15ME36A Computer Aided Machine Drawing syllabus for ME

Sections of Solids:
Sections of Pyramids, Prisms, Cubes, Tetrahedrons, Cones and Cylinders resting only on their bases(No problems on, axis inclinations, spheres and hollow solids), True shape of section. 04 Hours
Orthographic views:
Conversion of pictorial views into orthographic projections of simple machine partswith or withoutsection. (Bureau of Indian Standards conventions are to be followed for the drawings), Hidden line conventions,Precedence of lines.04 Hours

Thread forms:
Thread terminology, sectional views of threads. ISO Metric (Internal & External), BSW (Internal andExternal), square, Acme and Sellers thread, American Standard thread.Fasteners:
Hexagonal headed bolt and nut with washer (assembly), square headed bolt and nut with washer (assembly)simple assembly using stud bolts with nut and lock nut. Flanged nut, slotted nut, taper and split pin for locking, countersunk head screw, grub screw, Allen screw.

Keys and Joints:
Parallel, Taper, Feather Key, Gib head key and Woodruff key
Riveted joints:
Single and double riveted lap joints, Butt joints with single/double cover straps (Chain and zigzag usingsnap head riveters).
Joints:
Cotter joint (socket and spigot), Knuckle joint (pin joint) for two rods.

Couplings:
Split muff coupling, Protected type flange coupling, Pin (bush) type flexible coupling, Oldham’s coupling andUniversal coupling (Hook’s Joint).

Limits, Fits and Tolerances:
Introduction, Fundamental tolerances, Deviations, Methods of placing limit dimensions,Types of fits with symbols and applications, Geometrical tolerances on drawings, Standards followed in industry.03 HoursAssembly Drawings: (Part drawings shall be given)
1. Plummer block (Pedestal Bearing)
2. Rams Bottom Safety Valve
3. I.C. Engine connecting rod
4. Screw jack (Bottle type)
5. Tailstock of lathe
6. Machine vice
7. Lathe square tool post
15 Hours