Hauv cov chaw tsim khoom niaj hnub no, cov cuab yeej siv tshuab CNC, CNC sib tsoo tshuab, thiab tsib -axis machining chaw yuav luag dhau los ua cov neeg tseem ceeb. Txawm li cas los xij, qhov tseeb txiav txim siab cov ntsiab lus thiab qhov zoo ntawm cov khoom feem ntau yog cov cuab yeej siv tes yooj yim tshaj plaws -ntaub abrasivethiabhoning pob zebs. Lawv pheej yig, tab sis lawv tuaj yeem daws cov teeb meem ntxaws uas cov cuab yeej siv tsis tau, ua rau lawv qhov tseem ceeb "tsis pom riam phom" ntawm txhua tus kws kho tshuab ua haujlwm.
I. Vim li cas daim ntaub abrasive thiab honing pob zeb tseem irreplaceable?
Kev txwv ntawm cov cuab yeej siv tshuab:
Txawm tias muaj - precision CNC machining, cov cuab yeej cim, burrs, thiab cov npoo ntse yuav tseem nyob.
Cov kev sib tw ntawm cov kab noj hniav complex:
Pwm thiab qhov chaw feem ntau muaj qhov sib sib zog nqus grooves thiab cov ces kaum sab hauv uas cov cuab yeej txiav tsis tuaj yeem nkag mus tau tag nrho.
Qhov xav tau ntawm qhov zoo:
Los ntawm cov qhab nia tawm sab laug los ntawm kev siv hluav taws xob tawm mus rau qhov chaw ntxhib tom qab vuam, yuav tsum tau ua kom tiav.
Yog li ntawd, abrasive daim ntaub thiab honing pob zeb yog ib txwm "tiav kov" nyob rau hauv precision machining.
Cov ntsiab lus yooj yim ntawm kev paub yog: daim ntaub abrasive hais txog "surfaces," thiab honing pob zeb hais txog "cov ntsiab lus."
II. daim ntaub abrasive: Kev tshem tawm tau yooj yim thiab loj - kho thaj chaw
Abrasive daim ntaub, tseem hu ua coated abrasive, feem ntau muaj cov ntaub thaub qab, cov nplaum, thiab cov khoom abrasive.
1. Cov yam ntxwv ntawm engineering
Flexibility: Adapts rau qhov nkhaus ntawm lub workpiece, haum rau loj - cheeb tsam sib tsoo.
Dav Grit Range: Coarse grit sandpaper (P40-P120) yog tsim rau kev tshem tawm thiab xeb; nplua grit sandpaper (P400-P2000) tuaj yeem siv rau polishing pretreatment.
Cuttable: tuaj yeem txiav rau hauv ib daim hlab, yob, lossis siv siv kom haum rau qhov chaw ua haujlwm sib txawv.
2. Kev siv ntau
Deburring tom qab machining: Piv txwv li, tom qab tig ncej, daim ntaub abrasive tuaj yeem qhwv ib ncig ntawm lub ncej thiab tig kom tshem tawm cov burrs zoo.
Deg pretreatment: Sandpaper feem ntau yog siv rau kev npaj nto ua ntej pleev xim los yog electroplating los txhim kho adhesion.
Pwm tiav: Siv ua ke nrog cov ntoo lossis hlau strips, nws tuaj yeem ncav cuag rau hauv cov ces kaum thiab cov npoo ntawm pwm kab noj hniav.
Tswv yim: Thaum xuab zeb, tuav ib qho kev taw qhia kom tsis txhob "cross- hatching," tshwj xeeb tshaj yog nyob rau ntawm qhov chaw uas yuav muaj cov khoom zoo nkauj tom ntej los yog txheej txheej.
III. Cov pob zeb ntse ntse: Cov cuab yeej muaj zog rau kev ua kom zoo - tu thiab tswj hauv cheeb tsam.
Lub pob zeb sharpening yog ib qho cuab yeej sib koom ua ke, tsim los ntawm sintering abrasive nplej nrog ib daim ntawv khi.
1. Cov yam ntxwv ntawm engineering
High hardness thiab hnav tsis kam: Ntau haum rau kev sib tsoo zoo thiab meej shaping.
Cov duab sib txawv: Cov duab plaub, daim duab peb sab rods, thiab cylindrical rods muaj rau haum rau txawv geometric nta.
Siv nrog lubricants: Kerosene thiab cov roj sib tsoo feem ntau yog siv los tiv thaiv clogging thiab xyuas kom meej meej.
2. Kev siv ntau
Ntxig ntawm cov cuab yeej txiav cov npoo: Txhim kho lub neej ntev ntawm cov cuab yeej xws li cov cuab yeej tig thiab cov cuab yeej tho txawv.
Kev ua tiav ntawm EDM (Electrical Discharge Machining) cov cim ntawm cov pwm: Tom qab hluav taws xob tso tawm machining, cov pob zeb ntse ntse feem ntau yog siv rau kev sib tsoo mus txog rau theem polishing.
Chamfering ntawm precision qhov chaw: Rau hydraulic valve cores, bushing qhov, thiab lwm yam., sharpening pob zeb yog siv los maj mam refine lub voj voog hloov.
Nco tseg: Tsis txhob "sib tsoo" thaum siv cov pob zeb ntse, txwv tsis pub cov nplej zom yuav khawb cov khoom ua haujlwm.
IV. daim ntaub abrasive vs. honing Pob zeb: Ib qho kev sib piv ntawm cov txheej txheem thiab kev siv
|
Yam khoom |
Abrasive Ntaub |
Honing Pob zeb |
|
Yooj yim |
Kev ua haujlwm siab, haum rau qhov chaw nkhaus thiab loj - thaj chaw ua haujlwm. |
Tsawg, feem ntau yog siv rau hauv cheeb tsam thiab linear nta. |
|
Kev tshem tawm efficiency |
Kev nrawm nrawm, haum rau loj - nplai sib tsoo. |
Slower, haum rau kev tswj kom meej. |
|
Nto zoo |
Nyob ntawm qhov granularity, qhov ntau tuaj yeem loj. |
Stable thiab meej, haum rau zoo machining. |
|
Tej kev siv |
Tshem tawm xeb, deburring, thiab nto priming. |
Tool sharpening thiab pwm kab noj hniav |
|
txoj hauj lwm |
"Rough Kho & Nto Kho" |
"Keeb Kwm Kho & Spot Repair" |
Hauv kev siv tshuab ua haujlwm, cov ntawv xuab zeb feem ntau yog siv ua ntej kom sai kho qhov chaw loj; ces honing pob zeb yog siv los kho cov ntsiab lus thiab cov npoo.
Piv txwv li, ib qho txheej txheem hauv kev lag luam pwm yog:
Hluav taws xob tawm machining → Coarse sandpaper tu → Honing pob zeb zoo xov → Sandpaper / polishing paste polishing
Qhov kev sib xyaw ua ke ntawm cov txheej txheem no yuav luag yog "tus qauv tsis hais" hauv txhua lub tuam txhab pwm.
V. Qhov ntau thiab tsawg mesh thiab sib thooj Roughness Levels
Tus "P" tus naj npawb ntawm cov ntaub abrasive (FEPA tus qauv grit) feem ntau sib raug rau qhov roughness raws li hauv qab no (qhov tseem ceeb ntawm cov qauv):
|
Abrasive grit loj(P) |
Qhov nruab nrab particle loj(μm) |
Machined nto roughnessRau (μm) |
Daim ntawv thov Scenario |
|
P40–P80 |
200–500 |
6.3-12.5 Nws |
Rough sib tsoo, slag tshem tawm, thiab hnyav burr tshem tawm. |
|
P120–P240 |
60–125 |
Ra 3.2–6.3 |
General deburring, priming ua ntej painting. |
|
P400–P800 |
20–35 |
0.8–3.2 hli |
Precision qhov chaw pretreatment, kev hloov pauv nto tiav |
|
P1000–P2000 |
5–15 |
0.2-0.8 hli |
Kev npaj ua ntej polishing, ua ntej txheej txheem ua ntej daim iav tiav. |
Cov tswv yim thiab cov tswv yim: Thaum sanding nrog abrasive daim ntaub, tuav ib qho kev taw qhia kom tsis txhob tsim tus ntoo khaub lig-cov qauv hatching, tshwj xeeb tshaj yog nyob rau ntawm qhov chaw uas yuav tom qab electroplated los yog oxidized.
VI. Ntxoov Pob Zeb: Zoo -tu thiab tswj hauv cheeb tsam
Qhov loj me me ntawm honing pob zeb feem ntau qhia los ntawm '#' cim (raws li JIS lossis ANSI cov qauv), nrog rau ntau yam raws li hauv qab no:
|
Abrasive grit loj (#) |
Qhov nruab nrab particle loj (μm) |
Machined nto roughness Rau (μm) |
Daim ntawv thov Scenario |
|
#120–#220 |
60–125 |
Ra 3.2–6.3 |
Pib ua tiav tom qab hluav taws xob tawm machining. |
|
#320–#400 |
30–45 |
Ib 1.6–3.2 |
Pwm kab noj hniav tiav, txiav ntug kho |
|
#600–#800 |
10–20 |
0.4-1.6 hli |
Chamfering thiab tsim kev hloov chaw rau precision qhov chaw. |
|
#1000–#1200 |
3–8 |
0.1-0.4 hli |
Cov kauj ruam kawg ua ntej polishing, nto tiav. |
Kev Paub Txog Engineer:
Pwm ua tiav feem ntau siv "kev nce qib zuj zus nrog cov pob zeb ntse" txoj kev: # 220 → # 400 → # 800, ua raws li daim ntaub abrasive lossis pob zeb diamond paste polishing.
Tool sharpening feem ntau siv #400–#600 grit sharpening pob zeb, uas yuav tshem tawm me me nicks thaum tuav ib tug ntse ntug.
Abrasive daim ntaub thiab honing pob zeb yog zoo li "manual finishing specialists" nyob rau hauv manufacturing.
Tej zaum lawv yuav zoo li tsis tseem ceeb, tab sis lawv them nyiaj rau qhov muag tsis pom ntawm cov tshuab CNC thiab tiv thaiv qhov kawg ntawm cov khoom.
Rau cov kws kho tshuab, kev siv cov ntaub abrasive thiab honing pob zeb tsis yog tsuas yog "kev txawj ntse," tab sis kuj yog ib qho kev xav ntawm lawv txoj kev xav.
