{"id":4567,"date":"2014-07-17T09:54:15","date_gmt":"2014-07-17T09:54:15","guid":{"rendered":"http:\/\/www.rc-tabor.com\/wordpress\/?p=4567"},"modified":"2014-07-17T10:02:31","modified_gmt":"2014-07-17T10:02:31","slug":"maturitni-prace-jan-brich-poprve","status":"publish","type":"post","link":"https:\/\/www.rc-tabor.com\/wordpress\/?p=4567","title":{"rendered":"Maturitn\u00ed pr\u00e1ce – Jan Brich poprv\u00e9…."},"content":{"rendered":"

\"Honza<\/p>\n

Zaj\u00edmavou maturitn\u00ed pr\u00e1ci na t\u00e9ma kolem Rc\u010dek a aut zpracoval Honza Brich. Pr\u00e1ci poskytl k zhl\u00e9dnut\u00ed i n\u00e1m, tak a\u0165 se l\u00edb\u00ed\u00a0…<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

<\/p>\n

\u00davod<\/h3>\n

 <\/p>\n

1. Z\u00e1kladn\u00ed popis a nastaven\u00ed modelu<\/h3>\n

\u00a0\u00a0 1.1 Nastaven\u00ed podvozku<\/h5>\n

 <\/p>\n

2. Zav\u011b\u0161en\u00ed kola zadn\u00ed n\u00e1pravy<\/h3>\n

\u00a0\u00a0 2.1 Vytvo\u0159en\u00ed 3D modelu zadn\u00ed n\u00e1pravy<\/h5>\n
\u00a0\u00a0 2.2 Co je to AutoDesk Inventor?<\/h5>\n
\u00a0\u00a0 2.3 Vznik 3D modelu zadn\u00ed nez\u00e1visl\u00e9 n\u00e1pravy<\/h5>\n

 <\/p>\n

\u00davod<\/h1>\n

K\u00a0testov\u00e1n\u00ed jsem si vybral z\u00e1vodn\u00ed podvozek slovensk\u00e9ho v\u00fdrobce Xray, kter\u00fd se v\u011bnuje z\u00e1vodn\u00edm podvozk\u016fm ji\u017e \u0159adu let. Vyr\u00e1b\u00ed modely od offroad bugy (ter\u00e9nn\u00ed modely) a\u017e po onroad modely (halov\u00e9 modely). Na modelech pou\u017e\u00edv\u00e1 nejnov\u011bj\u0161\u00ed technologie a materi\u00e1ly z\u00a0pevnostn\u00edch ocel\u00ed, karbonu a\u017e po plastov\u00e9 d\u00edly se skeln\u00fdmi vl\u00e1kny.<\/p>\n

\"obr.1\"<\/p>\n

Obr.1 Bo\u010dn\u00ed pohled na model xray T3 [1]<\/strong><\/p>\n

\u00a0\u00a0 Pro maturitn\u00ed pr\u00e1ci jsem vybral podvozek Xray s\u00a0ozna\u010den\u00edm T3, poch\u00e1zej\u00edc\u00ed z\u00a0roku 2010. Pro m\u00e9 testov\u00e1n\u00ed to bude dosta\u010duj\u00edc\u00ed model. V\u00a0testech se zam\u011b\u0159\u00edm na t\u0159i faktory, kter\u00e9 ovliv\u0148uj\u00ed chov\u00e1n\u00ed modelu (tlumi\u010de, pneumatiky, diferenci\u00e1l). Na okoln\u00ed vlivy jako je v\u00e1ha baterie, elektroniky p\u0159\u00edpadn\u011b odpor karoserie (jej\u00ed tvar) nebude p\u0159i testech br\u00e1n z\u0159etel, jeliko\u017e tyto parametry neovliv\u0148uj\u00ed z\u00e1sadn\u011b chov\u00e1n\u00ed modelu. Testov\u00e1n\u00ed bude prob\u00edhat na hladk\u00e9 asfaltov\u00e9 plo\u0161e za p\u0159\u00edzniv\u00fdch pov\u011btrnostn\u00edch podm\u00ednek. Zvol\u00edm si z\u00e1kladn\u00ed nastaven\u00ed, od kter\u00e9ho budu prov\u00e1d\u011bt zm\u011bny. V\u017edy ud\u011bl\u00e1m pouze jednu zm\u011bnu s\u00a0velkou odchylkou od norm\u00e1lu (l\u00e9pe t\u00edm vypozoruji odli\u0161n\u00e9 chov\u00e1n\u00ed modelu).<\/p>\n

Jeliko\u017e je model v\u00fdrazn\u011b podobn\u00fd dosp\u011bl\u00fdm z\u00e1vodn\u00edm voz\u016fm, vyu\u017eiji odborn\u00fdch knih (pop\u0159. internetu) a pokus\u00edm se v\u0161e zakomponovat do testovan\u00ed. Tak jako velk\u00e9 automobily pou\u017e\u00edvaj\u00ed nap\u0159\u00edklad zimn\u00ed a letn\u00ed obut\u00ed nebo z\u00e1vodn\u00ed speci\u00e1ly \u0161otolinov\u00e9 (pra\u0161n\u00e9 cesty) a asfaltov\u00e9 pneumatiky, tak i na modely 1:10 je velk\u00e1 \u0161k\u00e1la vzork\u016f pneumatik. Pro na\u0161e testov\u00e1n\u00ed vybereme pneumatiky, kter\u00e9 n\u00e1m uk\u00e1\u017e\u00ed, jak velk\u00e9 rozd\u00edly mohou b\u00fdt p\u0159i zm\u011bn\u011b pneumatik v\u00a0pr\u016fjezdu jednoduchou zat\u00e1\u010dkou. Pro z\u00edsk\u00e1n\u00ed nejlep\u0161\u00edho nastaven\u00ed budeme postupn\u011b testovat r\u016fzn\u00e9 typy pneumatik.<\/p>\n

1. Z\u00e1kladn\u00ed popis a nastaven\u00ed modelu<\/h1>\n

V\u00a0\u00favodu jsem se zm\u00ednil o testovan\u00e9m podvozku, jeho v\u00fdrobci a materi\u00e1lech, ze kter\u00fdch je vyroben. Mus\u00edme si ale \u0159\u00edct jak je model poh\u00e1n\u011bn a co v\u0161e je jeho srdcem. Hlavn\u00ed \u010d\u00e1st\u00ed je pohonn\u00e1 jednotka, kter\u00e1 se skl\u00e1d\u00e1 z\u00a0regul\u00e1toru ot\u00e1\u010dek a samotn\u00e9ho elektromotoru. Oproti velk\u00fdm automobil\u016fm model nem\u00e1 spojku ani p\u0159evodovku, tuto pr\u00e1ci zast\u00e1v\u00e1 regul\u00e1tor, kter\u00fd d\u00e1v\u00e1 motoru pokyny vp\u0159ed a vzad. Regul\u00e1tor tak\u00e9 zaji\u0161\u0165uje nap\u00e1jen\u00ed pro v\u0161echny komponenty modelu. Na modelu je zaji\u0161t\u011bn st\u00e1l\u00fd p\u0159evodov\u00fd pom\u011br pomoc\u00ed \u0159emenic (oz. kola) a \u0159emen\u016f. Zat\u00e1\u010den\u00ed kol zaji\u0161\u0165uje servo, kter\u00e9 je ovl\u00e1d\u00e1no \u0159idi\u010dem p\u0159es vys\u00edla\u010d. V\u00a0servu je um\u00edst\u011bn mal\u00fd motor, kter\u00fd p\u0159es ozuben\u00e1 kola ovl\u00e1d\u00e1 p\u00e1ku a ta zat\u00e1\u010d\u00ed samotn\u00fdmi koly. Jak ji\u017e bylo v\u00fd\u0161e zm\u00edn\u011bno, cel\u00fd model je \u0159\u00edzen pomoc\u00ed vys\u00edla\u010dky pracuj\u00edc\u00ed v\u00a0p\u00e1smu Wifi (2,4 GHz), tato vys\u00edla\u010dka se sp\u00e1ruje s\u00a0p\u0159ij\u00edma\u010dem v\u00a0modelu a \u0159idi\u010d ovl\u00e1d\u00e1 v\u0161echny j\u00edzdn\u00ed funkce. Cel\u00fd model dost\u00e1v\u00e1 do pohybu baterie typu Lithium-Polymer o nap\u011bt\u00ed 7.4V a kapacit\u011b 4000mah. Tato baterie v\u00e1\u017e\u00ed zhruba 300g a model na ni vydr\u017e\u00ed jet p\u0159ibli\u017en\u011b 20min. Je to stejn\u00e9 jako u velk\u00e9ho automobilu, \u010d\u00edm v\u00edce \u0161lapete na plyn, t\u00edm se zvy\u0161uje spot\u0159eba a v p\u0159\u00edpad\u011b modelu odb\u011br energie z\u00a0baterie. V\u00a0n\u00e1sleduj\u00edc\u00edch t\u00e9matech se zam\u011b\u0159\u00edme na porovn\u00e1n\u00ed testovan\u00fdch komponent\u016f mezi modelem 1:10 a klasick\u00fdm spalovac\u00edm automobilem, bez kter\u00e9ho si mnoho z\u00a0n\u00e1s nedok\u00e1\u017ee p\u0159edstavit ka\u017edodenn\u00ed \u017eivot.<\/p>\n\n\n\n
\u00a0\"obr.2\"<\/td>\n\u00a0<\/strong>1. Regul\u00e1tor ot\u00e1\u010dek a motor<\/strong>2. Servo s\u00a0p\u0159ij\u00edma\u010dem<\/strong>3.Pohon\u00e1 baterie<\/strong><\/p>\n

4. Tlumi\u010de<\/strong><\/p>\n

5. Kuli\u010dkov\u00fd diferenci\u00e1l<\/strong><\/p>\n

6. \u0158emenice a rozvodov\u00fd \u0159emen<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Obr.2 Z\u00e1kladn\u00ed rozlo\u017een\u00ed modelu<\/strong><\/p>\n

1.1 Nastaven\u00ed podvozku<\/h2>\n

Pro\u00a0nastavov\u00e1n\u00ed podvozk\u016f se pou\u017e\u00edvaj\u00ed takzvan\u00e9 set-up syst\u00e9my. Jedn\u00e1 se o p\u0159esn\u00fd v\u00fdrobek, kter\u00fd ve stupn\u00edch m\u011b\u0159\u00ed hodnoty nastaven\u00e9 na podvozku. Funguj\u00ed tak, \u017ee se\u00a0nasad\u00ed m\u00edsto kol a\u00a0zobrazuj\u00ed nastavovan\u00e9 hodnoty. Pr\u00e1ce s\u00a0n\u00edm je velmi p\u0159esn\u00e1 a zvl\u00e1dne j\u00ed i pr\u016fm\u011brn\u00fd u\u017eivatel. J\u00e1 jsem pou\u017eil set-up syst\u00e9m firmy Xray, kter\u00fd je vid\u011bt na\u00a0p\u0159ilo\u017een\u00e9 fotografii.<\/p>\n

\"obr.3\"<\/strong><\/p>\n

Obr.3 Nastavovac\u00ed m\u011b\u0159idla – tzv. \u201esetup syst\u00e9m\u201c <\/strong><\/p>\n

2. Zav\u011b\u0161en\u00ed kola zadn\u00ed n\u00e1pravy<\/h1>\n

Zav\u011b\u0161en\u00ed kol je \u010d\u00e1st vozu, kter\u00e1 je p\u0159ipevn\u011bna k\u00a0r\u00e1mu vozu. Zaji\u0161\u0165uje svisl\u00fd pohyb vzhledem k\u00a0vozovce \u010di podvozku. Je pevn\u011b ulo\u017eena a zabra\u0148uje ne\u017e\u00e1douc\u00edm pohyb\u016fm (nap\u0159. pohyb vp\u0159ed a vzad). U RC model\u016f se vyu\u017e\u00edv\u00e1 nez\u00e1visl\u00e9 zav\u011b\u0161en\u00ed, kdy ka\u017ed\u00e9 kolo m\u00e1 sv\u00e9 vlastn\u00ed zav\u011b\u0161en\u00ed s\u00a0tlum\u00edc\u00edm celkem.<\/p>\n\n\n\n
1. Zadn\u00ed nez\u00e1visl\u00e1 n\u00e1prava, kter\u00e1 je p\u0159edm\u011btem modelov\u00e1n\u00ed 3D<\/strong>2. Rozvodov\u00fd \u0159emen poh\u00e1n\u011bj\u00edc\u00ed vozidlo<\/strong>3. Zadn\u00ed planetov\u00fd diferenci\u00e1l<\/strong>4. P\u0159edn\u00ed nez\u00e1visl\u00e1 n\u00e1prava\"obr.4\"<\/strong><\/p>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.1 Vytvo\u0159en\u00ed 3D modelu zadn\u00ed n\u00e1pravy<\/h2>\n

Ve \u0161kole jsem se za 4 roky nau\u010dil ovl\u00e1dat z\u00e1kladn\u00ed funkce programu AutoDesk Inventor , a proto jsem se rozhodl, \u017ee do sv\u00e9 pr\u00e1ce vyrob\u00edm \u010d\u00e1st modelu. D\u00edky \u010dasov\u00e9 n\u00e1ro\u010dnosti jsem si vybral \u010d\u00e1st zadn\u00ed n\u00e1pravy.<\/p>\n

2.2 Co je to AutoDesk Inventor?<\/h2>\n

Inventor slou\u017e\u00ed k\u00a0tvorb\u011b 3D model\u016f sou\u010d\u00e1st\u00ed p\u0159edev\u0161\u00edm pro stroj\u00edrensk\u00e9 konstruov\u00e1n\u00ed. Lze volit mezi tvorbou 2D i 3D , jeliko\u017e tento program m\u00e1 spr\u00e1vn\u00e9 n\u00e1stroje pro oboj\u00ed. Pomoc\u00ed programu lze vytv\u00e1\u0159et n\u00e1\u010drty a n\u00e1sledn\u00e9 \u0159e\u0161en\u00ed jeho tvar\u016f, modifikovat konstruk\u010dn\u00ed sestavy ale i pracovat paraleln\u011b v\u00a0\u0161ir\u0161\u00edm t\u00fdmu konstrukt\u00e9r\u016f. B\u011bhem p\u00e1r kliknut\u00ed m\u016f\u017ee u\u017eivatel z\u00a0vytvo\u0159en\u00e9ho 3D modelu zhotovit 2D v\u00fdkresovou dokumentaci, rychleji ne\u017e pomoc\u00ed 2D CAD n\u00e1stroj\u016f. Inventor se t\u00edmto \u0159ad\u00ed mezi nejprod\u00e1van\u011bj\u0161\u00ed CAD aplikace na sv\u011btov\u00e9m trhu.<\/p>\n

Vzhledem k\u00a0maturitn\u00ed pr\u00e1ci jsem si vybral pro modelov\u00e1n\u00ed \u010d\u00e1st zav\u011b\u0161en\u00ed zadn\u00ed n\u00e1pravy. Nejprve jsem si dan\u00e9 sou\u010d\u00e1st\u00ed pomoc\u00ed posuvn\u00e9ho m\u011b\u0159idla nam\u011b\u0159il, nar\u00fdsoval a pot\u00e9 p\u0159e\u0161el k\u00a0samotn\u00e9 realizaci. \u0160kola, kterou nav\u0161t\u011bvuji, vlastn\u00ed i vysp\u011bl\u00e9 3D tisk\u00e1rny a d\u00edky tomu si vytvo\u0159enou sestavu nech\u00e1m vyrobit na zdej\u0161\u00edch stroj\u00edch.<\/p>\n

2.3 Vznik 3D modelu zadn\u00ed nez\u00e1visl\u00e9 n\u00e1pravy<\/h2>\n

Jako prvn\u00ed \u00fakol bylo nam\u011b\u0159it sou\u010d\u00e1sti a zorganizovat si ur\u010dit\u00fd postup modelov\u00e1n\u00ed. K\u00a0m\u011b\u0159en\u00ed jsem pou\u017eil standartn\u00ed posuvn\u00e9 m\u011b\u0159idlo (\u0161upleru), kter\u00e1 se pou\u017e\u00edv\u00e1 ve v\u0161ech r\u00fdsovac\u00edch odv\u011btv\u00edch.<\/p>\n

 <\/p>\n

\"obr.5\"<\/p>\n

Obr.5 N\u00e1\u010drt zadn\u00edho ramene<\/strong><\/p>\n

\"obr.6\"<\/p>\n

Obr.6 N\u00e1\u010drt zadn\u00edho n\u00e1boje<\/strong><\/strong><\/p>\n

\u00a0\u00a0 Postupn\u011b jsem se p\u0159i modelov\u00e1n\u00ed pot\u00fdkal s\u00a0tvarovou slo\u017eitost\u00ed n\u011bkter\u00fdch komponent\u016f. N\u011bkter\u00e9 r\u00e1diusy jsem \u0159e\u0161il nap\u0159\u00edklad pomoc\u00ed v\u00ed\u010dka od \u201ePET\u201c lahve, jeliko\u017e p\u0159esn\u011b pasovalo do po\u017eadovan\u00e9ho rozm\u011bru. Nev\u00e1hal jsem jej tedy vyu\u017e\u00edt, nap\u0159\u00edklad pro radius na n\u00e1boji viz. Obr.6 a 7. V\u011bt\u0161ina hran na sou\u010d\u00e1stech m\u011bla specifick\u00e1 a r\u016fznorod\u00e1 zaoblen\u00ed, kter\u00e1 mi komplikovala kompletaci, ale v\u0161e se povedlo vy\u0159e\u0161it.<\/p>\n

Obr.7 3D model zadn\u00edho n\u00e1boje<\/strong><\/p>\n

\"obr.7\"<\/p>\n

Velk\u00e9 komplikace mi zp\u016fsobila hnac\u00ed h\u0159\u00eddel tzv. kloubov\u00e1 poloosa, ve kter\u00e9 se mi neda\u0159ilo vhodn\u011b \u201ezavazbit\u201c v\u0161echny d\u00edly, tak aby se h\u0159\u00eddel v\u00a0programu nerozpadala.<\/p>\n

\"obr.8\"<\/strong><\/p>\n

\u00a0Obr.8 <\/strong><\/p>\n

 <\/p>\n

Pomoc\u00ed prvku sestava<\/em><\/strong> jsem dan\u00e9 sou\u010d\u00e1sti slo\u017eil a pomoc\u00ed zabarven\u00ed je upravil do n\u00e1sleduj\u00edc\u00ed dob\u0159e \u010diteln\u00e9 podoby.<\/p>\n

\"obr.9\"<\/p>\n

Obr.9 <\/strong><\/p>\n

\u00a0\u00a0 N\u00e1sledn\u011b jsem sou\u010d\u00e1sti slou\u010dil do jedin\u00e9 sestavy<\/em><\/strong>, tak aby vznikla \u010d\u00e1st zadn\u00ed n\u00e1pravy v\u010detn\u011b hnac\u00ed h\u0159\u00eddele. Pro dobrou \u010ditelnost d\u00edl\u016f, jsem pou\u017eil v\u00fdrazn\u00e9 barvy, kter\u00e9 jednotliv\u00e9 d\u00edly dob\u0159e rozli\u0161\u00ed.<\/p>\n

\"obr.10\"<\/p>\n

Obr.10<\/strong><\/p>\n

\u00a0\u00a0 Za pomoci pana profesora Ing. Richarda N\u011bmce jsem se mohl sezn\u00e1mit s\u00a03D tisk\u00e1rnou a nechat si tak vyrobit 3D sou\u010d\u00e1sti, kter\u00e9 budu prezentovat p\u0159i maturitn\u00ed obhajob\u011b. 3D tisk spo\u010d\u00edv\u00e1 v\u00a0rovnom\u011brn\u00e9m vrstven\u00ed speci\u00e1ln\u00edho pr\u00e1\u0161ku, kter\u00fd je v\u00a0p\u0159\u00edpad\u011b \u0161patn\u00e9ho tisku znovu recyklovateln\u00fd. Po dokon\u010den\u00ed tisku je v\u00fdrobek velmi k\u0159ehk\u00fd a zne\u010di\u0161t\u011bn\u00fd okoln\u00edm pr\u00e1\u0161kem. Zbytkov\u00fd pr\u00e1\u0161ek se ze sou\u010d\u00e1sti jemn\u011b ofoukne \u010di sejme jemn\u00fdm \u0161t\u011bte\u010dkem. Pot\u00e9 se sou\u010d\u00e1st napust\u00ed speci\u00e1ln\u00edm lepidlem, kter\u00e9 sou\u010d\u00e1st vytvrd\u00ed.<\/p>\n

\"obr.11\"<\/p>\n

Obr.11 3D v\u00fdtisky d\u00edl\u016f n\u00e1pravy<\/strong><\/p>\n

\u00a0\u00a0 Vyroben\u00e9 sou\u010d\u00e1sti jsem lehce opracoval (brusn\u00fdm pap\u00edrem) a slo\u017eil do \u010d\u00e1sti n\u00e1pravy. Na obr. 12 je vid\u011bt srovn\u00e1n\u00ed dvou n\u00e1prav. V\u00fd\u0161e je n\u00e1prava vyroben\u00e1\u00a03D tisk\u00e1rnou, n\u00ed\u017ee je komer\u010dn\u00ed n\u00e1prava vyr\u00e1b\u011bn\u00e1 s\u00e9riov\u011b.<\/p>\n

\"obr.12\"<\/p>\n

Obr.12 Srovn\u00e1n\u00ed n\u00e1prav (3D tisk a origin\u00e1ln\u00ed)<\/strong><\/p>\n

V\u00a0dal\u0161\u00edm \u010dl\u00e1nku se pod\u00edv\u00e1me na odpru\u017een\u00ed a tlumen\u00ed n\u00e1pravy\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"

Zaj\u00edmavou maturitn\u00ed pr\u00e1ci na t\u00e9ma kolem Rc\u010dek a aut zpracoval Honza Brich. Pr\u00e1ci poskytl k zhl\u00e9dnut\u00ed i n\u00e1m, tak a\u0165 se l\u00edb\u00ed\u00a0…      <\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4567","post","type-post","status-publish","format-standard","hentry","category-ostatni"],"_links":{"self":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4567"}],"version-history":[{"count":0,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4567\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}