(a)
(i) Name two types of fit possible when assembling a shaft and a hole - Leaving Cert Engineering - Question 7 - 2021
Question 7
(a)
(i) Name two types of fit possible when assembling a shaft and a hole.
(ii) Describe any one of the fits named at Q7(a)(i).
(b) A hole and sh... show full transcript
Worked Solution & Example Answer:(a)
(i) Name two types of fit possible when assembling a shaft and a hole - Leaving Cert Engineering - Question 7 - 2021
Step 1
Name two types of fit possible when assembling a shaft and a hole.
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Answer
Two types of fit possible are:
Clearance fit
Interference fit
Step 2
Describe any one of the fits named at Q7(a)(i).
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Answer
Interference fit is a type of fit where the shaft is always larger than the hole. This ensures a tight assembly, preventing any possibility of the shaft slipping out of the hole during operation.
Step 3
Nominal diameter of the hole;
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Answer
The nominal diameter of the hole is 30.00 mm.
Step 4
Largest diameter of the shaft;
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Answer
The largest diameter of the shaft is 30.08 mm.
Step 5
Smallest diameter of the hole;
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Answer
The smallest diameter of the hole is 29.94 mm.
Step 6
The type of fit which will result from the assembly of the largest shaft and the smallest hole.
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Answer
The type of fit that will result from the assembly of the largest shaft and the smallest hole is an interference fit.
Step 7
Name any three of the instruments shown and give one application of each instrument named:
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Answer
Engineering protractor - Used for checking or accurately marking out angles on material.
Digital Vernier calipers - Used for accurately measuring the diameter of round bars or internal diameters of holes. Measurement can be read directly from a digital display.
Vee block & clamp - Used for holding round bars when drilling or marking.
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