Precision machining fixture refers to a device installed on a machine tool, used to clamp workpieces or guide cutting tools, so that workpieces and cutting tools have the correct mutual position relationship. According to its function and function, CNC machine tool fixtures are usually composed of positioning components, clamping devices, installation and connection components, and fixtures.

The positioning element is one of the main positioning elements of the fixture, and its positioning accuracy will directly affect the machining accuracy of the workpiece. Common positioning components include V-shaped blocks, positioning pins, positioning blocks, etc.

The function of the clamping device is to maintain the positioning position of the workpiece in the fixed device, so that the workpiece will not change its original position due to external forces during the machining process.

The connecting component is used to determine the position of the fixture on the machine tool, thereby ensuring the correct machining position between the workpiece and the machine tool.

Precision machining also has certain requirements for its fixtures, including precision and rigidity requirements, positioning requirements, openness requirements, fast clamping requirements, and easy chip removal.

Fixture is the basic part of a fixture, used to connect various components or equipment on the fixture, making it a whole to ensure the accuracy and rigidity of the workpiece.