Based on the analyses of advantages and disadvantages of the current NC machining of sculptured surfaces using the flat end cutter, a new method is proposed for the automatic generation of the flat end cutter path without overcut interference during machining.

The radius of this new hob has a great effect on the cutting interference,and this parameter must be rationally designed in order to avoid interference.

The inspection technology of the displacement of shear on the lateral shearing interferometer based on Radon transform;

The common lateral shearing interferometer composed of a parallel plate was improved in structure,and frequency synthesis theory in(Fourier) optics was applied to the inspection of collimated light beam by means of lateral shearing interferometer.

The mathematical principle of quantitative process and the technique in sampling process about lateral shearing interference.;

Design of long guide alignment measurement system based on laser shearing interference

The choice of proper initial angle of incidence makes a lateral shearing interference easy to realize between the two beams reflected from the front and back surfaces of a plane-parallel plate.

Considering the defect of conventional shear interference, it is tested by means of the mathematics and numerical simulation that the shear interference with prolongation wavefront can overcome those drawbacks.