What is the primary purpose of pocket milling in machining?

The primary purpose of pocket milling is to create an interior recess in a workpiece. This process involves removing material from the inside of a specified area, forming a pocket or cavity within the component. Pocket milling is commonly used in various applications, such as creating compartments, slots, or space for other components to fit or to reduce weight in a part without compromising its structural integrity.

The method typically employs a cutting tool that moves in a controlled path to achieve the desired dimensions and contours of the pocket, allowing for precise and efficient material removal. This technique is crucial in manufacturing processes where specific features or shapes must be introduced into a part, distinguishing it from other milling techniques aimed at changing external dimensions or characteristics.