在溜板結構(gou)中，橫向進給絲(si)(si)杠(gang)（即中滑板絲(si)(si)杠(gang)）磨(mo)損(sun)較(jiao)嚴(yan)重(zhong)。以致引(yin)起車床在承受進給切削力時(shi)，出現刀架竄動、定位不準、操縱(zong)手(shou)柄的空(kong)行程大等缺陷，影響工(gong)(gong)件的加工(gong)(gong)精度和表(biao)面(mian)粗糙(cao)度。大修時(shi)應更換(huan)新的絲(si)(si)杠(gang)和螺母(mu)。

在沒(mei)有新(xin)絲(si)(si)(si)(si)杠(gang)(gang)備件時，也(ye)可對(dui)原(yuan)絲(si)(si)(si)(si)杠(gang)(gang)進(jin)行修復。修理原(yuan)則(ze)是(shi)修車(che)削絲(si)(si)(si)(si)杠(gang)(gang)的螺紋(wen)部分，配螺母，修軸頸(jing)，換(鑲(xiang))銅套(tao)。修理前，先(xian)檢查絲(si)(si)(si)(si)杠(gang)(gang)的螺距(ju)誤差和螺距(ju)累積誤差，確定修整余量，以(yi)免車(che)到絲(si)(si)(si)(si)杠(gang)(gang)尾部時出現螺紋(wen)亂牙現象。絲(si)(si)(si)(si)杠(gang)(gang)軸頸(jing)磨損后，經修磨在法蘭盤中(zhong)鑲(xiang)一銅套(tao)與它配合。

裝配絲(si)(si)杠、螺母時，墊片的(de)(de)厚(hou)度應以接近絲(si)(si)杠根部的(de)(de)尺寸為(wei)準，以免絲(si)(si)杠回轉時手柄有輕重不一致的(de)(de)現象。

濟寧利興精(jing)密機(ji)械(xie)制造有限公(gong)司(si)遵(zun)循技術的(de)理念和生產工藝，引進研(yan)發的(de)數控螺(luo)桿(gan)旋(xuan)切機(ji)，配置德(de)國切削旋(xuan)風(feng)頭，意(yi)大(da)利ORT滾牙機(ji)及(ji)(ji)相(xiang)關的(de)加(jia)工設備(bei)及(ji)(ji)精(jing)密檢測儀器(qi)(qi)，提供了國內梯形(xing)絲桿(gan)業界完(wan)整的(de)產品系列服務，公(gong)司(si)的(de)產品涉及(ji)(ji)面廣(guang)泛(fan)，可(ke)為(wei)顧客提供￠7mm-￠400mm，直(zhi)徑400，長度(du)6米，直(zhi)徑280，長度(du)12米，螺(luo)距(ju)0.5-24mm的(de)絲桿(gan)，光潔(jie)度(du)可(ke)達到(dao)Ra0.4-0.8，可(ke)生產6級-10級的(de)絲桿(gan)，可(ke)廣(guang)泛(fan)用(yong)于炮塔式銑(xian)床，龍門(men)銑(xian)床，車床，火(huo)花機(ji)，磨(mo)床，木工機(ji)械(xie)，印刷機(ji)械(xie)，包(bao)裝機(ji)械(xie)，健身器(qi)(qi)材，器(qi)(qi)械(xie)，屏蔽門(men)，電動推桿(gan)絲桿(gan)，開窗(chuang)機(ji)，升降機(ji)械(xie)等領域(yu)。

我(wo)們相信，我(wo)們將(jiang)是您(nin)–需(xu)要(yao)高(gao)質量(liang)大型絲(si)杠，梯形絲(si)桿，多(duo)頭絲(si)桿的供應商。

絲杠加工(gong)(gong)中(zhong)，中(zhong)心(xin)孔是定位(wei)(wei)基(ji)準(zhun)，但由于(yu)絲杠是柔性件，河北龍門銑床T型絲桿(gan)，剛(gang)性很(hen)差(cha)(cha)，極易(yi)產生變形，出現直線度(du)、圓柱度(du)等(deng)加工(gong)(gong)誤差(cha)(cha)，不易(yi)達到圖樣上的形位(wei)(wei)精度(du)和表(biao)面(mian)質量等(deng)技(ji)術(shu)要求，加工(gong)(gong)時還須增加輔助支(zhi)承。將外(wai)圓表(biao)面(mian)與(yu)跟刀架相接觸，防止因切削力造成的工(gong)(gong)件彎曲變形。同時，為了(le)確保定位(wei)(wei)基(ji)準(zhun)的精度(du)，在工(gong)(gong)藝過程(cheng)中(zhong)先后安排(pai)了(le)三次研(yan)磨中(zhong)心(xin)孔工(gong)(gong)序(xu)。

由于絲(si)杠螺紋(wen)(wen)是關鍵部位(wei)，為(wei)防止因淬火應力(li)集(ji)中所(suo)引起的裂紋(wen)(wen)和避免螺紋(wen)(wen)在全(quan)長上的變形而使磨削余量不均等弊病，龍(long)門銑床(chuang)T型絲(si)桿(gan)加(jia)工(gong)，螺紋(wen)(wen)加(jia)工(gong)加(jia)工(gong)采(cai)用(yong)“全(quan)磨”加(jia)工(gong)方法，

即在熱處理后直接采用(yong)磨削螺(luo)紋(wen)工(gong)藝，以確保螺(luo)紋(wen)加工(gong)精度。

由于該絲(si)(si)杠(gang)為(wei)單件(jian)生(sheng)產(chan)，要(yao)求較高(gao)，故加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)嚴格按照工(gong)(gong)(gong)(gong)序(xu)劃分階(jie)(jie)段(duan)(duan)(duan)的(de)(de)原則，龍門(men)銑(xian)床(chuang)T型絲(si)(si)桿(gan)參數，將整個工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)分為(wei)五(wu)個階(jie)(jie)段(duan)(duan)(duan)：準備(bei)和(he)預(yu)先熱處(chu)理階(jie)(jie)段(duan)(duan)(duan)，粗加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)階(jie)(jie)段(duan)(duan)(duan)，半精加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)階(jie)(jie)段(duan)(duan)(duan)，精加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)階(jie)(jie)段(duan)(duan)(duan)，終加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)階(jie)(jie)段(duan)(duan)(duan)。為(wei)了(le)消除殘余應(ying)(ying)力(li)，整個工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)安(an)排了(le)四次消除殘余應(ying)(ying)力(li)的(de)(de)熱處(chu)理，并(bing)嚴格規定機械加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)和(he)熱處(chu)理后(hou)不準冷(leng)校(xiao)直，龍門(men)銑(xian)床(chuang)T型絲(si)(si)桿(gan)廠家，以防止產(chan)生(sheng)殘余應(ying)(ying)力(li)。為(wei)了(le)消除加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)過(guo)程(cheng)中(zhong)(zhong)的(de)(de)變(bian)形，每(mei)次加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)工(gong)(gong)(gong)(gong)件(jian)應(ying)(ying)垂直吊放，并(bing)采(cai)用(yong)留加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)余量分層加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)方(fang)法，經過(guo)多道工(gong)(gong)(gong)(gong)序(xu)逐(zhu)步消除加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)過(guo)程(cheng)中(zhong)(zhong)引起的(de)(de)變(bian)形