The fixture usually consists of a positioning component (to determine the correct position of the workpiece in the fixture), a clamping device, a tool setting guide component (to determine the relative position of the tool and the workpiece or to guide the direction of the tool), and an indexing device (to enable the workpiece to be installed in one installation). To complete the processing of several stations, it consists of two types: rotary indexing device and linear moving indexing device), connecting components and clamp body (clamp base).
The fixture is also called a fixture. Broadly speaking, in any process during the process, the device used to install the workpiece quickly, conveniently and safely can be called a fixture. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are more common.
When processing a workpiece on a machine tool, in order to ensure that the surface of the workpiece can meet the technical requirements such as size, geometry, and mutual position accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped (clamped) before processing. . The application of machine tool fixtures is conducive to ensuring the processing accuracy of workpieces and stabilizing product quality; it is conducive to improving labor productivity and reducing costs; it is conducive to improving workers' working conditions and ensuring safe production; it is conducive to expanding the scope of machine tool technology and realizing "one machine for multiple purposes."