ADAMA SCIENCE AND TECHNOLOGY UNIVERSITY

SCHOOL OF ENGINEERING

MECHANICAL AND VEHICLE ENGINEERING DEPARTMENT

MACHINE DRAWING -I

GENERAL INFORMATION

Course Code MEng 2141

Program Bachelor of Science in Mechanical Engineering

Module Name Machine Drawing-I

Module No. NN

Instructor 1 Name :

Office location: B610, Room No: 0

ECTS Credits (CP) 3(5Cr.)

Weekly Work Load (Hours)

Lecture Tutorial Lab/Practical Home Study Total

1 6 0 3 10

Year /Semester Year: 2nd ,Semester: I

Pre-requisite MEng1032(Engineering Drawing)

Course Status Compulsory

Course Description:

Types of machine Drawings; Conventional representation of Fasteners, Bearings, Seals, Gears, Springs and Shafts; Welded Connections, Fits and Tolerance, Surface Texture, Geometric Tolerance; Exercises using simple units such as check valves, workshop jacks, vises, hand pumps, hand grinders, hand drills, and so forth. Detail and assembly drawings of machines.Course Objectives: Give complete practice on drawings of various machine elements and their assemblies.

Introduce the students to various types of detailed and assembled drawings of simple machines.

Make them practice the use of machine tolerance allowance, surface texture symbols Teach them how to assemble and visualize machine components

Competences (Learning Outcomes)

Acquire the knowledge and ability of visualizing different mechanical components Communicate with others through standard works Prepare exploded view and spare part drawings of a task

SYLLABUS

Week Lecture Topics Reading /Assignments

1 Fundamentals of Machine Drawing: Standardization; Paper size; Scales; Title block; Lettering; Bill of materials

Reading: Chapter 1

2 Types of Machine Drawing: Assembly drawings; Part drawings; Shop drawings; Catalogue drawings; Schematic representations; Patent drawings

Reading: Chapter 2

3 Dimensioning: Size dimensions; Location dimensions; Rules in dimensioning; Dimensioning of standard features

Reading: Chapter 3

4 Temporary Fasteners: Bolted joint; Riveted joint; Pinned and keyed joints; Circlip

Reading: Chapter 4

Class Exercise -I

5 Bearings and Seals: Bearings; Seals Reading: Chapter 5

6 Gears: Spur gears; Bevel gears; Worm gears and worm wheels

Reading: Chapter 6

7 Springs: Compression springs; Tension springs; Torsion springs

Reading: Chapter 7

8-9 Shafts: Splined shafts; Serrated shafts Reading: Chapter 8

10-11 Welded Connections: Types of welded joints; Conventional representations

Reading: Chapter 9

Class Exercise -II

12 Fits and Tolerance Reading: Chapter 10

13 Surface Texture Reading: Chapter11Assignment 1

14 Geometric Tolerance Reading: Chapter 12

15-16 Working Drawing: Detail drawings; Assembly drawings

Reading: Chapter 13

Class Exercise -III

Assessment& Evaluation

The course assessment includes the following components with the indicated proportions

Class Exercise -I (10%) Class Exercise -II (10%) Assignment-I (10%) Class Exercise –III (10%) MidExaminations (20%) Final examination (40%)

Attendance: Minimum of 80% attendance during lecture hours and 100% attendance during practical work sessions, except for some unprecedented mishaps is required.

References:

1. Cecil H. Jensen, Jay D. Helsel, and Dennis Short, Engineering Drawing And Design, Aug 17, 2007

2. David, Allan Low, Manual of Machine Drawing and Design - Mechanical Drawing, Jun 1, 2006

3. Singh S., &Sah, P.L., Fundamentals of Machine Drawing, Printice Hall of India Private Limited, New Delhi, 2003

4. Frederick E Giesecke, Alva Mitchell, Henry C Spencer, and Ivan Leroy Hill, Engineering Graphics (8th Edition), Aug 12, 2003.

5. Sidheswar, N., Machine Drawing, Tata McGraw-Hill Publishing Company Ltd., New York, 1989

6. Frank M., Fredrick D., Edwin T., Michael J., & John T., Engineering Graphics, John Wiley & Sons, New York, 1989

7. Thomas French, Charles Vierck, and Robert Foster, Engineering Drawing and Graphics Technology, Jan 1, 1993.

8. Sidheswar, N., Machine Drawing, Tata McGraw-Hill Publishing Company Ltd., New York, 1989