自動鉛筆的構造是什么

1、筆桿部分

筆桿(gan)是由塑(su)料構造，用壓塑(su)機壓成，用黃(huang)白油進行加工處理，是筆桿(gan)更加光(guang)亮(liang)，它(ta)分(fen)為上(shang)下部分(fen)，通過上(shang)下套(tao)金木(mu)的關系，旋轉管子(zi)達(da)到伸縮的目(mu)的。

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2、筆芯部分

三肩胛頭(tou)上有螺(luo)絲(si)，中(zhong)間(jian)比較大(da)，其實用(yong)(yong)銅棒在車(che)(che)床上制成(cheng)(cheng)，后(hou)端更(geng)大(da)，作用(yong)(yong)是(shi)(shi)拽(zhuai)住壁板不是(shi)(shi)內部結(jie)構搖動。大(da)小管(guan)子(zi)(zi)(zi)與(yu)(yu)長(chang)管(guan)子(zi)(zi)(zi)是(shi)(shi)用(yong)(yong)鐵皮及(ji)銅皮分別沖(chong)(chong)成(cheng)(cheng)。小牙齒(chi)是(shi)(shi)以(yi)鐵絲(si)用(yong)(yong)沖(chong)(chong)床沖(chong)(chong)制而成(cheng)(cheng)，然后(hou)再鍍銅，以(yi)免生銹(xiu)而影響質量。彌簧(huang)是(shi)(shi)用(yong)(yong)鐵皮裁成(cheng)(cheng)條子(zi)(zi)(zi)，縫光兩邊(bian)，以(yi)搖轉方法搖成(cheng)(cheng)螺(luo)旋形彈簧(huang)，然后(hou)按(an)需要長(chang)度裁斷(duan)，再經切角(jiao)、踏圓、沖(chong)(chong)珠頭(tou)，最(zui)后(hou)鍍鎳以(yi)防生銹(xiu)。彌簧(huang)管(guan)子(zi)(zi)(zi)是(shi)(shi)用(yong)(yong)生銅棒制成(cheng)(cheng)，整(zheng)修光潔，跣(xian)成(cheng)(cheng)凹口，以(yi)便(bian)與(yu)(yu)彈簧(huang)配(pei)合。小華(hua)司(si)為一中(zhong)間(jian)有孔小圓片(pian)，是(shi)(shi)用(yong)(yong)生銅棒車(che)(che)成(cheng)(cheng)。鋅皮盤是(shi)(shi)用(yong)(yong)鋅皮沖(chong)(chong)制而成(cheng)(cheng)。為鉛芯的儲藏(zang)機構。

3、另件部分

筆(bi)(bi)夾，筆(bi)(bi)夾、內圈、外圈、筆(bi)(bi)夾羅(luo)絲、頭子這些零(ling)件是自動(dong)鉛(qian)筆(bi)(bi)的(de)常見配件，不同的(de)配件有(you)不同的(de)作(zuo)用，例如頭子是用生銅(tong)棒束成，能保護三肩胛(jia)送出(chu)鉛(qian)芯。

活動鉛筆的工作原理介紹

墜芯式靠鉛(qian)(qian)芯重力自動(dong)(dong)(dong)(dong)出(chu)(chu)(chu)鉛(qian)(qian)芯。旋轉式靠旋轉輸(shu)(shu)送(song)鉛(qian)(qian)芯。脈(mo)動(dong)(dong)(dong)(dong)式（撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式）靠撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)輸(shu)(shu)送(song)鉛(qian)(qian)芯，結構有一次撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，即(ji)撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)一次出(chu)(chu)(chu)鉛(qian)(qian)芯。二次撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，第(di)一次撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)筆(bi)(bi)嘴伸(shen)出(chu)(chu)(chu)筆(bi)(bi)桿，第(di)二次撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)鉛(qian)(qian)芯伸(shen)出(chu)(chu)(chu)。雙(shuang)卡頭(tou)撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，采用(yong)雙(shuang)卡頭(tou)結構，縮短了卡頭(tou)和(he)筆(bi)(bi)嘴端部距離，使活動(dong)(dong)(dong)(dong)鉛(qian)(qian)筆(bi)(bi)內最(zui)后剩下的8～15mm的一段殘(can)留(liu)鉛(qian)(qian)芯，不用(yong)撳(qin)(qin)(qin)(qin)動(dong)(dong)(dong)(dong)可(ke)出(chu)(chu)(chu)一支(zhi)整鉛(qian)(qian)芯將其頂出(chu)(chu)(chu)，即(ji)可(ke)連續(xu)書寫(xie)(xie)。自動(dong)(dong)(dong)(dong)補(bu)償式（自動(dong)(dong)(dong)(dong)出(chu)(chu)(chu)芯）無須旋轉或脈(mo)動(dong)(dong)(dong)(dong)裝置，可(ke)自動(dong)(dong)(dong)(dong)補(bu)償鉛(qian)(qian)芯，連續(xu)書寫(xie)(xie)。

脈(mo)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)機芯(xin)(xin)(xin)結(jie)構是(shi)活動(dong)(dong)(dong)(dong)(dong)(dong)鉛(qian)筆(bi)普遍采用的基(ji)本結(jie)構形(xing)式(shi)，主要由(you)筆(bi)桿、尖套(tao)（筆(bi)尖）、固定護芯(xin)(xin)(xin)管(guan)（活動(dong)(dong)(dong)(dong)(dong)(dong)阻(zu)尼）、卡頭(tou)（開(kai)花）、鎖(suo)緊(jin)箍、彈簧(huang)(huang)等組(zu)成。當儲芯(xin)(xin)(xin)管(guan)受撳動(dong)(dong)(dong)(dong)(dong)(dong)壓(ya)力（手指壓(ya)力）作用時，克服彈簧(huang)(huang)的彈性(xing)力向(xiang)下(xia)移(yi)動(dong)(dong)(dong)(dong)(dong)(dong)，并使卡頭(tou)爪片(pian)張開(kai)，同(tong)時鉛(qian)芯(xin)(xin)(xin)依靠自(zi)身(shen)的重力，離開(kai)在儲芯(xin)(xin)(xin)管(guan)內(nei)的原來位(wei)置，在制動(dong)(dong)(dong)(dong)(dong)(dong)元件阻(zu)尼圈(quan)的控制下(xia)沿著(zhu)護芯(xin)(xin)(xin)管(guan)壁移(yi)動(dong)(dong)(dong)(dong)(dong)(dong)一定長度。撳動(dong)(dong)(dong)(dong)(dong)(dong)壓(ya)力釋放后，彈簧(huang)(huang)恢復原位(wei)，鉛(qian)芯(xin)(xin)(xin)被鎖(suo)緊(jin)箍和卡頭(tou)自(zi)動(dong)(dong)(dong)(dong)(dong)(dong)鎖(suo)緊(jin)定位(wei)，完成一次脈(mo)動(dong)(dong)(dong)(dong)(dong)(dong)出(chu)(chu)芯(xin)(xin)(xin)過程。依此(ci)往復即可連續脈(mo)動(dong)(dong)(dong)(dong)(dong)(dong)出(chu)(chu)芯(xin)(xin)(xin)。