Abstract： In order to process the involute curve profile of scroll compressor,the method of using Archimedes spiral in radial equal interval to approximate the involute curve in the polar coordinates was used,and the theoretical approximation error of this method was analyzed.The simulation of approximation error caused by different interpolation interval was conducted by Matlab and the calculation method of selecting the best interpolation interval was also given.The processing experiment of orbit scroll using the approbation method of radial equal interval was carried out on CNC machine tool,and the Interpolation error of actual processing was 1.5 μm.Error caused by the actual processing was compared with the simulation results.The effectiveness and practicality of the method were tested and verified.
2012, Vol. 34 
