在加工端面、圆弧、圆锥以及蹊径直径相差较大的零件时，沿X轴方向进给时，固然进给速度不变，但切削线速度却不断地变化，导致加工表面质量变化。
In the end, arc, processing and ground is large diameter conical parts, along the X axis into to, is the same, but the linear cutting speed is constantly changing, the cutting surface quality changes.
为了保证加工表面质量，数控车床一般都具有恒表面切削速度控制功能。
In order to guarantee the machining surface quality, numerical control lathe generally has constant surface cutting speed control function.
在切削加工中，为了提高已加工工件的表面质量，需要研究切削速度和进给量对已加工工件残余应力的影响规律。
The effects of cutting speed and feed on residual stress of workpiece machined should be studied to improve surface quality in machining.
通过切削试验，分析了切削速度、背吃刀量以及切削液等参数改变时，对切削力及表面质量的影响。
Through cutting experiment, the influence on cutting force and surface quality was analyzed when change the parameters such as cutting speed, back cutting depth and cutting fluid and so on.
适当提高锯丝的张紧力，在一定的变化范围内，采用高的锯丝速度和低的进给速度，可以获得好的切片表面质量。
Increasing the wire tension force properly, adopting the higher wire velocity and slower infeed velocity in a range, the high wafer surface quality can be obtained.
挤压速度、挤压毛坯的温度、型腔温度、模具的表面粗糙度以及挤压毛坯的化学成分是影响热挤压件表面质量的主要因素。
Extruding velocity, temperature of billet and container, die roughness and the chemical composition of the billet are the major factors which affect the surface quality of the extruded product.
挤压速度、挤压毛坯的温度、型腔温度、模具的表面粗糙度以及挤压毛坯的化学成分是影响热挤压件表面质量的主要因素。
Extruding velocity, temperature of billet and container, die roughness and the chemical composition of the billet are the major factors which affect the surface quality of the extruded product.
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