Kunyamula MpiraKulekerera Kufotokozedwa

Kodi mukumvetsa kulolerana ndi zomwe zikutanthauza?Ngati sichoncho, simuli nokha.Izi nthawi zambiri zimatchulidwa koma nthawi zambiri popanda kumvetsetsa kwenikweni zomwe akutanthauza.Mawebusayiti omwe ali ndi mafotokozedwe osavuta a kulekerera ndi osowa kwambiri kotero tinaganiza zodzaza kusiyana.Ndiye, ngati mukufuna kudziwa zomwe "Mean Bore Deviation" ndi "Single Bore Variation" akutanthauza chiyani?Werengani pamene tikuyembekeza kufotokoza izi momveka bwino.

Kupatuka

Izi zikutanthauza kuti kutali bwanji ndi gawo lodziwika bwino, muyeso weniweniwo umaloledwa kukhala.Kukula mwadzina ndi komwe kukuwonetsedwa m'kabukhu la opanga mwachitsanzo 6200 ili ndi 10mm, 688 ili ndi 8mm ndi zina zotero.Popanda miyezo yapadziko lonse lapansi yololera pama bearings (ISO ndi AFBMA), zitha kukhala kwa wopanga aliyense payekha.Izi zitha kutanthauza kuti mumayitanitsa 688 yonyamula (8mm bore) kuti mupeze kuti ndi 7mm yoboola ndipo siyingafanane ndi shaft.Kulekerera kwapatuko nthawi zambiri kumapangitsa kuti bore kapena OD ikhale yaying'ono koma osati yayikulu kuposa gawo lodziwika bwino.

Kutanthauza Kupatuka kwa Bore/OD

... kapena ndege imodzi imatanthauza kupatuka m'mimba mwake.Uku ndi kulolerana kofunikira poyang'ana kuti mugwirizane kwambiri ndi mphete yamkati ndi shaft kapena mphete yakunja ndi nyumba.Choyamba muyenera kumvetsetsa kuti kubereka si kozungulira.Zachidziwikire sikuli kutali koma mukayamba kuyeza mu ma microns (masauzande a millimeter) mumazindikira kuti miyeso imasiyanasiyana.Tiyeni titenge mtunda wa 688 (8 x 16 x 5mm) monga chitsanzo.Kutengera komwe mu mphete yamkati mumayesa, mutha kuwerenga kulikonse, tinene, pakati pa 8mm ndi 7.991 mm ndiye mumatenga chiyani ngati kukula kwake?Apa ndipamene Kupatuka Kumatanthauza kumabwera. Izi zikuphatikizapo kutenga miyeso ingapo mu ndege imodzi yozungulira (tidzafika pamenepo mu mphindi imodzi) kudutsa bore kapena OD kuti muyese kukula kwa mpheteyo.

Chojambulachi chikuyimira mphete yamkati.Miviyo imayimira miyeso yosiyanasiyana yomwe imatengedwa kudutsa borelo mbali zosiyanasiyana kuti zithandizire kuzindikira kukula kwake.Miyezo iyi yatengedwa molondola mu ndege imodzi yozungulira mwachitsanzo, pamalo omwewo motsatira kutalika kwa bowo.Miyezo iyeneranso kutengedwa mumitundu yosiyanasiyana ya ma radial kuti muwonetsetse kuti bore ili mkati mwa kulolerana ndi kutalika kwake.Zomwezo zimagwiranso ntchito pamiyeso ya mphete yakunja.

Chithunzichi chikuwonetsa momwe OSATI kuchitira.Muyeso uliwonse watengedwa pa malo osiyana ndi kutalika kwa mphete yonyamula, mwa kuyankhula kwina, muyeso uliwonse watengedwa mu ndege yosiyana.

Mwachidule, kukula kwa bore kumawerengedwa motere:

Izi ndizothandiza kwambiri powerengera kulekerera kwa shaft kuposa muyeso umodzi womwe ungakhale wosocheretsa.

Tinene kuti kulolerana kwapang'onopang'ono kwa P0 ndi +0/-8 microns.Izi zikutanthauza kuti kubereka kwapakati kungakhale pakati pa 7.992mm ndi 8.000mm.Mfundo yomweyi imagwiranso ntchito ku mphete yakunja.

M'lifupi Kupatuka

… kapena kupatuka kwa m'lifupi mwa mphete imodzi yamkati kapena yakunja kuchoka ku dimensional mwadzina.Palibe zambiri zomwe zimafunikira pano.Monga momwe zimakhalira ndi kukula kwa OD, m'lifupi mwake kuyenera kuwongoleredwa mkati mwa kulolerana kwina.Popeza m'lifupi nthawi zambiri sizovuta kwambiri, kulolerana kumakhala kokulirapo kuposa kunyamula kapena OD.Kupatuka kwakukuru kwa +0/-120 zikutanthauza kuti ngati muyeza m'lifupi mphete yamkati kapena yakunja pamalo aliwonse mozungulira, tinene, 688 (4mm m'lifupi), sikuyenera kukhala yotakata kuposa 4mm (mulingo womwewo) kapena kuchepera kuposa 3.880mm.

Kusintha

Kulekerera kosiyanasiyana kumatsimikizira kuzungulira.Mu chithunzithunzi ichi choyipa kwambiri -za-kuzungulira 688 mphete yamkati, muyeso waukulu kwambiri ndi 9.000mm ndi wocheperako 7.000mm.Ngati titawerengera kukula kwake (9.000 + 7.000 ÷ 2) timabwera ndi 8.000mm.Tili mkati mwa kulekerera kwapatuka kokwanira koma kutengerako sikungakhale kosagwiritsidwa ntchito kotero kuti mukuwona kuti kupatuka ndi kusiyanasiyana kungakhale kopanda phindu popanda wina ndi mnzake.

Kusiyana Kwa Bore / OD Kumodzi

...Yang'anani pa chithunzi chakumanzere komwe miyeso ya bore ili pakati pa 8.000mm ndi 7.996mm.Kusiyana kwakukulu ndi kakang'ono kwambiri ndi 0.004mm, choncho, kusiyana kwapakati pa ndege imodziyi, ndi 0.004mm kapena 4 microns.

Kutanthauza Kusiyanasiyana kwa Bore/OD Diameter

Chabwino, chifukwa cha kusokoneza / OD kupatukana ndi kubereka kamodzi / OD kusiyana, ndife okondwa kuti kubereka kwathu kuli pafupi kwambiri ndi kukula koyenera ndipo ndi kozungulira mokwanira koma bwanji ngati pali taper yochuluka pa bore kapena OD monga momwe chithunzi chakumanja (inde, ndichokokomeza kwambiri!).Ichi ndichifukwa chake tilinso ndi malire osiyanitsidwa ndi OD.

Kuti tipeze kusiyana kwakukulu kapena kusiyanasiyana kwa OD, timalemba tanthauzo la bore kapena OD mu ma radial osiyanasiyana ndikuwona kusiyana pakati pa zazikulu ndi zazing'ono kwambiri.Tangoganizani kuti kumanzere apa, miyeso yapamwamba imapereka kukula kwa 7.999mm, pakati ndi 7.997mm ndipo pansi ndi 7.994mm.Chotsani chaching'ono kwambiri kuchokera ku chachikulu (7.999 -7.994) ndipo zotsatira zake ndi 0.005mm.Kusiyanasiyana kwathu kwapakati ndi ma microns 5.

M'lifupi Kusiyana

Apanso, zowongoka kwambiri.Tiyeni tiyerekeze, pamtundu wina, kusiyanasiyana kololedwa ndi 15 microns.Mukayeza m'lifupi mwa mphete yamkati kapena yakunja pamalo osiyanasiyana, muyeso wawukulu suyenera kupitilira ma microns 15 kuposa muyeso wocheperako.

Radial Runout

…kusonkhanitsidwa kukhala ndi mphete zamkati/zakunja ndi gawo linanso lofunikira pakupirira kulolerana.Tiyerekeze kuti kupatuka kwa mphete yamkati ndi mphete yakunja kuli m'malire ndipo kuzungulira kuli mkati mwa kusiyana kololedwa, ndithudi ndizo zonse zomwe tiyenera kudandaula nazo?Yang'anani chithunzi ichi cha mphete yamkati.Kupatuka koboola kuli bwino komanso kusiyanasiyana kosiyana koma onani momwe m'lifupi mwa mphete zimasiyanasiyana.Monga china chilichonse, kufalikira kwa mphete sikufanana ndendende pamalo aliwonse ozungulira, koma kulolerana kwa ma radial runout kumatengera kuchuluka kwa izi.

Kutha kwa mphete yamkati

… imayesedwa poyeza mfundo zonse pabwalo limodzi la mphete yamkati panthawi imodzi yozungulira pomwe mphete yakunja imakhala yoyima ndikuchotsa muyeso waung'ono kwambiri kuchokera pa waukulu kwambiri.Ma radial runout awa omwe amaperekedwa m'matebulo olekerera akuwonetsa kusiyana kwakukulu komwe kumaloledwa.Kusiyana kwa makulidwe a mphete apa ndikokokomeza kufotokoza mfundoyo momveka bwino.

Kutha kwa mphete yakunja

imayesedwa poyeza mfundo zonse pabwalo limodzi la mphete yakunja panthawi imodzi pamene mphete yamkati imakhala yoyima ndikuchotsa muyeso waung'ono kwambiri kuchokera pa waukulu kwambiri.

Nkhope Yothamanga / Bore

Kulekerera uku kumapangitsa kuti mphete yamkati yamkati ikhale pafupi kwambiri ndi ngodya yoyenera ndi nkhope ya mphete yamkati.Ziwerengero za kulolerana kwa kutha kwa nkhope / kubereka zimangoperekedwa kwa magiredi olondola a P5 ndi P4.Mfundo zonse pabwalo limodzi la mphete yamkati yomwe inabowoleredwa pafupi ndi nkhope amayezedwa panthawi imodzi pomwe mphete yakunja imayima.Kubereka kumatembenuzidwa ndipo mbali ina ya bowo imafufuzidwa.Chotsani muyeso waukulu kwambiri kuchoka pa chaching'ono kwambiri kuti muzitha kupirira nkhope.

Kuthamanga kwa nkhope / OD

…Kulekerera uku kumapangitsa kuti mphete yakunja ikhale pafupi ndi ngodya yoyenera ndi nkhope ya mphete yakunja.Ziwerengero zololera za kutha kwa nkhope / OD zimaperekedwa pamagiredi olondola a P5 ndi P4.Mfundo zonse pabwalo limodzi la mphete yakunja yobowoleredwa pafupi ndi nkhope zimayezedwa panthawi imodzi pomwe mphete yamkati imayima.Kubereka kumatembenuzidwa ndipo mbali ina ya mphete yakunja imafufuzidwa.Tengani muyeso waukulu kwambiri kuchoka paung'ono kwambiri kuti muzitha kupirira nkhope / OD.

Face Runout/Raceway ndi ofanana kwambiri koma, m'malo mwake, yerekezerani kutengera kwamkati kapena kunja kwa mphete yamkati ndi nkhope ya mphete yamkati kapena yakunja.