自動鉛筆的構造是什么
1、筆桿部分
筆桿是由塑料構造,用壓塑機壓成(cheng),用黃白(bai)油進行加工處理(li),是筆桿更加光亮,它(ta)分為上(shang)下部分,通過(guo)上(shang)下套金木的關(guan)系,旋(xuan)轉(zhuan)管子達到(dao)伸(shen)縮(suo)的目的。
2、筆芯部分
三肩胛頭(tou)上有(you)(you)螺(luo)絲,中間(jian)比較大,其實用銅棒(bang)在車(che)(che)床(chuang)(chuang)上制成(cheng),后(hou)(hou)端(duan)更大,作用是(shi)(shi)(shi)拽(zhuai)住壁板不是(shi)(shi)(shi)內部結構(gou)搖(yao)(yao)動(dong)。大小(xiao)(xiao)管子與長管子是(shi)(shi)(shi)用鐵(tie)(tie)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(tie)(tie)絲用沖(chong)(chong)床(chuang)(chuang)沖(chong)(chong)制而成(cheng),然后(hou)(hou)再(zai)鍍銅,以(yi)免生(sheng)銹(xiu)而影響(xiang)質(zhi)量。彌(mi)簧(huang)是(shi)(shi)(shi)用鐵(tie)(tie)皮(pi)裁成(cheng)條子,縫光兩邊(bian),以(yi)搖(yao)(yao)轉方法搖(yao)(yao)成(cheng)螺(luo)旋形彈(dan)簧(huang),然后(hou)(hou)按需(xu)要長度裁斷,再(zai)經切角(jiao)、踏圓(yuan)(yuan)、沖(chong)(chong)珠(zhu)頭(tou),最后(hou)(hou)鍍鎳以(yi)防(fang)生(sheng)銹(xiu)。彌(mi)簧(huang)管子是(shi)(shi)(shi)用生(sheng)銅棒(bang)制成(cheng),整修光潔,跣成(cheng)凹口,以(yi)便(bian)與彈(dan)簧(huang)配合(he)。小(xiao)(xiao)華司為一中間(jian)有(you)(you)孔小(xiao)(xiao)圓(yuan)(yuan)片,是(shi)(shi)(shi)用生(sheng)銅棒(bang)車(che)(che)成(cheng)。鋅皮(pi)盤(pan)是(shi)(shi)(shi)用鋅皮(pi)沖(chong)(chong)制而成(cheng)。為鉛芯的儲藏機構(gou)。
3、另件部分
筆(bi)(bi)夾,筆(bi)(bi)夾、內圈、外圈、筆(bi)(bi)夾羅絲、頭(tou)子(zi)這些(xie)零件是自動鉛(qian)筆(bi)(bi)的常見配件,不同的配件有不同的作用(yong),例如頭(tou)子(zi)是用(yong)生銅棒束成(cheng),能保(bao)護三肩胛(jia)送出鉛(qian)芯。
活動鉛筆的工作原理介紹
墜芯(xin)(xin)式靠鉛(qian)(qian)芯(xin)(xin)重力自(zi)(zi)動(dong)出(chu)鉛(qian)(qian)芯(xin)(xin)。旋(xuan)轉(zhuan)式靠旋(xuan)轉(zhuan)輸(shu)送鉛(qian)(qian)芯(xin)(xin)。脈(mo)動(dong)式(撳(qin)動(dong)式)靠撳(qin)動(dong)輸(shu)送鉛(qian)(qian)芯(xin)(xin),結(jie)構有一(yi)次撳(qin)動(dong)式,即撳(qin)動(dong)一(yi)次出(chu)鉛(qian)(qian)芯(xin)(xin)。二次撳(qin)動(dong)式,第(di)一(yi)次撳(qin)動(dong)筆(bi)嘴(zui)伸出(chu)筆(bi)桿,第(di)二次撳(qin)動(dong)鉛(qian)(qian)芯(xin)(xin)伸出(chu)。雙(shuang)卡(ka)(ka)頭撳(qin)動(dong)式,采用雙(shuang)卡(ka)(ka)頭結(jie)構,縮短了卡(ka)(ka)頭和筆(bi)嘴(zui)端部距離,使活(huo)動(dong)鉛(qian)(qian)筆(bi)內最(zui)后(hou)剩下的8~15mm的一(yi)段殘留鉛(qian)(qian)芯(xin)(xin),不(bu)用撳(qin)動(dong)可出(chu)一(yi)支整鉛(qian)(qian)芯(xin)(xin)將其(qi)頂出(chu),即可連(lian)續(xu)書(shu)寫。自(zi)(zi)動(dong)補償式(自(zi)(zi)動(dong)出(chu)芯(xin)(xin))無(wu)須旋(xuan)轉(zhuan)或脈(mo)動(dong)裝置,可自(zi)(zi)動(dong)補償鉛(qian)(qian)芯(xin)(xin),連(lian)續(xu)書(shu)寫。
脈動(dong)(dong)(dong)式機芯結(jie)構是(shi)活(huo)動(dong)(dong)(dong)鉛筆普遍采(cai)用的基本結(jie)構形式,主要由(you)筆桿(gan)、尖套(筆尖)、固定(ding)護芯管(活(huo)動(dong)(dong)(dong)阻(zu)尼)、卡頭(tou)(開(kai)花)、鎖緊箍、彈(dan)簧等(deng)組成(cheng)。當儲芯管受撳動(dong)(dong)(dong)壓力(li)(手指壓力(li))作(zuo)用時(shi),克服(fu)彈(dan)簧的彈(dan)性力(li)向下(xia)(xia)移動(dong)(dong)(dong),并(bing)使卡頭(tou)爪片(pian)張開(kai),同(tong)時(shi)鉛芯依靠自身的重力(li),離開(kai)在儲芯管內(nei)的原來位置,在制動(dong)(dong)(dong)元件阻(zu)尼圈的控制下(xia)(xia)沿(yan)著護芯管壁移動(dong)(dong)(dong)一(yi)定(ding)長度。撳動(dong)(dong)(dong)壓力(li)釋放(fang)后,彈(dan)簧恢復原位,鉛芯被鎖緊箍和卡頭(tou)自動(dong)(dong)(dong)鎖緊定(ding)位,完成(cheng)一(yi)次(ci)脈動(dong)(dong)(dong)出芯過程。依此往復即可連續脈動(dong)(dong)(dong)出芯。
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