Engineering Graphics and Design Grade 11 P2 2018 QP (Eng)

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Engineering Graphics and Design/P2 Downloaded from hlayiso.com ECiNovember 2018 QUESTION 1: ANALYTICAL (MECHANICAL) “@ oe! QUESTION 15 ] a Given: 1 A) Multiple views of a pulley assembly, a title block and a table of questions. The 7 ‘se i drawings have not been prepared to the indicated scale 3 Ces Instructions: - = Complete the table below by neatly answering the questions, which all refer 4 | to the accompanying drawings and the title block. [30] F gi ° LAI 7 8 « QUESTIONS ANSWERS 9 14 | On what date was the drawing checked? 1 10 2. | What is the name of the engineering firm? 1 3. | What indicated scale has been used? 1 4 | What treatment must the assembly undergo? 1 VIEW 2 5 | On what date was the bracket hole revised? 1 6 | What is the drawing number? 1 7 | What would view 1 be called? 1 / 8 | What would view 2 be called? 1 9. | What roughness value is required on the machined surfaces? 1 10 | What type of section is shown at A? 1 11 | Atwhat angle is the hatching done? 1 12 | Name the feature at B 1 13 | Name the feature at C. 1 14 | Ifa dimension reads 18 on the drawing, what would be the true 2 size? 45 | Complete the given table, for question 15, by inserting the part names for each of the numbered | | parts in View 1 16 | In the box below, draw, in neat freehand, the symbol for the projection system used. 4 / TOTAL 30 VIEW 1 TITLE PULLEY ASSEMBLY ALLDWENSIONS ARE NWILLNETRES | SONETS ANSWER TE 72 CHURCH STREET | PROGRAMME: AUTOCAD 2008 MATERIAL: CAST IRON | 1. BRACKET HOLE 2018/05/13 REINSTEEL GRAAFF-REINET 6280 FILE NAME: T-SA FS AXLE.dwg QUANTITY: 9500 UNITS REVISIONS DATE ENGINEERING www.aqua.co.za_ = ‘B 049 898 2345 DRAWING No. RS 501 E TREATMENT: HARDEN, DRAWN: REINCH 2018/04/10 EXAMINATION NUMBER TURNED ALL DIMENSIONS ARE] ALL UNSPECIFIED FINISH; REMOVE ALL BURRS yp | CHECKED: KEITH 2018/05/15 IN MILLIMETRES RADII ARE R3. AND SHARP EDGES APPROVED: SAULS DorelOsrz2 syMBOL SXMVINATION NUMBER IZ Copyright reserved Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com — f o12 CAM SHAFT AND FOLLOWER DETAIL QUESTION 2: LOCI (CAMS) Given: * The shaft and follower detail of a cam with the follower shown at its lowest position * The vertical centre line of the cam shaft as reference on the drawing sheet The specifications for the movement are as follows: The cam shaft rotates clockwise at uniform velocity Over the first 60° the follower rises 20 mm There is a dwell period for the next 30° Over the next 30° the follower rises a further 20 mm Over the next 60° the follower rises a further 20 mm There is a dwell period for the next 45° Over the next 45° the follower falls 50% of the displacement There is a dwell period for the next 30° * Over the final 60° the follower returns to its original position Instructions: 2.1 Draw, to scale 1 : 1, the given view of the cam shaft and follower using the vertical centre line as reference. The arrow indicating the direction of rotation must be shown 2.2 Draw a displacement graph with a rotational scale of 30° equal 8 mm and a follower displacement scale of 1: 1 for the given motion. Label the graph 2.3. Project and draw the cam profile that would generate the given motion. * Show ALL necessary construction. [33] ASSESSMENT CRITERIA r 1 GRAPH 11 3 CONSTRUCTION 4 4 CAM POINTS: 7 5 CURVE + QUALITY 6 TOTAL 33 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserved Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com — ne QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and right 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 an isometric drawing. * Make S the lowest point of the drawing. * Show ALL necessary construction. * NO stencils may be used. * NO hidden detail is required. [42] 64, 40 ASSESSMENT CRITERIA PLACEMENT 2 2. BASE 183 3. HEXAGONAL PRISM 173 4. CIRCLE + CL 4 TOTAL 42 EXAMINATION NUMBER EXAMINATION NUMBER [4 Copyright reserved Please tum over

Engineering Graphics and Design/P2 SHAFT [1] Downloaded from hlayiso.com — a2 st @10 im —Ht ret dt yt i} sti th iat i {14} | A G48 28 54 28 110, BRACKET [2] 2158 EXPLODED ISOMETRIC DRAWING 10 SPACER [3] M24 NUT [7] M24 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 2). Use point Z as a reference point to start the drawing 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. # 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 1. SHAFT 1 MILD STEEL, 2. BRACKET 1 CAST IRON 3. SPACER, 1 MILD STEEL 4, BUSH 1 BRONZE 5. PULLEY 1 CAST IRON 6. WASHER 1 MILD STEEL 7. M24 NUT 1 MILD STEEL TITLE PULLEY ASSEMBLY 72 CHURCH STREET REINSTEEL taal ENGINEERING www.aqua.co.za ®@ 049 898 2345 ALL DIMENSIONS ARE| ALL UNSPECIFIED IN MILLIMETRES. RADII ARE R3. [Bl Copyright reserved Please tum over

conten Downloaded from hlayiso.com on ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 1 | starr 113 2 | BRACKET 14 3 | SPACER 3 4 | aust 3 5 | PuLey 20 7 |Sthoe “SS | 3 8 | ASSEMBLY 6 SUBTOTAL 69 _| RIGHT VIEW z 1 ashen * 7 2 | puter 7 3 | aRackeT 8 SUBTOTAL 26 TOTAL 95 EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserved