Oerlikon Geartec Ag

Klingelnberg Ag

Christian Pahud

Volker Bartelt

Hartmuth Müller

Arno Rutschke

Alexander Landvogt

A device () for measuring the running behavior of a gear pair having a rolling device () which comprises one spindle () per gear () and has at least one drive () for driving one of the gears (). Furthermore, a structure-borne noise sensor (), a sequence controller (), and a speed sensor system () are provided. The sequence controller () is designed in such way that a combined test of the gear pair may be performed, in which, in a first search run, a specific installation position is ascertained using structure-borne noise testing and subsequently a single-flank working test is performed at the specific installation position.

Device and method for combined testing of gears

A system for determining the suitable positioning of a first gear wheel in relation to a second gear wheel. The system comprises an evaluation unit and a roll-of device, which contains a first spindle for the rotatable seating of the first gear wheel, a second spindle for the rotatable seating of the second gear wheel and a drive mechanism for rotating the first gear wheel and a drive mechanism for acting with a positive or a negative torque on the second gear wheel. The roll-off device furthermore has a displacement device for changing the positioning of the first gear wheel in relation to the second gear wheel. A measurement pick-up device and two angle encoders are provided in the roll-off device and are connected with the evaluation unit. The evaluation unit processes coordinate information S(X, Y, Z), which describes the positioning of the first gear wheel in relation to the second gear wheel, the continuous signal from the measurement pick-up device, and signals from the two angle encoders, in order to determine the suitable positioning.

Continuous measurement for determining a suitable mounting position or for quality-testing of gear sets

A method and an apparatus are described for optoelectronically determining the contact patterns on tooth flanks of gears. The tooth flanks of at least one gear (24) of a pair of gears (22, 24) to be tested are marked by application of a marking compound. Contact patterns (28) are formed on the points of contact of the tooth flanks during operation. These contact patterns are picked-up and stored as a first digital image. The first digital image serves to determine a second digital image containing the outline of the tooth flank. A third digital image which contains the contact pattern (28) is determined from the first digital image. The second and the third digital images are superimposed on each other to determine a fourth digital image of the tooth flank, which contains the outline thereof and has its contact pattern inscribed therein, and which can be analyzed to determine the position and size of the contact pattern with reference to the outline. It is advantageous that the contact pattern can be determined and analyzed without a desired representation of the contact pattern or any reference image at all having to be available beforehand. It is a universal method in which the actual outline of the tooth flanks of the marked gear of the pair of gears to be tested is used for the analysis.

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Zurich, Switzerland

Christian Pahud