälzabweichungen a wheel set can be determined. The installation dimension and the circumferential backlash required for later installation in the housing are measured. With modern running test machines, a structure-borne noise analysis and the measurement of the single-flank rolling deviation (rotational error) with extensive documentation and evaluation are also offered.

The contact pattern analysis and the analysis of the measured values ​​allow conclusions to be drawn about errors in the gear cutting process.

Remarks

1. ↑ Contact patterns are created as the sum of the contact lines that, when rolling a wheel set after several revolutions on the tooth flanks of the pulling and pushing flanks to the right and left, are shown by displacing the spotting color that has been thinly applied with a brush.