In manufacturing and industrial contexts, fixtures refer to specialized devices or systems designed to securely hold, support, locate, and position workpieces during various machining, assembly, or inspection operations. These fixtures play a critical role in ensuring accuracy, consistency, and efficiency in production processes.

Key features and functions of fixtures include:

1. Workpiece Positioning: Fixtures are designed to accurately position and hold workpieces in a specific orientation or location during machining or assembly.
2. Stability and Support: They provide stability and support to prevent movement or vibration of the workpiece during various operations, ensuring precision and consistent results.
3. Customization: Fixtures can be customized to suit the specific shape, size, and requirements of the workpiece and the manufacturing process.
4. Modularity and Versatility: Some fixtures are designed to be modular, allowing adjustments and adaptations to accommodate different workpieces or tasks.
5. Materials and Design: They can be constructed from various materials such as metal, plastic, or composites, with intricate designs to securely hold and support the workpiece.
6. Automation Integration: Some fixtures are equipped with automation components to enable easier loading and unloading of workpieces, thus integrating with manufacturing automation systems.

Fixtures are used in various industrial operations, including machining (milling, drilling, grinding), welding, assembly, inspection, and testing. For instance, in a CNC milling operation, a fixture holds the workpiece firmly in place, allowing the milling machine to accurately cut or shape the material.

The primary advantages of using fixtures include increased productivity, repeatability, and improved accuracy in manufacturing processes. They contribute to reducing setup times, minimizing errors, and enhancing overall efficiency in production.

The design and utilization of fixtures are crucial in manufacturing, as they directly impact the quality and precision of the final products, making them an essential component of many industrial processes.