| 摘要 |
A gear testing machine tests toothing characteristics such as tooth profile, tooth pitch or tooth helix angle and records deviations between desired and actual values on a test piece (10) which may be a gear, a worm etc. A radial carriage (16) is mounted on radial guideways (14) and is displaceable by means of a radial drive comprising a servomotor (16a), a tachogenerator (16b) and a position transducer (16d). In addition, a tangential carriage (26) and an axial carriage (30) are controllably displaceable by respective drives analogous to the radial carriage drive. The various drives are further connected to position regulators. The desired/actual deviations can be determined from a signal of a sensor (34) and correction values of the corresponding position regulators. At least one of the drives has a second closed loop control circuit comprising the servomotor (22a, 26a, 30a) of the respective drive and its associated position transducer (22d, 26d, 30d) and actual position values determined by another of said drives are inputted to said second circuit as a regulating variable therefore. |
