ME8381 Computer Aided Machine Drawing
UNIT I DRAWING STANDARDS & FITS AND TOLERANCES
Code of practice for Engineering Drawing, BIS specifications – Welding symbols, riveted joints, keys, fasteners – Reference to hand book for the selection of standard components like bolts, nuts, screws, keys etc. – Limits, Fits – Tolerancing of individual dimensions – Specification of Fits – Preparation of production drawings and reading of part and assembly drawings, basic principles of geometric dimensioning & tolerancing.
UNIT II INTRODUCTION TO 2D DRAFTING
Drawing, Editing, Dimensioning, Layering, Hatching, Block, Array, Detailing, Detailed drawing.
Bearings – Bush bearing, Plummer block Valves – Safety and non-return valves.
UNIT III 3D GEOMETRIC MODELING AND ASSEMBLY
Sketcher – Datum planes – Protrusion – Holes – Part modeling – Extrusion – Revolve – Sweep –
Loft – Blend – Fillet – Pattern – Chamfer – Round – Mirror – Section – Assembly
Couplings – Flange, Universal, Oldham’s, Muff, Gear couplings
Joints – Knuckle, Gib & cotter, strap, sleeve & cotter joints
Engine parts – Piston, connecting rod, cross-head (vertical and horizontal), stuffing box, multi-plate clutch
Miscellaneous machine components – Screw jack, machine vice, tail stock, chuck, vane and gear pump