ʻO nā hewa hana CNC
ʻO ka hewa geometric o ka fixture fixture e hana i ka mea hana e like me ka mea paahana a me ka mīkini me ke kūlana kūpono, no laila, he hopena nui ka hewa geometric o ka hewa machining (ʻoi aku ka hewa kūlana).
Loaʻa ka hapa o ka hoʻonohonoho ʻana i ka hewa kuhi hewa a me ka hewa hana hewa ʻole o ka hoʻonohonoho ʻana. Ke hana ʻia ka mea hana ma ka mīkini mīkini, pono e koho i kekahi mau mea geometric ma ka mea hana e like me ka datum kūlana no ka hana ʻana. Inā ʻaʻole kūlike ka datum kūlana i koho ʻia a me ka datum hoʻolālā (ka datum i hoʻohana ʻia no ka hoʻoholo ʻana i ka nui o ka ʻili a me ke kūlana ma ka ʻāpana kiʻi) ʻaʻole i kūlike, e hoʻopuka ʻia ka hala ʻole o ka datum mismatch. ʻO ka ʻili hulina o ka mea hana a me ka ʻāpana ʻimi o ka mea paʻa ka mea i hui pū ʻia. ʻO ka hoʻololi kūlana kiʻekiʻe loa o ka mea hana i hoʻokumu ʻia e ka hana pololei ʻole o ka paʻa ʻimi ʻana a me ka ʻākea male ma waena o ka ʻaoʻao ʻimi i kapa ʻia ʻo ka hewa hana hewa ʻole o ka paʻa ʻimi ʻana. Hiki ke hana ʻia ka hewa hewa o ka hana ʻana i ke ʻano o ka hoʻoponopono ʻana, akā ʻaʻole i ke ʻano o ka ʻoki ʻana.
Kaʻina 'ōnaehana deformation hewa workpiece stiffness: 'ōnaehana kaʻina hana ina ka workpiece stiffness e pili ana i ka mīkini mea paahana, mea paahana, fixture mea haʻahaʻa, ma lalo o ka hana o ka oki ikaika, ka mea hana ma muli o ka nele o ka stiffness ma muli o ka deformation o kakuhi hewaʻano nui. ʻO ka ʻoʻoleʻa mea hana: ʻo ka ʻoʻoleʻa o ka mea hoʻohuli pōʻai waho ma ke ala maʻamau (y) o ka ʻili mīkini he nui loa, a hiki ke nānā ʻole ʻia kona deformation. ʻO ka hoʻoluhi ʻana i ka lua i loko me ka liʻiliʻi liʻiliʻi, ʻo ka ʻoʻoleʻa o ka pahu hāmeʻa he ʻilihune loa, ʻo ka deformation ikaika o ka pahu hāmeʻa he hopena nui i ka pololei o ka mīkini o ka lua.
ʻO ka ʻoʻoleʻa o nā ʻāpana mea hana mīkini: ua haku ʻia nā ʻāpana mīkini i nā ʻāpana he nui. I kēia manawa, ʻaʻohe ala helu kūpono a maʻalahi no ka paʻakikī o nā ʻāpana mīkini. I kēia manawa, hoʻoholo nui ʻia e ke ʻano hoʻokolohua. ʻO nā mea e hoʻopiʻi ai i ka ʻoʻoleʻa o nā ʻāpana mīkini e pili ana i ka deformation pili o ka ʻili hui, ka ikaika friction, nā ʻāpana haʻahaʻa haʻahaʻa a me ka hoʻomaʻemaʻe.
ʻO ka hewa geometric o ka mea paahana kekahi mea hana i ke kaʻina ʻoki ʻana he mea hiki ʻole ke hana i ka lole, a no laila e hoʻololi ai ka nui a me ke ʻano o ka mea hana. ʻOkoʻa ka mana o ka hewa geometric hāmeʻa i ka hewa machining me nā ʻano mea hana like ʻole: i ka wā e hoʻohana ai i nā mea ʻoki paʻa paʻa, e hoʻopili pololei ka hewa hana o ka mea hana i ka pololei o ka mīkini o ka mea hana; Eia naʻe, no ka mea hana maʻamau (e like me ka hoʻohuli ʻana), ʻaʻohe hopena pololei o ka hewa hana i ka hewa machining.
