Error Analysis And Efficiency Advance For Three Coordinate Measuring System

Comparing with traditional contact measuring method, non-contact measuring method has the characteristics of zero-contact, higher resolution and great range of measurement. Non-contact measuring method has no measuring stresses and frictions on the surface of vane, so it can measure soft and susceptively distorted object surface. The measuring speed and sampling frequencies of the method are high and it can collect the points on the object surface densely to form data cloud. After improving its structure, put the latter as the object of this article.The main work in the dissertation is arranged as follows:1. Basing on this machine, two modes are given and analyzed in this article, data cloud and remodeling based on curve. And dealing with the data cloud has been dissertated detailedly.2. Introduce the development of the hardware of the three-dimensional laser scanning machine including motion controller and the laser gauge head.3. The paper analyzes the system error of non-contract CMM.Its system error mainly roots in the geometric error of the CMM system.It includes transmission error of X and Z axis boll screw, the angular error X and Z.The author uses software compensaton method to compensate the CMM system error. The author sets up mathematics moduls for eath error and writes error compensation program. According to the measuring software, the author uses Visual C++6.0 to write error compensation program. After test, the error compensation program woks well.4. With the detective and direction of detective,verify measure point and location.Check the problem of measure routine,touch,avoiding.At last advance the efficiency.