A Text Book on Engineering Graphics - Central Board of Secondary ...
A Text Book on Engineering Graphics - Central Board of Secondary ... A Text Book on Engineering Graphics - Central Board of Secondary ...
Exercises Q.1. What is cotter? Q.2. What are dimensions of a cotter in terms of the diameter of the shafts to be joined? Q.3. Why clearance is necessary in a cotter joint? Q.4. What do you understand by the self locking of the cotter? Q.5. Why a Gib is used along with a cotter in a Gib and cotter joint? Q.6. Where knuckle joint is used? 134 ROD JOINTS ENGINEERING GRAPHICS
5 CHAPTER Machines use various parts which are joined in several ways for the machine to function as whole. We have learnt about some devices like fasteners (temporary & permanent) and some simple joints to join two rods in the previous chapters. Let us now learn some more miscellaneous joints which are commonly used, viz. (a) TIE-ROD JOINT/TURNBUCKLE (b) FLANGED PIPE JOINT 5.1 TIE-ROD JOINT TIE-ROD AND PIPE JOINTS In our day to day life, we may come across rods/machine parts which are subjected to push and pull and this joints need to be tightened or loosened as in the case of wires of electric poles, cables, a sailboat's standing, rigging wires or even in boxing rings. (b) In electric poles. (a) In cables/ guy wires (c) In boxing rings USE OF TURNBUCKLE Fig.5.1 ENGINEERING GRAPHICS 135
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Exercises<br />
Q.1. What is cotter?<br />
Q.2. What are dimensi<strong>on</strong>s <strong>of</strong> a cotter in terms <strong>of</strong> the diameter <strong>of</strong> the shafts to be joined?<br />
Q.3. Why clearance is necessary in a cotter joint?<br />
Q.4. What do you understand by the self locking <strong>of</strong> the cotter?<br />
Q.5. Why a Gib is used al<strong>on</strong>g with a cotter in a Gib and cotter joint?<br />
Q.6. Where knuckle joint is used?<br />
134<br />
ROD JOINTS<br />
ENGINEERING GRAPHICS
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