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異型(xing)砂(sha)光機的(de)定量(liang)(liang)砂(sha)削(xue)(xue)方(fang)式因為所用(yong)(yong)的(de)壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)結構不一樣，所以適用(yong)(yong)的(de)范(fan)圍和它的(de)加(jia)工精度也不一樣的(de)。整體壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)適用(yong)(yong)尺寸誤差小(xiao)工件(jian)的(de)加(jia)工，分(fen)段壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)適用(yong)(yong)尺寸誤差大工件(jian)的(de)加(jia)工。無論是整體壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)還是分(fen)段壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)或氣囊式壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)，工作原理都是由壓(ya)(ya)墊(dian)(dian)(dian)(dian)(dian)對(dui)砂(sha)帶(dai)施加(jia)一定的(de)壓(ya)(ya)力，在此壓(ya)(ya)力的(de)控制下，砂(sha)帶(dai)在預定的(de)范(fan)圍內對(dui)工件(jian)進行磨(mo)削(xue)(xue)加(jia)工。在整個磨(mo)削(xue)(xue)過程中，磨(mo)削(xue)(xue)用(yong)(yong)量(liang)(liang)相等(deng)，達到磨(mo)削(xue)(xue)量(liang)(liang)磨(mo)削(xue)(xue)。