Unit 1 Introduction

• Concept and need of mechanical drafting
• Explain Drawing standards (IS-696 /SP 46)

Unit 4 Surface development of solids and their uses in engineering field

4 lecture hours

• (Only basic solids and their combinations are to be prepared.) 6 18 2
• Sectional orthographic: 1
• Concept of orthographic reading. 2
• Need of sections
• section lines & cutting plane. 3
• Types and applications of sections- full
• Sectional view drawings from given isometrics drawing / physical object and cutting plane conditions. 3 10 3
• Geometric & Dimensioning Tolerances (GD&T): 1
• Importance of limits and fits
• hole basis system and shaft basis system
• types of fits
• tolerance grade and fundamental deviation. 2
• Numerical based on limits and fits
• (It is compulsory to ask numerical related to Limits and Fits
• in Exam.) 2 7 4
• Production drawings: 1
• Machining symbol
• geometric symbol
• weld joint symbols as per BIS-813
• supplementary symbols
• fluid and pipe fitting symbols
• sketches of threads
• screws, nut, bolts
• keys, etc
• Program Name: Diploma in Engineering Level: Diploma Branch: Mechanical Engineering / Mechanical (CAD/CAM)/ Mechatronics Engineering Course / Subject Code : DI02000121 Course / Subject Name : Mechanical Drafting 2
• Productions drawing including GD&T and drafting symbols of simple mechanical assembly having minimum 5-6 components each made up of various manufacturing operations

Unit 5 Assembly and detail drawings

5 lecture hours

• Concept of assembly drawing having 4-5 mechanical parts
• drawing of orthographic projections for each component. 2
• Fundamentals of detail drawing
• Bill of Material (BOM) and assembly drawing. 3
• Demonstrate and explain 1-2 industrial example assembly drawings

Unit 6 Introduction to CAD software

6 lecture hours

• Discuss about available software in CAD field and their capabilities 2
• AutoCAD software window: Title bar, Ribbon tool bar, Quick Access Toolbar
• View port
• Command prompt
• Draw tool bar, modify, UCS, status bar, etc. 3
• File features: Opening new file
• saving file
• open drawing. 4
• Setting up new drawing: Unit
• dynamic USC, etc. 5
• Co-ordinate system in AutoCAD:Absolute & Relative coordinates
• Cartesian & Polar coordinates. 6
• Concept of Layers
• Blocks and Hatch with applications

Unit 7 Dimensioning in Auto CAD and Annotation

4 lecture hours

• Dimensioning in AutoCAD. 2
• Dimension types: Linear
• Dimension editing: Adding text
• rotating the dimension text. 4
• Text writing in AutoCAD: Single line
• multi-line text