ng to the mechanism group M to M depending on th B2SV-9-C Bevel-helical speed reduction gearboxes B2

Flender/Flender Gear Units/Bevel-helical speed reduction gearboxes B2

linear approach employed in mirroring the deviations. 7.2 Testing Bevel Gear Sets 7.2.1 Fundamentals Industrial requirements for test method which can be used to assess the manufactured quality of bevel gear sets include: reproducibility of the results, short test times, good emulation of the installed situation, simple good/bad assessment Running tests on bevel gear sets are cumulative test processes in which large number of manufacturing-dependent deviations are captured simultaneously. Pin- ions and wheels can be tested in pairs or compared to appropriate master gears. Inmost cases, bevel gears are pair-tested and the grading applies to the gear set. Many running test methods have been developed in the past. They may be categorized as subjective and objective running test methods [ EDER0 ]. Subjective methods include noise tests made by tester and visual contact pattern testing.Objective methods are single-ank and double-ank tests or the structure-bornenoise test. Assessment criteria are the form and position of the contact pattern, the perceived gear noise and standardized or non-standardized parameters of the various objective running test methods. On this basis, it is possible not only to judge runningbehavior in certain installed position but also to determine the optimum position inwhich to install the gear set. To this end, the pinion mounting distance is gradually7.2 Testing Bevel Gear Sets 3 changed during the test, and an assessment is made for each position. When compared to ank form measurement, the running test has the advantage of short measuringtimes and conclusiveness on the running behavior of the gear set, coupled to simple, low-cost test set-up. 7.2.2 Contact Pattern Test The contact pattern on gear tooth is the area of tooth ank which participates in the transfer of force and motion. contact pattern test on bevel gears usually character-izes the nal state of gear set, and is an integrating variable. Even today, the contactpattern