自動鉛筆的構造是什么

1、筆桿部分

筆桿是由塑(su)(su)料構造，用壓塑(su)(su)機壓成，用黃白油(you)進行(xing)加(jia)工(gong)處理，是筆桿更加(jia)光亮，它(ta)分(fen)為上(shang)下(xia)部(bu)分(fen)，通過上(shang)下(xia)套金(jin)木的(de)關系，旋轉管子達到伸(shen)縮的(de)目的(de)。

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2、筆芯部分

三肩胛頭(tou)上(shang)有螺(luo)(luo)絲，中間比(bi)較大(da)，其實用(yong)(yong)(yong)銅(tong)棒在車(che)床上(shang)制(zhi)成(cheng)(cheng)(cheng)(cheng)，后端更大(da)，作用(yong)(yong)(yong)是(shi)拽住壁板不是(shi)內(nei)部結構搖動。大(da)小管(guan)子(zi)與長管(guan)子(zi)是(shi)用(yong)(yong)(yong)鐵(tie)皮(pi)(pi)及銅(tong)皮(pi)(pi)分別沖(chong)成(cheng)(cheng)(cheng)(cheng)。小牙齒是(shi)以鐵(tie)絲用(yong)(yong)(yong)沖(chong)床沖(chong)制(zhi)而成(cheng)(cheng)(cheng)(cheng)，然后再(zai)鍍銅(tong)，以免生銹而影響質量(liang)。彌簧(huang)(huang)是(shi)用(yong)(yong)(yong)鐵(tie)皮(pi)(pi)裁成(cheng)(cheng)(cheng)(cheng)條子(zi)，縫(feng)光兩邊，以搖轉方法搖成(cheng)(cheng)(cheng)(cheng)螺(luo)(luo)旋形彈(dan)簧(huang)(huang)，然后按需要長度(du)裁斷，再(zai)經(jing)切角、踏圓(yuan)、沖(chong)珠頭(tou)，最后鍍鎳以防生銹。彌簧(huang)(huang)管(guan)子(zi)是(shi)用(yong)(yong)(yong)生銅(tong)棒制(zhi)成(cheng)(cheng)(cheng)(cheng)，整修光潔，跣成(cheng)(cheng)(cheng)(cheng)凹口(kou)，以便與彈(dan)簧(huang)(huang)配合。小華司(si)為一中間有孔小圓(yuan)片，是(shi)用(yong)(yong)(yong)生銅(tong)棒車(che)成(cheng)(cheng)(cheng)(cheng)。鋅皮(pi)(pi)盤是(shi)用(yong)(yong)(yong)鋅皮(pi)(pi)沖(chong)制(zhi)而成(cheng)(cheng)(cheng)(cheng)。為鉛(qian)芯的(de)儲藏(zang)機構。

3、另件部分

筆(bi)(bi)夾(jia)，筆(bi)(bi)夾(jia)、內圈(quan)、外圈(quan)、筆(bi)(bi)夾(jia)羅絲(si)、頭(tou)子這(zhe)些零件是自動鉛筆(bi)(bi)的常見配件，不(bu)同的配件有不(bu)同的作用(yong)，例如頭(tou)子是用(yong)生銅棒束(shu)成(cheng)，能保(bao)護三肩胛送出鉛芯(xin)。

活動鉛筆的工作原理介紹

墜(zhui)芯(xin)(xin)(xin)(xin)式(shi)靠(kao)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)重(zhong)力(li)自動(dong)(dong)(dong)出(chu)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)。旋(xuan)轉(zhuan)式(shi)靠(kao)旋(xuan)轉(zhuan)輸送(song)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)。脈(mo)動(dong)(dong)(dong)式(shi)（撳(qin)(qin)動(dong)(dong)(dong)式(shi)）靠(kao)撳(qin)(qin)動(dong)(dong)(dong)輸送(song)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)，結(jie)構有(you)一次(ci)撳(qin)(qin)動(dong)(dong)(dong)式(shi)，即(ji)撳(qin)(qin)動(dong)(dong)(dong)一次(ci)出(chu)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)。二次(ci)撳(qin)(qin)動(dong)(dong)(dong)式(shi)，第一次(ci)撳(qin)(qin)動(dong)(dong)(dong)筆嘴伸出(chu)筆桿，第二次(ci)撳(qin)(qin)動(dong)(dong)(dong)鉛(qian)(qian)芯(xin)(xin)(xin)(xin)伸出(chu)。雙卡(ka)(ka)(ka)頭撳(qin)(qin)動(dong)(dong)(dong)式(shi)，采用雙卡(ka)(ka)(ka)頭結(jie)構，縮短了卡(ka)(ka)(ka)頭和筆嘴端部(bu)距(ju)離，使活動(dong)(dong)(dong)鉛(qian)(qian)筆內最(zui)后剩(sheng)下的8～15mm的一段殘留鉛(qian)(qian)芯(xin)(xin)(xin)(xin)，不用撳(qin)(qin)動(dong)(dong)(dong)可(ke)出(chu)一支整鉛(qian)(qian)芯(xin)(xin)(xin)(xin)將其頂出(chu)，即(ji)可(ke)連續書(shu)寫。自動(dong)(dong)(dong)補償式(shi)（自動(dong)(dong)(dong)出(chu)芯(xin)(xin)(xin)(xin)）無須旋(xuan)轉(zhuan)或(huo)脈(mo)動(dong)(dong)(dong)裝(zhuang)置(zhi)，可(ke)自動(dong)(dong)(dong)補償鉛(qian)(qian)芯(xin)(xin)(xin)(xin)，連續書(shu)寫。

脈動(dong)(dong)(dong)(dong)式(shi)機芯結(jie)構是活動(dong)(dong)(dong)(dong)鉛筆(bi)普遍采(cai)用的(de)基本結(jie)構形(xing)式(shi)，主要(yao)由筆(bi)桿、尖套（筆(bi)尖）、固定(ding)(ding)護芯管(guan)(guan)(guan)（活動(dong)(dong)(dong)(dong)阻尼(ni)）、卡頭(tou)（開(kai)花）、鎖緊箍、彈簧(huang)等組成(cheng)。當儲芯管(guan)(guan)(guan)受撳動(dong)(dong)(dong)(dong)壓力（手指壓力）作用時，克服彈簧(huang)的(de)彈性力向下移動(dong)(dong)(dong)(dong)，并使卡頭(tou)爪(zhua)片張開(kai)，同時鉛芯依(yi)靠自身的(de)重力，離開(kai)在儲芯管(guan)(guan)(guan)內(nei)的(de)原來位置，在制動(dong)(dong)(dong)(dong)元件(jian)阻尼(ni)圈的(de)控制下沿著護芯管(guan)(guan)(guan)壁(bi)移動(dong)(dong)(dong)(dong)一定(ding)(ding)長度。撳動(dong)(dong)(dong)(dong)壓力釋放后，彈簧(huang)恢復(fu)(fu)原位，鉛芯被鎖緊箍和卡頭(tou)自動(dong)(dong)(dong)(dong)鎖緊定(ding)(ding)位，完(wan)成(cheng)一次脈動(dong)(dong)(dong)(dong)出芯過(guo)程(cheng)。依(yi)此往復(fu)(fu)即可連續(xu)脈動(dong)(dong)(dong)(dong)出芯。