Test system for the electronics industry

automatic

Compared to internal combustion engines, electric drive units (EDUs) enable extremely quiet driving. This makes manufacturers all the more concerned about the noise generated by gears. With the new requirements for “ultra-quiet transmission” and the rigorous reduction in gear tolerances that this entails, it is clear that traditional testing methods do not provide reliable quality control of the end product and, more importantly here, of the noise generated when two gears mesh. As the world’s leading supplier of end-of-line (EOL) test systems in transmission production, JW Froehlich has developed an innovative production testing system that is capable of identifying defects in individual gears during the manufacturing stage – until recently, such issues could only be detected later, during driving operation (noise development). The customer has requested a test time of less than 35 seconds per test stand, four of which are currently being built for a German OEM. The test part changeover is fully automated – a robot equipped with a double gripper picks up the fully tested gear before immediately inserting a new one into the test stand’s clamping device. This flexible solution facilitates seamless and automatic integration into an existing production line. A complete measuring system from Discom is also built into the unit – the ideal solution for a rotating gear test stand. This is because, whereas conventional methods can only record the noises made by the test parts indirectly, here the measurement takes place directly while the gear rotates.