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For many electronic companies with smt equipment, the introduction of the computer integrated manufacturing system cims into the SMT patch processing and production has improved product quality and the effective utilization of equipment, and greatly shortened the product design cycle and time to market. The economic benefits brought by cims to enterprises are obvious. It is believed that in the near future, the application of cims in SMT chip processing and production will become more and more extensive.
The application of cims in SMT patch processing and production
Many equipment in the SMT patch processing production line are computer-controlled automated processing equipment, which provides a complete possibility for computer-aided manufacturing to form a cad/cam integrated system.
The design departments of modern electronic manufacturing companies almost all use cad software for circuit design, and the manufacturing department also uses a large number of automated equipment such as placement machines, DIP plug-in processing plug-in machines, etc. for production, but these two departments rarely understand each other's needs, and many are useful Information cannot be shared, and two "automated" islands are often formed between enterprises.
With the intensification of market competition, customers require shorter product delivery cycles and control of production costs. There is an urgent need to establish a connection between these two islands in order to shorten production preparation time, strengthen defect analysis before production, and reduce products Rework. In order to connect the information flow between the "automation islands" of the CAD design system and production automation, and to remove the "partition wall" between product design and product manufacturing, only through the computer integrated manufacturing system (computer integrated manufacturing system, referred to as cims). accomplish.
Process CAD design files, improve the assembly accuracy, and greatly reduce the failure rate.
In the 1970s, American Dr. Joseph Harrington first proposed the concept of cim (computer integrated manufacturing). Its connotation is to integrate various manufacturing-related technical systems in the enterprise with the help of computers, thereby improving the ability of the enterprise to adapt to market competition. However, the system cims based on the CIM concept only began to gain attention and be implemented on a large scale in the mid-1980s. Cims is based on the database, and transfers the data in the design environment to various automated processing equipment through the computer network, and can effectively control and supervise these automated equipment. Use cims to establish the connection between the production department and the design department, which can be achieved through the integration of the cad/cam system. As mentioned earlier, many equipment in the SMT patch processing production line are computer-controlled automated processing equipment, which provides a complete possibility for computer-aided manufacturing to form a cad/cam integrated system. In fact, most of the data required for programming of processing equipment in the smt patch production line can be obtained from the relevant data files of the cad system. For example, the coordinate position, angle, physical characteristic parameter, electrical parameter, etc. of the component on the PCBA. The amount of these data is very large, and some characteristic data are required by different processing equipment. Such as placement machines, dispensers, and online testing equipment all require the coordinate position of the component on the PCB. Therefore, use the philosophy and technology of CIMS to establish a cad/cam integrated system between cad and cam, and directly extract, organize/transform and optimize the corresponding characteristic data from the data file of the cad system, and program the data format requirements according to the specific equipment Or the format of the n/c instruction is required to be transmitted to the control computer of the processing equipment through the computer network and interface communication software for direct call or direct drive of the numerical control processing equipment during programming. This not only saves data preparation and programming time, but is also straightforward.
Due to the characteristics of the production of the smt industry, it is more appropriate to use jit for on-site management. The combination of jit and tqc can reduce waste and improve product quality.
