一(yi)、結(jie)構(gou)原(yuan)理(li)：外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)“雙(shuang)模(mu)式(shi)” vs 直(zhi)筒(tong)型(xing)“緊(jin)湊(cou)型(xing)”

1. 外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)：單(shan)軸(zhou)實(shi)現(xian)雙(shuang)運(yun)動(dong)

外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)滾(gun)珠(zhu)花(hua)鍵(jian)通(tong)過(guo)在(zai)花(hua)鍵(jian)外(wai)筒(tong)外(wai)徑(jing)加(jia)裝(zhuang)專(zhuan)用(yong)軸(zhou)承(cheng)外(wai)套(tao)，使(shi)外(wai)筒(tong)可(ke)獨(du)立(li)旋(xuan)轉(zhuan)或(huo)停(ting)止(zhi)。其(qi)核(he)心(xin)結(jie)構(gou)包(bao)含(han)花(hua)鍵(jian)軸(zhou)、滾(gun)珠(zhu)及(ji)帶(dai)軸(zhou)承(cheng)外(wai)套(tao)的(di)外(wai)筒(tong)。當(dang)花(hua)鍵(jian)軸(zhou)旋(xuan)轉(zhuan)時(shi)，外(wai)筒(tong)可(ke)通(tong)過(guo)軸(zhou)承(cheng)外(wai)套(tao)實(shi)現(xian)同(tong)步(bu)旋(xuan)轉(zhuan)；當(dang)外(wai)筒(tong)受(shou)軸(zhou)向(xiang)力(li)時(shi)，滾(gun)珠(zhu)在(zai)溝(gou)槽(cao)內(nei)滾(gun)動(dong)引(yin)導(dao)直(zhi)線(xian)位(wei)移(yi)。例(li)如(ru)，TBI MOTION的(di)RLSF係(ji)列(lie)外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)滾(gun)珠(zhu)花(hua)鍵(jian)，螺(luo)母(mu)與(yu)軸(zhou)承(cheng)外(wai)套(tao)一(yi)體(ti)成(cheng)型(xing)，體(ti)積(ji)較(jiao)傳(zhuan)統(tong)結(jie)構(gou)縮(suo)小(xiao)30%，卻(que)能(neng)承(cheng)載(zai)50kN的(di)徑(jing)向(xiang)負(fu)載(zai)與(yu)20kN·m的(di)扭(niu)矩(ju)。

2. 直(zhi)筒(tong)型(xing)：空(kong)間(jian)利(li)用(yong)的(di)極(ji)致(zhi)

直(zhi)筒(tong)型(xing)滾(gun)珠(zhu)花(hua)鍵(jian)外(wai)筒(tong)為(wei)直(zhi)筒(tong)設(she)計(ji)，安(an)裝(zhuang)時(shi)通(tong)過(guo)鍵(jian)敲(qiao)入(ru)固(gu)定(ding)，適(kuo)用(yong)於(yu)空(kong)間(jian)受(shou)限(xian)場(chang)景(jing)。其(qi)結(jie)構(gou)包(bao)含(han)花(hua)鍵(jian)軸(zhou)、滾(gun)珠(zhu)及(ji)直(zhi)筒(tong)外(wai)筒(tong)，滾(gun)珠(zhu)在(zai)精(jing)密(mi)研(yan)磨(mo)的(di)40°哥(ge)德(de)式(shi)溝(gou)槽(cao)中(zhong)滾(gun)動(dong)，實(shi)現(xian)扭(niu)矩(ju)傳(zhuan)遞(di)與(yu)直(zhi)線(xian)運(yun)動(dong)。如(ru)UVT標(biao)準(zhun)型(xing)直(zhi)筒(tong)滾(gun)珠(zhu)花(hua)鍵(jian)，軸(zhou)徑(jing)6-50mm可(ke)選(xuan)，2排(pai)滾(gun)珠(zhu)設(she)計(ji)適(kuo)用(yong)於(yu)軸(zhou)徑(jing)6-20mm型(xing)號(hao)，4排(pai)滾(gun)珠(zhu)設(she)計(ji)則(ze)覆(fu)蓋(ge)25-50mm軸(zhou)徑(jing)，確(que)保(bao)高(gao)負(fu)載(zai)下(xia)的(di)穩(wen)定(ding)性(xing)。

二(er)、性(xing)能(neng)對(dui)比(bi)：外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)“高(gao)剛(gang)性(xing)” vs 直(zhi)筒(tong)型(xing)“靈(ling)敏(min)性(xing)”

1. 負(fu)載(zai)與(yu)剛(gang)性(xing)

外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)通(tong)過(guo)軸(zhou)承(cheng)外(wai)套(tao)分(fen)散(san)受(shou)力(li)，剛(gang)性(xing)提(ti)升(sheng)顯(xian)著(zhuo)。以(yi)NB外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)SPR型(xing)為(wei)例(li)，其(qi)交(jiao)叉(cha)滾(gun)柱(zhu)結(jie)構(gou)使(shi)剛(gang)性(xing)較(jiao)傳(zhuan)統(tong)設(she)計(ji)提(ti)高(gao)2倍(bei)，適(kuo)用(yong)於(yu)SCARA機(ji)器(qi)人(ren)縱(zong)軸(zhou)等(deng)高(gao)負(fu)載(zai)場(chang)景(jing)。直(zhi)筒(tong)型(xing)則(ze)通(tong)過(guo)40°接(jie)觸(chu)角(jue)設(she)計(ji)，在(zai)徑(jing)向(xiang)與(yu)扭(niu)矩(ju)方(fang)向(xiang)均(jun)具(ju)備(bei)高(gao)負(fu)荷(he)容(rong)量(liang)，如(ru)SLT係(ji)列(lie)直(zhi)筒(tong)滾(gun)珠(zhu)花(hua)鍵(jian)可(ke)承(cheng)受(shou)126kN動(dong)載(zai)荷(he)與(yu)237kN靜(jing)載(zai)荷(he)，滿(man)足(ju)重(chong)載(zai)設(she)備(bei)需(xu)求(qiu)。

2. 精(jing)度(duo)與(yu)間(jian)隙(xi)

兩(liang)者(zhe)均(jun)可(ke)通(tong)過(guo)預(yu)壓(ya)技(ji)術(zhu)實(shi)現(xian)“零(ling)間(jian)隙(xi)”定(ding)位(wei)。外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)如(ru)LTR型(xing)，通(tong)過(guo)6列(lie)滾(gun)珠(zhu)列(lie)與(yu)預(yu)壓(ya)調(diao)整(zheng)，將(qiang)旋(xuan)轉(zhuan)間(jian)隙(xi)控(kong)製(zhi)在(zai)±0.005mm以(yi)內(nei)，適(kuo)用(yong)於(yu)激(ji)光(guang)加(jia)工(gong)機(ji)等(deng)高(gao)精(jing)度(duo)場(chang)景(jing)。直(zhi)筒(tong)型(xing)則(ze)通(tong)過(guo)2-4排(pai)滾(gun)珠(zhu)列(lie)與(yu)預(yu)壓(ya)結(jie)合(ge)，實(shi)現(xian)同(tong)樣(yang)精(jing)度(duo)的(di)同(tong)時(shi)，裝(zhuang)配(pei)更(geng)簡(jian)便(pian)——即(ji)使(shi)外(wai)筒(tong)脫(tuo)離(li)，滾(gun)珠(zhu)也(ye)不(bu)會(kuai)脫(tuo)落(la)，降(xiang)低(di)維(wei)護(hu)成(cheng)本(ben)。

3. 速(su)度(duo)與(yu)噪(zao)音(yin)

外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)因(yin)軸(zhou)承(cheng)外(wai)套(tao)設(she)計(ji)，高(gao)速(su)旋(xuan)轉(zhuan)時(shi)穩(wen)定(ding)性(xing)更(geng)優(you)。如(ru)某(mou)品(pin)牌(pai)外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)滾(gun)珠(zhu)花(hua)鍵(jian)在(zai)12000rpm下(xia)，徑(jing)向(xiang)跳(tiao)動(dong)僅(jin)0.01mm，噪(zao)音(yin)低(di)於(yu)50dB。直(zhi)筒(tong)型(xing)則(ze)通(tong)過(guo)精(jing)密(mi)溝(gou)槽(cao)加(jia)工(gong)，在(zai)直(zhi)線(xian)運(yun)動(dong)中(zhong)實(shi)現(xian)0.1μm級(ji)定(ding)位(wei)，適(kuo)用(yong)於(yu)半(ban)導(dao)體(ti)設(she)備(bei)等(deng)微(wei)米(mi)級(ji)控(kong)製(zhi)場(chang)景(jing)。

三(san)、應(ying)用(yong)場(chang)景(jing)：外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)“機(ji)器(qi)人(ren)關(guan)節(jie)” vs 直(zhi)筒(tong)型(xing)“精(jing)密(mi)機(ji)床(chuang)”

1. 外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)：機(ji)器(qi)人(ren)與(yu)自(zi)動(dong)化(hua)設(she)備(bei)

外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)因(yin)結(jie)構(gou)緊(jin)湊(cou)、負(fu)載(zai)高(gao)，廣(guang)泛(fan)應(ying)用(yong)於(yu)機(ji)器(qi)人(ren)關(guan)節(jie)、自(zi)動(dong)裝(zhuang)載(zai)機(ji)及(ji)ATC裝(zhuang)置(zhi)。例(li)如(ru)，在(zai)六(liu)軸(zhou)機(ji)器(qi)人(ren)中(zhong)，其(qi)可(ke)同(tong)時(shi)傳(zhuan)遞(di)扭(niu)矩(ju)與(yu)軸(zhou)向(xiang)力(li)，實(shi)現(xian)±0.01°旋(xuan)轉(zhuan)精(jing)度(duo)與(yu)0.005mm重(chong)複(fu)定(ding)位(wei)精(jing)度(duo)，提(ti)升(sheng)作(zuo)業(ye)效(xiao)率(shuai)20%以(yi)上(shang)。

2. 直(zhi)筒(tong)型(xing)：精(jing)密(mi)加(jia)工(gong)與(yu)高(gao)速(su)運(yun)動(dong)

直(zhi)筒(tong)型(xing)憑(ping)借(jie)高(gao)靈(ling)敏(min)性(xing)與(yu)零(ling)間(jian)隙(xi)特(te)性(xing)，成(cheng)為(wei)數(shuo)控(kong)機(ji)床(chuang)、激(ji)光(guang)加(jia)工(gong)機(ji)的(di)首(shou)選(xuan)。在(zai)某(mou)汽(qi)車(ju)零(ling)部(bu)件(jian)加(jia)工(gong)線(xian)中(zhong)，直(zhi)筒(tong)型(xing)滾(gun)珠(zhu)花(hua)鍵(jian)使(shi)主(zhu)軸(zhou)旋(xuan)轉(zhuan)精(jing)度(duo)達(da)±0.002°，表(biao)麵(mian)粗(cu)糙(cao)度(duo)降(xiang)至(zhi)Ra0.4μm，同(tong)時(shi)將(qiang)維(wei)護(hu)周(zhou)期(qi)從(zong)3個(ge)月(yue)延(yan)長(zhang)至(zhi)1年(nian)。

結(jie)語(yu)：按(an)需(xu)選(xuan)擇(ze)，精(jing)準(zhun)匹(pi)配(pei)

外(wai)筒(tong)旋(xuan)轉(zhuan)式(shi)與(yu)直(zhi)筒(tong)型(xing)滾(gun)珠(zhu)花(hua)鍵(jian)各(ge)有(you)優(you)勢(shi)：前(qian)者(zhe)適(kuo)合(ge)高(gao)負(fu)載(zai)、雙(shuang)運(yun)動(dong)場(chang)景(jing)，後(hou)者(zhe)則(ze)以(yi)高(gao)精(jing)度(duo)、空(kong)間(jian)利(li)用(yong)率(shuai)見(xian)長(zhang)。隨(sui)著(zhuo)智(zhi)能(neng)製(zhi)造(zao)對(dui)傳(zhuan)動(dong)係(ji)統(tong)提(ti)出(chu)更(geng)高(gao)要(yao)求(qiu)，滾(gun)珠(zhu)花(hua)鍵(jian)正(zheng)朝(zhao)著(zhuo)小(xiao)型(xing)化(hua)（軸(zhou)徑(jing)3mm）、高(gao)速(su)化(hua)（DN值(zhi)15萬(mo)）方(fang)向(xiang)發(fa)展(zhan)。掌(zhang)握(wo)兩(liang)者(zhe)差(chai)異(yi)，是(shi)提(ti)升(sheng)設(she)備(bei)性(xing)能(neng)、降(xiang)低(di)維(wei)護(hu)成(cheng)本(ben)的(di)關(guan)鍵(jian)。