離(li)(li)合(he)器安裝在發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)與變(bian)(bian)速(su)器之(zhi)間，是(shi)汽(qi)車(che)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)系(xi)中直接(jie)與發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)相(xiang)聯系(xi)的(de)(de)(de)總成件(jian)。通(tong)常(chang)離(li)(li)合(he)器與發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)曲軸的(de)(de)(de)飛(fei)輪組安裝在一(yi)(yi)起(qi)，是(shi)發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)與汽(qi)車(che)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)系(xi)之(zhi)間切(qie)(qie)斷(duan)和傳(chuan)(chuan)(chuan)遞動(dong)(dong)(dong)(dong)力的(de)(de)(de)部件(jian)。汽(qi)車(che)從起(qi)步到正(zheng)常(chang)行(xing)駛(shi)的(de)(de)(de)整個過程中，駕(jia)駛(shi)員可根據(ju)需要(yao)操(cao)縱(zong)離(li)(li)合(he)器，使發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)和傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)系(xi)暫(zan)時(shi)分離(li)(li)或(huo)逐漸接(jie)合(he)，以切(qie)(qie)斷(duan)或(huo)傳(chuan)(chuan)(chuan)遞發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)向傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)系(xi)輸(shu)出的(de)(de)(de)動(dong)(dong)(dong)(dong)力。它(ta)的(de)(de)(de)作(zuo)用是(shi)使發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)與變(bian)(bian)速(su)器之(zhi)間能(neng)逐漸接(jie)合(he)，從而(er)保(bao)證汽(qi)車(che)平穩(wen)起(qi)步；暫(zan)時(shi)切(qie)(qie)斷(duan)發(fa)(fa)(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)與變(bian)(bian)速(su)器之(zhi)間的(de)(de)(de)聯系(xi)，以便于換檔(dang)和減少換檔(dang)時(shi)的(de)(de)(de)沖擊；當汽(qi)車(che)緊急制動(dong)(dong)(dong)(dong)時(shi)能(neng)起(qi)分離(li)(li)作(zuo)用，防止變(bian)(bian)速(su)器等傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)系(xi)統過載，從而(er)起(qi)到一(yi)(yi)定的(de)(de)(de)保(bao)護作(zuo)用。

離合器(qi)模具的(de)鑄(zhu)(zhu)(zhu)造(zao)(zao)方法的(de)產(chan)生減少了生產(chan)時間，有(you)效提高生產(chan)效率(lv)，而(er)且消(xiao)(xiao)失模鑄(zhu)(zhu)(zhu)造(zao)(zao)是(shi)一項近凈(jing)成(cheng)型(xing)鑄(zhu)(zhu)(zhu)造(zao)(zao)工藝，與普通(tong)砂型(xing)鑄(zhu)(zhu)(zhu)造(zao)(zao)相比(bi)，鑄(zhu)(zhu)(zhu)鐵件(jian)表面粗糙度降低2~3個(ge)等級，達到(dao)Ra 6.3~12.5μm；機械加工余量(liang)(liang)減少30~60%，對某些零件(jian)甚(shen)至可(ke)以不(bu)加工；鑄(zhu)(zhu)(zhu)件(jian)尺寸精度達到(dao)CT 7~9，鑄(zhu)(zhu)(zhu)件(jian)壁厚(hou)偏差能夠控(kong)制在-0.15~+0.15mm之(zhi)間。鑄(zhu)(zhu)(zhu)件(jian)重(zhong)量(liang)(liang)減輕10~25%；金屬利用率(lv)（加工后成(cheng)品(pin)重(zhong)量(liang)(liang)/鑄(zhu)(zhu)(zhu)造(zao)(zao)毛坯重(zhong)量(liang)(liang)）可(ke)達94~97%。插入小芯可(ke)鑄(zhu)(zhu)(zhu)出φ3—5mm小孔，直徑(jing)大(da)于(yu)6mm的(de)淺盲孔可(ke)直接(jie)鑄(zhu)(zhu)(zhu)出。所以，消(xiao)(xiao)失模鑄(zhu)(zhu)(zhu)造(zao)(zao)是(shi)很值(zhi)得推廣(guang)的(de)半(ban)精密鑄(zhu)(zhu)(zhu)造(zao)(zao)模具制造(zao)(zao)技術。