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Explain concept of Counter Bore and countersink in radial drilling machine
Counter Bore :-
This operation uses a pilot to guide the cutting action to accommodate the heads =of bolts. Fig. 10 illustrates the counter boring, countersunk and spot facing processes.
Countersink:-
Special angled cone shaped enlargement at the end of the hole to accommodate the screws. Cone angles of 60°, 82°, 90°, 100°, 110°, 120°
Explain the semi universal drilling machine The semi universal drilling machine this machines, in addition to the above three basic movements, carry provision for swinging of
Tensile strength: What will be its ultimate tensile strength? Solution The condition for necking is = n = 0.3077 Hence using this value of , the true stress at ne
Construction of Railway Line: Earthwork Earthwork in embankment is made up of soil from nearby borrowpits. The soil is deposited in layers of 25 cm and compacted at o
What is drilling machine The machine used for drilling is called drilling machine. The drilling operation can also be accomplished in lathe, in which the drill is held in ta
estimating time of boring, turning,milling?
Reinforced Earth Walls: When constructing ROBs, fly-overs and underpasses, it is often not possible to provide sloped earthen embankments for the approaches, which are as hig
Heat Dissipation : During clutch application, large amount of heat is generated. The rubbing surfaces should have sufficient area and mass to absorb the generated heat. The proper
how do you differentiate between wet steam and dry steam?
A piston-cylinder assembly fitted with a paddle wheel contains air, initially at p1=30 lbf/in2, T1=540 °F, and V1=4 ft3. The air undergoes a process to a final state where p2=20 lb
Heat Treatment and Surface Treatment Processes Heat treatment processes are employed to improve of a work piece. The category includes the processes. Annealing, Normalizing,
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