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How are test fixtures and jigs designed for testing assembly drawing pcb?

test fixtures and jigs designed for testing assembly drawing pcb

Designed specifically for testing assembly drawing pcb, test fixtures and jigs provide a stable platform from which PCBs can be tested without the need to flip them over to test both sides. They also speed up short testing and reduce the cost of turning PCBs over to test them. Consistent and repeatable jig design allows for a highly automated testing process that can eliminate human error. This translates into a reduction in testing time and overall production cycle times, which ultimately cuts costs.

A jig is a mechanical device that guides a component through an assembly drawing pcb process. They can be simple or complex in design, and they can be made of wood, metal, plastic, or other materials. They are typically used in conjunction with a computer to send commands and receive data from the components and track their responses. This information can then be used to determine whether the component is functioning properly or not.

The test fixture must be able to locate the component’s position and orientation relative to other components in the circuit board. This information can then be used to verify that the component has been installed correctly and that it is connected to other components in a reliable manner. Test jigs are an essential tool for manufacturers of electronic devices. They ensure that a product meets quality standards, and they can identify any defects before a finished product is shipped.

How are test fixtures and jigs designed for testing assembly drawing pcb?

For example, a typical prior art jig 2 includes a movable lower test bed 6 that is positioned above a movable upper probe bed 8. The lower and upper test beds 6 and 8 have respective patterns of upward facing test probes 10 and downward facing test probes 12, which are designed to contact corresponding locations on the underside and topside of a PCB 4 respectively. During jig activation, the lower and upper test beds 6 and 8 are configured to align dynamically with one another.

During the alignment process, the movable nest plate and clamp plates each contain clearance holes that are sized to mate with alignment tooling pins, or rods, that are passed through the respective pattern of holes on the bottom of the test bed. The jig also includes a column defined by the tooling holes, through which removable master tooling rods can be passed during setup.

During the jig’s operation, the lower test bed is positioned over the PCB, and the movable nest plate and clamp plates are actuated to firmly hold the PCB in place and guide it through a series of tests. During the tests, the test equipment sends signals through the interface hardware to the test probes to measure and capture responses and signals from the PCB. The test results are compared to the target points on the PCB, and any deviations, or scatter, from the target center to the test probe are measured. This information is used to determine if the PCB is positioned and aligned correctly, and is ready for final testing and shipment.


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