Computer-aided manufacturing (CAM) is to carry out various processes according to certain processes. All the process requirements mentioned above should be prepared before light painting. For example, mirror image, solder resist expansion, process line, process frame, line width adjustment, center hole, contour line and other issues must be solved.
CAM completes this process. Special attention should be paid to the place where the spacing in the user file is too small, and the corresponding treatment must be carried out. Because the technological process and technical level of each factory are different, in order to meet the final requirements of users, necessary adjustments must be made in the production process to meet the needs of users.
Accuracy and other requirements. Therefore, CAM processing is an essential process in modern printed circuit manufacturing.
First, the completed work. Computer aided manufacturing (computer aided manufacturing)
1. Correct the pad size and spell the D code.
4. The correction of line width and the combination of D code.
3. Check the minimum spacing between pads, between pads and lines, and between lines.
4. Check and assemble the aperture size.
5. Check the minimum line width.
6. Determine the expansion parameters of solder resistance.
Once a mirror.
⒏ Increase various production lines and process boxes.
(9) Line width correction to correct side erosion.
⑤ Form a central hole.
(1) Add contour corner lines.
5] Add positioning holes.
⒔ imposition, rotation, mirror image.
5. One piece.
5] graphics superposition processing, tangent processing.
[6] Add a user trademark.
2. the organization of. Cam process
Because there are dozens of popular CAD software in the market, the management of CAD process should start with organization, and a good organization will get twice the result with half the effort.
Because the format of Gerber data has become the standard of light painting industry, Gerber data should be the processing object in the whole light painting process. Taking CAD data as the object will bring the following problems.
1.There are too many kinds of CAD software. If you want to complete all kinds of process requirements in CAD software, it requires every operator to master the operation of each CAD software skillfully. This requires a long training period to make operators become skilled workers and meet the actual production requirements.
This is uneconomical in time and economy.
3. Due to various technological requirements, some requirements cannot be realized by some CAD software. Because it is designed with CAD software, it does not take into account the special requirements of process treatment, so it can not meet all the requirements. CAM software is specialized in process treatment, and it is the best to do these jobs.
[13] 3. cam software is powerful, but it is only effective for Getber files, not for CAD files.
4. If CAD is used for process treatment, every operator is required to be equipped with all CAD software, and each CAD software has different process requirements. This will cause unnecessary confusion in management.
To sum up, the CAM organization should be the following structure (especially large and medium-sized enterprises).
(1) All processes uniformly take Gerber data as the processing object.
⑵ Every operator must master the skills of converting CAD data into Gerber data.
⑶ Every operator must master one or several methods of operating CAM software.
⑷ Make a unified process specification for Gerber data files.
CAM process can be managed by several operators relatively centrally. Reasonable organization will greatly improve management efficiency and production efficiency, effectively reduce the error rate, and thus achieve the effect of improving product quality.