我厂开发的新产品SC5T800黄海变速器中有一关键件四五挡锥环,最终需磨7°锥面。原测量方法(检测状态及该产品尺寸要求见图)具有如下缺点:①测量时,霈将零件从加工夹具上卸下,测量不合格再装夹上进行机加工,生产效率低,劳动强度大,②由于多次装夹,定位基准不一定每次都重合,由于定位产生的误差大,甚至会导致产品报废。③操 I developed a new product factory SC5T800 Huanghai Transmission has a key four five-block cone ring, and ultimately need to wear 7 ° cone. The original measurement method (test status and the product size requirements shown in Figure) has the following disadvantages: ① measurement, 霈 parts removed from the processing fixture, unqualified measurement and then re-clamping for machining, low productivity, labor-intensive , ② due to multiple clamping, the positioning of the benchmark may not coincide each time, due to the positioning error, and even lead to product scrapped. ③ operation