process allowance

The machining process is performed by using the electroplated spheric shape diamond grinding wheel according to the obtained discrete data of the inner surface and the required grinding allowance at any point after complicated data processing and under computer control.

依据测量得到的天线罩内廓型离散数据和曲面上要求的各点去除量，经复杂数据处理后在计算机控制下，由电镀球形金刚石砂轮进行天线罩内廓型的精密磨削；

experiment on reduction of process allowance for tapered rollers

圆锥滚子加工余量的压缩试验

But there are also some parts with backwardly manufacturing process whose allowance are small and uneven distribution.

但是仍有一些零件的制造工艺还比较落后。这些零件毛坯由铸造或锻造生成，余量较小且不均匀。

By means of increasing the machining allowance of the valve body outer ring and 900 ring welding, the product quality and the production circle can be guaranteed for optimizing the process plan.

通过采取增加阀体外圆加工余量、90°弧环拼焊等措施，保证了产品质量和生产周期，并力争工艺方案的最优化。