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Describe any three of the following in relation to machining: (i) Cutting fluids, (ii) Clearance angle, (iii) Chuck key, (iv) Depth of cut. - Leaving Cert Engineering - Question b - 2021
Question b
Describe any three of the following in relation to machining: (i) Cutting fluids, (ii) Clearance angle, (iii) Chuck key, (iv) Depth of cut.
Worked Solution & Example Answer:Describe any three of the following in relation to machining: (i) Cutting fluids, (ii) Clearance angle, (iii) Chuck key, (iv) Depth of cut. - Leaving Cert Engineering - Question b - 2021
Step 1
Cutting fluids
Answer
Cutting fluids are essential in machining processes to enhance tool performance and workpiece quality. They serve multiple purposes including reducing friction and heat generation during cutting. By providing a cooling effect, cutting fluids help prevent tool wear and extend the tool's lifespan. Additionally, they assist in flushing away chips and debris from the cutting zone, facilitating a better surface finish.
Step 2
Clearance angle
Answer
The clearance angle is a critical aspect of tool geometry that prevents rubbing between the tool and the workpiece. It allows only the cutting edge of the tool to make contact with the workpiece while maintaining a gap to avoid interference. This angle is crucial for effective cutting, as it enhances chip flow and reduces cutting forces, resulting in improved machining efficiency.
Step 3
Chuck key
Answer
A chuck key is a tool used to operate a chuck, commonly found in lathes and milling machines. It is designed to secure or release the workpiece by turning the chuck, specifically when opening and closing a 3 or 4 jaw chuck on a centering lathe. The chuck key ensures a firm grip on the workpiece during machining, which is vital for precision and safety.