Shearing Operation: Defining Edge Removal

A shearing operation is a metal cutting process used to separate material without the formation of chips or the use of burning. It involves applying opposing forces to create a stress that exceeds the material's shear strength.

Understanding Edge Notching

The question asks for the specific term used when pieces are removed from the edge of a material during a shearing operation.

• Notching: This process specifically involves cutting or removing a portion, often V-shaped or rectangular, from the edge or corner of a workpiece. This directly matches the description in the question.
• Coining: This is a compression process used to create specific features or flatten surfaces, not typically for removing edge pieces via shearing.
• Grooving: This involves creating a channel or groove on a surface. While it's a cutting process, it's not the primary term for removing distinct pieces from the material's edge.
• Lancing: This involves making a cut and often bending the resulting flap, leaving it attached to the material. It doesn't usually mean removing a piece entirely from the edge.

Therefore, removing pieces from the edge in a shearing operation is correctly identified as Notching.

Final Answer Determination

Based on the definitions:

• Notching perfectly describes removing pieces from the edge.
• Coining, grooving, and lancing have different primary functions in metalworking.

The correct term is Notching.