JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course Overview: This course is an introduction to technical graphics and computer-aided design. The course includes sketching, production drawing, and a significant amount of hands-on experience on a CAD system. The production drawing portion covers topics like multi-view drawings, section views, auxiliary views and dimensioning.

Course Objectives

Upon completion of this course the student will be able to:

• 1. Draw orthographic projections and section views of objects with dimensions using standard specifications and practices
• 2. Learn to use CAD systems using AutoCAD and Autodesk Inventor for Parametric Solid Modeling
• 3. Produce engineering drawings and models using AutoCAD and Autodesk Inventor.

UNIT - I

Conventional representation of Materials – conventional representation of parts – screw joints, welded joints, springs, gears, electrical, hydraulic and pneumatic circuits – methods of indicating notes on drawings.

UNIT - II

Limits and Fits: Types of fits, exercises involving selection / interpretation of fits and estimation of limits from tables.

UNIT - III

Form and Positional Tolerances: Introduction and indication of the tolerances of from and position on drawings, deformation of runout and total runout and their indication.

UNIT - IV

Surface roughness and its indication: Definitions – finishes obtainable from various manufacturing processes, recommended surface roughness on mechanical components. Heat treatment and surface treatment symbols used on drawings.

UNIT - V

Detailed and Part drawings: Drawing of parts from assembly drawings with indications of size, tolerances, roughness, form and position errors etc. Part drawing using computer aided drafting by CAD software

TEXT BOOKS:

• 1. Production and Drawing – K.L. Narayana & P. Kannaiah/ New Age
• 2. machine Drawing with Auto CAD- Pohit and Ghosh, PE

REFERENCE BOOKS:

• 1. Geometric dimensioning and tolerancing- James D. Meadows/ B.S Publications
• 2. Engineering Metrology, R.K. Jain, Khanna Publications R16 B.TECH MSNT.