Gear train backlash measuring device and measuring method thereof

Abstract

The invention provides a gear train backlash measuring device which comprises a control system, a driving mechanism, a torque measuring mechanism, an angle measuring mechanism and a test system. The torque measuring mechanism monitors time-dependent torque of a driven gear train and sends corresponding first signals to the test system. The angle measuring mechanism monitors a time-dependent angle of the driven gear train and sends corresponding second signals to the test system. The test system comprises a storage module and a calculating module, wherein the storage module is used for storing structural parameters of the gear train, and the calculating module calculates backlashes at all stages of the gear train according to the first signals, the second signals and the structural parameters of the gear train. The gear train backlash measuring device has the advantages that through monitoring of the corresponding relationship of torque jumping and the angle of the gear train, the angles of the gear train when various meshing pairs are added to transmission are obtained, and therefore the backlashes at all the stages can be accurately and simply calculated out at a time.

Description

technical field [0001] The invention relates to the field of gear design and manufacture, in particular to a gear train backlash measuring device and a gear train backlash measurement method using the gear train backlash measuring device. Background technique [0002] In order to prevent the temperature rise of the gear train during operation and cause the gear to become larger and cause seizure, the gear train has backlash. The backlash of a gear train refers to the amount of circumferential play of the assembled gear pair when one gear is fixed. At present, there are generally three methods for measuring the gear backlash of the gear train: one is direct feeler gauge measurement, which detects the minimum clearance of the tooth surface when the assembled gear pairs are in meshing position through the feeler gauge, and obtains the side clearance of the gear pair. The second is to measure the lead wire by rolling. Place a lead wire with a suitable diameter on a gear tooth o...

AI Technical Summary

Problems solved by technology

Although the above measurement method is simple, the measured object is greatly limited. Only one pair of gear pairs can be detected at a time, and the gear pair with large structural restrictions cannot be detected.

With the development of electronic technology, new detection methods are also emerging, which facilitates the detection of certain parameters, but it is still impossible to complete the measurement of the backlash of each meshing pair of the gear train at one time, such as the invention patent "Measurement of Gear Pair Transmission Accuracy Method" (200810098882.4), the transmission accuracy of the gear pair can be obtained by using the angle sensor to detect the angle of the input and output shafts of the gear pair. At the same time, if the method is used to measure a pair of gear pairs, the The backlash is the backlash. However, for the gear train, since there are multiple sets of meshing pairs, this method cannot obtain the backlash of each meshing pair.

[0003] Since the existing technology cannot completely detect the backlash of the meshing pairs at all levels of the gear train, a more advanced method is needed to accurately measure all the backlashes of the meshing pairs at all levels of the gear train

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