Fixture Definition and Application
Fixtures are a type of system that helps to securely stop and fix workpieces during a machining process that involves cutting and shaping. They are also used for grinding and welding. The purpose of fixtures is to secure and rigidly maintain the workpiece on the milling machine table so that a cutting tool can most efficiently and precisely process the intended surface.
Fixtures are used to make parts on machine tools such as milling machines, lasers, water jet cutters, and grinders. The tools used in the fixture are screws, bolts and clamps. Fixtures generally come in either square or rectangular shapes that secure the workpiece on the table but also provide a means of efficient aperture for cutting tools.
Fixtures are typically made out of aluminum or steel and are usually manufactured on CNC machines. The type of fixture used is often dependent on the material being machined and the machining process. For example, if the part is made of plastic, the fixture needs to be designed with a secure hold while not subjecting the plastic to too much stress. On the other hand, if the part is made of metal, then the fixture should provide a rigid hold so the cutting tools can make precise cuts.
Fixtures can be used for a variety of applications, such as for drilling, cutting, grinding, and welding. They are also commonly used for machining aerospace components and in production lines, where parts are manufactured in a factory setting.
Fixtures can also be used to improve workholding and workpiece accuracy. For example, a fixture may be designed with adjustable clamping pressure that enables operators to adjust the pressure as needed while still getting a secure hold on the part.
Fixtures are essential when it comes to improving the efficiency and accuracy of machine tools. By providing a secure hold on the part they reduce the risk of part damage during machining. Additionally, fixtures can help maximize cutting tool life and make the machining process itself more efficient.
Fixtures have been used in the manufacturing industry for decades. They are an integral part of the machining process, and without them, accuracy and productivity would suffer. As such, it’s important for machinists to understand the types of fixtures available, as well as their uses and applications in order to get the most out of any machining operation.
