Cov ntsiab lus ntawm yim txheej txheem ntawm cov xov koj yuav tsum paub thaum machining.
.Lo lus lus Askiv sib thooj rau Screw yog Screw. Lub ntsiab lus ntawm lo lus no tau hloov ntau ntau hauv ntau pua xyoo dhau los. Tsawg kawg hauv xyoo 1725, nws txhais tau tias "kev sib raug zoo".
Daim ntawv thov ntawm txoj cai xov tuaj yeem taug qab rov qab mus rau lub tshuab nqa dej uas tsim los ntawm Greek kws tshawb fawb Archimedes hauv 220 BC.
Nyob rau hauv lub xyoo pua 4th AD, lub Mediterranean lub teb chaws pib siv lub hauv paus ntsiab lus ntawm bolts thiab ceev rau cov presses siv nyob rau hauv winemaking. Thaum lub sij hawm ntawd, cov xov sab nraud tau raug mob nrog txoj hlua mus rau ib lub cylindrical bar thiab ces carved raws li cov cim no, thaum cov xov sab hauv feem ntau tsim los ntawm hammering cov xov sab nraud nrog cov khoom softer.
Nyob ib ncig ntawm 1500, nyob rau hauv daim duab kos duab ntawm cov xov ua cov cuab yeej kos los ntawm Italian Leonardo da Vinci, muaj ib lub tswv yim ntawm kev siv tus poj niam Screw thiab kev sib pauv iav los ua cov xov nrog sib txawv pitches. Txij thaum ntawd los, txoj kev ntawm mechanically txiav threads tau tsim nyob rau hauv European watchmaking kev lag luam.
Xyoo 1760, cov kwv tij British J. Wyatt thiab W. Wyatt tau txais daim ntawv pov thawj rau kev txiav ntoo screws nrog ib qho khoom siv tshwj xeeb. Xyoo 1778, British J. Ramsden ib zaug tau tsim cov xov-txiav cov cuab yeej uas tau tsav los ntawm tus cab iav khub, uas tuaj yeem ua cov xov ntev nrog kev ua haujlwm siab. Xyoo 1797, tus txiv neej Askiv H. Maudsley tau siv tus poj niam Screw thiab pauv cov iav los tig hlau xov ntawm cov pitches sib txawv ntawm nws lub tshuab dhos txhim kho, uas tau tso thawj txoj hauv kev ntawm kev xa xov.
Nyob rau xyoo 1820, Maudsley tau tsim thawj cov kais dej thiab tuag rau threading.
Thaum pib ntawm lub xyoo pua 20th, txoj kev loj hlob ntawm kev lag luam tsheb txuas ntxiv txhawb cov txheej txheem ntawm cov xov thiab kev txhim kho ntawm ntau yam kev ua haujlwm zoo thiab ua tau zoo. Ntau yam tsis siv neeg qhib tuag hau thiab tsis siv neeg shrinking kais tau tsim ib qho tom qab, thiab xov milling pib siv.
Nyob rau hauv thaum ntxov 1930s, xov sib tsoo tshwm sim.
Txawm hais tias cov xov dov tshuab tau patented nyob rau hauv thaum ntxov 19th caug xyoo, vim yog qhov nyuaj ntawm pwm manufacturing, txoj kev loj hlob tau ntev mus txog rau thaum Tsov Rog Thoob Ntiaj Teb thib Ob (1942-1945) vim xav tau kev tsim riam phom thiab kev tsim cov xov sib tsoo tshuab. Qhov teeb meem precision ntawm pwm raug tsim tau sai heev.CNC tig qhov
Cov xov yog feem ntau muab faib rau hauv kev sib txuas xov thiab kis xov.
Lub hauv paus txheej txheem rau kev sib txuas xov yog tapping, threading, threading, xov dov, xov dov, thiab lwm yam.
Cov txheej txheem hauv nruab nrab rau kev xa xov xov yog ntxhib thiab zoo tig --- sib tsoo, nplawm milling --- ntxhib thiab zoo tig, thiab lwm yam.
Thawj qeb yog xov-txiav
Nws feem ntau yog hais txog machining workpiece threads nrog kev sib sau los yog cov cuab yeej abrasive, feem ntau suav nrog kev xa, milling, tapping thiab xov sib tsoo, sib tsoo, thiab whirling txiav. Thaum tig, milling, thiab sib tsoo threads, tsav saw ntawm lub tshuab cuab yeej ua kom paub meej tias lub cuab yeej tig, milling cutter, los yog sib tsoo lub log txav tau meej thiab sib npaug ib qho txhuas raws li qhov axis ntawm lub workpiece rau txhua lub kiv puag ncig ntawm lub workpiece. Thaum tapping lossis threading, lub cuab yeej (kais lossis tuag) thiab lub workpiece tig txheeb ze rau ib leeg, thiab cov xov uas dhau los ua ke coj cov cuab yeej (lossis workpiece) txav mus rau axially.
1. Xov tig
Xov tig ntawm lub tshuab dhos tuaj yeem ua tiav nrog cov cuab yeej tig los yog xov zuag. Tig threads nrog kev sib sau cov cuab yeej yog ib txoj hauv kev rau ib qho thiab cov khoom me me ntawm threaded workpieces vim cov cuab yeej yooj yim; tig threads nrog ib tug xov combing cuab tam muaj ntau lawm efficiency, tab sis lub cuab tam qauv yog complex, tsuas yog haum rau nruab nrab thiab loj batch ntau lawm. Lawv tig luv xov workpieces nrog zoo suab. Lub suab raug ntawm cov tshuab dhos zoo tib yam rau kev xa cov xov trapezoidal feem ntau tsuas yog ncav cuag 8 txog 9 qib (JB2886-81, tib yam hauv qab no); machining threads ntawm tshwj xeeb xov lathes tuaj yeem txhim kho cov khoom tsim tau lossis raug.
2. Xov milling
Kuv tau milling nrog ib tug disc los yog zuag cutter ntawm ib tug xov zeb.
Disc milling cutters yog tsuas yog siv rau milling trapezoidal lwm threads ntawm workpieces xws li screws thiab worms comb-shaped milling cutter yog siv rau milling sab hauv thiab sab nraud cov xov thiab tapered threads. Txij li thaum nws yog milled nrog ntau cov hniav milling cutter thiab qhov ntev ntawm nws qhov chaw ua hauj lwm yog ntau dua qhov ntev ntawm cov xov, lub workpiece tsuas yog yuav tsum tau tig 1.25 mus rau 1.5 lem kom ua tiav thiab ua tiav nrog cov khoom lag luam siab. Qhov tseeb ntawm cov xov milling feem ntau tuaj yeem ncav cuag 8 txog 9 qib, thiab qhov roughness yog R5 txog 0.63 microns. Txoj kev no yog tsim rau loj-tsim threaded workpieces ntawm dav precision los yog roughing ua ntej sib tsoo.
Xov milling cutter rau machining internal threads
3. Xov sib tsoo
Nws yog tsuas yog siv rau cov txheej txheem precision threads ntawm hardened workpieces ntawm xov-sib tsoo tshuab. Cov duab ntawm tus ntoo khaub lig-section ntawm kev sib tsoo log tuaj yeem muab faib ua ob hom: ib leeg-kab sib tsoo lub log thiab ntau txoj kab sib tsoo. Lub suab raug ua tiav los ntawm ib kab sib tsoo lub log sib tsoo yog 5 txog 6 qib, thiab qhov roughness yog R1.25 txog 0.08 microns, uas yooj yim dua rau kev sib tsoo log hnav. Txoj kev no yog tsim rau kev sib tsoo precision screws, xov gauges, worms, me me ntawm threaded workpieces, thiab nyem sib tsoo precision hobs. Multi-line sib tsoo log sib tsoo yog muab faib ua longitudinal thiab plunge sib tsoo txoj kev. Nyob rau hauv txoj kev sib tsoo longitudinal, qhov dav ntawm kev sib tsoo lub log yog me dua qhov ntev ntawm cov xov yuav tsum tau hauv av, thiab lub log sib tsoo txav mus rau longitudinally ib zaug los yog ob peb zaug kom zom cov xov mus rau qhov kawg loj. Qhov dav ntawm kev sib tsoo lub log ntawm txoj kev sib tsoo plunge yog qhov loj dua qhov ntev ntawm cov xov yuav hauv av. Kev sib tsoo lub log yog txiav radially rau hauv qhov chaw ntawm lub workpiece, thiab lub workpiece tuaj yeem ua rau hauv av zoo tom qab txog 1.25 revolutions. Cov khoom tsim tau siab, tab sis qhov tseeb yog me ntsis qis, thiab kev sib tsoo log hnav yog qhov nyuaj dua. Plunge sib tsoo yog tsim rau nyem sib tsoo loj batch ntawm kais dej thiab rau kev sib tsoo tej threads rau fastening.aluminium extrusion qhov chaw
4. Xov sib tsoo
Cov txiv ntoo-hom lossis ntsia hlau-hom xov grinder yog ua los ntawm cov ntaub ntawv mos xws li cam khwb cia hlau, thiab qhov chaw uas cov xov muaj qhov yuam kev ntawm lub workpiece raug xa mus rau pem hauv ntej thiab thim rov qab sib tsoo los txhim kho lub suab raug. Hardened internal threads feem ntau yog hauv av kom tshem tawm deformation thiab txhim kho qhov tseeb.
5. Tapping thiab threading
Tapping
Nws yog los ntsia hlau tus kais dej rau hauv lub qhov pre-drilled hauv qab ntawm lub workpiece nrog ib qho tshwj xeeb torque los ua cov xov sab hauv.
Xov
Txiav cov xov sab nraud ntawm lub bar (los yog yeeb nkab) workpiece nrog tuag. Lub machining raug ntawm tapping los yog threading nyob ntawm qhov tseeb ntawm tus kais los yog tuag.aluminium qhov chaw
Txawm hais tias muaj ntau txoj hauv kev los ua cov xov sab hauv thiab sab nraud, cov xov me me hauv cov xov tsuas tuaj yeem ua tiav los ntawm cov kais dej. Tapping thiab threading tuaj yeem ua tau los ntawm tes, nrog rau cov lathes, laum presses, tapping machine, thiab threading machines.
Qhov thib ob qeb: Xov dov
Cov txheej txheem ntawm plastically deforming lub workpiece nrog ib tug sib sau dov tuag kom tau ib tug xov. Xov dov yog feem ntau ua rau ntawm lub xov dov tshuab los yog lub tshuab dhos tsis siv neeg nrog rau qhov tsis siv neeg qhib thiab kaw Xov dov lub taub hau, ib qho xov sab nraud rau kev tsim ntau ntawm cov txheej txheem fasteners, thiab lwm yam threaded couplings. Sab nraud txoj kab uas hla ntawm cov xov dov yog Threadally tsis ntau tshaj 25 hli, qhov ntev tsis ntau tshaj 100 hli, cov xov raug tuaj yeem ncav cuag qib 2 (GB197-63), thiab txoj kab uas hla ntawm qhov khoob siv yog kwv yees sib npaug ntawm lub suab kab. ntawm cov txheej txheem txheej txheem. RThread feem ntau tsis tuaj yeem ua cov xov sab hauv, tab sis rau cov khoom ua haujlwm nrog cov ntaub ntawv softer, lub grooveless extrusion kais tuaj yeem siv los txias-extrude internal threads (qhov siab tshaj plaws txoj kab uas hla tuaj yeem ncav cuag li 30 mm). Lub hauv paus ntsiab lus ua haujlwm zoo ib yam li tapping. Lub torque yuav tsum tau rau txias extrusion ntawm cov xov sab hauv yog hais txog 1 lub sij hawm loj dua li ntawm tapping, thiab lub machining raug thiab nto zoo yog me ntsis siab dua cov tapping.
Qhov zoo ntawm Thread Rolling:
① Lub nto roughness yog me dua li ntawm tig, milling, thiab sib tsoo;
②Qhov saum npoo ntawm Xov afThreadlling tuaj yeem txhim kho lub zog thiab hardness vim kev ua haujlwm txias txias;
③ Cov khoom siv yog siab;
④ Cov khoom tsim tau yog ob npaug piv rau kev txiav, thiab nws yooj yim rau kev paub automation;
⑤ Lub neej ntawm dov tuag yog ntev heev. Txawm li cas los xij, dov Xov reThread tias qhov hardness ntawm cov khoom siv ua haujlwm tsis tshaj HRC40; qhov tseeb qhov tseeb ntawm qhov khoob yog siab; qhov precision thiab hardness ntawm dov tuag kuj siab, thiab nws yog ib qho nyuaj rau tsim cov tuag; nws tsis haum rau dov threads nrog asymmetric hniav zoo li.
Raws li qhov sib txawv dov tuag, Xov tuaj yeem muab faib ua ob hom: Xov dov thiab Threadthreadd
6. Xov dov
Ob lub xov dov daim hlau nrog threaded hniav duab yog teem opposite ib leeg nrog ib tug 1/2 suab; cov phaj zoo li qub yog tsau, thiab cov phaj txav txav mus rau hauv ib qho reciprocating linear motion parallel mus rau lub phaj zoo li qub. Thaum lub workpiece raug xa mus rau ntawm ob daim hlau, lub phaj txav txav mus rau pem hauv ntej thiab rub lub workpiece rau plastically deform lub nto los ua ib tug xov (Daim duab 6 [Screwing]).
7. Xov dov
Muaj peb hom radial Xov roThread, tangential Xov roThread, thiab dov taub hau xov dov.
① Radial Threathreadad 2 (los yog 3) xov dov lub log nrog xov profiles raug ntsia rau ntawm kev sib txuas ua ke; lub workpiece yog muab tso rau ntawm kev txhawb nqa ntawm ob lub log, thiab ob lub log tig nyob rau hauv tib txoj kev thiab nyob rau tib lub ceev (Daim duab 7). [Radial Thread rolling]), ib qho ntawm cov kev sib tw, kuj tseem ua haujlwm radial pub mov. Cov xov dov lub log tig lub workpiece, thiab qhov saum npoo yog radially extruded los ua threads. Rau qee cov hlau lead uas tsis tas yuav tsum muaj qhov siab, ib txoj kev zoo sib xws kuj tuaj yeem siv rau yob txoj kev.
②Tangential Xov roThread Kuj hu ua planetary Thread roThread, cov cuab yeej dov muaj ib lub hauv paus xov dov lub log thiab peb taag arc-zoo li tus xov daim hlau (Fig. 8 [Tangential Xov dov]). Lub workpiece tuaj yeem noj tsis tu ncua thaum Xov Xov, yog li cov khoom tsim tau siab dua li ntawm Xov roThreadand radial Xov xov
③ Xov rethreaded: Nws yog nqa tawm ntawm lub tshuab dhos tsis siv neeg thiab feem ntau yog siv los ua cov xov luv luv ntawm lub workpiece. Muaj 3 mus rau 4 xov dov lub log sib npaug sib npaug rau sab nraud ntawm lub workpiece hauv lub taub hau dov (Daim duab 9 [Xov rethreaded dov]). Thaum lub sij hawm xov dov, lub workpiece tig, thiab lub taub hau dov axially dov lub workpiece tawm ntawm Xov.
Xov threading
Kev ua cov xov zoo tib yam feem ntau siv cov chaw machining lossis tapping cov cuab yeej thiab cov cuab yeej; Qee zaum, phau ntawv tapping kuj ua tau. Txawm li cas los xij, nyob rau qee qhov tshwj xeeb, cov txheej txheem saum toj no tsis yooj yim kom tau txais txiaj ntsig zoo, xws li xav tau tshuab xov tom qab kev kho cua sov ntawm qhov chaw vim tsis saib xyuas lossis vim tsis muaj cov khoom siv, xws li yuav tsum tau coj mus rhaub ncaj qha rau ntawm carbide workpieces. . Lub sijhawm no, nws yog ib qho tsim nyog yuav tsum xav txog cov txheej txheem ua pEDM.
Piv nrog rau txoj kev machining, cov txheej txheem EDM yog tib yam: lub qhov hauv qab yuav tsum tau drilled ua ntej, thiab txoj kab uas hla ntawm lub qhov hauv qab yuav tsum tau txiav txim siab raws li kev ua haujlwm. Cov electrode yuav tsum tau muab machined rau hauv cov xov zoo, thiab cov electrode yuav tsum tau tig thaum lub sij hawm machining txheej txheem.
Anebon Hlau Khoom Limited tuaj yeem muab CNC Machining, Tuag Casting, Sheet Hlau Fabrication kev pabcuam, thov koj xav tiv tauj peb.
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Lub sij hawm xa tuaj: Plaub Hlis-15-2022