Likarolo tse 8 tsa "twist drill" le mesebetsi ea eona

Na u tseba mantsoe ana: Helix angle, point angle, main cutting edge, profile ea flute? Haeba ho se joalo, u lokela ho tsoela pele ho bala. Re tla araba lipotso tse kang: Tsela ea bobeli ea ho itšeha ke efe? Sekhutlo sa helix ke eng? Li ama tšebeliso ea kopo joang?

Hobaneng ho le bohlokoa ho tseba lintho tsena: Lisebelisoa tse fapaneng li beha litlhoko tse fapaneng sesebelisoa. Ka lebaka lena, khetho ea "twist drill" e nang le sebopeho se nepahetseng ke ea bohlokoa haholo bakeng sa sephetho sa ho cheka.

Ha re shebeng lintlha tse robeli tsa mantlha tsa "twist drill": angle point, main cutting edge, cut chisel edge, point cut and point thinning, profil ea flute, core, secondary cutting edge le helix angle.

E le ho finyella katleho e ntle ka ho fetisisa ea ho itšeha ka thepa e sa tšoaneng, likarolo tsohle tse robeli li tlameha ho lumellana.

Ho etsa mohlala oa sena, re bapisa mekhoa e meraro e latelang ea ho sotha:

• Twist drill DIN 338 , HSS-E
• Li-drill tse sothang DIN 338 , HSSE-Co M35
• Twist drill DIN 338 , HSS 4341

Ntlha ea ntlha

The angle angle e teng hloohong ea twist drill. Lehlakore le lekanngoa pakeng tsa likarolo tse peli tse ka sehloohong tsa ho itšeha holimo. Hoa hlokahala hore ho be le ntlha e le 'ngoe e le hore ho be le setsi sa twist drill ka lintho tse bonahalang.

Ha ntlha ea ntlha e le nyane, ho ba bonolo haholoanyane ho tsepamisa mohopolo linthong. Sena se boetse se fokotsa kotsi ea ho thella libakeng tse kobehileng.

Ha lebelo la ntlha le le leholo, nako ea ho tlanya e khutsufala. Leha ho le joalo, ho hlokahala hore ho be le khatello e phahameng ea ho kopana 'me ho tsepamisa mohopolo linthong ho thata haholoanyane.

Geometrically conditioned, angle point e nyane e bolela mahlakore a malelele a mantlha, athe ntlha e kholo e bolela mats'oafo a makhutšoane a mantlha.

Libaka tse ka sehloohong tsa ho itšeha

Libaka tse ka sehloohong tsa ho itšeha li nka mokhoa oa sebele oa ho cheka. Lithako tse telele li na le ts'ebetso e phahameng ea ho itšeha ha e bapisoa le likhahla tse khutšoane, le haeba liphapang li le nyane haholo.

Mochini o sothang o lula o e-na le likarolo tse peli tse kholo tse hokahaneng ka sekhahla se sehiloeng sa chisel.

Seha bohale ba chisel

Moeli o sehiloeng oa chisel o bohareng ba ntlha ea ho cheka 'me ha o na phello ea ho itšeha. Leha ho le joalo, ke ea bohlokoa bakeng sa kaho ea twist drill, kaha e hokahanya likarolo tse peli tse ka sehloohong.

Moeli o sehiloeng oa chisel o ikarabella bakeng sa ho kenya thepa mme o fana ka khatello le khohlano holim'a thepa. Lintho tsena, tse sa rateheng bakeng sa ts'ebetso ea ho cheka, li fella ka ho eketseha ha mocheso oa mocheso le ho eketseha ha tšebeliso ea matla.

Leha ho le joalo, thepa ena e ka fokotsoa ke seo ho thoeng ke "ho fokotsa".

Ho fokotsa lintlha le ho fokotsa lintlha

Ho fokotsa ntlha ho fokotsa sekhahla sa chisel se sehiloeng ka holim'a mochini o sothang. Ho fokotseha ho fella ka phokotso e kholo ea matla a khohlano linthong tse bonahalang, kahoo phokotso ea matla a phepelo a hlokahalang.

Sena se bolela hore ho sesa ke eona ntho ea bohlokoa bakeng sa ho tsepamisa mohopolo linthong. E ntlafatsa ho phunya.

Lintlha tse fapaneng tse tšesaane li lekantsoe ka libopeho tsa DIN 1412. Libopeho tse tloaelehileng haholo ke ntlha ea helical (sebopeho sa N) le ntlha e arohaneng (sebopeho sa C).

Boemo ba lekolilo (profil ea groove)

Ka lebaka la ts'ebetso ea eona e le sistimi ea mocha, boemo ba lekolilo bo khothaletsa ho monya le ho tlosoa ha chip.

Ha profil ea groove e pharalletse, ho monyeha le ho tlosoa ha chip ho molemo.

Ho se tlosoe hantle ha chip ho bolela nts'etsopele ea mocheso o phahameng, oo hape o ka lebisang ho koaletsoeng 'me qetellong ho robehe ha mochini o sothang.

Li-profile tsa groove tse pharaletseng li bataletse, li-profiles tse tšesaane li tebile. Botebo ba profil ea groove bo lekanya botenya ba mantlha ea drill. Flat groove profiles e lumella li-diameter tse kholo (tse teteaneng). Litaba tse tebileng tsa groove li lumella li-diameter tse nyane (tse tšesaane).

Ea mantlha

Botenya ba mantlha ke tekanyo e lekanyetsang botsitso ba mochini o sothang.

Li-drill tsa twist tse nang le bophara bo boholo (tse teteaneng) li na le botsitso bo phahameng ka hona li loketse li-torque tse phahameng le lisebelisoa tse thata. Li boetse li loketse haholo ho sebelisoa liborong tsa matsoho kaha li hanyetsana le ho thothomela le matla a ka morao.

E le ho thusa ho tlosoa ha li-chips ho tloha groove, botenya ba mantlha bo eketseha ho tloha ntlheng ea ho phunya ho ea ho shank.

Li-chamfer tse tataisang le li-cutlets tsa bobeli

Li-chamfer tse peli tse tataisang li fumaneha ho lifolutu. Li-chamfers tsa fatše tse bohale li sebetsa ka ho eketsehileng mahlakoreng a mahlakoreng a borehole 'me li tšehetsa tataiso ea ho phunya lesoba ka mokoting o phuntsoeng. Boleng ba marako a borehole bo boetse bo itšetlehile ka thepa ea li-guide chamfers.

Karolo ea bobeli ea ho itšeha e etsa phetoho ho tloha ho li-chamfers ho ea ho profil ea groove. E lokolla le ho khaola li-chips tse khomaretseng thepa.

Bolelele ba li-chamfers tsa tataiso le likarolo tsa bobeli tsa ho itšeha li itšetlehile haholo ka lehlakoreng la helix.

Helix angle (spiral angle)

Tšobotsi ea bohlokoa ea ho cheka ho sotha ke helix angle (spiral angle). E khetholla mokhoa oa ho theha chip.

Li-angles tse khōloanyane tsa helix li fana ka ho tlosoa ka katleho ha thepa e bonolo, e telele e telele. Ka lehlakoreng le leng, li-angles tse nyenyane tsa helix li sebelisetsoa thepa e thata, e khutšoanyane.

Li-drill tsa twist tse nang le angle e nyane haholo ea helix (10° - 19°) li na le bilika e telele. Ka lehlakoreng le leng, twist drill swith angle e kholo ea helix (27° - 45°) e na le spiral ea rammed (e khuts'oane). Li-drill tsa twist tse nang le spiral e tloaelehileng li na le angle ea helix ea 19 ° - 40 °.

Mesebetsi ea litšobotsi ts'ebelisong

Ha u habanya feela, taba ea twist drills e bonahala e rarahane haholo. E, ho na le likarolo tse ngata le likarolo tse khethollang ho sotha drill. Leha ho le joalo, litšobotsi tse ngata li itšetlehile ka tse ling.

E le hore u fumane mokhoa o nepahetseng oa ho sotha, u ka ikamahanya le kopo ea hau mohato oa pele. Buka ea DIN bakeng sa liboro le li-countersink e hlalosa, tlas'a DIN 1836, karohano ea lihlopha tsa kopo ka mefuta e meraro ea N, H, le W:

Matsatsing ana u ke ke ua fumana mefuta ena e meraro feela N, H, le W 'marakeng, hobane ha nako e ntse e ea, mefuta e hlophisitsoe ka tsela e fapaneng ho ntlafatsa li-drill tsa twist bakeng sa lits'ebetso tse khethehileng. Kahoo, ho entsoe mefuta e nyalisitsoeng eo litsamaiso tsa tsona tsa ho reha mabitso li sa tsitsang bukeng ea DIN. Ho MSK u ke ke ua fumana mofuta oa N feela empa hape le mefuta ea UNI, UTL kapa VA.

Qetello le kakaretso

Joale ua tseba hore na ke likarolo life tsa "twist drill" tse susumetsang ts'ebetso ea ho cheka. Tafole e latelang e u fa kakaretso ea likarolo tsa bohlokoa tsa mesebetsi e itseng.

Ha e le hantle, u ka tseba hore na kopo ea hau ke efe le lisebelisoa tseo u batlang ho li kenya.

Sheba hore na ho fanoa ka li-twist drill life, 'me u bapise likarolo le mesebetsi eo u e hlokang hore thepa ea hau e chekoe.