Ntu FAQ: Kev daws Micro-Kev kam rau siab thiab lub sijhawm ua haujlwm ntev
Q1: Vim li cas cov hlua khi sib txuas ua ke tshwm sim thaum lub sijhawm siab - nrawm nrawm, txawm tias tus tsav tus pins zoo sib xws?
Lub hauv paus ua rau feem ntau taw qhia rau qhov tsis muaj nuj nqis stripping quab yuam yuav tsum nyob rau hauvstamping tuagchaw nres tsheb tsim. Thaum lub punch retracts los ntawm siab -elasticity steel los xij, cov khoom siv ze rau lub cev punch. Yog tias lub caij nplooj ntoos hlav sab hauv-loaded lossis hydraulic stripper daim hlau siv cov txee tsis txaus-siab, tag nrho cov sawb nqa tau ib ntus ua ntej tso tawm.
Txhawm rau tiv thaiv qhov kev hloov pauv no, cov kws ua haujlwm yuav tsum suav cov kev quab yuam siv cov khoom siv tsis zoo matrix:
$$P_{s}=K_{s} \\times L \\times T \\times \\tau$$
Qhov twg:
$P_{s}$ sawv cev rau qhov tseeb tag nrho lub zog stripping xav tau.
$K_{s}$ yog ib qho empirical stripping coefficient (scaled precisely ntawm $0.03$ thiab $0.08$ nyob ntawm qhov tseeb tensile lub zog ntawm cov khoom hlau tuaj).
$L$ taug qab tag nrho ib puag ncig ntev ntawm txhua qhov kev txiav tawm hla qhov chaw nres tsheb tshwj xeeb.
$T$ sawv cev rau qhov nominal thickness ntawm daim ntawv ntsuas, thiab $\\rho$ yog cov khoom siv shear zog pib.
Yog tias koj tus tsim lub cuab yeej ua tsis tau raws li qhov kev kwv yees $5\\%$ nyob thoob plaws txhua qhov chaw nres tsheb, hnyav - ntsuas lub voj voog yuav ua rau muaj kev cuam tshuam hauv zos, micro-warping tus cab kuj strip thiab compounding pitch yuam kev hauv kab.
Q2: Yuav ua li cas cov cuab yeej cuab yeej tiv thaiv ntug chipping tshwm sim los ntawm thermal stress accumulated nyob rau hauv ntau- ua haujlwm hloov?
Nruam blanking ntawm tus nqi siab tshaj 120 strokes ib feeb ua rau muaj kev sib txhuam hnyav ntawm cov thawj shear kab, thawb hauv zos kub dhau 280 degree. Qhov no localized thermal expansion hloov lub micro- clearance ntawm lub Cheebtsam ntawm lubstamping tuag, transformable coj mus rau nkig chipping.
| Kev Ntsuam Xyuas Kev Nyuaj Siab | Localized Physical Response | Targeted Tooling Countermeasure |
| Kev sib txhuam | Qhov kub thiab txias spikes txo cov cuab yeej steel tempering stability. | Txhim kho siab - cuam tshuam cov blocks rau cov hmoov hlau metallurgy (xws li, CPM 1V lossis Vanadis 4 Ntxiv). |
| Txheej Degradation | Standard TiN txheej txheej oxidizing sai heev nyob rau hauv lub zos tshav kub. | Kev koom ua ke hwm hwm AlCrN lossis Pob Zeb Diamond-Zoo li Carbon (DLC) ntau- txheej txheej txheej los tiv thaiv thermal oxidation. |
| Thermal Expansion | Punch-rau- tuag alignment hloov ua rau tsis sib xws micro-clearances. | Machining tsim cov dej nyab hauv cov dej txias ncaj qha rau hauv cov matrix hnyav thaiv cov phaj rov qab. |
Q3: Dab tsi ntawm qhov ntsuas qhov ntsuas tswj cov cab kuj strip layouts kom lav tau ntev -lub sij hawm sib raug zoo?
Kev tuav cov kab nrib pleb nruj yog qhov tseem ceeb rau kev tiv thaiv kev sib tw ntawm cov txheej txheem raws li qhov ua tau zoo dhau los ntawm ntau qhov tsis ua haujlwm thiab ua haujlwm ua haujlwm. Thaum thinning cov khoom siv choj los txiav cov nqi seem, cov engineers feem ntau ua txhaum txoj cai tseem ceeb ntawm kev nyab xeeb:
[Tshooj Dav Ciam Teb]
├── Ntug Margin: Yam tsawg kawg 1.25 txog 1.5 npaug ntawm cov khoom thickness (T)
├── Internal Choj: Yam tsawg kawg 1.5 zaug T ntawm qhov khoob khoob khoob
└── Pilot Hole Phab Ntsa: Yam tsawg kawg 2.0 npaug ntawm txoj kab uas hla ntawm tus pin tsav
Ua raws li cov ciam teb geometric tshwj xeeb kom ntseeg tau tias cov cab kuj muaj cov kab nrib pleb absorbs structural twist yam tsis muaj buckling. Tsis tas li ntawd, kev sib koom ua ke ntawm cov khoom siv hluav taws xob tsis zoo rau hauv lub cuab yeej thaiv tso cai rau cov xovxwm nres tam sim yog tias qhov sib txawv ntawm lub suab ntau dua $\\pm0.015\\text{mm}$, tiv thaiv tag nrho cov npib nyiaj npib tsis zoo los ntawm kev puas tsuaj loj.