加工(gong)石(shi)墨電(dian)極用量(liang)和(he)切機(ji)床的挑(tiao)選(xuan)
車(che)床的選型與(yu)加工(gong)石(shi)墨電(dian)極操(cao)作
加(jia)工(gong)石(shi)墨電(dian)極或(huo)大型石(shi)墨棒(bang)的車(che)床應(ying)滿意以(yi)下(xia)條件(jian):(1)車(che)床頂尖中(zhong)心(xin)高應(ying)大於(yu)待(dai)加(jia)工(gong)石(shi)墨電(dian)極的(de)半徑;(2)車床頂尖間最大距(ju)離(li)應(ying)大於(yu)待(dai)加(jia)工(gong)石(shi)墨電(dian)極的(de)長度(du);(3)軍(jun)床兩導(dao)軌(gui)距(ju)離(li)要(yao)。
加工(gong)石(shi)墨電(dian)極用量(liang)和(he)切機(ji)床的挑(tiao)選(xuan)
寬(kuan),床身橫(heng)截面(mian)積應(ying)大,機(ji)床剛性要(yao)好。因電(dian)極質(zhi)量(liang)大,中(zhong)心(xin)孔也(ye)難(nan)打(da)得完(wan)全對(dui)中(zhong)心(xin),故加工(gong)旋(xuan)轉過程中(zhong)易產(chan)生(sheng)很(hen)大的(de)轉動(dong)慣(guan)量(liang)。機(ji)床剛性不(bu)好,容(rong)易使(shi)機床產(chan)生(sheng)振動(dong),壹(yi)起加工(gong)精(jing)度和(he)光(guang)潔(jie)度(du)下(xia)降(jiang)。現在(zai)通(tong)常(chang)選用的(de)壹(yi)般(ban)車(che)床和(he)電(dian)極加(jia)工(gong)專用車(che)床加工(gong)d350mm以(yi)上電(dian)極時(shi),其剛(gang)度(du)均不(bu)夠好加工(gong)中(zhong)200mm及(ji)其以(yi)下(xia)的(de)電(dian)極,可(ke)選用C.620型頂尖距(ju)離(li)為(wei)1500mm的車(che)床;加工(gong)中(zhong)(250500)m的(de)石(shi)墨電(dian)極,可(ke)選用C630型頂尖距(ju)離(li)為(wei)3000mm的車(che)床或加工(gong)石(shi)墨電(dian)極專用車(che)床,加工(gong)d500mm以(yi)上的電(dian)極,可(ke)選用C-650型車床,車接頭可(ke)選用C625型和(he)C614型車末(mo)。對(dui)於(yu)大廠(chang),加(jia)工(gong)石(shi)墨電(dian)極應(ying)選用組合機(ji)床(自(zi)動(dong)線(xian))。
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