Optical Lens ,Spherical Lens,Double Concave Lens,Types Of Optical Lenses Ningbo Beilun Kalinu Optoelectronic Technology Co.,Ltd , https://www.kalinueot.com For the processing of the impeller type workpiece, the front and rear end panels of the impeller are required to be symmetrical with the center plane of the flow passage cavity, and the method is correct, and the effect is not good. To this end, we designed the automatic alignment clamping three-jaw chuck. An additional claw body 4 is attached to the chuck claw 3, and the positioning cone 7 is inserted into the impeller flow channel cavity, and then clamped, and the center surface of the flow channel cavity and the surface of the positioning surface are measured.