dibuix21-26.pdf

7HFQRORJLHVU(62 8QLWDW5HVROXFLyGH SUREOHPHVWHFQROzJLFV / DVVLJQDWXUD GH 7HFQRORJLD pV QRYD SHU D WRWV HOV Sumari 1. Introducció. Què és la tecnologia? 2. El mètode de projectes. 3. El taller de tecnologia. Normes. 3.1. El taller. 3.2. Els grups de treball. 3.3. Les normes de seguretat i higiene. 3.4. Senyalització. 4. Anàlisi d'objectes tecnològics. 5. Els projectes tècnics en tecnologia. 6. Activitats DOXPQHVTXHDUULEHQSHUSULPHUDYHJDGDDO LQVWLWXWpVOD SULPHUDYHJDGDTXHV HVWXGLDHVWDPDWqULDQRREVWDQWDL[z OD7HFQRORJLDHVWjSUHVHQWHQHOQRVWUHHQWRUQHQWRWVHOV FDPSV GH OD QRVWUD YLGD (VWHP URGHMDWV G REMHFWHV L GH PjTXLQHV WHFQROzJLTXHV VLPSOHV SHO TXH HVWD DVVLJQDWXUD YRV UHVXOWDUj IDPLOLDU 'LQV G HVWD SULPHUD XQLWDW HVWXGLDUHPTXqpVODWHFQRORJLDOHVFDUDFWHUtVWLTXHVGHOD FODVVHGH7HFQRORJLDHOVVHQ\DOVGHVHJXUHWDWHQHOWUHEDOO L HOV SDVVRV TXH KHP GH VHJXLU HQ TXDOVHYRO SURFpV WHFQROzJLF SHU D DUULEDU D VDWLVIHU OHV QHFHVVLWDWV TXH HQV VRUJL[HQDOOODUJGHODYLGD 5(62/8&,Ï'(352%/(0(67(&12/Ñ*,&6 7HFQRORJLHVU(62 ,1752'8&&,Ï48Êe6/$7(&12/2*,$" Activitat d'introducció 1. Escriu 10 objectes que utilitzes diàriament, els primers que se t'ocórreguen. Tot val. 2. Ara subratlla els que tu consideres que no són objectes tecnològics. 3. Compara amb el teu company de classe i rodeja amb un cercle els objectes en què estigueu d'acord que no són objectes tecnològics. 4. Posada en comú: escriurem en la pissarra alguns dels objectes que hem triat. 5. El professor explica què és realment un objecte tecnològic. 6. Ara, revisa els objectes que has marcat i corregix els errors si n'hi ha. 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Anàlisi anatòmic: ¾ Quina forma té?. ¾ Quines són les seues dimensions? ¾ Quantes peces ho componen? ¾ Com estan acoblades les peces que la componen? 2. Anàlisi funcional i estètic: ¾ Per a què servix? ¾ Com funciona?. ¾ Quins altres objectes complixen la mateixa funció? ¾ En quins principis físics es basa el seu funcionament? ¾ Quina sensació produïx en les persones? ¾ Quina és la seua textura, color i proporcions? 3. Anàlisi tècnic: ¾ De quin material està construït? ¾ Com és el procés de fabricació? ¾ Quins són els riscos que té el seu maneig quant a la seguretat? ¾ Quines dimensions han d'estar normalitzades? 4. Anàlisi socioeconòmic: ¾ Quina necessitat satisfà? ¾ Com es resolia esta necessitat abans de l'existència d'este objecte? ¾ Quines conseqüències mediambientals té el seu ús? ¾ Com es comercialitza este objecte? ¾ Quin és el cost de fabricació? ¾ Quin és el preu de venda al públic? . ([HPSOH$QjOLVLG XQPDTXLQHWDGHIHUSXQWD $QjOLVLDQDWzPLF x x x x Quina forma té? Formes esfèriques, de prisma, de piràmide, de con, etc. Quines són les seues dimensions? 1,5 x2,5 x1 cm Quantes peces el componen? Dos peces, el cos i la fulla. Com estan acoblades les peces que la componen? La fulla està unida al cos del maquineta de fer punta encaixada i per mitjà d'un caragol 5(62/8&,Ï'(352%/(0(67(&12/Ñ*,&6 7HFQRORJLHVU(62 $QjOLVLIXQFLRQDOLHVWqWLF x Per a què servix? Per a traure punta a llapis i llapis de colors per mitjà de la torsió dels mateixos. x Com funciona? S'introduïx el llapis i es gira, mantenint bé subjecte la maquineta de fer punta x Quins altres objectes complixen la mateixa funció? Hi ha maquineta de fer punta elèctrics. També una fulla. x En quins principis físics es basa el seu funcionament? En l'esforç de cizalladura. x Quina sensació produïx en les persones? Lleuger, fàcil de manejar. x Quina és la seua textura, color i proporcions? Té marques per a ser fàcilment subjectat amb els dits, colors variats (o metàlÂlic). El llarg és major que l'ample i l'alt. $QjOLVLWqFQLF x De quin material està construït? De metall sencer, o de plàstic el cos i la fulla de metall x Com és el procés de fabricació? Es modelen les peces de plàstic o de metall, es dóna forma amb màquines i ferramentes a la fulla. x Quins són els riscos que té el seu maneig quant a la seguretat? Tallar-se amb la fulla si es desprén al traure punta, per això cal assegurar-se que estiga ben fixa abans d'usar-lo. x Quines dimensions han d'estar normalitzades? Les que permeten ser utilitzades amb una mà. La boca d'entrada del llapis ha de ser de grandària estàndard (7 mm aproximadament). $QjOLVLVRFLRHFRQzPLF x Quina necessitat satisfà? Traure punta als llapis i llapis de colors. x Com es resolia esta necessitat abans de l'existència d'este objecte? Amb una fulla. x Quines conseqüències mediambientals té la seua utilització? . Tirar les borumballes del llapis al contenidor orgànic. x Com es comercialitza este objecte? Es ven per unitats en papereries. x Quin és el cost de fabricació? És més barat de produir el de plàstic que el de metall. x Quin és el preu de venda al públic? Baix. 1 o 2 euros (1 euro els de plàstic). 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Llapis 1.2. Regle milÂlimetrat. 1.3. Escaire i cartabó. 1.4. El transportador d'angles. 1.5. Compàs. 2. Normalització, suports i format 2.1. Paper 2.2. Escales. 3. Representació d'objectes. 3.1. Dibuix a mà alçada: esbós i croquis. 3.2. Tècniques per a dibuixar: 2D, 3D 4. Acotació Activitats 1. 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