自動鉛筆的構造是什么

1、筆桿部分

筆桿是由塑(su)料構造，用(yong)(yong)壓塑(su)機(ji)壓成，用(yong)(yong)黃白油進行加工處理(li)，是筆桿更加光亮，它分為上下部分，通過上下套金木的關系(xi)，旋轉管(guan)子達(da)到伸縮的目的。

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2、筆芯部分

三肩胛頭上有螺(luo)絲，中間(jian)比較大(da)，其實用銅棒在車床(chuang)(chuang)上制(zhi)成(cheng)，后(hou)端(duan)更大(da)，作用是(shi)(shi)(shi)拽住壁(bi)板不是(shi)(shi)(shi)內部結構(gou)搖(yao)動(dong)。大(da)小(xiao)(xiao)管子(zi)與(yu)長管子(zi)是(shi)(shi)(shi)用鐵皮(pi)及銅皮(pi)分別沖(chong)(chong)成(cheng)。小(xiao)(xiao)牙齒(chi)是(shi)(shi)(shi)以(yi)鐵絲用沖(chong)(chong)床(chuang)(chuang)沖(chong)(chong)制(zhi)而成(cheng)，然后(hou)再(zai)鍍銅，以(yi)免生(sheng)銹(xiu)而影(ying)響質量(liang)。彌簧(huang)(huang)是(shi)(shi)(shi)用鐵皮(pi)裁成(cheng)條子(zi)，縫光兩邊，以(yi)搖(yao)轉(zhuan)方法搖(yao)成(cheng)螺(luo)旋形彈(dan)簧(huang)(huang)，然后(hou)按需要長度裁斷(duan)，再(zai)經(jing)切角、踏圓、沖(chong)(chong)珠頭，最后(hou)鍍鎳以(yi)防(fang)生(sheng)銹(xiu)。彌簧(huang)(huang)管子(zi)是(shi)(shi)(shi)用生(sheng)銅棒制(zhi)成(cheng)，整修光潔，跣(xian)成(cheng)凹口，以(yi)便與(yu)彈(dan)簧(huang)(huang)配合。小(xiao)(xiao)華司為一中間(jian)有孔(kong)小(xiao)(xiao)圓片，是(shi)(shi)(shi)用生(sheng)銅棒車成(cheng)。鋅皮(pi)盤是(shi)(shi)(shi)用鋅皮(pi)沖(chong)(chong)制(zhi)而成(cheng)。為鉛芯(xin)的儲藏機構(gou)。

3、另件部分

筆(bi)(bi)夾(jia)(jia)，筆(bi)(bi)夾(jia)(jia)、內圈、外圈、筆(bi)(bi)夾(jia)(jia)羅絲、頭(tou)子這(zhe)些(xie)零(ling)件是(shi)自動鉛筆(bi)(bi)的常見配件，不(bu)同(tong)的配件有不(bu)同(tong)的作用(yong)，例如頭(tou)子是(shi)用(yong)生(sheng)銅棒束成，能保護三肩胛送(song)出鉛芯(xin)。

活動鉛筆的工作原理介紹

墜芯(xin)式(shi)(shi)(shi)靠鉛(qian)(qian)芯(xin)重(zhong)力自(zi)動(dong)(dong)(dong)(dong)(dong)(dong)出(chu)鉛(qian)(qian)芯(xin)。旋(xuan)轉(zhuan)式(shi)(shi)(shi)靠旋(xuan)轉(zhuan)輸送(song)鉛(qian)(qian)芯(xin)。脈(mo)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)(shi)（撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)(shi)）靠撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)輸送(song)鉛(qian)(qian)芯(xin)，結構有(you)一次撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)(shi)，即撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)一次出(chu)鉛(qian)(qian)芯(xin)。二(er)(er)次撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)(shi)，第一次撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)筆(bi)(bi)嘴(zui)(zui)伸出(chu)筆(bi)(bi)桿，第二(er)(er)次撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)鉛(qian)(qian)芯(xin)伸出(chu)。雙(shuang)卡(ka)頭撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)(shi)，采用雙(shuang)卡(ka)頭結構，縮短(duan)了卡(ka)頭和筆(bi)(bi)嘴(zui)(zui)端部(bu)距離，使活(huo)動(dong)(dong)(dong)(dong)(dong)(dong)鉛(qian)(qian)筆(bi)(bi)內(nei)最后剩(sheng)下的8～15mm的一段(duan)殘留鉛(qian)(qian)芯(xin)，不(bu)用撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)(dong)(dong)可出(chu)一支(zhi)整鉛(qian)(qian)芯(xin)將其頂出(chu)，即可連續書寫。自(zi)動(dong)(dong)(dong)(dong)(dong)(dong)補償式(shi)(shi)(shi)（自(zi)動(dong)(dong)(dong)(dong)(dong)(dong)出(chu)芯(xin)）無須旋(xuan)轉(zhuan)或脈(mo)動(dong)(dong)(dong)(dong)(dong)(dong)裝置，可自(zi)動(dong)(dong)(dong)(dong)(dong)(dong)補償鉛(qian)(qian)芯(xin)，連續書寫。

脈(mo)動(dong)(dong)(dong)(dong)(dong)式機芯結構(gou)是(shi)活動(dong)(dong)(dong)(dong)(dong)鉛(qian)筆普遍(bian)采(cai)用(yong)的(de)(de)基本結構(gou)形式，主要(yao)由筆桿、尖套（筆尖）、固定(ding)護(hu)芯管（活動(dong)(dong)(dong)(dong)(dong)阻尼）、卡頭(tou)（開(kai)花(hua)）、鎖(suo)緊(jin)箍、彈簧(huang)等(deng)組成。當儲芯管受撳動(dong)(dong)(dong)(dong)(dong)壓力(li)（手指(zhi)壓力(li)）作(zuo)用(yong)時(shi)，克服彈簧(huang)的(de)(de)彈性力(li)向(xiang)下移動(dong)(dong)(dong)(dong)(dong)，并使卡頭(tou)爪片張開(kai)，同(tong)時(shi)鉛(qian)芯依靠自身(shen)的(de)(de)重力(li)，離開(kai)在儲芯管內的(de)(de)原來位(wei)置，在制動(dong)(dong)(dong)(dong)(dong)元(yuan)件阻尼圈的(de)(de)控制下沿著護(hu)芯管壁移動(dong)(dong)(dong)(dong)(dong)一定(ding)長度。撳動(dong)(dong)(dong)(dong)(dong)壓力(li)釋放后，彈簧(huang)恢復原位(wei)，鉛(qian)芯被鎖(suo)緊(jin)箍和卡頭(tou)自動(dong)(dong)(dong)(dong)(dong)鎖(suo)緊(jin)定(ding)位(wei)，完成一次脈(mo)動(dong)(dong)(dong)(dong)(dong)出芯過程。依此往(wang)復即可連續脈(mo)動(dong)(dong)(dong)(dong)(dong)出芯。