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目前,精密加工技术已进入了0.1～0.01μm的超精密加工阶段。要达到这样高的加工精度,除刀具和工件的相对运动轨迹要严格满足构形运动的要求外(主轴的回转精度,导轨的平直度、平行度,整工艺系统的热、动、静刚性均应达到一定的要求),机床具有高精度的微量进刀机构也是一个重要的条件。一、传统进刀机构存在的问题精密车床进刀机构中的零件按其作用,可以分为长度基准、位移交换、载刀移动三类元件。由于各元
At present, precision machining technology has entered the 0.1 ~ 0.01μm ultra-precision machining stage. To achieve such a high machining accuracy, except for the relative movement of the tool and the workpiece to strictly meet the requirements of the configuration movement (spindle rotation accuracy, rail straightness, parallelism, the whole system of heat, motion, static rigidity Should meet certain requirements), the machine has a high precision micro-feed mechanism is also an important condition. First, the traditional problems of the feed mechanism Precision lathe into the body parts in accordance with its role, can be divided into the length of the benchmark, displacement exchange, knife movement of three components. Due to the various elements