鑄鐵平板雙軸旋轉法正創小編介紹
雙軸旋轉法是以兩大點連線及兩小點連線為兩根旋轉軸，同時對被測表面各測點的原始數據進行旋轉變換，使大點和點的分布形式符合小條件判別準則之一，進而求得平面度誤差值的一種方法。
由于(yu)該法有(you)同時(shi)確定(ding)(ding)(ding)(ding)兩(liang)根(gen)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)軸(zhou)(zhou)(zhou)(zhou)位置和旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)量(liang)(liang)數值(zhi)(zhi)，使(shi)數據變換 簡捷的(de) 點(dian)，所以平(ping)板(ban)(ban)檢(jian)定(ding)(ding)(ding)(ding)規程規定(ding)(ding)(ding)(ding)采用此(ci)法。該法求解(jie)的(de)結果，取(qu)決(jue)于(yu)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)軸(zhou)(zhou)(zhou)(zhou)和旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)量(liang)(liang)的(de)確定(ding)(ding)(ding)(ding)，而旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)軸(zhou)(zhou)(zhou)(zhou)與(yu)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)量(liang)(liang)的(de)確定(ding)(ding)(ding)(ding)與(yu)大(da)點(dian)、小點(dian)選定(ding)(ding)(ding)(ding)的(de)正確性有(you)關(guan)。通常(chang)把大(da)點(dian)與(yu)小點(dian)稱為值(zhi)(zhi)點(dian)。因此(ci)如何快速準確地判斷(duan)出四(si)上值(zhi)(zhi)點(dian)，成為雙軸(zhou)(zhou)(zhou)(zhou)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)法的(de)關(guan)鍵所在。按(an)照(zhao)本(ben)書提供(gong)的(de)判定(ding)(ding)(ding)(ding)表面形狀(zhuang)、選定(ding)(ding)(ding)(ding)值(zhi)(zhi)點(dian)、確定(ding)(ding)(ding)(ding)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)軸(zhou)(zhou)(zhou)(zhou)、以此(ci)例(li)插入(ru)法求取(qu)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)量(liang)(liang)的(de)方法步驟，可(ke)使(shi)平(ping)板(ban)(ban)檢(jian)定(ding)(ding)(ding)(ding)規程規定(ding)(ding)(ding)(ding)的(de)雙軸(zhou)(zhou)(zhou)(zhou)旋(xuan)(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)法做到有(you)章可(ke)循， 為實(shi)用， 具可(ke)操(cao)作(zuo)性。