Current Situation Analysis of High end PCB Drilling and Milling Machine Controller

The high-end CNC system is different from the general machine tool controller. It is mainly embodied in a more flexible and open architecture, faster response speed, higher control accuracy, and more user-friendly interface functions. It is also the key to the automation, flexibility, integration, networking, and digitization of the manufacturing industry. Compared with the fact that the numerical control system of middle and high-end metal cutting machine tools is monopolized by FANUC (Japan) and SIEMENS (Germany), the high-end numerical control system of PCB (Printed Circuit Board) board processing industry is a relatively realistic breakthrough, and the rapid development of electronic and information technology makes the PCB industry optimistic for a long time, The domestic high-end CNC system has the potential to break the long-term lag behind Germany and Japan in the multi axis CNC system. At present, some special machine tools for PCB in Chinese Mainland and Taiwan are developing very fast, but the high-end CNC technology is mainly based on the CNC84 series products imported from Germany SIEB&MEYER. Although equipment manufacturers have never given up their efforts to develop and replace the CNC84 system independently, it has never been to the point.

In order to break this technological monopoly, the author deeply investigated the current market and technological status of controllers in the PCB drilling and milling field, analyzed the reasons for this gap, and made use of the accumulated experience in the PCB industry for many years, while touching the most advanced computer and information technology, to create a truly international level CNC system, hoping to break the monopoly of foreign systems in the PCB machining process field, Then gradually ban foreign similar products, allocate manufacturers of PCB drilling and milling machine equipment, and apply them to the two important links of drilling and milling in the PCB production process (these two types of equipment account for more than 60% of the investment in the whole production line), so as to make the core technology localization, improve the embarrassing situation that the production equipment of China's circuit board industry has been in the "assembly workshop" of foreign manufacturers for a long time, and enhance the position and profitability of the entire industry in the industrial chain.

Analysis of the status quo of high-end drilling and milling machine controller

The production and manufacturing of PCB board has gone through a process of transition from Europe and the United States to Japan and South Korea, then to Taiwan, and finally to Chinese Mainland. Along with this process, PCB equipment manufacturers also show the same regional characteristics, but there is a certain degree of time lag. So today, the equipment manufacturers in the United States and Europe are gradually declining, and they are replaced by rising stars in Japan, Taiwan and even Chinese Mainland. At present, the supply of high-end drilling rigs is about 5000 units per year, of which Hitachi, a Japanese company, accounts for nearly 30% of the market share. However, it sold its drilling machine business not long ago. In the past 2013, its performance was poor. Taiwan's Dongtai, Longze, Dada, Ender, etc. accounted for 30-40% of the market share, and the rest was divided by European manufacturers and emerging mainland manufacturers. Among these machine tools, except for Hitachi, a large number of Taiwan, POSALUX (70~80 units) in Switzerland and SCHMOLL in Germany (which reached an unprecedented 1300 units in 2013 due to Hitachi's weakness), most manufacturers' machine tools are equipped with SIEB&MEYER products.

1 Introduction to CNC84 system

With the decline of American EXCELLON, the earliest drilling rig manufacturer, SIEB&MEYER, located in Hamburg, Germany, has an excellent opportunity to introduce and improve the CNC system applied to PCB machining process with the cooperation of HITACHI. With the subtle changes in the German Japanese relationship, SIEB&MEYER's products were finally separated from Hitachi's machines and developed independently. The CNC84 system is its latest product, with powerful software technology and processor technology. In addition to supporting the advanced real-time communication network protocol SERVOLINK, it can also support the latest motor control mode, a new type of full digital servo control system based on AC permanent magnet synchronous motor, The space vector control scheme is adopted. The position control system consists of an inner current loop, a speed loop and a position outer loop. The algorithm adopted is realized by corresponding modules, including: PARK conversion module, CLARK conversion module, anti PARK conversion module, anti CLARK conversion module, speed calculation module, position calculation module, PI regulation module, space vector PWM generation module, current feedforward module, etc. Based on the progressiveness in the field of overall process solutions and control technology, SIEB&MEYER's products have shown excellent performance in production practice. Although its flagship product, CNC84 system, was launched in early 2005, it has become the most famous drilling system in the world at present. It is powerful and beautiful. At present, the main high-end drilling equipment in the mainland and Taiwan are equipped with this system, It accounts for half of the whole PCB drilling system.

2 Current situation analysis of Taiwan and the mainland

The situation in Taiwan is relatively simple. Most PCB manufacturers of equipment have selected SIEB&MEYER products. The situation of the mainland is slightly complicated, which is generally divided into two regions and three levels. Let's start with two regions, namely the Sichuan system and the coastal system. Sichuan is the first place to develop PCB production equipment in China. However, due to the geographical and technical double barrier, the products are relatively low-grade and are basically not included in the statistics of high-end machines. The coastal area mainly refers to the Pearl River Delta region. Because the technology of Europe, the United States and Japan is directly used for reference, the starting point is very high, and the development is fast. A number of more powerful equipment manufacturers have emerged.

The three levels are divided according to the technical performance indicators of manufacturers' PCB products: the manufacturers at the first level either completely select the CNC84 system, such as Taiwan Dongtai, Longze, Ende, Suzhou VEGA, etc., or adopt a two legged approach, that is, high-end products, such as six and seven head machines, use the CNC84 system to ensure performance and functions, and low-end products, such as drilling and milling machines with less than four heads, use a simple system developed independently to reduce costs, Typical manufacturers such as Han's CNC in Shenzhen; The manufacturers at the second level developed the system independently because they refused to accept the high price of the CNC84 system, but this kind of system can only meet the simplest functional requirements. Many intelligent functions and operation management have not been realized, and they still basically stay in the stage of manual workshop products, which cannot pose a substantial threat to the products of SIEB&MEYER. Such manufacturers, such as Huizhou Tianma and Shenzhen Qianghua, despite some characteristics of the mechanical part, However, due to the lack of CNC system, the performance and price of the whole machine have been discounted; The third level is the lower end equipment manufacturers. Machinery, electrical and software are all the lowest end configurations. They live in a more recessive market space. The authoritative machine tool statistics are not reflected, but there are a lot of them.

Based on the situation at home and abroad, Germany's Xibemaiya operating system, the world's most famous PCB drilling machine system, is powerful and perfect. Germany's Xibemaiya operating system, the world's most famous drilling machine system, is powerful and perfect. It can be seen that the current German SIEB&MEYER's CNC84 system is unique in the industry, especially in the field of high-end equipment numerical control, so it naturally becomes a benchmark and object of transcendence for everyone to follow. If we can independently develop a system that is equivalent to the technical level of the CNC84 system, and then rely on the natural advantages in terms of human cost and after-sales service, we can not only compete with SIEB&MEYER for the first level customers, but also win and promote the PCB manufacturers at the second level.