節(jié)距是絲杠溝槽間的距離,通常用于英制產(chǎn)品,單位為每英寸螺紋數(shù)。導(dǎo)程是絲杠每旋轉(zhuǎn)一周螺母直線運(yùn)動(dòng)的距離,通常是滾珠絲杠的指定方式。對(duì)于單頭絲杠,節(jié)距與導(dǎo)程相等。對(duì)于多頭絲杠,導(dǎo)程等于節(jié)距乘以頭數(shù)。
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