Pehea e koho ai i kahi drill?

I kēia lā, e hōʻike wau pehea e koho ai i kahi drill bit ma o ʻekolu kumu kumu o kadrill bit, ʻo ia hoʻi: nā mea, ka uhi a me nā hiʻohiʻona geometric.

1

Pehea e koho ai i ka mea o ka drill

Hiki ke hoʻokaʻawale ʻia nā mea waiwai i ʻekolu ʻano: ke kila kiʻekiʻe, ke kila kiʻekiʻe i loko o ka cobalt a me ka carbide paʻa.

hao māmā holo kiʻekiʻe (HSS):

ʻO ke kila kiʻekiʻe ka wikiwiki loa i hoʻohana ʻia a ʻoi aku ka liʻiliʻi loa.ʻAʻole hiki ke hoʻohana ʻia ka drill bit o ke kila kiʻekiʻe ʻaʻole wale ma nā wili uila lima, akā i nā wahi me ka paʻa maikaʻi e like me nā mīkini wili.ʻO kekahi kumu no ka lōʻihi o ke kila kiʻekiʻe e hiki ke hoʻopaʻa pinepine ʻia ka mea hana i hana ʻia me ke kila kiʻekiʻe.Ma muli o kona kumu kūʻai haʻahaʻa, ʻaʻole i hoʻohana wale ʻia no ka wili ʻana i nā ʻāpana drill, akā hoʻohana nui ʻia i nā mea hoʻohuli.

ʻO ke kila kiʻekiʻe ʻo Cobalt (HSSCO):

ʻOi aku ka ʻoi aku o ka paʻakikī a me ka ʻulaʻula ma mua o ke kila kiʻekiʻe o ka Cobalt, a ʻo ka hoʻonui ʻana i ka paʻakikī e hoʻomaikaʻi i kona pale ʻana, akā i ka manawa like e kaumaha ana i kahi ʻāpana o kona paʻakikī.E like me ke kila kiʻekiʻe: hiki ke hoʻohana ʻia e hoʻomaikaʻi i ka helu o nā manawa ma ka wili.

 

Carbide (CARBIDE):

ʻO ka carbide i hoʻopaʻa ʻia he mea hoʻohui metala.I waena o lākou, hoʻohana ʻia ka tungsten carbide e like me ka matrix, a ua hoʻohana ʻia kekahi mau mea o nā mea ʻē aʻe e like me ka binder e hoʻopaʻa ʻia e nā ʻano hana paʻakikī e like me ke kaomi isostatic wela.Ke hoʻohālikelike ʻia me ke kila kiʻekiʻe ma ke ʻano o ka paʻakikī, ʻulaʻula paʻakikī, ʻaʻahu kūʻē, a me nā mea ʻē aʻe, aia kahi hoʻomaikaʻi nui, akā ʻoi aku ka nui o ke kumukūʻai o nā mea hana carbide cemented ma mua o ke kila kiʻekiʻe.ʻOi aku ka maikaʻi o ka Carbide ma mua o nā mea hana mua e pili ana i ke ola o ka hāmeʻa a me ka wikiwiki o ka hana.I ka wili pinepine ʻana i nā mea hana, pono nā mea hana wili ʻoihana.

2

Pehea e koho ai i ka uhi drill

Hiki ke hoʻokaʻawale ʻia nā uhi i nā ʻano ʻelima e like me ke ʻano o ka hoʻohana.

ʻAʻole i uhi ʻia:

ʻO nā pahi i uhi ʻole ʻia ka mea maʻalahi loa a hoʻohana mau ʻia i ka mīkini i nā mea palupalu e like me nā alumini alumini a me ke kila māmā.

ʻO ka uhi ʻeleʻele oxide:

Hiki ke hāʻawi aku i ka lubricity ʻoi aku ka maikaʻi ma mua o nā mea hana uncoated, a ʻoi aku ka maikaʻi ma ke ʻano o ka oxidation a me ka pale wela, a hiki ke hoʻonui i ke ola lawelawe ma mua o 50%.

ʻO ka uhi ʻana o Titanium nitride:

ʻO Titanium nitride ka mea uhi maʻamau a ʻaʻole kūpono no ka hana ʻana i nā mea me ka paʻakikī kiʻekiʻe a me ke kiʻekiʻe o ka hana ʻana.

ʻO ka uhi ʻana o ka Titanium carbonitride:

Hoʻokumu ʻia ka Titanium carbonitride mai ka titanium nitride a ʻoi aku ka kiʻekiʻe o ka wela a me ke kūpaʻa ʻana i ka lole, maʻamau a poni a uliuli paha.Hoʻohana ʻia e mīkini i nā mea hana hao hao ma ka hale hana ʻo Haas.

Aluminum Nitride Titanium uhi:

ʻOi aku ka pale ʻana o ka titanium nitride alumini i nā wela kiʻekiʻe ma mua o nā uhi āpau i luna, no laila hiki ke hoʻohana ʻia i nā wahi ʻoki kiʻekiʻe.No ka laʻana, ka hana ʻana i nā superalloys.He kūpono hoʻi ia no ka hana ʻana i ke kila a me ke kila kila, akā ma muli o nā mea i loaʻa i ka aluminika, e kū mai nā hopena kemika i ka wā e hoʻoili ai i ka alumini, no laila e pale i ka hana ʻana i nā mea alumini.

3

Drill bit geometry

Hiki ke hoʻokaʻawale ʻia nā hiʻohiʻona Geometric i 3 mau ʻāpana:

Ka lōʻihi

ʻO ka ratio o ka lōʻihi a me ke anawaena ua kapa ʻia ʻo ia ʻelua anawaena, a ʻo ka liʻiliʻi o ke anawaena pālua, ʻoi aku ka maikaʻi o ka rigidity.Ke koho ʻana i kahi drill me ka lōʻihi o ka ʻaoʻao no ka wehe ʻana i ka chip a me ka lōʻihi overhang pōkole hiki ke hoʻomaikaʻi i ka rigidity i ka wā mīkini, a laila e hoʻonui ai i ke ola lawelawe o ka mea hana.ʻAʻole lawa ka lōʻihi o ka lau e hōʻino paha i ka drill.

ʻO ke kihi wili wili

ʻO ke kihi drill tip o 118° ka mea maʻamau i ka mīkini a hoʻohana pinepine ʻia no nā metala palupalu e like me ke kila māmā a me ka alumini.ʻAʻole maʻamau ka hoʻolālā ʻana o kēia kihi, ʻo ia hoʻi he mea hiki ʻole ke hoʻohana mua i ka lua kikowaena.ʻO ka 135° drill tip angle ka mea maʻamau i ka hana ponoʻī.No ka mea ʻaʻohe pono e mīkini i ka lua kikowaena, ʻaʻole pono kēia e wili kaʻawale i ka lua waena, no laila e mālama i ka manawa nui.

Helix kihi

ʻO kahi kihi helix o 30 ° kahi koho maikaʻi no ka hapa nui o nā mea.Akā no nā kaiapuni e koi ana i ka hoʻokuʻu ʻana i ka chip ʻoi aku ka maikaʻi a me ka ʻoki ʻoki ikaika, hiki ke koho ʻia kahi drill me kahi kihi helix liʻiliʻi.No nā mea paʻakikī i ka mīkini e like me ke kila kila, hiki ke koho ʻia kahi hoʻolālā me kahi kihi helix nui aʻe e hoʻouna i ka torque.