On-machine measurement device and method for fractal characteristics of gear surface and thickness of oil film at meshing position in planetary gear train

• Main Authors: GUAN YIBO, WU SHI, ZHAO CHENGRUI
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention provides an on-machine measurement device and method for gear surface fractal characteristics and meshing position oil film thickness in a planetary gear train, and belongs to the field of gear surface detection. The problem that the service life and the stability are affected due to the fact that on-machine measurement of the oil film thickness is not easy to achieve when a sun gear and a planet gear in a planetary gear train are in lubricating contact is solved. The measuring device comprises a mechanical arm, a magnetic suspension guide rail, a mechanical arm base, an optical fiber emitter, an optical fiber displacement sensor, a visible light laser and a visible light laser collector. According to different working requirements, the multifunctional measuring head of the mechanical arm can achieve measurement conversion, data deviation caused by frequent replacement of measuring instruments is avoided, the magnetic suspension track is adopted to reduce friction resistance and vibration in the