平锻机和钢球滚子冷锻机等机床的曲轴重量大，几何形状复杂，精度要求高。加工这样的大型复杂零件，必须要有大型的车床和磨床，我厂仅有大型车床，无法进行磨削，因而采用在车床上进行粗、精车后，再进行表面滚压加工。这样不但保证了曲轴的精度和粗糙度要求，同时由于滚压后 Flat forging machine and steel ball roller forging machine crankshaft, such as weight, complex geometry, high precision. The processing of such large complex parts, you must have a large lathe and grinder, I plant only a large lathe, can not be grinding, which used in the lathe rough, fine car, and then the surface rolling. This not only ensures the crankshaft accuracy and roughness requirements, at the same time as the rolling