自動鉛筆的構造是什么
1、筆桿部分
筆桿是由塑(su)料(liao)構造,用(yong)壓塑(su)機壓成,用(yong)黃白油進行加工處理,是筆桿更加光亮(liang),它分為上(shang)下部分,通過(guo)上(shang)下套金木的關(guan)系,旋轉管子(zi)達(da)到伸(shen)縮的目(mu)的。
2、筆芯部分
三肩胛頭上有螺絲(si),中(zhong)間比較大,其實用(yong)銅(tong)(tong)棒在車(che)床(chuang)上制成(cheng),后(hou)端(duan)更大,作用(yong)是(shi)拽住壁(bi)板(ban)不是(shi)內部(bu)結構搖(yao)動。大小管子與長管子是(shi)用(yong)鐵皮及銅(tong)(tong)皮分別沖(chong)(chong)成(cheng)。小牙齒是(shi)以(yi)(yi)(yi)鐵絲(si)用(yong)沖(chong)(chong)床(chuang)沖(chong)(chong)制而成(cheng),然后(hou)再(zai)鍍(du)銅(tong)(tong),以(yi)(yi)(yi)免(mian)生銹(xiu)而影響質量。彌(mi)簧(huang)是(shi)用(yong)鐵皮裁成(cheng)條子,縫光(guang)兩邊,以(yi)(yi)(yi)搖(yao)轉(zhuan)方法搖(yao)成(cheng)螺旋形彈(dan)簧(huang),然后(hou)按需要長度裁斷,再(zai)經(jing)切角(jiao)、踏圓、沖(chong)(chong)珠(zhu)頭,最(zui)后(hou)鍍(du)鎳以(yi)(yi)(yi)防生銹(xiu)。彌(mi)簧(huang)管子是(shi)用(yong)生銅(tong)(tong)棒制成(cheng),整修光(guang)潔,跣成(cheng)凹口,以(yi)(yi)(yi)便與彈(dan)簧(huang)配合(he)。小華司為一(yi)中(zhong)間有孔小圓片,是(shi)用(yong)生銅(tong)(tong)棒車(che)成(cheng)。鋅(xin)皮盤是(shi)用(yong)鋅(xin)皮沖(chong)(chong)制而成(cheng)。為鉛芯(xin)的儲藏機構。
3、另件部分
筆(bi)(bi)夾(jia),筆(bi)(bi)夾(jia)、內圈(quan)、外(wai)圈(quan)、筆(bi)(bi)夾(jia)羅絲、頭子這些零件是自(zi)動鉛筆(bi)(bi)的常見配件,不同的配件有(you)不同的作用,例(li)如頭子是用生銅棒束成,能保(bao)護三肩胛(jia)送出鉛芯。
活動鉛筆的工作原理介紹
墜芯(xin)(xin)式(shi)靠(kao)(kao)鉛(qian)(qian)(qian)芯(xin)(xin)重力自(zi)(zi)動(dong)出鉛(qian)(qian)(qian)芯(xin)(xin)。旋轉式(shi)靠(kao)(kao)旋轉輸送(song)鉛(qian)(qian)(qian)芯(xin)(xin)。脈(mo)動(dong)式(shi)(撳(qin)(qin)(qin)(qin)動(dong)式(shi))靠(kao)(kao)撳(qin)(qin)(qin)(qin)動(dong)輸送(song)鉛(qian)(qian)(qian)芯(xin)(xin),結(jie)構有一次(ci)撳(qin)(qin)(qin)(qin)動(dong)式(shi),即撳(qin)(qin)(qin)(qin)動(dong)一次(ci)出鉛(qian)(qian)(qian)芯(xin)(xin)。二次(ci)撳(qin)(qin)(qin)(qin)動(dong)式(shi),第(di)一次(ci)撳(qin)(qin)(qin)(qin)動(dong)筆嘴(zui)伸出筆桿(gan),第(di)二次(ci)撳(qin)(qin)(qin)(qin)動(dong)鉛(qian)(qian)(qian)芯(xin)(xin)伸出。雙卡頭(tou)(tou)撳(qin)(qin)(qin)(qin)動(dong)式(shi),采用(yong)雙卡頭(tou)(tou)結(jie)構,縮短了卡頭(tou)(tou)和筆嘴(zui)端(duan)部距離,使活動(dong)鉛(qian)(qian)(qian)筆內最后剩下的(de)8~15mm的(de)一段殘留(liu)鉛(qian)(qian)(qian)芯(xin)(xin),不用(yong)撳(qin)(qin)(qin)(qin)動(dong)可出一支整鉛(qian)(qian)(qian)芯(xin)(xin)將其頂(ding)出,即可連續(xu)書(shu)寫(xie)。自(zi)(zi)動(dong)補償(chang)式(shi)(自(zi)(zi)動(dong)出芯(xin)(xin))無須旋轉或(huo)脈(mo)動(dong)裝置(zhi),可自(zi)(zi)動(dong)補償(chang)鉛(qian)(qian)(qian)芯(xin)(xin),連續(xu)書(shu)寫(xie)。
脈(mo)動(dong)(dong)式(shi)機芯(xin)(xin)(xin)(xin)結(jie)構(gou)是活動(dong)(dong)鉛筆(bi)普遍采(cai)用(yong)的基本(ben)結(jie)構(gou)形式(shi),主要由筆(bi)桿、尖套(筆(bi)尖)、固(gu)定(ding)護(hu)芯(xin)(xin)(xin)(xin)管(活動(dong)(dong)阻尼)、卡頭(tou)(開(kai)花)、鎖緊箍(gu)、彈簧(huang)等組成(cheng)。當儲(chu)(chu)芯(xin)(xin)(xin)(xin)管受撳(qin)動(dong)(dong)壓(ya)力(li)(li)(手指壓(ya)力(li)(li))作(zuo)用(yong)時,克服(fu)彈簧(huang)的彈性力(li)(li)向下移(yi)(yi)動(dong)(dong),并使卡頭(tou)爪片張開(kai),同時鉛芯(xin)(xin)(xin)(xin)依靠(kao)自身的重力(li)(li),離開(kai)在儲(chu)(chu)芯(xin)(xin)(xin)(xin)管內的原來位(wei)置,在制動(dong)(dong)元件阻尼圈的控制下沿著(zhu)護(hu)芯(xin)(xin)(xin)(xin)管壁移(yi)(yi)動(dong)(dong)一定(ding)長度。撳(qin)動(dong)(dong)壓(ya)力(li)(li)釋放后(hou),彈簧(huang)恢(hui)復(fu)原位(wei),鉛芯(xin)(xin)(xin)(xin)被鎖緊箍(gu)和卡頭(tou)自動(dong)(dong)鎖緊定(ding)位(wei),完成(cheng)一次脈(mo)動(dong)(dong)出芯(xin)(xin)(xin)(xin)過程。依此往(wang)復(fu)即可連續脈(mo)動(dong)(dong)出芯(xin)(xin)(xin)(xin)。
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