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摘(zhai) 要 :裝入試驗瓶(ping),并(bing)保(bao)持平(ping)衡,如是雙功能(neng)機型,設定(ding)(ding)(ding)振蕩方式。接通電(dian)源,根(gen)據變頻搖(yao)床(chuang)表面刻(ke)度(du)(du)(du)設定(ding)(ding)(ding)定(ding)(ding)(ding)時(shi)時(shi)間,如需長(chang)時(shi)間工(gong)作,將定(ding)(ding)(ding)時(shi)器(qi)調至常(chang)開位置,打開電(dian)源開關,設定(ding)(ding)(ding)恒溫(wen)(wen)溫(wen)(wen)度(du)(du)(du),將控制(zhi)小開關置于“設定(ding)(ding)(ding)"段(duan),此時(shi)顯(xian)示屏顯(xian)示的溫(wen)(wen)度(du)(du)(du)為設定(ding)(ding)(ding)的溫(wen)(wen)度(du)(du)(du),調節旋鈕(niu),設置到(dao)您工(gong)作所(suo)需溫(wen)(wen)度(du)(du)(du)即可。設定(ding)(ding)(ding)變頻搖(yao)床(chuang)的工(gong)作
2020-12-20 -
摘 要 :電(dian)(dian)熱數顯(xian)恒溫水浴(yu)(yu)鍋適用于電(dian)(dian)力(li)電(dian)(dian)網、自動化控制(zhi)系統中對電(dian)(dian)流電(dian)(dian)參(can)量(liang)的測量(liang)和顯(xian)示,具有(you)精度高、穩定性(xing)好、抗振(zhen)動等優點,可直接(jie)替代原有(you)指針式儀表。長(chang)時(shi)(shi)間存(cun)放未(wei)使用時(shi)(shi),請(qing)每三個月通電(dian)(dian)一次不少于4小時(shi)(shi),長(chang)期(qi)保(bao)存(cun)應(ying)避開直射光線,宜存(cun)放在環境溫度-25至55度,如電(dian)(dian)熱數顯(xian)恒溫水浴(yu)(yu)鍋無顯(xian)示,應(ying)先檢(jian)
2020-12-20 -
摘(zhai) 要 :當鉑電(dian)(dian)阻(zu)(zu)(zu)與預定溫度(du)電(dian)(dian)阻(zu)(zu)(zu)不(bu)等時,電(dian)(dian)橋(qiao)不(bu)平(ping)衡,輸出一(yi)個(ge)誤差訊號,經交流(liu)(liu)放大器(qi)放大后(hou)相(xiang)敏(min)整(zheng)流(liu)(liu)。整(zheng)流(liu)(liu)后(hou)的(de)直流(liu)(liu)電(dian)(dian)平(ping)控(kong)制一(yi)個(ge)單結管構成的(de)振(zhen)蕩器(qi),振(zhen)蕩脈沖(chong)控(kong)制可控(kong)硅(gui)的(de)導(dao)通角,再通過電(dian)(dian)熱數顯恒(heng)溫水浴鍋(guo),zui后(hou)使鉑電(dian)(dian)阻(zu)(zu)(zu)的(de)阻(zu)(zu)(zu)值與“預定溫度(du)”電(dian)(dian)阻(zu)(zu)(zu)的(de)阻(zu)(zu)(zu)值相(xiang)等,誤差訊號為零,可控(kong)硅(gui)不(bu)導(dao)通,溫度(du)保(bao)持(chi)恒(heng)定。
2020-12-20 -
摘 要 :變頻搖床(chuang)的(de)往復(fu)運(yun)動(dong)(dong)(dong)是(shi)通(tong)過曲(qu)柄連桿(gan)式傳(chuan)動(dong)(dong)(dong)機構來實現的(de),電動(dong)(dong)(dong)機通(tong)過皮帶傳(chuan)動(dong)(dong)(dong)使大皮帶輪(lun)帶動(dong)(dong)(dong)曲(qu)軸旋轉搖桿(gan)隨(sui)之作上(shang)、下 運(yun)動(dong)(dong)(dong),搖桿(gan)向(xiang)(xiang)(xiang)下運(yun)動(dong)(dong)(dong)時,肘板推(tui)動(dong)(dong)(dong)后(hou)軸和(he)往復(fu)桿(gan)向(xiang)(xiang)(xiang)后(hou)移動(dong)(dong)(dong),彈簧(huang)受到壓縮(suo)床(chuang)面是(shi)通(tong)過聯動(dong)(dong)(dong)座和(he)往復(fu)桿(gan)相連的(de),所以此(ci)時亦使床(chuang)面作后(hou)退運(yun)動(dong)(dong)(dong),當(dang)搖桿(gan)向(xiang)(xiang)(xiang)上(shang)運(yun)動(dong)(dong)(dong)時,由于(yu)受到彈簧(huang)的(de)伸張力推(tui)動(dong)(dong)(dong),床(chuang)
2020-12-20 -
摘(zhai) 要 :雙節時間(jian)、溫(wen)(wen)度(du)設置,自動故(gu)障(zhang)檢(jian)測及蜂(feng)鳴器(qi)報警功(gong)能,產品設計緊(jin)湊而(er)嚴密,占用(yong)的(de)(de)(de)空間(jian)范圍小(xiao),帶來更(geng)(geng)多的(de)(de)(de)自由和(he)方便(bian),方便(bian)的(de)(de)(de)溫(wen)(wen)度(du)偏差校準功(gong)能,更(geng)(geng)多的(de)(de)(de)滿足使用(yong)要求,內置超溫(wen)(wen)保護裝置;使用(yong)更(geng)(geng)安(an)全可靠,延(yan)長機器(qi)使用(yong)壽(shou)命,采(cai)用(yong)金屬模(mo)塊(kuai),溫(wen)(wen)度(du)均勻(yun)性高,便(bian)捷(jie)的(de)(de)(de)模(mo)塊(kuai)更(geng)(geng)換,便(bian)于清潔與消毒食用(yong)各種(zhong)試管,儀
2020-12-20 -
摘(zhai) 要 :擺(bai)(bai)(bai)(bai)(bai)輪(lun)(lun)是(shi)(shi)一(yi)個機械(xie)零件的(de)名稱(cheng)。由會來(lai)回擺(bai)(bai)(bai)(bai)(bai)動的(de)有軸臂(bei)的(de)輪(lun)(lun)組成,內有螺旋狀游(you)絲。 擺(bai)(bai)(bai)(bai)(bai)輪(lun)(lun)運轉(zhuan)的(de)平(ping)均與(yu)否直接影(ying)響走時精確度(du),擺(bai)(bai)(bai)(bai)(bai)輪(lun)(lun)擺(bai)(bai)(bai)(bai)(bai)動是(shi)(shi)否平(ping)均除了決定于它(ta)的(de)質地是(shi)(shi)否均勻外(wai),還(huan)跟它(ta)的(de)真圓度(du)有關,而真圓度(du)與(yu)擺(bai)(bai)(bai)(bai)(bai)輪(lun)(lun)軸臂(bei)數目有關。我們常見的(de)有兩臂(bei),也有三臂(bei)的(de),四(si)臂(bei)的(de)。就是(shi)(shi)說(shuo),擺(bai)(bai)(bai)(bai)(bai)輪(lun)(lun)的(de)軸臂(bei)越多,它(ta)所圍成的(de)擺(bai)(bai)(bai)(bai)(bai)
2020-12-20 -
摘 要 :生產(chan)(chan)制造業的(de)(de)模(mo)(mo)具(ju)術語,即(ji)(ji):構(gou)成產(chan)(chan)品(pin)空間(jian)的(de)(de)零件(jian)稱為成型(xing)(xing)(xing)零件(jian)(即(ji)(ji)模(mo)(mo)具(ju)整(zheng)體),成型(xing)(xing)(xing)產(chan)(chan)品(pin)內(nei)表面(mian)的(de)(de)(模(mo)(mo)具(ju))零件(jian)稱為型(xing)(xing)(xing)芯(xin)(Core),又稱子(zi)模(mo)(mo)或后(hou)模(mo)(mo)。從產(chan)(chan)品(pin)模(mo)(mo)具(ju)外觀(guan)上看,凸起的(de)(de)部份即(ji)(ji)型(xing)(xing)(xing)芯(xin),下凹的(de)(de)部份為型(xing)(xing)(xing)腔(Cavity),型(xing)(xing)(xing)芯(xin)與型(xing)(xing)(xing)腔是成對出(chu)現的(de)(de),模(mo)(mo)具(ju)的(de)(de)型(xing)(xing)(xing)腔與型(xing)(xing)(xing)芯(xin)合模(mo)(mo),其形成的(de)(de)空間(jian)即(ji)(ji)為該模(mo)(mo)具(ju)產(chan)(chan)
2020-12-20 -
摘 要 :慢(man)走(zou)絲(si)(si),也(ye)叫低速走(zou)絲(si)(si),是利用連續移動的(de)細金(jin)屬(shu)絲(si)(si)(稱為電極(ji)絲(si)(si),一般為銅絲(si)(si))作電極(ji),對工(gong)件(jian)進(jin)行脈沖火花放(fang)電,產(chan)生(sheng)6000度(du)以上(shang)高(gao)溫,蝕(shi)除金(jin)屬(shu)、切(qie)割成工(gong)件(jian)的(de)一種數控(kong)加工(gong)機床。慢(man)走(zou)絲(si)(si)加工(gong)原理是在線電極(ji)與工(gong)件(jian)之間存在的(de)有縫(feng)間隙,持續放(fang)電去除金(jin)屬(shu)的(de)現象。
2020-12-20 -
摘 要 :1、齒(chi)(chi)輪(lun)(lun)(lun)(lun)是漸開線齒(chi)(chi)形,而(er)鏈(lian)輪(lun)(lun)(lun)(lun)是“三圓弧一直線”齒(chi)(chi)形。 2、齒(chi)(chi)輪(lun)(lun)(lun)(lun)是通過兩(liang)齒(chi)(chi)輪(lun)(lun)(lun)(lun)的輪(lun)(lun)(lun)(lun)齒(chi)(chi)相互(hu)嚙合實(shi)現傳(chuan)動,而(er)兩(liang)鏈(lian)輪(lun)(lun)(lun)(lun)間要通過鏈(lian)條實(shi)現傳(chuan)動。 3、齒(chi)(chi)輪(lun)(lun)(lun)(lun)可實(shi)現平行軸、任(ren)意交錯(cuo)軸間的傳(chuan)動,而(er)鏈(lian)輪(lun)(lun)(lun)(lun)只能實(shi)現平行軸間的傳(chuan)動。 4、齒(chi)(chi)輪(lun)(lun)(lun)(lun)比鏈(lian)輪(lun)(lun)(lun)(lun)傳(chuan)遞(di)的扭矩大。 5、齒(chi)(chi)輪(lun)(lun)(lun)(lun)加工精度、安(an)裝成本要高
2020-12-20 -
摘 要 :鏈(lian)輪(lun)(lun)和(he)鏈(lian)條(tiao)共同(tong)組成(cheng)了傳動(dong)結(jie)構,來自鏈(lian)條(tiao)和(he)鏈(lian)輔助振動(dong)的(de)工(gong)具驅動(dong)鏈(lian)輪(lun)(lun)和(he)鏈(lian)條(tiao)運動(dong)的(de)時(shi)候(hou)(hou),由于鏈(lian)輪(lun)(lun)多為圓(yuan)形(xing)的(de)鋸齒狀(zhuang),所以驅動(dong)鏈(lian)輪(lun)(lun)越(yue)大自行車騎(qi)行的(de)速(su)度就(jiu)(jiu)越(yue)快(kuai)就(jiu)(jiu)越(yue)省力(li),驅動(dong)鏈(lian)輪(lun)(lun)越(yue)小自行車的(de)騎(qi)行速(su)度就(jiu)(jiu)越(yue)慢越(yue)費力(li),所以鏈(lian)輪(lun)(lun)的(de)齒數越(yue)多,鏈(lian)條(tiao)適應其精度要求就(jiu)(jiu)越(yue)高(gao),所以當一(yi)些(xie)條(tiao)件不被滿足(zu)的(de)時(shi)候(hou)(hou),可能就(jiu)(jiu)
2020-12-20