Nyob rau hauv lub realm ntawm precision machining, tswj kev ncaj ncees thiab seem stability ntawm artifacts yog qhov tseem ceeb tshaj plaws. Txawm li cas los xij, ntau yam tuaj yeem ua rau deformation ntawm precision machining artifacts, uas tuaj yeem cuam tshuam qhov zoo thiab kev ua haujlwm ntawm cov khoom kawg. Ntawm no yog ib qho kev piav qhia ntawm cov yam tseem ceeb uas yuav ua rau deformation:
1. Inherent Material Properties
Lub ntuj yam ntxwv ntawm cov khoom uas yog machined yuav predispose nws mus deformation. Piv txwv li, cov ntaub ntawv uas muaj thermal expansion coefficients los yog cov uas muaj feem xyuam rau cov residual stresses tej zaum yuav raug deformation ntau dua thaum lub sij hawm los yog tom qab machining txheej txheem.
2. Cov teebmeem kub
Machining cov haujlwm ua kom muaj cua sov vim kev sib txhuam ntawm cov cuab yeej thiab cov khoom ua haujlwm. Qhov cua sov no tuaj yeem ua rau thaj chaw nthuav dav, ua rau muaj kev sib hloov lossis kev sib txawv. Yog tias qhov cua txias tsis sib xws, nws tuaj yeem ua rau tsis sib xws thermal expansion thiab contraction, ua rau deformation.
3. Txiav quab yuam
Cov quab yuam los ntawm cov cuab yeej txiav thaum lub sijhawm ua haujlwm tuaj yeem ua rau muaj kev ntxhov siab hauv cov khoom ua haujlwm, uas ua rau elastic lossis yas deformation. Cov nqi noj siab, kev txiav tob, lossis cov tswv yim ua haujlwm hnyav tuaj yeem ua rau qhov teeb meem no ntau dua.
4. Clamping thiab Fixturing
Txoj kev clamping lossis fixturing lub workpiece tuaj yeem ua rau deformation. Kev nruj nruj heev tuaj yeem ua rau muaj kev ntxhov siab hauv qhov chaw ua haujlwm, thaum tsis txaus clamping tuaj yeem tso cai rau lub sijhawm ua haujlwm, ua rau kev txiav tsis raug thiab muaj peev xwm deformation.
5. Kev tshem tawm cov khoom tsis sib xws
Kev tshem tawm cov khoom tsis sib xws lossis cov khoom tsis sib xws thaum lub sijhawm ua haujlwm tuaj yeem ua rau muaj kev ntxhov siab tsis sib xws hauv cov khoom ua haujlwm, ua rau nws deform. Qhov no tuaj yeem tshwm sim yog tias txoj kev cuab yeej tsis zoo lossis yog tias lub cuab yeej hnav tsis sib xws.
6. Cov kev ntxhov siab nyob
Cov kev ntxhov siab uas nyob hauv qab ntawm cov txheej txheem tsim khoom yav dhau los (xws li casting, forging, lossis vuam) tuaj yeem ua haujlwm thaum lub sijhawm ua haujlwm, ua rau deformation. Cov kev ntxhov siab sab hauv no feem ntau tshwm sim thaum lub workpiece sim rov qab mus rau lub xeev ruaj khov dua.
7. Tshuab cuab yeej raug thiab ruaj khov
Qhov tseeb thiab ruaj khov ntawm lub tshuab cuab yeej nws tus kheej tuaj yeem cuam tshuam qhov deformation ntawm cov khoom cuav. Yog hais tias lub tshuab tsis zoo geometric raug, teeb meem kev sib raug zoo, lossis tsis muaj thermal stability, nws tuaj yeem tsim cov khoom uas tsis xav tau deformations.
8. Cov cuab yeej hnav
Raws li kev txiav cov cuab yeej hnav thaum lub sij hawm machining, lawv cov kev ua tau zoo txo qis, thiab lawv tuaj yeem tsim cov khoom tshem tawm tsis sib xws lossis siv tsis sib xws, ua rau muaj peev xwm deformation ntawm workpiece.
9. Cov xwm txheej ib puag ncig
Cov av noo, kub hloov pauv, thiab lwm yam ib puag ncig tuaj yeem cuam tshuam rau cov khoom siv ua haujlwm thiab cov txheej txheem machining. Cov kev hloov ntawm ib puag ncig tej yam kev mob yuav ua rau expansion los yog contraction ntawm lub workpiece, ua rau deformation.
10. Kev kho cua sov tom qab ua haujlwm
Yog hais tias lub precision machining artifact dhau los ntawm kev kho cua sov tom qab machining, nws tuaj yeem muaj kev deformation vim thermal stresses thiab theem transformations uas tshwm sim. Qhov kub, lub sijhawm, thiab qhov txias txias ntawm kev kho cua sov tuaj yeem cuam tshuam rau qhov kawg ntawm qhov ntev.
Txhawm rau txo cov teeb meem no thiab tiv thaiv kev deformation, nws yog ib qho tseem ceeb uas yuav tsum ua tib zoo xaiv cov khoom siv ua haujlwm, ua kom zoo dua qhov kev ua haujlwm tsis zoo, siv cov txheej txheem clamping thiab fixturing, tswj lub tshuab cuab yeej kom raug thiab ruaj khov, thiab xav txog cov kev ntxhov siab thiab ib puag ncig thaum lub sij hawm machining txheej txheem. . Tsis tas li ntawd, kev kho cua sov tom qab kev kho cua sov yuav tsum tau ua tib zoo npaj thiab tswj kom txo qis qhov cuam tshuam ntawm qhov seem ntawm qhov ruaj khov. Los ntawm kev hais txog cov xwm txheej no, cov tuam txhab lag luam tuaj yeem ua kom paub tseeb tias cov khoom siv machining cov khoom siv tau tswj hwm lawv cov duab thiab qhov ntev, ua rau cov khoom zoo thiab txhim khu kev qha kawg.
