Engineering Graphics and Design Grade 11 P2 2014 QP

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Engineering Graphics and Design/P2 Downloaded from hlayiso.com EC DBE/November 2014 QUESTION 1: ANALYTICAL (MECHANICAL) Given: Four views of a steering bracket with a title block and a table of questions. Instructions: Complete the table below by neatly answering the questions, which + all refer to the accompanying drawings and title block. a Show all calculations. [29] 1 | On what date was the drawing first checked? 1 WA 2. | From what material is the steering bracket manufactured? 1 i 3. | Which drawing method was used to create these drawings? 1 VIEW 2 _-(6|_ i a ~ 4 How many threaded holes are there in this drawing? 1 5 | How many sets of drawings are there? 1 “ 2s 2328 6 | What is the tolerance allowed on the dimensions? 1 He 7 | How deep must the M10 thread be? 1 /PoD.110 & L 8 | What is feature A called? 1 9 [Determine the dimension at B? 2 DRILL 5 THR - M10x7 DEEP 10 | What is feature C called? 1 2x45" aaa 11 | Whats the size of angle D? 1 a 12 | What is the size of the hole marked E? 2 — al 4 13 | What is the size of the arc marked F? 2 as 7 1 ~ 14 | Determine the dimension at G? 1 === 15 | What type of section is shown on VIEW 2? 1 16 | What type of section is shown on VIEW 4? 1 17 | What do the letters P.C.D. stand for? 1 18 | How many 010 holes need to be drilled in the bracket? 1 19 | What would VIEW 3 be called? 1 99 | Draw the cutting plane located on VIEW 1, forthe sectional VIEW 3 4, and label it A-A, VIEW 1 VIEW 4 94 |n the box below (ANSWER 21), draw, in neat freehand, the 4 symbol for the projection system used. TOTAL 29 1 ALL DIMENSIONS ARE IN MILLIMETRES. DATE CHANGED BY REVISION DESCRIPTION No UNLESS OTHERWISE DRAWN BY: JP. DRAWING SET NO. 2 OF 6 MATERIAL: CAST IRON ANSWER 21 SPECIFIED, TOLERANCES ’ Suse ee DATE; 20/12/2013 FILE NAME: SB-48-2013 HEAT TREATMENT: NONE £0.25 CHECKED BY: SvR WEST STREET PROCAST MATATIELE - ALL UNSPECIFIED RADII DATE: 15/01/2014 MANUFACTURING 4730 ARE R2 www. procast.co.za APPROVED BY: DE EXAMINATION NUMBER DATE: 17/02/2014 DRAWING PROGRAM ‘AUTOCAD 2014 SCALE 1.2 STEERING BRACKET SYMBOL EXAMINATION NUMBER [2 Copyright reserve Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com — QUESTION 2: LOCI (CAMS) Given: * The shaft and follower detail of an industrial cam with follower shown at its lowest position. The minimum cam radius is 15 mm. The specifications for the movement is as follows: The cam shaft rotates clockwise at uniform velocity. Over the first 60°, the follower rises 14 mm, Over the next 30°, the follower rises a further 14 mm, There is a dwell period for the next 60°. Over the next 60°, the follower rises 26 mm Over the next 30°, the follower falls 18 mm. There is a dwell period for the next 30°. Over the next 30°, the follower falls a further 18 mm. There is a dwell period for the next 30°. Over the final 30°, the follower returns to its original position, ee Instructions: 2.1. Draw, to scale 1:1, a displacement graph with a scale of 30° equal to 8 mm and a follower displacement scale of 1:1 for the given motion. Also, determine the displacement at the following degrees: 75°, 225°, 285° and 345°. Indicate the degrees at the bottom of the graph. Label the graph. 2.2. Project and draw the cam profile that would generate the given motion. Use the extra degrees (75°, 225°, 285° and 345°) plotted on the graph to obtain a more accurate curve. Indicate the degrees on the cam profile. The arrow indicating the direction of rotation must be shown. * Show ALL necessary construction. [38] SHAFT 20 ASSESSMENT CRITERIA 1 GRAPH + LABEL 12 2 ARROW + SHAFT + MIN RADIUS +DEGREE+CL | © 3 CONSTRUCTION 6 4 CAM POINTS % 5 CURVE + QUALITY 4b TOTAL | 38 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserve Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com — QUESTION 3: ISOMETRIC DRAWING Given: The front view, top view and right view of a model © The position of point B on the drawing sheet. Instructions: Convert the orthographic views of the model into a scale 1: 1 isometric drawing. * Make corner B the lowest point of the drawing. * Show ALL necessary circle and other construction. * NO hidden detail is required. [39] 84 50. ASSESSMENT CRITERIA 1. AUX. VIEW+PLACING | 3 2. BASE 113 3. HEXAGON 133, 4, WEB 2 5. ISOMETRIC CIRCLES 4 6. CIRCLE CONSTRUCTION | 23 7. CENTRE LINES a TOTAL | 39 EXAMINATION NUMBER EXAMINATION NUMBER [4 Copyright reserve Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com EC DBE/November 2014 40 R12 34 26 DATE: 25/02/2014 108. | 180 ALL DIMENSIONS ARE | DRAWN BY: BASE T , INMILIMETRES DATE: (6 BUFFALO STREET x EVERY SHAFT MTHATHA ALLUNSPECIFIED | CHECKED BY: 1c 6001 EASTERN CAPE RADII ARE R3. Sovaor MANUFACTURING www.everyshatt.co.za DEPARTMENT BASIC EDUCATION DATE: 20/01/2014 NT BASIC! APPROVED BY: cw | ™ NOVEMBER 2014 DRAWING PROGRAM: CAD 2014 SHAFT SUPPORT e ‘ARTS LIST gt PART QUANTITY | MATERIAL 125 | 1. BASE 1 CAST IRON | 2. SHAFT 1 Mo sree 3g = = = =" gy 3. HOUSING 1 CAST IRON = 4, BUSH 1 BRONZE 5. GREASE NIPPLE 1 CAST IRON 6. PIN 1 MILD STEEL SHAFT 7. WASHER 1 MILD STEEL 932) | 24 | | Ay 8, NUT 1 MILD STEEL a OF 7 eet A 2 o24 e —H | 8 / 8 a el J fi ns | (A L\ Ai LU fireta gy Tr ES 1} 1 ‘\ of a eY/ 4 arr | | ‘ SJ at “M10 238 oe Ra j__46 HOUSING GREASE NIPPLE PIN WASHER M10 NUT on 90 038 226 | 32 QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded isometric drawing of the parts of a shaft support assembly, showing the position of each part relative to all the others. © Orthographic views of each of the parts of the shaft support assembly. * Point S as a reference point on page 6. 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 shaft support assembly: ** Asectional front view, on cutting plane A-A, as seen from the direction of the arrow shown on the exploded isometric drawing. The cutting plane is shown on the left view of the base (part 1), «2 The left view. * ALL drawings must comply with the guidelines contained in the SABS 0111. NOTE: « Show three sides of the nut in the sectional front view. « Show all the constructions for the nut. * No hidden detail is required. Insert the following detail to the drawing The cutting plane A-A * Label the sectional view: SECTION A-A SCALE 1:1 [94] Copyright reserve Please tun over

Engineering Graphics and Design/P2 EC DBE/November 2014 Downloaded from hlayiso.com ASSESSMENT CRITERIA LEFT VIEW + GENERAL 1. BASE 12 2, HOUSING 43 3, SECTION AA 3 ACENTERLINES | 5 LABEL 3 HATCHING. 12 ASSEMBLY 7 SUBTOTAL | 463 SECTIONAL FRONT VIEW 1, BASE 6 2, HOUSING 14 3. BUSH 3 4. GREASE 6 NIPPLE 5, SHAFT 7 6, PIN 1 7. WASHER 2 8, NUT 8 SUBTOTAL | 47} SUBTOTAL | 46} TOTAL | 94 EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserve