Fast integrated multi-parameter detecting system for shaft parts

The principle and method of realizing fast and integrated detection for the geometrical parameters of shaft part are discussed in this paper. Several sensors controlled by a computer are used to detect the measured work-piece in photoelectric scanning non-contact mode in this system. Multi parameters of axial and radial directions could be acquired simultaneously during one scanning process. To achieve fast detection of two dimensions, a scanning signal sensor composed of diode laser and photoelectric component and a grating transducer are adopted in the axial measurement, and a laser displacement transducer based on photoelectric triangulation method is utilized in radial measurement. The normal detecting velocity of the system is 2 seconds per piece; the axial measuring accuracy is less than 0.01mm and the radial one is less than 0.04mm. The structure, the principle and the relations among each part of the system are analyzed and the results of practical measurement are provided in this paper.