In PCB manufacturing, pre-production engineering is a crucial stage to ensure that design documents are transformed into producible files, involving core processes such as file conversion, process evaluation, layout optimization, and data preparation. The following are the specific processes and key points:
First, the pre-production engineering process
File conversion and inspection
GERBER FILE conversion: Convert the GERBER file provided by the customer (including each layer of circuits, solder mask, drilling, text, test data, etc.) into a format available in the factory (such as Extended Gerber RS-274X or Gerber X2), and store it in the server.
Data integrity check: Confirm that all necessary data (such as GERBER files, engineering drawings, contact forms, customer specifications, etc.) are complete, and check detailed information such as line width and line spacing.
Process evaluation and optimization
Process capability assessment: Based on the manufacturing capabilities of the PCB manufacturer, evaluate whether the line width and line spacing, hole size, pad design, etc. in the design meet the requirements.
DFM optimization: Communicate with the client to optimize parameters and ensure that the design meets manufacturing feasibility, such as adjusting the line width and line spacing to avoid increased manufacturing difficulty, and reasonably selecting the aperture size, etc.
Typesetting and program generation
Layout design: Arrange the single-piece or multi-piece board data provided by the customer into a working layout based on the factory's process capacity to optimize the utilization rate of the board.
Drilling program generation: Modify the drilling data provided by CAM into a drilling program and provide it to the production line for use.
Film design: Based on the design, compensation and layout of the work order designer, and in coordination with the factory's process capabilities, design the work film for production.
Preparation of tools and fixtures
Forming program production: Based on engineering drawings, layout drawings and other documents, write forming programs for use by CNC machines in forming classes.
Test fixture production: Based on the electronic data of the customer's original draft, develop test tools and programs to ensure that the test board is consistent with the customer's design.
Second, key points of pre-production engineering
Accuracy of design documents
Ensure that design files such as GERBER FILE are accurate and error-free to avoid errors and rework during the production process.
Process feasibility assessment
Fully consider the manufacturing capabilities of PCB manufacturers and promptly communicate and modify any unreasonable aspects in the design.
Layout optimization
Reasonable layout can enhance the utilization rate of sheet materials, reduce production costs, and at the same time ensure stability and efficiency during the production process.
Data and program accuracy
Ensure that the generated drilling procedures, negatives, forming procedures, etc. are accurate and error-free, providing a reliable basis for subsequent production.
Communication and Collaboration
Pre-production engineering involves multiple departments and links, and it is necessary to enhance communication and collaboration to ensure smooth information flow.
