PCB Tech - How to draw PCB outline processing drawings

How to draw PCB outline processing drawings
In the printed board manufacturing process, the document production, technical requirements, and acceptance standards for foreign orders are more formal, and the outline dimension processing drawings are more complete. The processing requirements and outline tolerances are indispensable. However, in the current domestic PCB design, the most important Most PCB files only provide the outline of PCB processing, and there is no mark on the outline ruler. There is no basis for the inspection of the outline processing.

Cause inconvenience.

I have been engaged in CAM work for many years, and I have some understanding of the characteristics of various software. The best software for drawing PCB outline processing drawings should be AUTOCAD. AUTO-CAD has powerful functions in machining design, and the design is convenient and quick. How to design the PCB processing outline drawing in AUTO-CAD software?

First, convert the PCB file to the GERBER file format, put the various contour lines that need shape processing in a layer of files, and output the GERBER file of the contour line of the shape processing in the CAM350 software as a .DXF file format, and open AUTO -CAD software, select-- load in .DXF file, select one - set the arrow size and value of the dimension

Body size, unit, tolerance marking method, distance between marking line and border line, etc., are very important for designing high-quality outline drawings. Then choose one-mark the outline dimensions. When marking, use the capture method. First, the outline drawing Zoom in and then capture, so that the marked size is more accurate. The AUTO-CAD software can be marked in various forms. The marking method can be determined according to your needs. The V-CUT and U-shaped groove processing requirements can be drawn together. At the same time, the outline drawing can be carried out according to the standard drawing method. First design the standard drawing frame, the design unit, designer, design time, processing product name, etc. can all be reflected in the standard drawing frame, first import the standard drawing frame in the AUTO-CAD software, and select the insert method to import the shape processing After the outline and outline dimensions are marked, zoom it into the marking frame, and at the same time, you can add any form of description and technical requirements. A complete outline drawing will be displayed in front of your eyes and can be printed out directly.

If you want to merge the outline processing drawing with the split hole drawing and print it, you can save the outline drawing as *DXF file format and import it with CAM350 software. When the outline drawing has a Chinese description, you need to generate the outline drawing For the pt file format, choose to add a plotter in the print management, choose HP's 7585B, and then choose one - to generate *PLT file, which can be imported with any CAM software, and can be printed or drawn after merging with the hole map Make a negative film for inspection.
iPCB has passed ISO9001:2008, ISO14001, UL, CQC and other quality management system certifications, produces standardized and qualified PCB products, masters complex process technology, and uses professional equipment such as AOI and Flying Probe to control production and X-ray inspection machines. Finally, we will use double FQC inspection of appearance to ensure shipment under IPC II standard or IPC III standard.