What is the primary purpose of a fixture in CNC machining?

What is the primary purpose of a fixture in CNC machining?

• A. To remove chips during machining
• B. To securely hold and locate the workpiece
• C. To store tools when not in use
• D. To enhance the machine's speed

Answer: (B)

The primary purpose of a fixture in CNC machining is to securely hold and locate the workpiece. Fixtures are essential in ensuring that the workpiece remains stationary and accurately positioned during the machining process, which allows for precise machining operations. Properly designed fixtures minimize movement and vibration, ensuring that parts are consistently machined to the correct specifications, thereby improving the overall quality and accuracy of the final product. While chip removal, tool storage, and machine speed are important aspects of the CNC machining process, they do not represent the primary function of a fixture. Chip removal can be managed through various methods but does not directly relate to the securing of the workpiece. Similarly, while tools need to be organized, the fixture itself is not designed for storing tools. Lastly, while enhancing machine speed is a goal in machining operations, it is not the function of a fixture to directly influence speed; rather, its role focuses on the stability and alignment of the workpiece.

The primary purpose of a fixture in CNC machining is to securely hold and locate the workpiece. Fixtures are essential in ensuring that the workpiece remains stationary and accurately positioned during the machining process, which allows for precise machining operations. Properly designed fixtures minimize movement and vibration, ensuring that parts are consistently machined to the correct specifications, thereby improving the overall quality and accuracy of the final product.

While chip removal, tool storage, and machine speed are important aspects of the CNC machining process, they do not represent the primary function of a fixture. Chip removal can be managed through various methods but does not directly relate to the securing of the workpiece. Similarly, while tools need to be organized, the fixture itself is not designed for storing tools. Lastly, while enhancing machine speed is a goal in machining operations, it is not the function of a fixture to directly influence speed; rather, its role focuses on the stability and alignment of the workpiece.