The grooving operation refers to the process of reducing the diameter of a workpiece over a very narrow surface. It involves cutting a groove or channel on the surface of the workpiece to achieve the desired diameter reduction. This operation is commonly used in various industries such as manufacturing, machining, and engineering.

Key Points:
- Grooving is an operation that involves reducing the diameter of a workpiece over a narrow surface.
- It is commonly used in manufacturing, machining, and engineering industries.
- The process involves cutting a groove or channel on the surface of the workpiece.
- The purpose of grooving is to achieve a desired diameter reduction.

Explanation:

1. Reducing the diameter of a workpiece:
The main objective of grooving is to reduce the diameter of a workpiece. This is often necessary in situations where a specific diameter or size is required for the workpiece to fit into a particular assembly or to meet certain design specifications.

2. Narrow surface:
Grooving is performed over a very narrow surface of the workpiece. This means that only a small portion of the workpiece's surface is affected by the operation. The groove or channel created during grooving is typically shallow and does not extend across the entire surface of the workpiece.

3. Cutting a groove:
To perform the grooving operation, a cutting tool is used to create a groove or channel on the surface of the workpiece. The cutting tool is carefully guided along the workpiece, removing material and reducing the diameter of the workpiece over the narrow surface.

4. Purpose of grooving:
The primary purpose of grooving is to achieve a desired diameter reduction. By cutting a groove on the surface of the workpiece, the diameter can be reduced to the desired size. This is often done to ensure proper fit and functionality within an assembly or to meet specific design requirements.

In summary, grooving is an operation that involves reducing the diameter of a workpiece over a narrow surface. It is achieved by cutting a groove or channel on the surface of the workpiece using a cutting tool. The purpose of grooving is to achieve a desired diameter reduction in order to meet specific design specifications or assembly requirements.