Yintoni na izibonelelo nendlela ukubala ngayo?

Ngaphambi kokuba ufumane inxalenye igqityiwe, lo preform ukwenza eninzi imisebenzi ezahlukeneyo. Enye yezinto ezibalulekileyo azimisele yesibonelelo ukuze iqwalaselwe. Ubukhulu balo - ngumahluko phakathi ubungakanani workpiece kunye ubungakanani iinkcukacha kumzobo. Kweli nqaku, sifunda ukuba isibonelelo nendlela ubale ngayo.

iintlobo izibonelelo

Oversize - umaleko ngentsimbi leyo isusiwe phezu workpiece ukufumana inxalenye ogqityiweyo. Oku kuyimfuneko ukuze kuqinisekiswe ngokuchaneka ubungakanani ezifunekayo kunye nomgangatho ofunekayo wobuso workpiece. Siye safumanisa ukuba isibonelelo, kodwa yazi ngoku yintoni na ezahlukeneyo. Kuxhomekeka kwindlela woveliso ilungu, i izibonelelo ukuze aphakathi, kwaye mezhduoperatsionnymi eqhelekileyo. Ngokuqhelekileyo, le yokugqibela ibalwa ngokudibanisa mezhduoperatsionnyh. Isibonelelo kungabalelwa njenge ubungakanani ethile, kwaye kwicala.

Ukusuka apho ixabiso kuxhomekeke?

Sele Sifumanise ukuba isibonelelo, kodwa ngoku sifunda ntoni iimeko ixhomekeke kubungakanani bayo. Kwindawo yokuqala, Kakade ke, imiqathango zobugcisa ezisemgangathweni komhlaba kunye nokuchaneka iinxalenye. Ngaphezu koko, ubungakanani umxhesho kuxhomekeke kuqwalaselo kunye neenkcukacha yobukhulu balo. Enye into ebalulekileyo eziphembelela ixabiso ekhethiweyo - uhlobo kwimveliso. Asimele silibale malunga iinkcukacha ufakelo yesiphoso isixhobo.

Ukubalwa lesibonelelo ngeendlela ezimbini

Siye safumanisa ukuba isibonelelo yaye yintoni ezichaphazela ubukhulu bayo kwaye ngoku siyazi ukuba ubale kanjani na. Kukho iindlela ezimbini:-manani (itheyibhile) kunye okuhlalutya (kulendawo). Imvelaphi emiselwe neMigangatho State, kwaye ngokufanelekileyo kuxhomekeke kuhlobo workpiece kunye nendlela processing. Kuqala kwinto zonke, ukuze ukubala ubungakanani wesibonelelo nokuhlawulwa indlela-manani, kuyimfuneko ukuphuhlisa indlela workpiece machining. Ngaphezu koko, nokumelana yokuvelisa ababelwe shintsha zobugcisa. Ngoku, ngokutsho tafile, kunye izinto ehambelana ababelwe GOSTs isibonelelo R _z kunye h. Ngaphezu koko, kuyimfuneko ukuba zibale ixabiso iimpazamo lilonke lwendawo. Isibonelelo kwezobugcisa ibalwa indlela tabular, kuyimfuneko ukuqala ukubala ukusuka utshintsho lokugqibela, oko kukuthi, ukuze umva le nkqubo.

Ukuze kubalwe le ndlela okuhlalutya isibonelelo usebenzisa ifomula ilandelayo.

Kuba iindawo zezindlu:

Kuba iindawo flat:

apho:

• R _z - ixabiso microroughness;
• h - ubunzulu esibekwa unesiphako;
• ρ _i-1 - ixabiso ezinxaxhileyo lomhlaba lilonke;
• ε _i - workpiece setting isiphoso;
• i - imalana yale msebenzi.

nesibonelelo esiPhakathi ukuba machining (ubuncinane) zibalwa kunye ngqo ophezulu kakhulu - ukuya micrometer, kwaye kufuneka sivelise ngokusondeza phezulu.

Nangona ezinye uhlobo yesibonelelo lubalwa, kuyimfuneko ukuba uthathe ingqalelo yokuba ixabiso layo kufuneka igqithe ubukhulu chip ubuncinane, nto leyo ethatha ukuba isixhobo ukusika kwi abaliweyo kwinkqubo inyathelo. Kakade ke, kwiimeko ezahlukeneyo kwaye kwiintlobo ezahlukeneyo zokulungisa ifomula a workpiece vyshenapisannogo zisenokwahluka kancinane. Ngokomzekelo, ukususela ubunzulu formula umaleko isiphako ezisusiweyo kunye isibonelelo saso (h _i-1) ukugaya emva unyango ubushushu, ekubeni kulo mzekelo umaleko umphezulu kufuneka kugcinwe.