一、确定汽缸的镗削量及次数 确定汽缸修理尺寸后,选择同级修理尺寸的活塞,并依次测定每个活塞裙部的尺寸,结合配合间隙和珩磨余量确定各缸镗削量。镗削量等于活塞裙部最大直径减去汽缸最小直径加上配合间隙再减去珩磨余量。珩磨余量一般取0.03～0.05mm,配合间隙由各机型技术标准确定。 镗削量确定以后,再根据镗缸机的允许吃刀量和工艺要求确定每次吃刀量和镗削次数。 First, to determine the amount of cylinder boring and the number of times to determine the cylinder repair size, select the same level repair piston size, and then determine the size of each piston skirt, combined with the clearance and honing margin to determine the amount of each cylinder boring. The amount of boring is equal to the maximum diameter of the piston skirt minus the minimum cylinder diameter plus the mating gap minus the honing margin. Honing the remainder generally take 0.03 ~ 0.05mm, with the gap by the technical specifications of each model. After determining the amount of boring, and then according to the allowable amount of boring cylinder machine and process requirements to determine the amount of each eat and boring times.