Question

Tool life is mostly affected by:

• A. Tool geometry
• B. Cutting speed
• C. Feed and depth
• D. Microstructure of material

Hint:

To prolong tool life, control the cutting speed to avoid excessive heat generation. A balance between cutting speed and feed rate can optimize both tool life and productivity.

Answer 1

The Correct Option is B

Tool life is primarily affected by cutting speed. A higher cutting speed typically leads to increased wear on the tool, as more heat is generated during the cutting process, causing the tool to degrade faster. This results in reduced tool life. The other factors such as tool geometry, feed, and depth also play a role but are secondary to the cutting speed. In order to maximize tool life, it is essential to optimize cutting speed according to the material being machined and the tool material to balance efficiency and durability.