少无切屑加工是一种新工艺,我厂自1972年推广采用熔模精密铸造件以来,已有55种144件,其中最大精铸件履带板外形尺寸为560×360×160,净重33公斤。1976年又开始进行大模数伞齿轮少切屑加工工艺试验。齿轮模数 Less no chip processing is a new technology, I plant since the introduction of investment casting precision casting since 1972, there are 55 kinds of 144, of which the largest castings track shoe dimensions 560 × 360 × 160, net weight 33 kg. In 1976 began to carry out large-modulus bevel gear less chip processing technology test. Gear modulus