Machine Drawing

Class 1 : Introduction

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• Textbook:
• N. D. Bhatt, Engineering Drawing – Plane and Solid Geometry, 51^st Edition, 2012; Charotar Publishing House Private Limited, Anand, Gujarat 388 001, INDIA

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• References:
• N. Sidheswar, P. Kanniah and V.V.S. Sastry, Machine Drawing, Tata McGraw Hill, 2001
• SP 46: 1988 Engineering Drawing Practice for School & Colleges. Bureau of Indian Standards

Textbooks and References

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Conic Sections: Ellipse, Parabola and Hyperbola

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Cycloid, Trochoid, Involute, Helix, and Spirals

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1. Construct the “inferior trochoid” and “superior trochoid” for the above generating circle with points lying 10 mm inside and outside of the circumference respectively. (book pg. 119)
2. Construct the “Archimedean spiral” having the largest and smallest radii as 50 mm and 14 mm respectively with convolution = 1.5 (book pg. 134)
3. Construct a “cycloid” with the generating circle diameter of 50 mm. (book pg. 117)
4. Construct a “parabola” with base of 60 mm and height of 80mm. (Book page�: 111 – Method 1 (Rectangle method).
5. Construct an “ellipse” with major axis as 100 mm and minor axis as 70 mm�(book pg.105 – Concentric circles method and Rhombus method). �

Assignment 1

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Page Layout

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1^st angle system

(Opaque planes)

3^rd angle system

(transparent planes/glass box)

Orthographic views

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1^st angle projection system

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Screwed Fasteners

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Thread Types

Right hand and Left hand Threads

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Thread Designation

M 10 X 1.25

Nominal dia 10mm

Pitch 1.25 mm

M 10

Nominal dia 10mm

Pitch 1.5 mm

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Thread Representation

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Hexagonal and Square Nut

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Hexagonal and Square Headed Bolt

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Screw Heads

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Washers

Nut, Bolt and Washer Together

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Thank you !!!