Ke ʻano o ka Mill End

Aia kekahi mau ʻano laulā o nā mea hana wili hope a me nā maka, e like me ka ʻoki waena a me ka ʻoki ʻole waena (inā paha e hiki i ka wili ke lawe i nā ʻoki ʻoki); a me ka hoʻokaʻawale ʻana ma ka helu o nā ʻohe; ma ke kihi helix; ma ka mea; a me ka mea uhi. Hiki ke hoʻokaʻawale ʻia kēlā me kēia ʻāpana e ka noi kikoʻī a me ke geometry kūikawā.

ʻO kahi kihi helix kaulana loa, ʻoi loa no ka ʻoki maʻamau o nā mea metala, ʻo 30 °. No ka hoʻopau ʻanawili hope, he mea maʻamau ka ʻike ʻana i ka ʻōniʻoniʻo paʻa, me nā kihi helix 45° a i ʻole 60°.ʻO nā wili hope ʻohe pololei(helix angle 0°) hoʻohana ʻia i nā noi kūikawā, e like me ka milling plastics a i ʻole composites o ka epoxy a me ke aniani. Ua hoʻohana ʻia nā wili ohe ohe pololei i ka mōʻaukala no ka ʻoki metala ma mua o ka hana ʻia ʻana o ka mīkini hoʻopau ʻohelical e Carl A. Bergstrom o Weldon Tool Company i ka makahiki 1918.

Aia nā hale wili hope me ka helix flute hoʻololi a i ʻole pseudo-random helix angle, a me nā geometries flute discontinuous, e kōkua i ka wāwahi ʻana i nā mea i ʻāpana liʻiliʻi i ka wā e ʻoki ana (e hoʻomaikaʻi i ka haʻalele ʻana i ka chip a me ka hōʻemi ʻana i ka pilikia o ka jamming) a e hōʻemi i ka hoʻopili ʻana i nā mea hana ma nā ʻoki nui. Hoʻokomo pū kekahi mau hoʻolālā hou i nā hiʻohiʻona liʻiliʻi e like me ke kihi chamfer a me ka chipbreaker. ʻOiai ʻoi aku ka pipiʻi, ma muli o ka hoʻolālā paʻakikī a me ke kaʻina hana, peneiwili hopehiki ke lōʻihi ma muli o ka liʻiliʻi o ka lole a hoʻomaikaʻi i ka huahana i lokokiʻekiʻe māmā mīkini(HSM) noi.

Ke lilo nei i mea maʻamau no ka hoʻokomo ʻia ʻana o nā wili paʻa paʻa kuʻuna me ka hoʻokomo ʻia ʻana o nā kumu kūʻaimea ʻoki ʻoki(ʻo ia, ʻoiai ʻoi aku ka pipiʻi ma mua, e hōʻemi i nā manawa hoʻololi mea hana a hiki ke hoʻololi maʻalahi i nā kihi ʻokiʻoki ʻia a haki paha ma mua o ka hāmeʻa holoʻokoʻa).

Kūʻai ʻia nā wili hope ma ka imperial a me ka metric shank a me ka ʻoki ʻana. Ma USA, hiki ke loaʻa ka metric, akā hoʻohana wale ʻia ma kekahi mau hale kūʻai mīkini a ʻaʻole nā ​​mea ʻē aʻe; ma Kanada, ma muli o ke kokoke ʻana o ka ʻāina i ka US, ʻoi aku ka like. Ma Asia a me ʻEulopa, he maʻamau nā anawaena metric.