一、滾壓刀正確使用方法
工具/原料:滾(gun)壓刀具、需要滾壓加工(gong)的金屬工(gong)件(jian)、機床:鉆床、車床、銑床、加工中心等(deng)任(ren)意一種(zhong)。
方法/步驟:
1、在鉆(zhan)床上使用(yong):先將滾壓刀具柄部(莫氏錐柄,直柄必(bi)須用(yong)鉆(zhan)夾頭)裝(zhuang)入鉆(zhan)床主軸;
2、再將(jiang)工(gong)件(jian)(jian)(jian)(jian)放(fang)置在鉆(zhan)(zhan)床工(gong)作臺上,根(gen)據需要選擇是否(fou)使用夾(jia)具固(gu)(gu)定(ding)(ding)工(gong)件(jian)(jian)(jian)(jian),這里需要注意的是,工(gong)件(jian)(jian)(jian)(jian)要滾壓的孔(kong)必須與鉆(zhan)(zhan)床主軸(zhou)(zhou)(zhou)(zhou)同(tong)心(xin),固(gu)(gu)定(ding)(ding)面與主軸(zhou)(zhou)(zhou)(zhou)垂(chui)直,如不能(neng)保證工(gong)件(jian)(jian)(jian)(jian)孔(kong)與鉆(zhan)(zhan)床主軸(zhou)(zhou)(zhou)(zhou)同(tong)心(xin),固(gu)(gu)定(ding)(ding)工(gong)件(jian)(jian)(jian)(jian)的夾(jia)具就不能(neng)固(gu)(gu)定(ding)(ding)在工(gong)作臺上,否(fou)則將(jiang)損壞滾壓刀具。不固(gu)(gu)定(ding)(ding)工(gong)件(jian)(jian)(jian)(jian),滾壓刀會將(jiang)工(gong)件(jian)(jian)(jian)(jian)自動(dong)與刀具主軸(zhou)(zhou)(zhou)(zhou)同(tong)心(xin)。
3、再啟動鉆床,啟動前確認鉆床轉速(su)與滾壓刀匹(pi)配,太(tai)快會讓(rang)刀具磨損(sun)加(jia)巨(ju),滾壓面精(jing)度降低。太(tai)慢,工效(xiao)太(tai)低!具體參(can)考(kao)說(shuo)明書。使刀具旋轉進入(ru)要(yao)滾壓的孔。
4、滾壓完(wan)成(cheng),不(bu)要關閉機(ji)床,刀具旋轉退(tui)出工(gong)件!如此,完(wan)成(cheng)一個(ge)工(gong)件的滾壓操(cao)作。
注意事項:
另:根據工件材質選擇是否加冷卻液(油性材質)。車床上使用滾壓(ya)刀具則是(shi)工件旋(xuan)轉。
二、滾壓刀加工余量多少
滾(gun)(gun)(gun)壓(ya)刀加(jia)(jia)工余(yu)量直接影(ying)響著被加(jia)(jia)工件的金屬塑性變形(xing)(xing)和彈性變形(xing)(xing),最終影(ying)響加(jia)(jia)工表(biao)面質(zhi)量。滾(gun)(gun)(gun)壓(ya)刀滾(gun)(gun)(gun)壓(ya)余(yu)量太(tai)小,不(bu)(bu)能使待加(jia)(jia)工表(biao)面的波峰壓(ya)下(xia)去,達不(bu)(bu)到理想的粗糙(cao)度。滾(gun)(gun)(gun)壓(ya)刀滾(gun)(gun)(gun)壓(ya)余(yu)量太(tai)大,零件表(biao)面局部應力加(jia)(jia)大,容(rong)易形(xing)(xing)成破裂、起磷,反而(er)降低了(le)表(biao)面質(zhi)量。
滾(gun)(gun)壓(ya)(ya)(ya)(ya)刀滾(gun)(gun)壓(ya)(ya)(ya)(ya)余量(liang)的(de)(de)(de)選(xuan)擇一(yi)般與被加(jia)工(gong)工(gong)件材料的(de)(de)(de)機械性能、硬(ying)度(du)(du)、轉速(su)、進給量(liang)、零件的(de)(de)(de)直徑及待加(jia)工(gong)表(biao)面(mian)粗(cu)糙(cao)度(du)(du)有(you)關(guan)。在實際生(sheng)產(chan)中,余量(liang)的(de)(de)(de)選(xuan)擇通過(guo)實驗來確定。在保證達(da)到所(suo)要求的(de)(de)(de)尺(chi)寸精度(du)(du)和表(biao)面(mian)粗(cu)糙(cao)度(du)(du)的(de)(de)(de)前提(ti)下,盡量(liang)選(xuan)擇較(jiao)小滾(gun)(gun)壓(ya)(ya)(ya)(ya)量(liang)。小小一(yi)個滾(gun)(gun)壓(ya)(ya)(ya)(ya)懇的(de)(de)(de)余量(liang)問題,就影響加(jia)工(gong)工(gong)件的(de)(de)(de)滾(gun)(gun)壓(ya)(ya)(ya)(ya)效果!