Kev txhais ntawm Bolt
A ntsia liaj qhov roojyog homthreaded fastenertsim los muab tso rau hauv qhov sib npaug ntawm ob los yog ntau dua thiab ruaj ntseg ntawm sab nraud nrog atxiv ntseej, tsim kom muaj lub zog clamping uas tuav lub rooj sib dhos ua ke hauv qhov nro. Bolts yog qhov txawv ntawm cov ntsia hlau feem ntau los ntawm lawv qhov kev npaj siv nrog cov txiv ntseej mating es tsis yog tsav ncaj qha mus rau hauv lub qhov tapping lossis tsim lawv tus kheej cov xov hauv workpiece.
Cov yam ntxwv tseem ceeb
Sab nraud xov: Ib tug nruam helical ridge (txiv neej xov) machined raws cylindrical shank
Lub taub hau: Ib qho kawg tsim (feem ntau hexagonal, square, los yog puag ncig) uas muab cov kabmob nto thiab ua kom lub zog siv los ntawm cov cuab yeej xws li wrenches lossis sockets
Shank: Lub unthreaded feem ntawm lub taub hau thiab threaded seem, uas bears shear loads thiab muab meej qhov chaw nyob rau hauv clearance qhov
Txiv ntseej compatibility: Tsim los ua phooj ywg nrog cov txiv ntoo sab hauv los tsim cov clamping preload los ntawm kev tswj nruj
Distinction los ntawm Related Fasteners
表格
| Fastener Hom | Txhais Feature |
|---|---|
| Bolt | Siv nrog txiv ntseej; ntxig los ntawm qhov clearance; feem ntau generates clamping quab yuam nyob rau hauv nro |
| Ntsia hlau | Koom nrog cov xov sab hauv hauv qhov chaw ua haujlwm (tapping qhov) lossis tsim nws cov xov; feem ntau headless los yog nrog tshwj xeeb tsav nta |
| Stud | Headless fastener threaded ntawm ob qhov kawg; ib kawg yog tas mus li nyob rau hauv ib tug tivthaiv thaum lwm tus tau txais ib tug txiv ntseej |
| Teem ntsia hlau | Headless ntsia hlau nrog tsav sab hauv; siv los tiv thaiv cov khoom los ntawm nias tiv thaiv ib tug ncej los yog nto |
Qhov sib txawv ntawm bolts thiab screws tsis yog ib txwm nruj hauv kev xyaum; qee qhov fasteners tuaj yeem ua haujlwm raws li nyob ntawm daim ntawv thov. Txawm li cas los xij, hauv cov qauv kev tsim vaj tsev thiab cov kev qhia tshwj xeeb, muaj cov txiv ntoo thiab kev siv lub qhov tshem tawm tseem yog cov txheej txheem rau kev faib ua lub bolt.
Txoj Cai Ua Haujlwm
Thaum nruj, ib tug ntsia liaj qhov rooj stretches elastically, tsimtensile preloaduas clamps cov khoom sib koom ua ke. Qhov kev thauj khoom ua ntej no yuav tsum dhau qhov kev cia siab ntawm kev pabcuam sab nraud kom tiv thaiv kev sib cais. Lub clamping quab yuam yog tswj los ntawm kev siv torque, uas yog hloov mus rau hauv bolt nro los ntawm cov xov geometry thiab kev sib txhuam ntawm cov kabmob thiab cov xov txuas. Preload kom raug:
Resistance rau static thiab dynamic loads
Kev tiv thaiv cov dej xau hauv cov hlab ntsha siab
Kev saib xyuas ntawm cov qauv sib dhos
Kev qaug zog tiv thaiv los ntawm kev ua kom lub ntsej muag sib koom ua ke hauv compression
Standardization
Bolts yog tsim los rau lub teb chaws thiab thoob ntiaj teb cov qauv uas qhia qhov ntev, cov khoom siv kho tshuab, cov khoom siv, thiab cov kev xeem yuav tsum tau ua. Cov qauv uas muaj xws li:
TS EN ISO 898-1: Mechanical zog ntawm carbon steel thiab alloy steel bolts
ASTM A193 / A194 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / A194 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193 / ASTM A193) thiab ASTM A193: Alloy steel thiab stainless hlau bolting cov ntaub ntawv rau siab -kev pab kub
SAE J429: Mechanical thiab cov khoom yuav tsum tau rau sab nraud threaded fasteners
DIN cov qauv: German qhov loj me thiab cov cuab yeej specifications dav saws thoob ntiaj teb
Standardization ua kom muaj kev sib hloov, kev ua tau zoo, thiab ua raws li kev nyab xeeb - cov ntawv thov tseem ceeb hauv kev tsim kho, tsheb, aerospace, thiab cov tshuab ua haujlwm.
