A technology for machining the isolating plate of compressor features that the circular workpiece to be machined has a central convex disc part and an axle part perpendicular to the disc part, and is rotating at high speed, and the cutting tool with acute angle installed to a high-speed lathe is perpendicular to the said axle part and is reciprocated axially to form the sine shape at both surfaces of the said disc part. It along with the blade can be inserted in the cylinder assembly so forming the sine wave curved surface of isolating plate to make a least gap between the sucking area and the compression area. Its advantages are no gas leakage, high compression performance and high productivity. |