自動鉛筆的構造是什么

1、筆桿部分

筆桿(gan)是由塑料(liao)構造，用壓塑機壓成(cheng)，用黃白油進行加工處理，是筆桿(gan)更(geng)加光亮(liang)，它分(fen)為上下(xia)部分(fen)，通(tong)過(guo)上下(xia)套金木(mu)的關系(xi)，旋轉管(guan)子達到伸縮(suo)的目的。

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2、筆芯部分

三肩胛(jia)頭(tou)上有螺絲(si)，中(zhong)間比較大，其實用(yong)(yong)(yong)銅(tong)棒在車床上制(zhi)(zhi)成(cheng)(cheng)，后端更大，作用(yong)(yong)(yong)是拽住(zhu)壁(bi)板不是內(nei)部結構搖動。大小管(guan)子(zi)與長管(guan)子(zi)是用(yong)(yong)(yong)鐵(tie)皮(pi)(pi)及銅(tong)皮(pi)(pi)分別沖(chong)成(cheng)(cheng)。小牙齒是以(yi)鐵(tie)絲(si)用(yong)(yong)(yong)沖(chong)床沖(chong)制(zhi)(zhi)而(er)成(cheng)(cheng)，然(ran)后再鍍(du)銅(tong)，以(yi)免生(sheng)(sheng)銹而(er)影響質量。彌簧(huang)是用(yong)(yong)(yong)鐵(tie)皮(pi)(pi)裁成(cheng)(cheng)條子(zi)，縫光(guang)兩邊，以(yi)搖轉(zhuan)方法搖成(cheng)(cheng)螺旋形彈簧(huang)，然(ran)后按需要長度裁斷，再經(jing)切(qie)角、踏(ta)圓、沖(chong)珠頭(tou)，最后鍍(du)鎳以(yi)防生(sheng)(sheng)銹。彌簧(huang)管(guan)子(zi)是用(yong)(yong)(yong)生(sheng)(sheng)銅(tong)棒制(zhi)(zhi)成(cheng)(cheng)，整修(xiu)光(guang)潔，跣成(cheng)(cheng)凹(ao)口，以(yi)便(bian)與彈簧(huang)配合。小華(hua)司為一中(zhong)間有孔小圓片，是用(yong)(yong)(yong)生(sheng)(sheng)銅(tong)棒車成(cheng)(cheng)。鋅(xin)皮(pi)(pi)盤是用(yong)(yong)(yong)鋅(xin)皮(pi)(pi)沖(chong)制(zhi)(zhi)而(er)成(cheng)(cheng)。為鉛芯(xin)的儲藏機構。

3、另件部分

筆(bi)夾(jia)，筆(bi)夾(jia)、內圈(quan)、外圈(quan)、筆(bi)夾(jia)羅絲、頭子這些零件(jian)是(shi)自(zi)動鉛(qian)筆(bi)的(de)常見(jian)配件(jian)，不同(tong)的(de)配件(jian)有不同(tong)的(de)作(zuo)用，例如頭子是(shi)用生銅棒束成，能保護三肩胛送出鉛(qian)芯。

活動鉛筆的工作原理介紹

墜芯(xin)式靠(kao)鉛(qian)芯(xin)重力(li)自(zi)(zi)動(dong)出鉛(qian)芯(xin)。旋轉式靠(kao)旋轉輸(shu)送(song)鉛(qian)芯(xin)。脈動(dong)式（撳(qin)動(dong)式）靠(kao)撳(qin)動(dong)輸(shu)送(song)鉛(qian)芯(xin)，結構(gou)有一次(ci)(ci)(ci)撳(qin)動(dong)式，即撳(qin)動(dong)一次(ci)(ci)(ci)出鉛(qian)芯(xin)。二次(ci)(ci)(ci)撳(qin)動(dong)式，第一次(ci)(ci)(ci)撳(qin)動(dong)筆嘴伸(shen)出筆桿，第二次(ci)(ci)(ci)撳(qin)動(dong)鉛(qian)芯(xin)伸(shen)出。雙卡(ka)(ka)頭(tou)(tou)撳(qin)動(dong)式，采用雙卡(ka)(ka)頭(tou)(tou)結構(gou)，縮短了卡(ka)(ka)頭(tou)(tou)和筆嘴端部距(ju)離，使活(huo)動(dong)鉛(qian)筆內最(zui)后剩下的8～15mm的一段殘留鉛(qian)芯(xin)，不用撳(qin)動(dong)可(ke)出一支整鉛(qian)芯(xin)將(jiang)其頂出，即可(ke)連續書寫。自(zi)(zi)動(dong)補(bu)償(chang)式（自(zi)(zi)動(dong)出芯(xin)）無須(xu)旋轉或脈動(dong)裝置，可(ke)自(zi)(zi)動(dong)補(bu)償(chang)鉛(qian)芯(xin)，連續書寫。

脈動(dong)(dong)(dong)式機(ji)芯(xin)(xin)(xin)(xin)結構是活(huo)動(dong)(dong)(dong)鉛(qian)(qian)(qian)筆(bi)(bi)普遍采用的(de)基(ji)本結構形式，主要由筆(bi)(bi)桿、尖(jian)套（筆(bi)(bi)尖(jian)）、固定護芯(xin)(xin)(xin)(xin)管（活(huo)動(dong)(dong)(dong)阻(zu)尼）、卡頭(tou)（開花(hua)）、鎖(suo)(suo)緊箍、彈簧(huang)等組成。當儲(chu)芯(xin)(xin)(xin)(xin)管受撳動(dong)(dong)(dong)壓力(li)(li)（手指(zhi)壓力(li)(li)）作(zuo)用時，克服彈簧(huang)的(de)彈性力(li)(li)向(xiang)下移(yi)(yi)動(dong)(dong)(dong)，并使(shi)卡頭(tou)爪片張開，同時鉛(qian)(qian)(qian)芯(xin)(xin)(xin)(xin)依(yi)靠(kao)自(zi)身的(de)重力(li)(li)，離開在儲(chu)芯(xin)(xin)(xin)(xin)管內的(de)原來(lai)位置，在制(zhi)動(dong)(dong)(dong)元(yuan)件(jian)阻(zu)尼圈的(de)控制(zhi)下沿(yan)著護芯(xin)(xin)(xin)(xin)管壁移(yi)(yi)動(dong)(dong)(dong)一(yi)定長(chang)度。撳動(dong)(dong)(dong)壓力(li)(li)釋放后，彈簧(huang)恢復原位，鉛(qian)(qian)(qian)芯(xin)(xin)(xin)(xin)被鎖(suo)(suo)緊箍和卡頭(tou)自(zi)動(dong)(dong)(dong)鎖(suo)(suo)緊定位，完(wan)成一(yi)次脈動(dong)(dong)(dong)出芯(xin)(xin)(xin)(xin)過程。依(yi)此往(wang)復即可連續脈動(dong)(dong)(dong)出芯(xin)(xin)(xin)(xin)。