Error separation technique for double flank gear testing

Abstract

The application of error separation techniques to double flank gear testing is investigated theoretically and experimentally. The mathematic model for error separation is established with the theory of Fourier series. The limitation of two-gear error separation method based on multi-step error separation technique is indicated. It can only separate the total radial composite error, but do nothing with the tooth-to-tooth radial composite error. The accuracy of a three-gear error separation method is also explored. In comparison with the two-gear error separation method, the three-gear method can separate both the total and tooth-to-tooth errors. The theoretical error caused by gear's particular structure is discussed. Experimental results show that the mathematic model is correct and the three-gear error separation method performs better than the two-gear's.