減速機的發展方向
國(guo)內(nei)減(jian)速(su)電(dian)機(ji)產(chan)品(pin)製(zhi)造(zao)商(shang)多(duo)為(wei)中(zhong)小(xiao)企(qi)業(ye),甚(shen)至(zhi)是(shi)微(wei)型(xing)企(qi)業(ye)。外(wai)形(xing)仿(fang)照(zhao)國(guo)外(wai)產(chan)品(pin),安(an)裝(zhuang)尺(chi)寸(cun)與(yu)國(guo)外(wai)產(chan)品(pin)相(xiang)同(tong),內(nei)部(bu)結(jie)構(gou)參(can)數(shu)自(zi)行(xing)設(she)計(ji),整(zheng)機(ji)性(xing)能(neng)參(can)差(cha)不(bu)齊(qi)。由(you)於(yu)跨(kua)國(guo)公(gong)司(si)的(de)技(ji)術(shu)標(biao)準(zhun),自(zi)成(cheng)體(ti)係(xi),仿(fang)照(zhao)來(lai)的(de)產(chan)品(pin)設(she)計(ji)則(ze)是(shi)五(wu)花(hua)八(ba)門(men)。這(zhe)就(jiu)要(yao)求(qiu)國(guo)內(nei)眾(zhong)多(duo)減(jian)速(su)電(dian)機(ji)製(zhi)造(zao)商(shang)提(ti)高(gao)核(he)心(xin)競(jing)爭(zheng)力(li),推(tui)行(xing)產(chan)品(pin)模(mo)塊(kuai)化(hua)設(she)計(ji)。對(dui)減(jian)速(su)電(dian)機(ji)產(chan)品(pin)模(mo)塊(kuai)化(hua)設(she)計(ji)提(ti)出(chu)以(yi)下(xia)建(jian)議(yi):
(1)jianchizhixingyuguojitongbudejishubiaozhun。youyuduonianlaifangzhaoshejideshijian,guoneideshejirenyuanyijibenxingchengyuedingsuchengdejishubiaozhun。ruxiangtiyonggaoqiangduzhujianjimushizuhesheji,shukongjiagongzhongxintangkong;齒輪用優質合金鋼鍛件,切齒後滲碳淬火磨齒,精度達ISO1328的6級(圓柱齒輪)或AGMA390.03的10級(圓錐齒輪);出軸用優質合金鋼鍛件,調質和車削後磨削;滾動軸承選用優質品牌;緊固件選用高強度級的;電機采用符合IEC標準的優質高效率電機等。
(2)優you化hua本ben企qi業ye產chan品pin的de模mo塊kuai化hua設she計ji。絕jue大da多duo數shu減jian速su機ji原yuan設she計ji部bu門men配pei備bei了le有you經jing驗yan的de設she計ji技ji術shu人ren員yuan,積ji累lei了le大da量liang的de減jian速su電dian機ji產chan品pin圖tu紙zhi。為wei進jin行xing模mo塊kuai化hua設she計ji,有you必bi要yao作zuo全quan麵mian的de整zheng理li、修改和優化,如箱體各軸承孔間的中心距標準化,需形成接近優先數(R5、R10、R20、R40等)的係列,盡量減少中心距的規格數;各式齒輪應盡量合並為統一的圖紙;減速機模塊和電機模塊間的接口應形成規範,接口參數應標準化,形成一個按標準公比或混合公比的序列。
(3)打破壁壘,在更大的範圍內推行模塊接盡量不打折彎。由於易氧化,鋁線的接頭焊接和防護成了焦點。較成熟的有以下4種。
(a)刺破型的壓接
已經開發出了大壓力的刺破型壓接端子來解決傳導和氧化問題。這種連接方式隻能在φ1.0mm以(yi)上(shang)鋁(lv)線(xian)電(dian)機(ji)上(shang)使(shi)用(yong),實(shi)際(ji)上(shang)壽(shou)命(ming)還(hai)是(shi)比(bi)銅(tong)線(xian)要(yao)短(duan)。另(ling)外(wai),銅(tong)鋁(lv)分(fen)子(zi)活(huo)潑(po)性(xing)不(bu)同(tong),電(dian)位(wei)相(xiang)差(cha)大(da)。在(zai)通(tong)電(dian)過(guo)程(cheng)中(zhong),肯(ken)定(ding)會(hui)逐(zhu)漸(jian)產(chan)生(sheng)電(dian)位(wei)腐(fu)蝕(shi),所(suo)以(yi)連(lian)接(jie)點(dian)電(dian)阻(zu)會(hui)逐(zhu)漸(jian)變(bian)大(da),溫(wen)升(sheng)變(bian)高(gao),嚴(yan)重(zhong)時(shi)不(bu)通(tong)電(dian),這(zhe)就(jiu)要(yao)求(qiu)電(dian)機(ji)設(she)計(ji)鋁(lv)線(xian)溫(wen)升(sheng)不(bu)能(neng)使(shi)用(yong)到(dao)F級以上。鋁線與銅引線接觸長度和麵積要比傳統單純銅線大些,保證在5mm以上。
(b)刮漆皮+銅引線鉚接
shiyongtuoqijixiaolvgao,danyouyushangxiagangsishualungaosumoca,tuoqihoudelvxianyifangmianxianjingsunshang,lingyifangmianlvxianbiaomianyibianheiyiyanghuananshangxi,suoyishengchanshiyaokongzhihaocainengmibu。duanzimaojiehouhaiyaotaoshangresuoguan,gejuekongqi,fangzhiyanghua。genjucaiyongzhezhonggongyidechangjiatongji,faxianlvxiandianjizongheshixiaolvzai4‰左右,而由於鋁線連接原因的占近一半。
(c)刮漆皮+銅引線鉚接後鍍錫
采用脫漆機去漆皮,與銅引線在銅帶機鉚接一次後,用沾鋁焊劑鋁焊條在浸錫爐上浸錫,套一熱縮管熱縮即可。浸錫爐上浸錫的優點是:比(bi)電(dian)烙(lao)鐵(tie)的(de)溫(wen)度(du)高(gao)且(qie)均(jun)勻(yun)穩(wen)定(ding),焊(han)錫(xi)均(jun)勻(yun)滲(shen)透(tou)性(xing)強(qiang)。另(ling)外(wai),鋁(lv)助(zhu)焊(han)劑(ji)成(cheng)分(fen)多(duo)易(yi)炭(tan)化(hua),在(zai)錫(xi)爐(lu)中(zhong)析(xi)出(chu),不(bu)會(hui)在(zai)焊(han)點(dian)處(chu)殘(can)留(liu)。此(ci)種(zhong)工(gong)藝(yi)統(tong)計(ji)結(jie)果(guo),鋁(lv)線(xian)電(dian)機(ji)綜(zong)合(he)失(shi)效(xiao)率(lv)在(zai)3‰zuoyou,bufenshixiaoyuanyinshimaojiehejinxihouduanxianshixiao。houcaiyongzhijiechanraocuoshi,qiezhuyichanraoquanfangjianxi,shijinxihoufangzhiduihanhekuodajiechumianji。caiqucixiangcuoshihoutongjibiaoming,lvxiandianjishixiaolvyouxiajiangle1‰左右。
(d)去漆皮+銅引線後浸錫再封膠
去漆皮工藝采用的是漆包線專用的脫漆粉,在不鏽鋼爐中將其溶化,鋁線接頭處浸在溶液中,大概2s~3sjiuketuoqi,yongshibukaiganjing,quqihoujiganjingyoubushangxian,yemeijinhoudefushizhiyou。jietongyinxianshizhijiechanraohouyongzhanlvhanjilvhantiaozaijinxiluzhongjinxi,zaiyonggaoshousuobidedaijiaoshuangcengresuoguan,limiancengyouguijiao,wanquandujueyanghuadewenti。jutongji:采用此焊接工藝,鋁線電機綜合失效率在1‰左右,此工藝是最合理可靠的,值得推廣。
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