Cov iav kauv bevel tau muab faib ua ob hom, ib qho yog kauviav bevel, uas nws lub qag loj thiab lub qag me sib tshuam; qhov tod yog lub iav hypoid spiral bevel, nrog qee qhov kev sib txawv ntawm lub qag loj thiab lub qag me. Cov iav spiral bevel siv dav hauv cov teb kis tau tus mob xws li tsheb, dav hlau, thiab kev tsuas vim lawv cov txiaj ntsig xws li cov coefficient loj overlap, muaj peev xwm nqa tau zoo, qhov sib piv kis tau tus mob loj, kis tau tus mob du, thiab suab nrov tsawg. Nws cov yam ntxwv yog:

1. Cov iav bevel ncaj: Cov kab hniav yog ib txoj kab ncaj, sib tshuam ntawm lub apex ntawm lub khob hliav qab, ua rau cov hniav me dua.

2. Helical bevel iav: Cov kab hniav yog ib txoj kab ncaj thiab yog tangent rau ib qho taw tes, ua rau cov hniav me dua.

3. Cov iav kauv sib dhos: cov iav rub rov qab (kuj tsim nyog rau cov iav uas muaj qhov siab sib npaug).

4. Cycloid kauv bevel iav: cov hniav contour.

5. Lub iav bevel xoom degree xoom: Cov hniav txo ob npaug, βm = 0, siv los hloov cov iav bevel ncaj, nrog kev ruaj khov zoo dua, tab sis tsis zoo li cov iav bevel.

6. Cov hniav cycloid xoom-degree bevel iav: Cov hniav contour, βm = 0, siv los hloov cov iav bevel ncaj, nrog kev ruaj khov zoo dua, tab sis tsis zoo li cov iav bevel kauv.

7. Cov hniav siab hom ntawm cov iav kauv bevel feem ntau yog muab faib ua cov hniav txo thiab cov hniav sib npaug. Cov hniav txo suav nrog cov hniav txo qis uas tsis sib npaug, cov hniav txo qis uas sib npaug thiab cov hniav txo ob npaug.

8. Cov hniav sib dhos: cov hniav ntawm qhov kawg loj thiab qhov kawg me me yog tib qhov siab, feem ntau yog siv rau cov iav oscillating bevel.

9. Cov hniav uas tsis yog isotopic ua rau cov hniav me me: cov apexes ntawm lub sub-cone, lub cone sab saud thiab lub hauv paus cone yog sib xws.