自動鉛筆的構造是什么

1、筆桿部分

筆桿是由塑料構(gou)造，用壓塑機壓成，用黃白(bai)油進(jin)行(xing)加工處(chu)理，是筆桿更加光亮(liang)，它分(fen)為上(shang)下部分(fen)，通過上(shang)下套金木的關系，旋轉管(guan)子(zi)達(da)到伸縮的目的。

該圖片由注冊用戶"橘子de殿堂"提供，版權聲明反饋

2、筆芯部分

三肩胛頭上有螺絲，中間(jian)比較(jiao)大(da)，其實用銅(tong)棒(bang)在車(che)床(chuang)上制(zhi)成(cheng)，后端更大(da)，作用是(shi)(shi)(shi)(shi)(shi)拽(zhuai)住壁(bi)板(ban)不是(shi)(shi)(shi)(shi)(shi)內(nei)部結構(gou)搖動(dong)。大(da)小(xiao)管子(zi)與長(chang)管子(zi)是(shi)(shi)(shi)(shi)(shi)用鐵(tie)皮及銅(tong)皮分別(bie)沖(chong)成(cheng)。小(xiao)牙齒是(shi)(shi)(shi)(shi)(shi)以(yi)(yi)鐵(tie)絲用沖(chong)床(chuang)沖(chong)制(zhi)而(er)(er)成(cheng)，然后再鍍(du)銅(tong)，以(yi)(yi)免生(sheng)(sheng)(sheng)銹而(er)(er)影響質量。彌簧(huang)是(shi)(shi)(shi)(shi)(shi)用鐵(tie)皮裁成(cheng)條子(zi)，縫光(guang)兩邊，以(yi)(yi)搖轉(zhuan)方(fang)法(fa)搖成(cheng)螺旋形(xing)彈簧(huang)，然后按需要長(chang)度裁斷，再經切角(jiao)、踏圓、沖(chong)珠頭，最后鍍(du)鎳以(yi)(yi)防生(sheng)(sheng)(sheng)銹。彌簧(huang)管子(zi)是(shi)(shi)(shi)(shi)(shi)用生(sheng)(sheng)(sheng)銅(tong)棒(bang)制(zhi)成(cheng)，整修光(guang)潔，跣成(cheng)凹口，以(yi)(yi)便(bian)與彈簧(huang)配合。小(xiao)華司(si)為一中間(jian)有孔小(xiao)圓片，是(shi)(shi)(shi)(shi)(shi)用生(sheng)(sheng)(sheng)銅(tong)棒(bang)車(che)成(cheng)。鋅皮盤是(shi)(shi)(shi)(shi)(shi)用鋅皮沖(chong)制(zhi)而(er)(er)成(cheng)。為鉛芯的(de)儲藏機構(gou)。

3、另件部分

筆(bi)夾，筆(bi)夾、內圈、外(wai)圈、筆(bi)夾羅絲、頭(tou)子這(zhe)些零(ling)件是自動鉛筆(bi)的常見配(pei)件，不同的配(pei)件有不同的作(zuo)用(yong)，例如(ru)頭(tou)子是用(yong)生銅棒束成，能(neng)保(bao)護三肩胛送出鉛芯。

活動鉛筆的工作原理介紹

墜芯(xin)式靠(kao)鉛(qian)(qian)芯(xin)重(zhong)力自(zi)動(dong)(dong)(dong)(dong)出(chu)(chu)鉛(qian)(qian)芯(xin)。旋(xuan)(xuan)轉式靠(kao)旋(xuan)(xuan)轉輸(shu)(shu)送鉛(qian)(qian)芯(xin)。脈動(dong)(dong)(dong)(dong)式（撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式）靠(kao)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)輸(shu)(shu)送鉛(qian)(qian)芯(xin)，結構有(you)一次(ci)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，即(ji)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)一次(ci)出(chu)(chu)鉛(qian)(qian)芯(xin)。二次(ci)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，第一次(ci)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)筆嘴(zui)伸出(chu)(chu)筆桿(gan)，第二次(ci)撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)鉛(qian)(qian)芯(xin)伸出(chu)(chu)。雙卡(ka)頭撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)式，采用雙卡(ka)頭結構，縮(suo)短了卡(ka)頭和筆嘴(zui)端部距(ju)離，使活動(dong)(dong)(dong)(dong)鉛(qian)(qian)筆內最后剩下(xia)的8～15mm的一段(duan)殘留(liu)鉛(qian)(qian)芯(xin)，不用撳(qin)(qin)(qin)動(dong)(dong)(dong)(dong)可(ke)出(chu)(chu)一支整(zheng)鉛(qian)(qian)芯(xin)將其頂出(chu)(chu)，即(ji)可(ke)連續(xu)書寫(xie)(xie)。自(zi)動(dong)(dong)(dong)(dong)補償式（自(zi)動(dong)(dong)(dong)(dong)出(chu)(chu)芯(xin)）無須旋(xuan)(xuan)轉或脈動(dong)(dong)(dong)(dong)裝置，可(ke)自(zi)動(dong)(dong)(dong)(dong)補償鉛(qian)(qian)芯(xin)，連續(xu)書寫(xie)(xie)。

脈(mo)動(dong)(dong)式機(ji)芯(xin)(xin)(xin)(xin)結構(gou)是活(huo)動(dong)(dong)鉛(qian)筆(bi)普遍采用的基本結構(gou)形(xing)式，主要(yao)由(you)筆(bi)桿、尖(jian)套（筆(bi)尖(jian)）、固定(ding)護芯(xin)(xin)(xin)(xin)管（活(huo)動(dong)(dong)阻尼(ni)）、卡頭（開(kai)花）、鎖緊箍、彈簧(huang)等組成。當儲(chu)芯(xin)(xin)(xin)(xin)管受撳(qin)(qin)動(dong)(dong)壓力（手指壓力）作(zuo)用時(shi)，克服彈簧(huang)的彈性力向下移動(dong)(dong)，并使卡頭爪片張開(kai)，同時(shi)鉛(qian)芯(xin)(xin)(xin)(xin)依靠自身的重(zhong)力，離開(kai)在儲(chu)芯(xin)(xin)(xin)(xin)管內的原來位置，在制動(dong)(dong)元件阻尼(ni)圈的控制下沿著護芯(xin)(xin)(xin)(xin)管壁移動(dong)(dong)一定(ding)長度。撳(qin)(qin)動(dong)(dong)壓力釋放后，彈簧(huang)恢(hui)復原位，鉛(qian)芯(xin)(xin)(xin)(xin)被鎖緊箍和卡頭自動(dong)(dong)鎖緊定(ding)位，完成一次脈(mo)動(dong)(dong)出芯(xin)(xin)(xin)(xin)過程。依此(ci)往復即可連續脈(mo)動(dong)(dong)出芯(xin)(xin)(xin)(xin)。