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FAQs on Theory of Metal Cutting, Engineering Materials & Manufacturing Engineering - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is the theory of metal cutting?
Ans. The theory of metal cutting involves understanding the various mechanisms and processes involved in removing material from a workpiece using a cutting tool. It encompasses the study of forces, temperatures, and tool wear during the cutting process.
2. What are the different types of cutting forces in metal cutting?
Ans. There are three primary types of cutting forces in metal cutting: the cutting force, the feed force, and the radial force. The cutting force is responsible for the actual removal of material, the feed force determines the rate at which the tool advances into the workpiece, and the radial force acts perpendicular to the cutting direction.
3. How does tool wear affect metal cutting?
Ans. Tool wear in metal cutting can significantly impact the cutting process. As the tool wears, its cutting edge becomes dull, leading to increased cutting forces, poor surface finish, and dimensional inaccuracies. It is crucial to monitor and control tool wear to maintain the desired cutting performance.
4. What are the major factors influencing the selection of cutting parameters in metal cutting?
Ans. Several factors influence the selection of cutting parameters in metal cutting, including the material being machined, the desired surface finish, tool life, and machine capabilities. Additionally, the cutting speed, feed rate, and depth of cut are key parameters that need to be carefully chosen to achieve optimal results.
5. How does the choice of cutting tool material affect metal cutting performance?
Ans. The choice of cutting tool material has a significant impact on metal cutting performance. Different tool materials have varying hardness, wear resistance, and thermal conductivity, which directly affect tool life, cutting forces, and surface finish. Selecting the appropriate tool material for a specific application can greatly enhance productivity and quality in metal cutting operations.
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