Kuroverwa KweSimbi Yakaomeswa NePCBN Cutter

Kurovera kwesimbi yakaoma nePCBN cutter

Mumakore gumi apfuura, kukwizwa chaiko kwesimbi dzakaomeswa nepolycrystalline cubic boron nitride (PCBN) inoiswa kwave kutsiva kukuya kwechinyakare zvishoma nezvishoma. Tyler Economan, mutariri weinjiniya kuIndex, USA, akati, "Kazhinji, kukuya grooves inzira yakatsiga inopa kurongeka kwepamusoro pane grooving. Zvisinei, vanhu vachiri kuda kukwanisa kupedzisa workpiece palathe. Kugadziriswa kwakasiyana-siyana kunodiwa."

Zvishandiso zvakasiyana-siyana zvakaomeswa zvinosanganisira simbi yekumhanya, simbi inofa, simbi inotakura uye alloy simbi. Masimbi ane ferrous chete anogona kuomeswa, uye maitiro ekuomesa anowanzo shandiswa kune yakaderera kabhoni simbi. Kuburikidza nekuomeswa kwekurapa, iyo yekunze kuomarara kweiyo workpiece inogona kuitwa yakakwirira uye inopfekwa, nepo mukati mune zviri nani kuoma. Zvikamu zvakagadzirwa nesimbi yakaomeswa zvinosanganisira mandrels, ekisero, zvinobatanidza, mavhiri ekutyaira, camshafts, magiya, bushings, drive shafts, bearings, nezvimwe zvakadaro.

Zvisinei, "zvinhu zvakaoma" ihama, inoshandura pfungwa. Vamwe vanhu vanofunga kuti workpiece zvinhu zvine kuoma kwe40-55 HRC zvinhu zvakaoma; vamwe vanotenda kuti kuoma kwezvinhu zvakaoma kunofanira kuva 58-60 HRC kana kupfuura. Muchikamu ichi, maturusi ePCBN anogona kushandiswa.

Mushure mekuomeswa kweiyo induction, iyo nzvimbo yakaomeswa yakaomeswa inogona kusvika 1.5mm gobvu uye kuomarara kunogona kusvika 58-60 HRC, nepo zvinhu zviri pasi pedenga repamusoro kazhinji zvakapfava. Muchiitiko ichi, zvakakosha kuve nechokwadi kuti yakawanda yekucheka inoitwa pasi pepamusoro pevhu rakaoma.

Zvishandiso zvemuchina zvine simba rakakwana uye kusimba inzvimbo inodiwa yekugezera yezvikamu zvakaomarara. Maererano neEconoman, "Zviri nani kuomarara kwechigadzirwa chemuchina uye kuwedzera kwesimba, kunowedzera kushanda zvakanaka kwegorofu yechinhu chakaomeswa. Kune zvishandiso zvebasa zvine kuoma kweanopfuura 50 HRC, maturusi akawanda emagetsi emwenje haasangane nemamiriro ekucheka anodiwa. Kana simba remuchina (simba, torque, uye kunyanya kusimba) rakapfuudzwa, machining haagone kupedzwa zvinobudirira. "

Rigidity inonyanya kukosha kune workpiece inobata chigadziro nokuti iyo yekuonana pamusoro pekucheka kwekucheka ine workpiece yakakura panguva ye grooving process, uye chigadziro chinoshandisa simba guru pane workpiece. Kana uchisungirira simbi yakaomeswa yekushanda, yakafara mbambo inogona kushandiswa kuparadzira iyo clamping pamusoro. Paul Ratzki, maneja wekushambadzira weSumitomo Electric Hard Alloy Co., akati, "Zvikamu zvichagadzirwa zvinofanirwa kutsigirwa zvakasimba. Paunenge uchigadzira zvinhu zvakaomeswa, kuzununguka uye kudzvanywa kwechishandiso kunogadzirwa kwakakura kupfuura kana uchigadzira ma workpiece akajairwa, izvo zvinogona kuita kuti workpiece clamping. Haikwanise kubhururuka kunze kwemuchina, kana kukonzera kuti chip CBN iparadze."

Iyo shank inobata grooving insert inofanira kunge ipfupi sezvinobvira kuderedza overhang uye kuwedzera kusimba kwechishandiso. Matthew Schmitz, maneja weGRIP zvigadzirwa kuIsca, anonongedza kuti kazhinji, maturusi e monolithic akanyanya kukodzera kugezesa kwezvinhu zvakaomeswa. Nekudaro, iyo kambani inopawo modular grooving system. "Iyo modular shank inogona kushandiswa mumamiriro ekugadzira apo chishandiso chinowanzo kutadza kamwe kamwe," anodaro. "Haufanire kutsiva shank yese, iwe unongoda kutsiva chikamu chinodhura. Iyo modular shank inopawo zvakasiyana-siyana zvemachining sarudzo. Iskar's Grip modular system inogona kuiswa mumhando dzakasiyana dzezvigadzirwa. Unogona kushandisa mudziyo une 7 mablades akasiyana e7 chigadzirwa mitsara kana chero nhamba yemashizha ekugadzirisa zvakasiyana Mutsetse wechigadzirwa wakafanana nehupamhi hwe slot. "

Sumitomo ELectric's toolholders yekubata CGA-mhando inoisa inoshandisa yepamusoro-clamping nzira inodhonza blade kudzoka mumubati. Ichi chibatiso chinewo siruu yekumisa parutivi kubatsira kuvandudza kugadzikana uye kuwedzera hupenyu hwematurusi. Rich Maton, mubatsiri maneja wedhipatimendi rekugadzira dhipatimendi, akati, "Ichi chibatiso chekushandisa chakagadzirirwa grooving yezvakaoma workpieces. Kana blade inofamba mumubati, blade inopfeka nekufamba kwenguva uye hupenyu hwemashandisi hunochinja. Nokuda kwepamusoro-productivity machining zvinodiwa zvemotokari yemotokari (yakadai se50-100 kana 100 kana 150 yehupenyu hunokosha hunoita shanduko yehupenyu hunokosha) hupenyu hunogona kuita zvakakosha pakugadzirwa. "

Sekureva kwemishumo, Mitsubishi Materials 'GY akateedzera Tri-Lock modular grooving system inofananidzwa mukuomarara kune akabatanidzwa blade chucks. Iyo sisitimu yakavimbika inobata ma grooving blades kubva kumativi matatu (peripheral, kumberi uye kumusoro). Magadzirirwo ayo maviri ekugadzirisa anodzivirira blade kuti irege kubviswa panguva ye grooving: V-shaped projection inodzivirira blade kubva kumativi; kiyi yekuchengetedza inobvisa kuenderera mberi kweblade kunokonzerwa nekucheka simba panguva ye slot machining.

Inowanzo shandiswa grooving insert yezvikamu zvesimbi dzakaomeswa zvinosanganisira nyore masikweya kuisa, kugadzira kuisa, slotted kuisa, nezvimwe zvakadaro. Kazhinji, ma grooves akachekwa anodiwa kuti ave nepamusoro pekupedzisira nekuti ane chikamu chekusangana, uye mamwe maO-mhete kana snap ring grooves. Sekureva kwaMark Menconi, nyanzvi yechigadzirwa paMitsubishi Materials, "Maitiro aya anogona kukamurwa kuita yemukati dhayamita groove machining uye ekunze dhayamita groove machining, asi akawanda grooving maoparesheni anoda kucheka kwakanaka, kusanganisira kujeka kubata chaiko kubva kunosvika 0.25 mm kudzika kwekucheka. Cheka kusvika pacheka yakazara nekudzika kunosvika 0.5mm."

Iyo grooving yesimbi yakaomeswa inoda kushandiswa kwezvishandiso zvine kuomarara kwepamusoro, zviri nani kupfeka kuramba uye yakakodzera geometry. Chinokosha ndechekuona kuti carbide insert, ceramic insert kana PCBN inoisa inofanira kushandiswa. Schmitz akati, "Ini nguva dzose ndinosarudza carbide inserts kana ndichigadzira workpieces ine hardness pazasi 50 HRC. Kune maworkpiece ane kuomarara kwe50-58 HRC, Ceramic inserts isarudzo ine hupfumi." Chete kana iyo workpiece CBN inoiswa inofanirwa kutariswa nekuomarara kusvika ku58 HRC. Iyo CBN inoisa iyo inonyanya kukodzera yekucheka-yakaoma machini asi kwete yakanyanya kunaka machining machini. chishandiso / workpiece interface.

Pakurovera kwesimbi dzakaomeswa zvikamu zvine kuoma kweinopfuura 58 HRC, chip control harisi dambudziko. Sezvo yakaoma grooving inowanzoshandiswa, machipisi akafanana neguruva kana zvidimbu zviduku uye anogona kubviswa nemaoko. Sumitomo Electric's Maton akati, "Kazhinji, rudzi urwu rweswafi runotyoka nekuparara kana ichinge yarova chero chinhu, saka kubata kweiyo swarf neye workpiece hakuzokanganisa workpiece. Kana iwe ukabata swarf, ivo vanopwanya muruoko rwako. ”

Chimwe chezvikonzero nei kuisirwa kweCBN kwakakodzera kucheka kwakaoma ndechekuti kunyangwe kupikisa kwavo kupisa kwakanaka kwazvo, mashandiro ekugadzirisa anodzikiswa zvakanyanya muchiitiko chekuchinja kwekushisa. Economan anoti, "Kutaura zvazviri, kana iyo CBN yekuisa ikasangana neiyo workpiece zvinhu, inoburitsa kupisa kwekucheka pamuromo, asi nekuti iyo CBN yekuisa haichinjike kune tembiricha shanduko, zvakaoma kutonhorera zvakakwana kuchengetedza tembiricha isingaperi. State. CBN yakaoma kwazvo, asi zvakare ine brittle uye inogona kuputika nekuda kwekushanduka kwekushisa. "

Kana uchicheka simbi zvidimbu zvine kuomarara kwakaderera (senge 45-50 HRC) ine simende carbide, ceramic kana PCBN inoisa, machipisi anogadzirwa anofanira kunge ari mapfupi sezvinobvira. Izvi zvinonyatsobvisa kupisa kwekucheka mumudziyo wekushandisa panguva yekucheka nokuti machipisi anogona kutakura huwandu hwakawanda hwekupisa.

Iskar's Schmitz inokurudzirawo kuti chishandiso chigadziriswe mu "inverted" state. Akatsanangura kuti, "Paunenge uchiisa mudziyo pamuchina wemuchina, mudziyo unofarirwa nemugadziri wemuchina unoiswa nekucheka blade kumeso kumusoro, sezvo izvi zvichibvumira kutenderera kwechishandiso kuti chiite kudzika kwakadzika pachitima chemuchina kuti muchina urambe wakatsiga." Zvisinei, kana blade ikachekwa kuita workpiece zvinhu, machipisi akaumbwa anogona kuramba ari pabadza uye chibatiso chepamusoro chikatenderedzwa kumusoro uye chibatiso chepamusoro. blade haizoonekwe, uye kuyerera kwechip kunobva kwatiza kubva munzvimbo yekucheka pasi pechiito chegiravhiti. "

Kuomeswa kwepamusoro inzira iri nyore yekuvandudza kuomarara kwesimbi yakaderera kabhoni. Nheyo ndeyekuwedzera iyo kabhoni yemukati pane imwe kudzika pasi pepamusoro pezvinhu. Kana iyo grooving yakadzika ichipfuura ukobvu hwepamusoro hwakaomeswa layer, mamwe matambudziko anogona kubuda nekuda kwekuchinja kwe grooving blade kubva kune yakaoma zvinhu kuenda kune yakapfava. Kuti izvi zviitike, vagadziri vezvishandiso vakagadzira akati wandei blade mamakisi emhando dzakasiyana dzeworkpiece zvinhu.

Duane Drape, maneja wekutengesa kuHorn (USA), akati, "Paunenge uchichinja kubva kune chinhu chakanyanya kuoma kuenda kune chakapfava, mushandisi haadi nguva dzose kushandura blade, saka isu tinofanirwa kuwana chishandiso chakanakisa cherudzi urwu rwemachining. Kana iyo simende yekuisa carbide ikashandiswa, ichasangana nedambudziko rekunyanyisa kupfeka apo blade inocheka nzvimbo yakaoma yakaoma. kukuvadza blade. Tinogona kushandisa chibvumirano: yakakwira kuomarara carbide inoisa + super lubricated coatings, kana yakapfava CBN isa mamakisi + ekucheka anoisa akakodzera kucheka zvinhu zvakajairika (pane kuomesa machining).

Drape akati, "Unogona kushandisa CBN inoisa kucheka zvinobudirira zvishandiso zvebasa nekuoma kwe45-50 HRC, asi blade geometry inofanirwa kugadziriswa. Yakajairika CBN inoisa ine chamfer isina kunaka pamucheto wekucheka. Iyi inegetive chamfer CBN yekuisa yakapfava kumuchina. Kana iyo workpiece ikashandiswa, zvinhu zvacho zvichange zviine giredhi rezasi reCBN. kuomarara kunoshandiswa uye iyo geometry yekucheka kumucheto inoshandurwa, iyo workpiece ine kuomarara kwe45-50 HRC inogona kubudirira kucheka.

Iyo S117 HORN grooving insert yakagadziridzwa nekambani inoshandisa PCBN tip, uye kudzika kwekucheka kunosvika 0.15-0.2 mm kana giya regeji rakachekwa chaizvo. Kuti uwane kupedzisa kwepamusoro, blade ine ndege yekutsvaira pane imwe neimwe yekucheka kumativi ose maviri.

Imwe sarudzo ndeye kushandura matanho ekucheka. Maererano neIndex's Economan, "Mushure mekucheka nepakati yakaomeswa, zviyero zvakakura zvekucheka zvinogona kushandiswa. Kana iyo yakaomeswa yakadzika inongova 0.13mm kana 0.25mm, mushure mekucheka kuburikidza nekudzika uku, kana mashizha akasiyana-siyana anotsiviwa kana achiri kushandisa blade imwechete, asi wedzera maitiro ekucheka kusvika pamwero wakakodzera."

Kuti uvhare huwandu hwakakura hwekugadzirisa, PCBN blade mamakisi ari kuwedzera. Magiredhi ekuoma kwepamusoro anobvumira kukurumidza kucheka kumhanya, nepo mamakisi ane kuoma kuri nani anogona kushandiswa munzvimbo dzisina kugadzikana dzekugadzirisa. Kune kuenderera kana kukanganiswa kucheka, akasiyana PCBN yekuisa mamakisi anogona zvakare kushandiswa. Sumitomo Electric's Maton yakaratidza kuti nekuda kwehunyoro hwePCBN maturusi, inopinza yekucheka mipendero inowanzoita chipping kana machining simbi yakaoma. "Tinofanirwa kuchengetedza mupendero wekucheka, kunyanya mukukanganisika kucheka, mupendero wekucheka unofanirwa kugadzirirwa kupfuura mukuramba uchicheka, uye kona yekucheka inofanira kunge yakakura."

Iskar' ichangobva kugadzirwa IB10H uye IB20H mamakisi inowedzera kuwedzera Groove Turn PCBN chigadzirwa mutsara. IB10H igiredhi rakanaka-grained PCBN yepakati nepamusoro-soro inoenderera mberi yekucheka kwesimbi yakaoma; nepo IB20H iine yakanaka uye yepakati saizi yezviyo PCBN tsanga, ichipa kupfeka kwakanaka kuramba uye kukanganisa kupikisa. Chiyero chinogona kumira kuomarara mamiriro esimbi yakaomeswa yakakanganiswa kucheka. Iyo yakajairwa kutadza maitiro ePCBN chishandiso inofanira kunge iri yekucheka mupendero inopera kwete kungoerekana yatsemuka kana kuputika.

Iyo BNC30G yakavharwa PCBN giredhi yakaunzwa neSumitomo Electric inoshandiswa kuvhiringika grooving yesimbi yakaoma workpiece. Kuti irambe ichienderera mberi, kambani inokurudzira BN250 yayo yepasirese blade giredhi. Maton akati, "Kana uchicheka uchienderera, blade inochekwa kwenguva yakareba, izvo zvinogadzira kupisa kwakawanda. Naizvozvo, zvinodikanwa kushandisa blade ine shongedzo yakanaka yekupfeka. Panyaya yepakati pepakati, blade inoramba ichipinda uye ichibuda kucheka. Inowedzera kuwedzeredza pamuromo. Naizvozvo, zvinodikanwa kushandisa blade uye blade inogona kumira zvakanaka, inopindirana neinopindirana neyakaomeswa. inobatsirawo kuwedzera hupenyu hwekushandisa."

Pasinei nemhando yegroove iri kugadzirwa, maworkshop aimbovimba nekukuya kuti apedze simbi dzakaomeswa zvikamu zvinogona kushandurwa kuita grooving nePCBN maturusi ekuwedzera chibereko. Hard grooving inogona kuwana dimensional kurongeka kuenzaniswa nekukuya, uku ichideredza zvakanyanya nguva yekugadzira.