The Angle on Which the Strength of the Tool Depends

The angle on which the strength of the tool depends is the rake angle.

Rake Angle

Rake angle is the angle formed between the rake face of the tool and the workpiece surface. It is an essential parameter in determining the cutting force, cutting tool life, surface finish, and chip formation during machining.

Importance of Rake Angle

The rake angle plays a critical role in determining the strength of the tool. Here are some reasons why the rake angle is essential:

1. Cutting Force: The rake angle influences the cutting force acting on the tool. A larger rake angle reduces the cutting force, which leads to better tool life and improved surface finish.

2. Chip Formation: The rake angle also influences the chip formation process. A positive rake angle generates a thin chip, while a negative rake angle generates a thick chip. A thin chip is easier to remove from the workpiece surface, resulting in a better surface finish.

3. Tool Life: The rake angle also affects the tool life. A larger rake angle reduces the tool wear, which leads to longer tool life.

Conclusion

In conclusion, the rake angle is a critical parameter in determining the strength of the tool. A larger rake angle reduces the cutting force, improves the surface finish, and increases the tool life. Therefore, it is essential to select the appropriate rake angle for a given machining operation.