What is the automobile checking fixture
All cars produced by automobile factories need to be tested with checking fixtures. Automobile checking fixtures are a special inspection equipment used to measure and evaluate the size and quality of parts. On the production site of parts, online inspection of parts can be realized through checking fixtures. For this reason, parts need to be accurately installed on the checking fixtures, and then the part surface and surrounding areas can be inspected by visual inspection, measuring tables, or calipers, It is also possible to visually inspect the holes of different properties on the parts and the connection positions between the parts with the help of inspection pins or visual inspection, so as to ensure the quick judgment of the quality status of the parts during production. After knowing what is an automobile checking fixture, how does it work? This should be what many people want to know:
The working principle of automobile checking fixtures is to use high-speed and high-precision visual processing technology to automatically detect various mounting errors and welding defects on PCB boards. The range of pcb boards can range from fine pitch high-density boards to low-density large-sized boards, and provide online detection schemes, so as to promote the progress of production efficiency and welding quality. Automobile checking fixtures can find and eliminate errors early in the assembly process by using AOI as a tool to reduce defects, To achieve good process control.
For some extremely important functional dimensions on the parts, the checking tools can also be used for numerical detection. Generally, the precise coordinate values of the parts based on the body coordinate system can not be obtained directly with the help of the checking tools, but can be obtained by placing the parts on the checking tools and measuring them with a CMM. The structure of modern checking tools can be used as a measuring support when designing, However, when the online inspection function of the checking fixture and the measurement support function cannot be met at the same time, the online inspection function of the checking fixture shall be met first.
The automobile checking fixture is a special inspection equipment customized according to the requirements of the demander. The design of the checking fixture must be in accordance with the final 3D data and 2D drawings provided by the customer. The 3D data must have the correct automobile coordinate system. The design and manufacture of the checking fixture must be approved by the customer before processing and delivery. The measuring support is an auxiliary support when measuring parts with a CMM, The measuring support of some special parts shall also have the function of some checking fixtures.