一、滾壓刀正確使用方法
工具/原料:滾壓(ya)刀具、需要滾(gun)壓加工(gong)的金(jin)屬工(gong)件、機床:鉆床、車床、銑床、加工中心(xin)等任(ren)意一種。
方法/步驟:
1、在鉆(zhan)床上使用:先將(jiang)滾壓(ya)刀(dao)具柄部(莫氏錐柄,直柄必須(xu)用鉆(zhan)夾頭)裝入鉆(zhan)床主軸(zhou);
2、再(zai)將工(gong)(gong)件(jian)放置在鉆(zhan)床(chuang)工(gong)(gong)作臺(tai)上,根(gen)據(ju)需要(yao)選擇(ze)是(shi)否(fou)使用夾具固(gu)(gu)定(ding)工(gong)(gong)件(jian),這(zhe)里需要(yao)注意的(de)是(shi),工(gong)(gong)件(jian)要(yao)滾(gun)壓的(de)孔(kong)必須(xu)與(yu)鉆(zhan)床(chuang)主軸(zhou)同(tong)心,固(gu)(gu)定(ding)面與(yu)主軸(zhou)垂直(zhi),如不能(neng)保(bao)證工(gong)(gong)件(jian)孔(kong)與(yu)鉆(zhan)床(chuang)主軸(zhou)同(tong)心,固(gu)(gu)定(ding)工(gong)(gong)件(jian)的(de)夾具就不能(neng)固(gu)(gu)定(ding)在工(gong)(gong)作臺(tai)上,否(fou)則(ze)將損(sun)壞(huai)滾(gun)壓刀(dao)具。不固(gu)(gu)定(ding)工(gong)(gong)件(jian),滾(gun)壓刀(dao)會將工(gong)(gong)件(jian)自動與(yu)刀(dao)具主軸(zhou)同(tong)心。
3、再啟(qi)動(dong)鉆(zhan)床,啟(qi)動(dong)前確認鉆(zhan)床轉(zhuan)速與滾壓(ya)刀匹配,太(tai)快會讓(rang)刀具磨損加巨,滾壓(ya)面精度降低。太(tai)慢,工效(xiao)太(tai)低!具體(ti)參考說明書。使刀具旋轉進入要(yao)滾(gun)壓的孔。
4、滾壓(ya)完成,不要關閉機床,刀具旋轉(zhuan)退出(chu)工(gong)件(jian)(jian)!如此,完成一個工(gong)件(jian)(jian)的滾壓(ya)操作(zuo)。
注意事項:
另:根據工件材質選擇是否加冷卻液(油性材質)。車床上(shang)使用(yong)滾壓刀具則是(shi)工件旋(xuan)轉(zhuan)。
二、滾壓刀加工余量多少
滾壓(ya)刀(dao)加(jia)工(gong)(gong)余量直接(jie)影響著被加(jia)工(gong)(gong)件(jian)的金屬塑性(xing)變形和彈(dan)性(xing)變形,最終影響加(jia)工(gong)(gong)表(biao)面(mian)質量。滾壓(ya)刀(dao)滾壓(ya)余量太小(xiao),不(bu)能使(shi)待加(jia)工(gong)(gong)表(biao)面(mian)的波峰壓(ya)下去,達不(bu)到理(li)想(xiang)的粗糙度(du)。滾壓(ya)刀(dao)滾壓(ya)余量太大,零件(jian)表(biao)面(mian)局(ju)部應力加(jia)大,容易形成(cheng)破裂、起磷,反而降低了(le)表(biao)面(mian)質量。
滾(gun)(gun)壓刀滾(gun)(gun)壓余(yu)量(liang)的(de)(de)(de)選(xuan)擇一(yi)(yi)般(ban)與被加工(gong)工(gong)件(jian)(jian)材料(liao)的(de)(de)(de)機械(xie)性能、硬度、轉(zhuan)速、進(jin)給量(liang)、零件(jian)(jian)的(de)(de)(de)直徑及(ji)待加工(gong)表(biao)面粗糙度有關。在實際生產中,余(yu)量(liang)的(de)(de)(de)選(xuan)擇通過實驗(yan)來確(que)定(ding)。在保證達到所要求的(de)(de)(de)尺寸精度和(he)表(biao)面粗糙度的(de)(de)(de)前(qian)提下(xia),盡量(liang)選(xuan)擇較小(xiao)(xiao)滾(gun)(gun)壓量(liang)。小(xiao)(xiao)小(xiao)(xiao)一(yi)(yi)個(ge)滾(gun)(gun)壓懇的(de)(de)(de)余(yu)量(liang)問題(ti),就影響加工(gong)工(gong)件(jian)(jian)的(de)(de)(de)滾(gun)(gun)壓效果!