Research Of The Laser-Scanned Measuring For The Diameter

With the rapid development of mechanics electronics and optics industries,the precision requirement of workpiece's parameters are increased.The traditional inspecte instruments can't achieve some new requirement. Laser-scaned Measuring for the Diameter can measure circular objects on production line in high speed, high precision ,and this measurement is untouched, because of untouching,there is no interference with the objects being measurered. So it is fit for the moving or vibrating objects that may be hot or soft.Laser-scanned Measuring for the Diameter system involved optics, laser, electronics , computer and mechanics etc, In the system,a visible laser is taken as its light source, the geometric parameter of the measured object is transformed into the electrical sighals by a scanning optical system and an opto-electronic transformation system,the measured result is given and displayed by the computer real time data processing. In the paper we expound the total structure design of the diameter measurement, The working rinciple and overall structure ofthe diameter measurement are introduced,the choose of optics principle, the special optical system which consist f lens, the design of fine mechanics system, and the choose of light to current inversion as well as computer control and data processing system. At last, the accurate of laser beam on line measuring instrument has been analyzed.