Twist Drill: Cov Khoom Tseem Ceeb Cov Khoom Taw Qhia

Twist drills yog cov cuab yeej siv dav siv ntau tshaj plaws rau lub qhov machining, renowned rau lawv versatility, precision thiab adaptability rau ntau yam ntaub ntawv thiab ua scenarios. Lawv qhov kev ua tau zoo tseem ceeb yog txiav txim siab los ntawm cov qauv tsim, xaiv cov khoom siv, geometric tsis thiab txheej txheej, nrog cov ncauj lus kom ntxaws raws li hauv qab no:

1. Cov qauv tsim qauv tsim

Tus qauv twist xyaum yog tsim los ntawm peb qhov tseem ceeb, txhua qhov ua haujlwm tseem ceeb hauv kev ua haujlwm drilling:

• Shank: Lub clamping thiab fais fab kis tau tus mob, muab faib ua ncaj shank (rau drills Tsawg dua los yog sib npaug rau 12mm nyob rau hauv txoj kab uas hla, sib xws nrog tes xyaum thiab lub teeb lub tshuab cuab yeej) thiab taper shank (Morse taper tsim rau drills ＞12mm, haum rau hnyav -duty machining nrog ruaj khov quab yuam kis tau tus mob).

• Caj Dab: Qhov chaw hloov pauv ntawm lub shank thiab lub cev, ua raws li qhov chaw nyem rau kev sib tsoo thiab ib qho chaw cim rau cov ntsiab lus tseem ceeb (inch, cov khoom siv, hom).

• Lub Cev (Txoj Haujlwm Ua Haujlwm): Lub hauv paus txiav thiab kev taw qhia, suav nrog ob lub ntsiab lus tseem ceeb - ntu:

◦ Txiav Lub Taub Hau: Nta ob lub ntsiab txiav cov npoo, ib tug chisel ntug (rau centering), rake ntsej muag (kauv saum npoo rau nti ntws) thiab flank ntsej muag (txo txiav kev sib txhuam).

◦ Kev taw qhia Tshooj: Nruab nrog cov npoo av rau qhov ncaj drilling thiab me ntsis rov qab taper tsim (inch tapers rau lub shank) kom txo tau kev sib txhuam nrog lub qhov phab ntsa; nws kuj yog ib tug cia rau regrinding tom qab hnav.

2. Qhov tseem ceeb Geometric Parameters

Precision-machined geometric lub kaum ntse ntse yog lub hauv paus ntawm kev sib tw qhov kev ua haujlwm ntawm kev txiav, ua kom zoo rau kev sib npaug ntawm kev ua haujlwm, lub zog thiab lub qhov zoo:

• Lub kaum sab xis: Lub kaum sab xis ntawm ob lub ntsiab txiav (118℃± 2℃rau cov qauv xyaum), zoo tagnrho rau cov khoom siv hlau feem ntau; 135℃rau cov hlau tawv (xws li, quenched steel) thiab 150℃rau loj - txoj kab uas hla qhov machining. Lub kaum sab xis me dua txo qhov quab yuam axial, thaum lub kaum sab xis loj dua txhim kho lub zog tho lub zog.

• Lub kaum ntse ntse: Qhov sib txawv ntawm 18℃mus rau 38℃(28℃-}32℃rau kev siv thoob ntiaj teb), lub kaum sab xis ntawm lub helical flute thiab laum axis. Cov ces kaum loj txhim kho nti khiav tawm tab sis txo qis rigidity; cov ces kaum me yog siv rau micro-drills los xyuas kom meej cov qauv kev ruaj ntseg.

• Lub kaum sab xis Clearance: Nws txawv ntawm ntug kev txiav (8℃-10℃ntawm sab nraud txoj kab uas hla rau ntug zog, 20℃-25℃nyob ze ntawm lub chisel ntug kom them nyiaj rau axial feed effect), txo qis hnav ntawm lub ntsej muag flank thiab workpiece.

• Chisel Edge Angle: 50℃-55℃rau kev xyaum xyaum; lub kaum sab xis loj ua rau lub chisel ntug, txo cov axial quab yuam thiab txhim kho qhov tseeb ntawm qhov chaw.

3. Cov khoom siv & txheej txheej xaiv

Cov khoom siv thiab txheej xaiv ncaj qha cuam tshuam rau kev xyaum ua haujlwm nyuaj, hnav tsis kam, tiv thaiv tshav kub thiab kev pabcuam lub neej, haum rau cov khoom siv sib txawv:

Cov ntaub ntawv tseem ceeb

• High-Speed ​​Steel (HSS): Cov khoom siv ntau tshaj plaws, muab cov tawv tawv zoo heev thiab ua haujlwm kub (txog 600 degree), haum rau drilling carbon steel, txhuas, yas thiab ntoo.

• Cobalt High-Speed ​​Steel (HSS-}Co): Alloyed nrog 5%-8% cobalt, khav theeb hardness thiab kub tsis kam tshaj tus qauv HSS, zoo tagnrho rau stainless hlau, hlau alloy thiab cam khwb cia hlau.

• Khoom Carbide: Ultra- cov khoom siv tawv (HV 1800-}2000) nrog kev hnav zoo dua, tsim los rau cov hlau quenched, titanium alloy thiab lwm yam siab - cov ntaub ntawv hardness (yuav tsum tau txiav cov kev txwv kom tsis txhob brittleness-induced breakage).

• Carbon Steel: Economic kev xaiv nrog zoo toughness, txwv rau drilling ntoo thiab MDF (tsis haum rau siab -kub hlau txiav).

Cov txheej txheem tiv thaiv

• TiN (Titanium Nitride): Golden txheej uas ua rau cov tawv tawv nce 2-3 zaug thiab ncua kev pab cuam lub neej los ntawm 300%, haum rau kev siv hlau dav dav (tsis yog-regrindable).

• TiAlN/TiCN: Advanced multi-txheej txheej txheej nrog zoo siab -kub tsis kam (txog 800 degree) dua TiN, zoo tagnrho rau siab - ceev txiav ntawm hard alloys thiab stainless hlau.

4. Qhov tseem ceeb ntawm kev ua tau zoo

• Versatility: Adapts mus rau ntau yam workpieces (hlau, plastics, ntoo, composites) thiab cov khoom siv (tes xyaum, xyaum presses, CNC machining chaw), nrog ib txoj kab uas hla ntawm 0.25mm mus rau 80mm rau micro rau loj qhov machining.

• Kev khiav tawm kom zoo: Helical flutes kom cov nti ntws zoo, tiv thaiv kev txhaws, overheating thiab laum breakage thaum lub sij hawm siab - txiav ceev.

• Tus nqi-Kev ua tau zoo: HSS xyaum yog pheej yig thiab rov ua dua; carbide drills muab lub neej ua haujlwm ntev, txo cov cuab yeej hloov pauv thiab hloov cov nqi rau ntau lawm.

• Precision Drilling: Symmetrical txiav npoo thiab cov npoo av qhia kom ncaj, puag ncig qhov nrog qhov sib txawv me me thiab qhov roughness.

Twist xyaum yog qhov tseem ceeb hauv kev tsim khoom, kev tsim kho thiab kev ua haujlwm ntoo, nrog rau lawv cov yam ntxwv tsis tu ncua kom ua tau raws li qhov xav tau ntawm kev hloov pauv ntawm siab -precision, siab- ua haujlwm niaj hnub machining.