1. The outer frame (clamping side) of the PCB jigsaw should adopt a closed loop design to ensure that the PCB jigsaw will not be deformed after being fixed on the fixture;
2. PCB panel width ≤260mm (SIEMENS line) or ≤300mm (FUJI line); if automatic dispensing is required, PCB panel width×length ≤125 mm×180 mm;
3. The PCB jigsaw shape should be as close as possible to the square. It is recommended to use 2×2, 3×3…
4. The center distance between the small plates is controlled between 75 mm and 145 mm;
5. When setting the reference positioning point, usually leave a non-resistance area 1.5 mm larger than it around the positioning point;
6. There should be no large devices or protruding devices near the connection point between the outer frame of the jigsaw and the inner small board, and the small board and the small board, and there should be more than 0.5mm space between the components and the edge of the PCB To ensure the normal operation of the cutting tool;
7. Four positioning holes are made at the four corners of the frame of the jigsaw, with a diameter of 4mm±0.01mm; the strength of the holes should be moderate to ensure that they will not break during the upper and lower boards; the precision of the hole diameter and position should be high, and the hole wall should be smooth and free of burrs ；
8. Each small board in the PCB panel must have at least three positioning holes, 3≤aperture≤6 mm, and no wiring or patching is allowed within 1mm of the edge positioning hole;
9. The reference symbols used for the positioning of the entire PCB and the positioning of fine-pitch devices. In principle, the QFP with a spacing of less than 0.65mm should be set in its diagonal position; the positioning reference symbols used for the imposition PCB daughter board should be paired Used, arranged at the opposite corner of the positioning element;
10. Large components should have positioning posts or positioning holes, such as I/O interface, microphone, battery interface, micro switch, earphone interface, motor, etc.