Abavelisi bebhola be-angular bayaqonda ukuba ukusebenza kwe-spindle ephezulu ye-CNC yezixhobo zomatshini wokusika isinyithi kuxhomekeke kwi-spindle kunye nokuthanjiswa kwayo kumlinganiselo omkhulu.Iibheringi zesixhobo somatshini ilizwe lam elithwala imveliso likhula ngokukhawuleza, lithwala iintlobo ukusuka kwincinci ukuya enkulu, umgangatho wemveliso kunye nenqanaba lobugcisa ukusuka ezantsi ukuya phezulu, isikali soshishino ukusuka kwincinci ukuya enkulu, kunye nenkqubo yemveliso yobuchwephesha eneendidi zemveliso ezipheleleyo kunye nemveliso esengqiqweni ngakumbi. uyilo lwenziwe.Ukunyamezela kweebheringi zokuphotha kulinganiselwe.Zifaneleke ngokukodwa ukulungiselela amalungiselelo okuthwala afuna ukuchaneka okuphezulu kakhulu kunye nezakhono zesantya.Zifaneleke ngokukodwa ukulungiswa kokuthwala kweeshafu zezixhobo zomatshini.Ngenxa yokuqina kwayo okulungileyo, ukuchaneka okuphezulu, umthamo ophezulu wokuthwala umthwalo kunye nesakhiwo esilula, iibheringi eziqengqelekayo azisetyenziselwanga kuphela i-spindles yezixhobo zoomatshini bokusika ngokubanzi, kodwa zikwathandwa zizixhobo zomatshini wokusika ngesantya esiphezulu.Ukususela kumbono wesantya esiphezulu, iibhereyidi zebhola ezidibeneyo kwii-rolling bearings, ii-cylindrical roller bearings zeyesibini, kunye ne-tapered roller bearings zimbi kakhulu.
Ibhola (oko kukuthi, ibhola) yentsimbi ye-angular ephethe ibhola iyajikeleza kwaye ijikeleze, kwaye ivelisa amandla e-centrifugal Fc kunye ne-gyro torque Mg.Ngokunyuka kwesantya se-spindle, i-centrifugal force Fc kunye ne-gyro torque Mg nayo iya kunyuka ngokukhawuleza, okuya kubangela ukuba ukuthwala kuvelise uxinzelelo olukhulu loqhagamshelwano, oluya kukhokelela ekwandeni kwe-friction ye-bearing, ukunyuka kweqondo lokushisa, ukunciphisa ukuchaneka. kunye nobomi obufutshane.Ngoko ke, ukuze kuphuculwe ukusebenza kwesantya esiphezulu sale mveliso, zonke iinzame kufuneka zenziwe ukucinezela ukwanda kweFc kunye neMg.Ukususela kwifomula yokubala yeebheringi zebhola zoqhagamshelwano ze-angular Fc kunye ne-Mg, kuyaziwa ukuba ukunciphisa ubuninzi bezinto zebhola, ububanzi bebhola kunye ne-angle yoqhagamshelwano yebhola kunenzuzo ukunciphisa i-Fc kunye ne-Mg, ngoko ngoku iphezulu- Isantya sokusonta sihlala sisebenzisa ii-engile zoqhagamshelwano ze-15° okanye i-20° yeebheringi zebhola ezincinci ezidayamitha.Nangona kunjalo, i-diameter yebhola ayinakuncitshiswa kakhulu.Ngokwenene, inokuba yi-70% kuphela ye-diameter ye-standard series yebhola, ukuze ungabi buthathaka ukuqina kokuthwala.Into ebaluleke ngakumbi kukufuna ukuphuculwa kwezinto zebhola.
Xa kuthelekiswa ne-GCr15 ethwele intsimbi, ubuninzi be-silicon nitride (Si3N4) iikeramics yi-41% kuphela yobuninzi bayo.Ibhola eyenziwe ngesilicon nitride ilula kakhulu.Ngokwendalo, amandla e-centrifugal kunye ne-gyro torque eyenziwe ngexesha lokujikeleza ngesantya esiphezulu nazo zincinci.ezininzi.Ngelo xesha, i-modulus elastic kunye nobunzima be-silicon nitride ceramics ngamaxesha angama-1.5 kunye namaxesha angama-2.3 entsimbi yokuthwala, kwaye i-coefficient yokwandiswa kwe-thermal yi-25% kuphela yentsimbi yokuthwala, enokuphucula ukuqina kunye nobomi bokuthwala, kodwa kwakhona Imvume ehambelanayo yokuthwala itshintsha kancinci phantsi kweemeko ezahlukeneyo zokunyuka kweqondo lokushisa, kwaye umsebenzi unokwethenjelwa.Ukongezelela, i-ceramic iyamelana nokushisa okuphezulu kwaye ayinamathele kwintsimbi.Ngokucacileyo, i-sphere eyenziwe nge-silicon nitride ceramic ifaneleke ngakumbi ukujikeleza ngesantya esiphezulu.Ukuziqhelanisa kubonise ukuba i-ceramic ibhola ye-angular contact ball bearings inokunyusa isantya nge-25% ~ 35% xa kuthelekiswa neentsimbi zebhola zentsimbi ezihambelanayo, kodwa ixabiso liphezulu.
Kumazwe angaphandle, iibheringi ezinentsimbi yangaphakathi nangaphandle kunye nezinto eziqengqelekayo zeceramic zibizwa ngokuba ziibheringi ezixutyiweyo.Okwangoku, iibheringi ezixubileyo zineentuthuko ezintsha: enye kukuba izinto ze-ceramic zisetyenziselwe ukwenza ii-roller ze-cylindrical roller bearings, kunye nee-ceramic cylindrical hybrid bearings ziye zabonakala kwiimarike;enye kukusebenzisa insimbi engenasici endaweni yokuthwala intsimbi ukwenza amakhonkco angaphakathi nangaphandle ebheringi, ngakumbi ikhonkco langaphakathi.Ekubeni i-coefficient yokwandiswa kwe-thermal yensimbi engenasici i-20% encinci kuneyentsimbi yokuthwala, ngokwemvelo, ukwanda koxinzelelo loqhagamshelwano olubangelwa ukwanda kwe-thermal yendandatho yangaphakathi kuya kunyanzeliswa ngexesha lokujikeleza kwesantya esiphezulu.
Ixesha lokuposa: Apr-15-2021
