The fixture is a process device used to fasten the workpiece quickly and maintain its precise relative position. That is to say, fixture is an indispensable part of machining. With the development of technology to the goal of high speed, high efficiency, thoughtfulness, integration, intelligence and environmental protection, fixture technology is developing towards the goal of high precision, high efficiency, module, combination, generality and economy.
Fixture is also called fixture. In a broad sense, any process in the process, which is used to install workpiece quickly, simply and safely, can be called fixture. For example, welding fixture, inspection fixture, equipped fixture, machine tool fixture, etc. Often referred to as fixture.
When processing the workpiece, in order to make the surface of the workpiece reach the technical requirements such as the size, geometric form and the mutual position accuracy with other surfaces in the drawing regulations, the workpiece must be installed (positioned) and clamped (clamped) before processing.
The use of jigs is conducive to ensuring the processing accuracy, safe and stable production of the workpiece; to increasing the production rate and reducing the cost; to improving the working conditions of the workers and ensuring the safe production; to enlarging the process boundary and completing the “one machine and multi use”.
The fixture is usually composed of positioning elements (to confirm the exact position of workpiece in the fixture), clamping device and indexing device, so that the workpiece can be processed in several positions in one installation, including two types of rotary indexing device and linear moving indexing device, connecting elements and clamp details (fixture base), etc.
In order to improve the production efficiency and product quality, in the middle and back section of the production, the fixture is often used for performance test or auxiliary equipment (can be equipped with constant appearance and height, etc.). The essence is widely used in the manufacturing plant, because the right and wrong mark is customized, so there is only something unexpected but not impossible
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