Folding Paper Boxes For Facial Mask Design of three-dimensional printing

Folding Paper Boxes For Facial Mask Design of three-dimensional printing

 

1. Kev sib raug zoo ntawm kab sib nrug (p), thickness (d) thiab kev soj ntsuam nrug (D)

Vim muaj kev cuam tshuam ntawm tib neeg lub qhov muag daws teeb meem, peb tuaj yeem paub qhov txawv ntawm cov khoom nyob ze, thiab lub peev xwm los txheeb xyuas cov ntsiab lus ntawm cov khoom nyob deb yuav poob ntau heev. Rau qhov raster ntawm cov duab tso suab, yog tias peb tuaj yeem paub qhov txawv ntawm raster kem iav, nws yuav cuam tshuam rau peb qhov kev paub pom thiab cuam tshuam rau kev ua haujlwm ntawm cov duab tso suab. Thaum lub thickness yog tas mus li, qhov txo ntawm kab sib nrug yuav ua rau kom qhov kev soj ntsuam nrug. Yog li ntawd, peb tuaj yeem tsis tsuas yog hloov cov kab sib nrug, tab sis kuj xav txog qhov thickness. Thaum lub grating phaj thickness yog txo nyob rau hauv ib tug tshwj xeeb kab sib nrug, qhov kev soj ntsuam nrug yuav me me. Yog li ntawd, lub grating phaj rau kev soj ntsuam ze yuav tsum nyias thiab ntom. Rau lub phaj raster siv rau kev soj ntsuam tej thaj chaw deb, qee cov ntsiab lus ntawm cov duab kos ploj thaum daim phiaj sib nrug me dhau, tab sis qhov kev soj ntsuam yuav raug cuam tshuam. Ib yam li ntawd, txhawm rau ua kom tau raws li qhov yuav tsum tau muaj ntawm daim phiaj dav dav, lub thickness ntawm grating phaj yuav tsum tau nce. Yog li ntawd, lub grating phaj siv rau kev soj ntsuam tej thaj chaw deb yuav tsum tuab thiab sparse.

 

Txhawm rau ua kom tiav, hauv kev tsim cov phaj grating, nws yog ib qho tsim nyog yuav tsum tau ua ntej txiav txim siab qhov kev ncua deb ntawm grating raws li qhov yuav tsum tau soj ntsuam, thiab tom qab ntawd txiav txim siab lub thickness ntawm cov grating raws li kev soj ntsuam nrug thiab grating nrug.

 

2. Parameter tsom xam

Cov saum toj no yog soj ntsuam los ntawm kev sib raug zoo ntawm cov tsis, thiab cov hauv qab no yog soj ntsuam los ntawm qhov cuam tshuam ntawm parameter xaiv ntawm cov duab nyhuv.

 

① Tus naj npawb ntawm cov kab grating (LR)
Tus naj npawb ntawm cov kab grating yog tus naj npawb ntawm cov kab tuav ib nti thiab yog qhov sib txuam ntawm qhov grating nrug p. Tus naj npawb ntawm cov kab hauv grating yog qhia raws li LPI, uas yog tus naj npawb ntawm cov iav cylindrical hauv 1 nti. Feem ntau muaj grating haum rau luam ntawv 75LPI, 100LPI, 120LPI, 150LPI thiab hais txog.

 

Tus naj npawb ntawm cov kab raster txiav txim siab qhov tseeb ntawm cov duab tso suab thiab txwv qhov kev daws teeb meem ntawm daim duab raster. Qhov siab dua tus lej ntawm raster, qhov siab dua qhov kev daws teeb meem ntawm cov duab raster yog xav tau, thiab qhov tseeb ntawm cov duab peb sab uas tsim tawm yuav siab dua. Yog tias tus naj npawb ntawm cov kab ntawm cov grating qis dua, qhov kev daws teeb meem ntawm cov duab grating tsis siab dhau, thiab qhov tseeb ntawm qhov kawg ntawm peb-dimensional duab yog qhov tsawg. Qhov siab dua qhov kev daws teeb meem ntawm cov duab raster, qhov siab dua qhov yuav tsum tau ua rau nws cov khoom tso zis ntau dua, thiab cov nqi tso tawm ntuj ntau dua. Yog li ntawd, thaum xaiv tus naj npawb ntawm grating phaj kab, nws yuav tsum tau ua raws li qhov tseeb qhov xwm txheej, thiab cov nqi tsim khoom yuav tsum tau khaws cia rau hauv qhov tsim nyog thaum ua tau raws li qhov yuav tsum tau ua.

 

Tib neeg lub qhov muag qhov kev daws teeb meem ntawm cov ntsiab lus yog txwv los ntawm kev soj ntsuam qhov deb, yog li hauv kev tsim khoom tiag tiag, tus naj npawb ntawm cov kab ntawm cov grating yuav tsum raug xaiv raws li kev soj ntsuam deb. Lub phaj grating nrog tus lej xov tooj siab yuav tsum raug xaiv rau kev soj ntsuam ze, thiab cov phaj grating nrog cov kab tuab yuav tsum raug xaiv rau kev soj ntsuam deb.

 

Feem ntau, thaum qhov kev soj ntsuam deb tsawg dua 80cm, lub phaj grating ntawm 75LPI ~ 90LPI yuav tsum raug xaiv, thiab cov phaj grating yog thinner nyob rau lub sijhawm no. Thaum qhov kev soj ntsuam deb tsawg dua 50cm, 75LPI ~ 150LPI yuav tsum raug xaiv. Tsis tas li ntawd, qhov kev xaiv ntawm kab xov tooj ntawm grating kuj cuam tshuam los ntawm qhov loj ntawm daim duab. Thaum cov duab hom tsawg dua A5, cov phaj grating saum 75LPI yog siv, thiab cov duab peb sab uas tsim tawm lub sijhawm no yog qhov muag heev thiab muag muag.

 

② Saib lub kaum sab xis (φ)
Lub kaum sab xis ntawm saib yog hais txog lub kaum sab xis siab tshaj plaws uas tuaj yeem tso cai thaum tsim cov duab lossis saib cov duab. Qhov me dua lub kaum sab xis ntawm kev pom, lub sharper cov kev hloov nyob rau hauv daim duab. Yog li ntawd, lub phaj raster nrog lub kaum sab xis me me tuaj yeem ua qhov cuam tshuam peb-seem tau zoo thiab zoo heev, thiab lub phaj raster nrog lub kaum sab xis loj ntawm kev pom yog tsuas yog siv los ua animation, transformation thiab lwm yam teebmeem.

 

③ Kev xa tawm (τ)
Lub transmittance yog siv los piav qhia txog qhov pom tseeb ntawm cov grating, uas yog txiav txim siab los ntawm cov khoom siv grating thiab kev siv thev naus laus zis. Qhov siab dua qhov transmittance, qhov zoo dua nws cov pob tshab. Txij li thaum lub stereogram peb tau tham txog yog rov ua dua los ntawm refraction ntawm lub phaj grating, lub pob tshab ntawm cov phaj grating yuav cuam tshuam ncaj qha rau kev ua haujlwm ntawm cov duab tso suab. Yog tias qhov transmittance siab, qhov poob ntawm cov duab cov ntaub ntawv yog tsawg dua tom qab lub refraction ntawm grating phaj, thiab qhov ci ntawm cov duab reconstructed yuav muaj zog dua. Ntawm qhov tsis sib xws, yog tias qhov kev xa tawm tsawg dhau, cov ntaub ntawv duab yuav poob ntau dua tom qab raug refracted los ntawm cov phaj grating, uas yuav cuam tshuam rau qhov zoo thiab ci ntsa iab ntawm cov duab tsim dua tshiab. Yog li ntawd, sim xaiv cov khoom uas muaj kev xa tawm siab los ua cov phaj grating.

 

④ Refractive index (n)
Lub refractive index yog txiav txim los ntawm cov khoom grating nws tus kheej. Nyob rau hauv qee qhov xwm txheej, lub phaj grating nrog lub siab refractive Performance index muaj lub kaum sab xis loj dua θ1, thiab cov duab sib cais yog qhov zoo.

 

3. Ntau lawm txoj kev ntawm raster duab

Feem ntau, muaj peb txoj hauv kev los ua cov duab raster: stereo photography, computer generation, image processing software processing.

 

① stereophotography
Stereophotography yog ib hom kev tsim duab raster ib txwm muaj, tus yuam sij rau kev ua haujlwm yog coj cov duab stereoscopic, thiab cov txheej txheem, qhov deb, Lub kaum sab xis, qhov chaw nruab nrab thiab lwm yam yuav tsum tau muab xam kom raug ua ntej tua. Nws muab faib rau hauv txoj kev ncaj nraim thiab txoj kev tsis ncaj. Txoj kev ncaj nraim yog tso lub cylindrical lens grating phaj nyob rau hauv pem hauv ntej ntawm lub photoreceptor, txav lub koob yees duab nyob rau hauv ib tug tej thaj chaw ntawm saib, thiab tua cov kev kawm tsis tu ncua; Txoj cai tsis ncaj yog coj ntau dua ob daim duab ntawm ib qho chaw thiab tom qab ntawd muab lawv ua kom raug rau hauv ib qho. Thaum cov duab raster yog tsim los ntawm stereophotography, cov ntsiab lus ntawm cov duab tau raug muab tso rau saum npoo ntawm cov khoom siv photosensitive los ntawm raster, thiab lub suab ntawm lub raster fringe sib phim qhov dav ntawm cov duab cov ntsiab lus, yog li nws yog qhov tseeb heev. Qhov tshwm sim stereoscopic duab muaj cov nyhuv stereoscopic zoo. Txawm li cas los xij, vim tias txoj kev stereoscopic xav tau cov cuab yeej tshwj xeeb, thiab kev ua haujlwm muaj teeb meem ntau dua, qhov kev siv ntawm txoj kev no muaj qee qhov kev txwv, yog li muaj qee qhov kev siv ntawm txoj kev no.

 

② Kev tsim kho tshuab computer
Txoj kev no yog ua raws li lub hauv paus ntsiab lus ntawm cov duab raster, siv lub khoos phis tawj siv cov txheej txheem sib txuas, txhua tus ncej hauv cov duab kab ke raug txiav mus rau hauv cov duab kab ntsug ntsug thiab tom qab ntawd sib txuas ua ke hauv kev txiav txim, thiab tom qab ntawd compressed los tsim cov duab raster zaum kawg. Txoj kev no tsis xav tau cov cuab yeej tshwj xeeb tua, thiab kev ua haujlwm yooj yim. Cov duab raster tuaj yeem raug tsim los ntawm kev siv cov duab software xws li Photoshop tom qab qee qhov kev ua cov duab zoo tib yam. Yog li ntawd, nws tau siv dav.

 

③ Duab ua software ua txoj kev
Txoj kev no siv cov duab ua software xws li Photoshop rau manually segment txhua thav duab hauv cov duab sib lawv liag. Tom qab ntawd collage cov duab raster xav tau. Txawm hais tias lub hauv paus ntsiab lus ntawm kev siv txoj kev no yooj yim, nws muaj teeb meem ntau dua rau kev khiav lag luam thiab yuav tsum muaj qee yam kev txawj ntse. Thiab kev siv Photoshop cov duab ua software rau cov duab synthesis, cov duab cov ntsiab lus ntawm qhov kev hloov pauv tsis yog qhov yuav tsum tau ua tiag tiag ntawm kev teeb tsa dislocation, yog li feem ntau cov duab hluavtaws yuav tshwm sim pom tseeb sawtooth tshwm sim, nyob rau hauv lub amplification ntawm lub grating yuav tiag. cuam ​​tshuam qhov zoo ntawm lub tso suab duab.

 

Los ntawm kev txheeb xyuas thiab kev sib piv ntawm cov saum toj no peb raster duab tiam txoj kev, peb ntseeg hais tias lub computer tiam yog ib txoj kev ua tau ntau dua, yog li peb lub tuam txhab tsim nws tus kheej peb-dimensional tsim software nyob rau hauv lub hauv paus ntawm combining qhov zoo ntawm zoo xws li software nyob rau hauv lub lag luam. .