我厂生产各种规格卷扬机和卷筒配件,其中有许多卷筒直径都超过1000毫米,因此绳槽的圆弧及节距亦相应增大。在没有专用机床的条件下,如果在普通车床上利用成型车刀加工而采取大切削用量时,则切削力大,加以工件自重达2000公斤以上,车床负荷不够,无法加工,而且切削刃过长,亦将产生振动而影响表面质量;如果将进刀量减至最小,分多次吃刀,则生 I plant a variety of winches and reel accessories, of which many have a diameter of more than 1000 mm drum, so rope groove and the pitch arc also increased accordingly. In the absence of special machine tools, if the use of ordinary turning lathe molding machine to take a large amount of cutting, the cutting force, to the workpiece weight of 2,000 kg or more, the lathe load is not enough, can not be processed, and the cutting edge is too long , Will also produce vibration and affect the surface quality; if the amount of feed to a minimum, points to eat more than one knife, the students