{"data":{"model":{"id":"188371","slug":"dilensky-sverak","name":"D\u00edlensk\u00fd sv\u011br\u00e1k","authorship":null,"eligibleForNomination":false,"easyprintProjects":[],"eduProject":{"id":"707","subject":{"id":"48","name":"Practical prints","slug":"practical-prints","__typename":"SchoolSubjectType"},"language":{"id":"28","name":"Czech","__typename":"LanguageType"},"timeDifficulty":"MEDIUM_TERM","audienceAge":"ADOLESCENT","complexity":"HARD","equipment":[{"id":"1","name":"3D modeling","__typename":"EquipmentType"},{"id":"3","name":"Fasteners","__typename":"EquipmentType"},{"id":"4","name":"IT classroom","__typename":"EquipmentType"},{"id":"7","name":"Workroom","__typename":"EquipmentType"}],"suitablePrinters":[{"id":"5","name":"Prusa MK3 & MMU2","__typename":"PrinterTypeType"},{"id":"1","name":"Prusa MK3/S/S+","__typename":"PrinterTypeType"},{"id":"14","name":"Prusa MK3S/+ & MMU2S/3","__typename":"PrinterTypeType"}],"organisation":"VO\u0160 a SP\u0160 \u017d\u010f\u00e1r nad S\u00e1zavou","authors":"Vyu\u010duj\u00edc\u00ed: Ing. Jan Straka \r\nNa realizaci projektu se pod\u00edleli \u017e\u00e1ci 2. a 3. Ro\u010dn\u00edk\u016f, obor Technik modelov\u00fdch za\u0159\u00edzen\u00ed a \r\nMechanik-se\u0159izova\u010d.","targetGroupFocus":"

Technicky zam\u011b\u0159en\u00e9 obory, technick\u00e9 \u0161koly, technick\u00e9 krou\u017eky

","knowledgeAndSkills":"

Studenti mus\u00ed ovl\u00e1dat z\u00e1klady modelov\u00e1n\u00ed sou\u010d\u00e1st\u00ed, tvorbu sestav z jednotliv\u00fdch d\u00edl\u016f. My jsme model vytv\u00e1\u0159eli v prost\u0159ed\u00ed Autodesk Inventor. Je nutn\u00e9 ovl\u00e1dat prost\u0159ed\u00ed n\u00e1\u010drtu, v\u010detn\u011b k\u00f3tov\u00e1n\u00ed, vazeb apod. D\u00e1le se zde vyu\u017e\u00edvaj\u00ed funkce jako vysunut\u00ed, rotace, spir\u00e1la, pole a dal\u0161\u00ed. V sestav\u00e1ch se potom vyu\u017eij\u00ed vazby, omezen\u00ed vazeb v ur\u010dit\u00e9m rozsahu, animace vazeb, kontrola koliz\u00ed... Pro samotn\u00fd tisk je zapot\u0159eb\u00ed um\u011bt jednotliv\u00e9 modely vyexportovat ve form\u00e1tu STL a v programu Prusaslicer um\u011bt p\u0159ipravit program pro 3D tisk\u00e1rnu. D\u00e1le je zapot\u0159eb\u00ed um\u011bt ovl\u00e1dat samotnou obsluhu tisk\u00e1rny. V posledn\u00ed \u0159ad\u011b je pot\u0159eba pr\u00e1ce se \u0161roubov\u00e1kem ke smontov\u00e1n\u00ed jednotliv\u00fdch d\u00edl\u016f.

","objectives":"

C\u00edlem cel\u00e9ho projektu bylo v CAD softwaru navrhnout a vyrobit pomoc\u00ed 3D tisku a spojovac\u00edho materi\u00e1lu stoln\u00ed sv\u011br\u00e1k. \u017d\u00e1ci museli zkonstruovat sv\u011br\u00e1k vhodn\u00fdch rozm\u011br\u016f k mini-d\u00edlni\u010dce, kterou jsem zmi\u0148oval v\u00fd\u0161e. Hlavn\u00edm c\u00edlem bylo prohloubit znalosti a dovednosti z\u00edskan\u00e9 v p\u0159edchoz\u00ed v\u00fduce. Museli si vytvo\u0159it 3D modely jednotliv\u00fdch komponent s ohledem na snadn\u00fd tisk, ide\u00e1ln\u011b bez podpor. N\u00e1sledn\u011b bylo nutn\u00e9 z jednotliv\u00fdch d\u00edl\u016f poskl\u00e1dat virtu\u00e1ln\u00ed sestavu, ov\u011b\u0159it smontovatelnost, prov\u011b\u0159it, zda mezi jednotliv\u00fdmi d\u00edly nejsou kolize apod. N\u00e1sledn\u011b bylo c\u00edlem sezn\u00e1mit \u017e\u00e1ky detailn\u011b s prac\u00ed v softwaru Prusaslicer a p\u0159\u00edpravou G-k\u00f3du pro 3D tisk\u00e1rny a samoz\u0159ejm\u011b samotn\u00fd 3D tisk. Nakonec si sami \u017e\u00e1ci ov\u011b\u0159ili, jak pracovali a sestavu si smontovali.

","equipmentDescription":"

-b\u011b\u017en\u00e9 vybaven\u00ed IT u\u010debny -b\u011b\u017en\u00e9 d\u00edlensk\u00e9 n\u00e1stroje \u2013 \u0161roubov\u00e1k PZ, zalamovac\u00ed no\u017e\u00edk, pop\u0159. brusn\u00fd pap\u00edr -3D tisk\u00e1rna -Strojnick\u00e9 tabulky -spojovac\u00ed materi\u00e1l: -vrut 3,5x30 6ks (\u010delisti) -vrut 3,5x70 1ks (vratidlo + z\u00e1vitov\u00e1 ty\u010d) -vruty 3,5x50 6ks (matice + t\u011blo sv\u011br\u00e1ku) -vruty 3,5x60 7ks (pohybliv\u00e1 \u010delist + kryt z\u00e1vitu) Zde by bylo v\u00fdhodn\u011bj\u0161\u00ed jednotliv\u00e9 komponenty upravit, aby bylo mo\u017en\u00e9 pou\u017e\u00edt vruty o stejn\u00e9 d\u00e9lce pro v\u0161echny spojovan\u00e9 sou\u010d\u00e1sti. Probl\u00e9m by mohl nastat u spojen\u00ed \u010delist\u00ed s t\u011blem sv\u011br\u00e1ku, kde nen\u00ed na del\u0161\u00ed vruty dostatek m\u00edsta.

","timeSchedule":"

P\u0159ed zah\u00e1jen\u00edm projektu je pot\u0159eba si sehnat pot\u0159ebn\u00fd materi\u00e1l, v tomto p\u0159\u00edpad\u011b se jedn\u00e1 pouze o vruty ke spojov\u00e1n\u00ed jednotliv\u00fdch d\u00edl\u016f. Pr\u00e1ce na samotn\u00e9m modelov\u00e1n\u00ed m\u016f\u017ee trvat mezi 6-8 vyu\u010dovac\u00edmi hodinami, podle \u0161ikovnosti \u017e\u00e1k\u016f a jejich schopnosti samostatn\u00e9 pr\u00e1ce v modelovac\u00edm softwaru. Po tisku nen\u00ed t\u0159eba nijak zvl\u00e1\u0161\u0165 jednotliv\u00e9 d\u00edly upravovat, pouze odstranit p\u0159\u00edpadn\u00e9 stringov\u00e1n\u00ed a drobn\u00e9 nedokonalosti. S mont\u00e1\u017e\u00ed by se to m\u011blo zvl\u00e1dnout v 1 hodin\u011b. Celkov\u00fd \u010das tisku jednoho sv\u011br\u00e1ku je tedy p\u0159ibli\u017en\u011b 110 hodin.

","workflow":"

Projekt je ur\u010den pro \u017e\u00e1ky sp\u00ed\u0161e technick\u00e9ho zam\u011b\u0159en\u00ed. V p\u0159\u00edpad\u011b, \u017ee bude pou\u017eit u jin\u00e9ho zam\u011b\u0159en\u00ed, je dobr\u00e9 si nejd\u0159\u00edve ov\u011b\u0159it jak takov\u00fd sv\u011br\u00e1k v\u016fbec pracuje a jak\u00e1 je jeho konstrukce.
Shrnout a popsat, jak by m\u011bla konstrukce takov\u00e9ho sv\u011br\u00e1ku vypadat. Popsat jak\u00e9 by m\u011bl m\u00edt parametry, vysv\u011btlit \u00fa\u010del a funkci jednotliv\u00fdch sou\u010d\u00e1stek.
Prom\u00edtnout zad\u00e1n\u00ed projektorem na pl\u00e1tno, p\u0159\u00edpadn\u011b vytisknout a rozdat ka\u017ed\u00e9mu ze \u017e\u00e1k\u016f. V r\u00e1mci zad\u00e1n\u00ed je vhodn\u00e9 jim uk\u00e1zat r\u016fzn\u00e9 typy sv\u011br\u00e1k\u016f a ujasnit si, kterou konstruk\u010dn\u00ed variantu zvol\u00ed. Lze jim i uk\u00e1zat v\u00fdkres sestaven\u00ed tohoto sv\u011br\u00e1ku, jako inspiraci.
Je dobr\u00e9 p\u0159ipomenout z\u00e1sady modelov\u00e1n\u00ed d\u00edl\u016f ur\u010den\u00fdch pro 3D tisk (v\u016fle, rozm\u011bry otvor\u016f pro \u0161rouby, modelovat, aby se tisklo ide\u00e1ln\u011b bez podpor apod.)
P\u0159edpokladem je, \u017ee \u017e\u00e1ci ji\u017e um\u00ed pracovat s 3D CAD softwarem, tak\u017ee by m\u011bli za\u010d\u00edt samostatn\u011b pracovat.
U\u010ditel by m\u011bl pr\u016fb\u011b\u017en\u011b kontrolovat pr\u00e1ci \u017e\u00e1k\u016f a p\u0159\u00edpadn\u011b jim pomoci s technick\u00fdmi v\u011bcmi \u010di modelov\u00e1n\u00edm.
Je pot\u0159eba zm\u00ednit pr\u00e1ci se Strojnick\u00fdmi tabulkami \u2013 zde je nutn\u00e9 naj\u00edt si rozm\u011bry z\u00e1vit\u016f pro z\u00e1vitovou ty\u010d. My jsme pou\u017eili metrick\u00fd z\u00e1vit, z d\u016fvodu ji\u017e d\u0159\u00edve ov\u011b\u0159en\u00e9 snadn\u00e9 tisknutelnosti. Stoup\u00e1n\u00ed z\u00e1vitu je dobr\u00e9 volit co nejv\u011bt\u0161\u00ed, nap\u0159\u00edklad 3 nebo 4 mm, klidn\u011b i v\u00edce.
P\u0159i modelov\u00e1n\u00ed matice a z\u00e1vitov\u00e9 ty\u010de je nutn\u00e9 zohlednit v\u00fdrobn\u00ed nep\u0159esnosti a smr\u0161tivost materi\u00e1lu, tud\u00ed\u017e matice mus\u00ed b\u00fdt vyrobena s v\u011bt\u0161\u00ed v\u016fl\u00ed oproti \u0161roubu, ne\u017e uv\u00e1d\u00ed Strojnick\u00e9 tabulky.
Je nutn\u00e9, aby jednotliv\u00e9 d\u00edly \u017e\u00e1ci poskl\u00e1dali do sestavy a ov\u011b\u0159ili si smontovatelnost pop\u0159\u00edpad\u011b kolize apod.
Po dokon\u010den\u00ed modelov\u00e1n\u00ed je pot\u0159eba \u017e\u00e1k\u016fm uk\u00e1zat pr\u00e1ci se Slicerem a p\u0159\u00edpravu G-code.
Je nutn\u00e9 kontrolovat, co \u017e\u00e1ci nastavuj\u00ed, aby se zamezilo zbyte\u010dn\u00fdm chyb\u00e1m a pl\u00fdtv\u00e1n\u00ed materi\u00e1lu p\u0159i tisku.
N\u00e1sledn\u011b nahr\u00e1t programy na SD kartu a d\u00edly vytisknout.
Vzhledem k dlouh\u00fdm tiskov\u00fdm \u010das\u016fm je pot\u0159eba, aby vyu\u010duj\u00edc\u00ed vytiskl zb\u00fdvaj\u00edc\u00ed d\u00edly do dal\u0161\u00ed hodiny.
Smontovat jednotliv\u00e9 d\u00edly a t\u00edm ov\u011b\u0159it n\u00e1vrh.
Zhodnocen\u00ed funk\u010dnosti d\u00edlu, diskuze o mo\u017en\u00fdch vylep\u0161en\u00edch apod.

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