Engineering Graphics Design P2 Nov 2013 Eng_hlayiso.com_.pdf

Downloaded from hlayiso.com INSTRUCTIONS AND INFORMATION 1. This question paper consists of FOUR questions. 2. Answer ALL the questions. 3. ALL drawings are in third-angle orthographic projection, unless otherwise stated. 4. ALL drawings must be completed using instruments, unless otherwise stated. 5. ALL answers must be drawn accurately and neatly. 6. ALL the questions must be answered on the QUESTION PAPER as instructed. GRADE 12 7. ALL the pages must be re-stapled in numerical sequence, irrespective of whether the question was attempted. 8. Time management is essential in order to complete all the questions. 9. Print your examination number in the block provided on every page. 10. Any details or dimensions not given must be assumed in good proportion. NATIONAL SENIOR CERTIFICATE FOR OFFICIAL USE ONLY QUESTION MARKS OBTAINED ½ SIGN MODERATED ½ SIGN 1 GRADE 12 2 3 4 ENGINEERING GRAPHICS AND DESIGN P2 TOTAL NOVEMBER 2013 2 0 0 2 0 0 FINAL CONVERTED MARK CHECKED BY MARKS: 100 TIME: 3 hours _______ 100 COMPLETE THE FOLLOWING: CENTRE NUMBER This question paper consists of 6 pages. CENTRE NUMBER EXAMINATION NUMBER EXAMINATION NUMBER *BASIC-EDUCATION* Copyright reserved Please turn over

Engineering Graphics and Design/P2 DBE/November 2013 VIEW 3 ©) 37 4 Downloaded from hlayiso.com r 4 HOLES DRILLED 210 QUESTION 1: ANALYTICAL (MECHANICAL) Given: A detailed drawing of a front stub axle, a title block and a table of questions. The drawing has not been prepared to the indicated scale. VIEW 2 115, Instructions: drawing and the title block. Complete the table below by neatly answering the questions, which all refer to the accompanying [30] QUESTIONS ANSWERS 1 | On what date was the drawing checked? What is the name of the engineering firm? What scale is indicated for the drawing? 20 uicuT 2 On what date was the axle angle revised? 2 3 4 | What treatment must the stub axles undergo? 5 6 What is the drawing number? 7 | What would VIEW 1 be called? 8 | How many surfaces need to be machined? 9 | How many threaded holes are there in the stub axle? What production method is required to achieve the finish on the 10 stub axle? ALL UNSPECIFIED RADII ARE 5 mm. ALL DIMENSIONS ARE IN MILLIMETRES. SCALE: 1:2 DRAWING PROGRAM: AUTOCAD 2008 MATERIAL: CAST IRON FILE NAME: T-SA FS AXLE.dwg QUANTITY: 9 500 UNITS DRAWING No, AWF 3628 W TREATMENT: HARDENING 4 BLIND HOLES DRILLED 10 DEEP AND “~* ‘TAPPED M8 x 1,4 VIEW 1 224 11 | What type of section is shown in VIEW 3? 220 M16 x2 12 | Name the encircled feature at 1 13 | Name the feature at 2. 14 | What is the thickness of the feature at 3? 15 | Name the encircled feature at 4. 16 | Name the type of curve at 5. 17 | Determine the angle between the centre lines at 6. 18 | What is the depth of the undercut? 19 | Determine the complete dimensions at: A B Cc alyl|r| rin D 20 projection system used In the space provided in the title block (ANSWER 20), draw, in neat freehand, the symbol for the TOTAL | 30 REMOVE ALL BURRS AND SHARP EDGES. TURNING 25, PRECISION ENGINEERING ‘54 SOMTSEU ROAD KINGSMEAD DURBAN 4000 031 335 1600 TITLE FRONT STUB AXLE ANSWER 20 SYMBOL Copyright reserved 2. AXLE HOLES: 2013/05/16 4. AXLE ANGLE 2013/05/15 REVISIONS DATE DRAWN: JVL 2013/04/10 CHECKED: KC. 2013/05/12 APPROVED: SC EXAMINATION NUMBER 2013/05/22 Sc. ef DU GAT EXAMINATION NUMBER [2 ° Please tum over

° a Downloaded from hlayiso.com — La % QUESTION 2: LOCI “ge Cc NOTE: Answer QUESTIONS 2.1 and 2.2 2.1 MECHANISM Given: A schematic diagram of crank AB, connecting rod BC and rocker CD. Aand D are fixed points. Motion: As crank AB rotates in an anticlockwise direction, rocker CD oscillates back and forth. Instructions: Using the given diagram, trace the locus generated by point P for ONE revolution \ / Show ALL necessary construction. 14] \ ) \ L / ASSESSMENT CRITERIA NN a + [construction 6 | 2 | LOCUS OF P 8 SUBTOTAL 14 2.2 CHUTE Given: The front view of the shaft of a chute with the profile of the chute in the start and end positions. Specification: © Direction: left-hand * Turns: ONE AND A HALF Instructions: Draw, to scale 1 : 1, the chute around the shaft. Show ALL necessary construction. [20] 240 ESE =| mE |~20_| 4) ASSESSMENT CRITERIA 4] CL + CONSTRUCTION 8 2 | CHUTE 12 SUBTOTAL 20 TOTAL 34 EXAMINATION NUMBER EXAMINATION NUMBER 3 — NN 0 0 8

Engineering Graphics and Design/P2 Downloaded from hlayiso.com — QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and left view of a bracket © The position of point S on the drawing sheet Instructions: Using scale 1: 1, convert the orthographic views of the bracket to a sectional isometric drawing on cutting plane AA * Make S the lowest point of the drawing. * Show ALL necessary construction * NO stencils may be used * NO hidden detail is required. [41] REGULAR S \ o24 HEXAGON ~ \ A—_+ = 36 \ a | |30__|18_| 30 25 75. 80 87 ASSESSMENT CRITERIA 1] AUX'VIEW+ PLACEMENT | 2 w 2 | BASE 8 Ss 3 | HEXAGONAL PRISM 10 4 | circLes 5 5 | SECTION 12 6 | HATCHING 4 TOTAL a EXAMINATION NUMBER, Copyright reserved HN ———e— [4 Please tum over

Engineering Graphics and Design/P2 MS SLOT 2x2 @ Us GRUB SCREW [6] 82 M24 WASHER [2] 42 1 (PR 24 =F Noy, | 33 _ 37 BUSH [4] EXPLODED ISOMETRIC DRAWING 954 24 113 Downloaded from hlayiso.com 72" 1 7 [ESS T | 924 ir PULLEY [3] final ___ 5 SPOKES EQUI-SPACED DBE/November 2013 QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded isometric drawing of the parts of a pulley assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the pulley assembly Instructions: * Answer this question on page 6 * Draw, to scale 1:1 and in third-angle orthographic projection, the following views of the assembled parts of the pulley assembly: 4.1 A sectional front view on cutting plane A-A, as seen from the direction of the arrow shown on the exploded isometric drawing. The cutting plane, which passes through the vertical centre line of the assembly, is shown on the right view of the bracket (part 5). 4.2 The right view * ALL drawings must comply with the guidelines contained in the SANS 10111. NOTE: * Show THREE faces of the M24 nut and ALL necessary construction. You may not use a stencil * NO hidden detail is required. Add the following features to the drawing: © The cutting plane A-A « Label the sectional view SECTION A-A. [95] PARTS LIST PART QUANTITY MATERIAL 4. M24 NUT 1 MILD STEEL 2. WASHER 1 MILD STEEL 3. PULLEY 1 CAST IRON 4, BUSH 1 BRONZE 5. BRACKET 1 CAST IRON 6. GRUB SCREW 1 MILD STEEL 7. SHAFT 1 MILD STEEL TITLE | \o- rT Pe He = Ei PULLEY ASSEMBLY — leh } [23] $4 SOMTSEU ROAD en - PRECISION ngewe 108 ENGINEERING e ostoss 1600 BRACKET [5] Copyright reserved BAS TC. FE DUGAT ° ALL UNSPECIFIED RADII ARE R3. ALL DIMENSIONS ARE IN MILLIMETRES, OF Please tum over

° a Downloaded from hlayiso.com — ASSESSMENT CRITERIA SECTIONAL FRONT VIEW possie | osraneo | sien | wooeRaTeo 2 | puter 16 3 | aracker % 4 | eush 3 5 | crus screw 3 6 | starr 7 7 | HATCHING 10 SUBTOTAL 57 RIGHT VIEW 1 | Washer 6 2 | puney 8 3 | BRacker Th SUBTOTAL 21% GENERAL 1 | ceNTRELINEs 7 2 |Stanesiaser | 34 3 | assewaty 6 SUBTOTAL 16% TOTAL 95 EXAMINATION NUMBER HN ———e— I Copyright reserved