Honing Principple Thiab Xaiv Cov Txheej Txheem Txheej Txheem

1. Taw qhia

Nyob rau hauv honing, kev xaiv ntawm honing txheej txheem tsis muaj kev cuam tshuam zoo rau qhov raug ntawm lub tshuab qhov, nto roughness, machining efficiency thiab kev pab cuam lub neej ntawm honing oilstone.

2. Honing txoj cai

Honing yog siv lub hauv paus ntsiab lus ntawm kev sib tsoo ntawm peb daim hlau tiaj tus los ua kom tiav qhov chaw. Nyob rau hauv kev sib tsoo, txiav nto ntawm honing oilstone thiab nto ntawm machined qhov chaw yog suav tias yog ib tug txheej txheem ntawm kev sib nrig sib trimming ntawm pav ca daim hlau.

3. Hnav khaub ncaws ntawm honing oilstone

Vim yog kev tsim cov khoom tsis raug ntawm honing oilstone, oilstone lub rooj thiab sib tsoo lub taub hau lub cev, nws yog tsis yooj yim sua rau lub honing oilstone ntawm honing lub taub hau los tsim ib tug normalized discontinuous cylindrical nto tom qab sib dhos, thiaj li ua kom muaj kev sib cuag zoo ntawm honing oilstone thiab machined nto. Txawm hais tias honing oilstone tuaj yeem txiav nrog cov khoom ua haujlwm hauv cov txheej txheem honing, qhov sib tsoo ntawm cov khoom siv me me, yog li nws tsis tuaj yeem tau txais kev txiav txaus hauv thawj zaug honing txheej txheem. Tshwj xeeb tshaj yog cov honing oilstone nrog superhard abrasive tsis tuaj yeem txiav tag nrho vim nws hnav tsis kam. Yog li ntawd, nws yog tsis yooj yim sua kom tau ib tug zoo tagnrho machined nto nyob rau hauv machining, thiab qhov tseeb tsis tuaj yeem lav. Yog li ntawd, thaum siv lub pob zeb honing tshiab, lub pob zeb honing yuav tsum tau kho (tseem hu ua rounding) ua ntej machining. Kev hnav khaub ncaws zoo tib yam honing oilstone yog ncaj qha rau nruab lub honing oilstone ntawm lub taub hau sib tsoo siv thiab coj mus rau lub cylindrical grinder rau rounding, uas yog qhov zoo tshaj plaws. Txawm li cas los xij, vim yog cov qauv ntawm qee lub taub hau sib tsoo thiab lwm yam laj thawj, nws yog ib qho tsim nyog yuav tsum siv cov khoom siv tshwj xeeb los txiav lawv cov kab uas hla nrog cov sib tsoo ntawm lub cylindrical grinder. Yog hais tias qhov yuav tsum tau ntawm honing workpiece yog tsawg, lub honing lub taub hau yog floating kev twb kev txuas, los yog lub workpiece qhov nrog pov tseg los yog loj machining nyiaj yuav siv tau ncaj qha mus kho lub rounding ntawm lub honing tshuab cuab tam siv. Kev hnav khaub ncaws ntawm superhard honing oilstone tuaj yeem nqa tawm ntawm lub cylindrical grinder nrog carbonized silica xuab zeb log. Kev sib tsoo lub log ceev yog 18-25m / s, kev sib tsoo lub taub hau ceev yog 1-3m / min, thiab pub qhov tob yog feem ntau 0.02-0.04mm / stroke rau kev sib tsoo thiab 0.01mm / stroke rau xov. Nyob rau tib lub sij hawm, ib tug loj npaum li cas ntawm coolant yuav tsum tau.

4. Nthuav siab expansion pub daim ntawv

Nyob rau hauv tas li lub siab expansion thiab pub, txawm hais tias lub honing lub taub hau expansion thiab contraction mechanism presses lub qhov phab ntsa ntawm workpiece nrog ib tug tas li honing oilstone ua hauj lwm siab, nyob rau hauv lub sib tsoo, nrog rau lub sij hawm nce, ntau yam tsis raug txiav nrog ib tug tas li tus nqi. , tab sis tus nqi ntawm cov hlau sib tsoo thiab honing oilstone sib tsoo poob maj mam txo nrog qhov nce ntawm lub sij hawm honing, Lub nto zoo ua du nrog qhov nce ntawm honing lub sij hawm. Yog vim li cas rau qhov xwm txheej no yog tias honing thiab txiav yog nyob rau hauv kev sib cuag saum npoo, thiab lub siab tas li expansion pub muaj zog rov qab. Hauv kev sib tsoo, qhov loj ntawm cov nyiaj txiav yog nyob ntawm cov khoom abrasive thiab lawv cov ntse, nrog rau kev tshem tawm cov khoom abrasive thiab txiav hauv qab sib tsoo.

5. Kev xaiv ntawm honing txheej txheem tsis

5.1 xaiv txiav ceev thiab txiav kev sib tshuam lub kaum sab xis

5.1. 1 ceev thiab txiav hla lub kaum sab xis

Txiav ceev V yog tsim los ntawm kev sib hloov (circumferential) ceev V thiab reciprocating ceev v. Nyob rau hauv tus txheej txheem ntawm honing, raws li ib tug tshwm sim ntawm txiav txav, lub abrasive hais ntawm honing oilstone txiav cross reticulation ntawm lub machined nto, thiab lub kaum sab xis tsim los ntawm reticulation. yog hu ua txiav hla lub kaum sab xis θ . Lub kaum sab xis ntawm qhov nce anilox thiab kab rov tav yog hu ua qhov txiav nce lub kaum sab xis α 1. Lub kaum sab xis tsim los ntawm kev poob anilox thiab kab kab rov tav hu ua txiav lub kaum sab xis α 2.

5.1. 2 Kev suav ntawm honing txiav ceev

Lub honing txiav ceev tuaj yeem xam raws li cov qauv hauv qab no: V rotation=π dn / 1000 (M / min), qhov twg: D - machined txoj kab uas hla mm n - spindle ceev r / min

5.1. 3 Qhov cuam tshuam ntawm kev txiav ceev ntawm txiav kom muaj nuj nqis

Nyob rau hauv honing, txiav ceev muaj me ntsis cuam tshuam rau cov nyiaj txiav (txiav npaum li cas / ua hauj lwm txiav - qhia lub sharpness ntawm honing oilstone). Tsis muaj teeb meem honing castings lossis honing steel qhov chaw, qhov tshwj xeeb txiav nyiaj hloov me ntsis nrog kev hloov ntawm kev txiav ceev.

5.1. 4 Kev cuam tshuam ntawm kev txiav hla lub kaum sab xis ntawm kev txiav nyiaj, honing roj pob zeb hnav tus nqi thiab nto roughness

Nyob rau hauv honing, lub txiav hla lub kaum sab xis muaj kev cuam tshuam zoo rau kev txiav nyiaj, honing roj pob zeb hnav thiab nto roughness. Nrog rau kev nce ntawm kev hla lub kaum sab xis, qhov txo qis ntawm cov pob zeb tshwj xeeb nce. Ntawm chav kawm, lub roughness ntawm machined nto kuj coarsens. Qhov no yog vim hais tias nyob rau hauv cov txheej txheem honing thiab txiav, tuav lub sharpness ntawm honing oilstone nyob ntawm lub machined nto roughness. Tsuas yog txiav tus nqi ntawm cov ntse honing oilstone tuaj yeem txhim kho, thiab cov roj zeb yuav tsum tau hnav yog tias nws yog ntse. Thaum txiav hla lub kaum sab xis yog 0 °, qhov kev ua tau zoo yog tsawg; Thaum lub txiav hla lub kaum sab xis yog 90 °, lub honing oilstone yog hnav zoo heev thiab machined nto roughness yog ntxhib, uas ua rau cov txiav me me. Los ntawm kev sim, thaum txiav hla lub kaum sab xis yog li 45 °, qhov txiav yog qhov loj tshaj plaws. Yog li ntawd, nyob rau hauv honing, txiav hla lub kaum sab xis ntawm 45 ° yuav tsum tau siv los txhim kho cov khoom tsim tau, thiab 20-30 ° tuaj yeem siv rau kev ua tiav. 5.2 ua hauj lwm siab ntawm honing oilstone thiab nws cov cawv

5.2. 1 ua hauj lwm siab ntawm honing oilstone

Lub thiaj li hu ua honing oilstone ua hauj lwm siab yog hais txog lub siab ntawm honing oilstone ntawm lub machined nto - lub siab rau ib chav tsev cheeb tsam. Tsis yog tus nqi ntawm lub tshuab ntsuas lub siab lossis lwm yam kev ntsuas siab. Daim ntawv no tham txog cov cuab yeej honing tshuab nrog tas li siab expansion pub. Kev ua haujlwm siab ntawm honing oilstone tuaj yeem xam raws li cov qauv hauv qab no (tsis hais txog kev sib txhuam thiab lwm yam quab yuam). P=(d2πp / 4Bln) ctg β / 2 qhov p yog qhov ua haujlwm siab ntawm honing oilstone, kgf / cm2 ≈ bar, B yog qhov dav ntawm honing oilstone, MML yog qhov ntev ntawm honing oilstone, mn yog tus naj npawb ntawm honing oilstones

5.2. 2 xaiv kev ua haujlwm siab ntawm honing oilstone

Kev ua haujlwm siab ntawm honing oilstone muaj kev cuam tshuam zoo rau kev ua haujlwm honing, uas cuam tshuam ncaj qha rau kev txiav, honing oilstone hnav poob, workpiece raug thiab roughness. Thaum lub honing ua hauj lwm siab yog loj, honing txiav nqi thiab honing roj pob zeb coj tus nqi yog loj, thiab lub machining raug thiab nto roughness kuj tsis zoo. Thaum lub honing ua hauj lwm siab me me, qhov txiav nqi thiab honing roj zeb sib tsoo poob yog me me, thiab lub machining raug thiab nto roughness yog zoo. Thaum xaiv qhov kev ua haujlwm siab ntawm honing oilstone, ntxiv rau cov xwm txheej saum toj no, nws yuav tsum tau txiav txim siab raws li lub zog ntawm cov cuab yeej siv lub tshuab siv, lub rigidity ntawm honing lub taub hau thiab honing fixture, lub zog ntawm honing oilstone thiab honing; Qhov chaw sib cuag tiag tiag ntawm cov roj zeb thiab cov tshuab ua haujlwm, nrog rau cov khoom siv, qhov loj thiab cov duab ntawm lub workpiece yuav tsum tau txiav txim siab tag nrho. Feem ntau, lub honing oilstone ua hauj lwm siab ntawm ntau lawm honing tshuab yuav raug xaiv raws li lub rooj 1. Rau kho honing tshuab, vim nws tsis muaj zog, lub rigidity ntawm honing lub taub hau thiab fixture yog kuj tsis tshua muaj, thiab kev ua hauj lwm siab ntawm honing oilstone yuav tsum tau. txo, feem ntau 2-5 kgf / cm2.

6. Kev suav thiab kev hloov kho ntawm honing stroke

Yuav kom ua cov qhov nrog tib txoj kab uas hla thiab zoo cylindricity, honing stroke thiab coj overtravel yuav tsum tau kho. Raws li pom nyob rau hauv daim duab 2, yog hais tias lub honing oilstone ntev yog 1, lub qhov ntev yog l, lub stroke ntev yog L1, lub overtravel ntawm lub Upper kawg yog L2 thiab lub overtravel ntawm lub qis kawg yog L2, honing ua hauj lwm stroke ntev yog. xam raws li cov qauv hauv qab no: l = L {{5}} L1 + L2 - l lub me me overtravel L1 thiab L2 ntawm honing oilstone nyob rau hauv lub machined qhov feem ntau 1 / 3-1 / 5 ntawm honing oilstone ntev. Nws muaj feem xyuam rau qhov kev txhawb nqa ntawm lub rooj zaum oilstone ntawm lub taub hau honing, reciprocating tsab ntawv tsa suab ntawm lub tshuab honing, lub sij hawm nyob ntawm ob qho tag nrho, thiab cov khoom thiab cov duab ntawm cov khoom ua tiav. Thaum lub overtravel ntawm ib kawg yog qhov loj, lub workpiece qhov yog ib qho yooj yim los tsim horn lub qhov ncauj zoo: thaum lub overtravel ntawm ib kawg yog me me, lub workpiece qhov yog yooj yim los tsim lub qhov ncauj me me; Yog hais tias tus nqi overtravel ntawm ob kawg yog loj los yog me me, lub workpiece qhov yog ib qho yooj yim los tsim lub duav nruas nruas zoo li: yog hais tias tus overtravel tus nqi ntawm ib kawg yog loj thiab cov overtravel tus nqi ntawm ib kawg yog me me, lub workpiece qhov yog ib qho yooj yim los tsim taper. . Yog li ntawd, tom qab cov cuab yeej kho mob stroke raug xam raws li cov lus qhia saum toj no, nws kuj tseem yuav tsum tau ua qhov kev sim honing, thiab tom qab ntawd kho tus nqi overtravel raws li qhov loj me ntawm qhov ntsuas kom txog thaum nws tsim nyog. Honing yog ib txoj hauv kev uas feem ntau siv rau hauv cov txheej txheem. Txoj kev ua no tau siv dav hauv kev tsim khoom siv tshuab. Los ntawm kev nkag siab txog txoj cai honing thiab kev xaiv cov txheej txheem, nws tuaj yeem pab cov kws tshaj lij hauv tib txoj kev lag luam kom paub cov ntsiab lus tseem ceeb ntawm kev ua cov cuab yeej siv tau zoo thiab nrawm dua, thiab kawm thiab sib tham ua ke hauv kev ua haujlwm yav tom ntej.