Fixture is a tool used to fix, support and position the workpiece, which is widely used in machining, assembly, inspection and other fields. The use of fixture can improve processing accuracy, improve production efficiency, ensure processing safety and other advantages, so it is widely used in modern machining.
Fixtures can be divided into many types according to their use and working mode. The most common is the manual clamp used in turning and drilling, which grips the workpiece by rotating the handle. There are also automatic clamps, which can grip the workpiece by hydraulic, pneumatic, etc. The types and shapes of modern fixtures are more and more diverse, such as electromagnetic fixtures, manipulator fixtures, sensor fixtures and so on.
The structure of the fixture usually includes a base, a clamping mechanism and a positioning mechanism. The base is usually made of a strong material and can be fixed to the machine. The clamping mechanism is the core part of the fixture, which determines the efficiency of the clamping workpiece. The clamping mechanism usually consists of movable hooks or clamping claws, which can be adjusted and replaced according to the shape and size of the machined workpiece. The positioning mechanism is mainly a series of positioning parts for fixing and positioning the workpiece, including spring positioning pin, positioning sleeve, etc.
The fixture plays a very important role in the processing. Compared with the traditional processing method, the use of fixture can reduce the processing error and waste, improve the processing accuracy and production efficiency. In addition, the fixture can also improve the stability and safety of the processing when making complex workpieces. Therefore, fixtures are very important in machining, assembly, testing and other fields.
