Cov Tub Ntxhais Kawm Txuj Ci
Txhais thiab Classification
Cov kab mob yog cov khoom siv hluav taws xob sib txuas uas muaj cov hniav helical; nws yog feem ntau ua ke nrog cov cab iav los tsim cov iav iav teeb, ua kom lub zog sib kis ntawm cov tsis- sib luag, tsis yog - sib tshuam (skewed) shafts.
Cov hom muaj xws li cov kab mob Archimedean, ib txwm ncaj- cov kab mob kab mob, thiab cov kab mob sib kis, nrog rau cov kab tshwj xeeb xws li ceev- cov kab mob txo qis, cov kab mob nrawm nrawm, thiab nplawm - milled worms.
Cov yam ntxwv tseem ceeb ntawm kev ua haujlwm
Lawv pab kom siab iav ratios thiab feature ib tug compact qauv; kev ua haujlwm yog du thiab nyob ntsiag to, thiab qee qhov ib zaug - pib worms muaj tus kheej - xauv lub peev xwm.
Standard worms feem ntau yog ua los ntawm 45-qib steel raug rau quenching thiab tempering, ua tau ib tug hardness ntawm HRC 45-55; worms ua los ntawm 40Cr steel yuav quenched rau HRC 50-55, thiab precision sib tsoo tso cai rau ib tug nto roughness ntawm Ra 0.8 μm.
