Under the premise of ensuring the safety and environmental protection of mechanical products, the high productivity, high quality of the equipment, and the ability to reduce labor intensity have always been the three major goals of people's pursuit. The continuous innovation, development, improvement and renewal of any mechanical product is always accompanied by the development trajectory of printing machinery.
With axis, without axis, CNC
In order to maintain the synchronization and regular movement between the units, the basic characteristics of the drive are: the power source drives the transmission elements of each unit through a long shaft, and then drives the execution elements of the equipment through the transmission elements to complete the equipment input 3. Output task. This is the traditional "shaft drive" of printing machinery and the most basic transmission principle. With the development and application of contemporary CNC technology, the conditions for canceling this long axis have been fully mature, that is, each printing (or function) unit is driven by one or several servo motors, which can also meet the requirements of printing. The industry often refers to "shaftless technology", "shaftless drive", "electronic shaft drive" or "independent drive" as the concept.
From the perspective of standard specifications, the reference to "shaftless" transferred from a shafted drive is not scientific enough, and people in the circle understand that other industries sound like a monk. Therefore, I suggest that it is better to call it "CNC technology".
As we all know, the largest in China's machinery manufacturing industry is the automobile manufacturing industry, which reflects the comprehensive technical level of the machinery manufacturing industry, high-volume production programs and the pursuit of maximum profits, and the production process has been highly automated. At present, a large proportion of CNC machine tools, machining centers, and FMS (flexible machining systems) are facing the automotive market. The state-prioritized machinery manufacturing industry also has key equipment and machine tool industries, which reflect China's ability and technical level to provide equipment to key industries such as national defense, aviation, shipbuilding, automobiles, and power generation. These DC servo motors are the development process of AC servo motors. Modern machine tools have gone through programming to achieve automatic machining of more than three coordinate axes of CNC machine tools-machining center machine tool automatic tool change processing-the first generation of FMS (the use of exchange worktables to achieve automatic flexible processing of multiple devices)-the second generation FMS (Automatic Stereoscopic Library and Automated Flexible Processing of Multiple Devices)-The third generation of FMS (Automatic Stereoscopic Library is cancelled and industrial robots are used to automate the entire processing process). The common features of these three generations of FMS flexible systems are. While realizing the human ideals of unmanned chemical plants' CNC technology is widely used, another trend in the development of CNC machine tools is the emergence of composite machine tools. The processing range of machine tools has been further expanded, resulting in composite machining of turning, milling, boring, drilling and grinding. In the center, the technological process of parts processing is greatly shortened. Some entrepreneurs boldly put forward: one person, one compound machine tool is one factory, one car engine box assembly, all milling, boring, drilling, expanding, tapping, etc. can be completed on one car and milling machining center. Car and other processes, a flame CNC cutting machine can manufacture a small bridge.
The technological development of printing machinery and equipment is bound to follow this path. From the earliest invented engraving printing to humans, to the invention of movable type printing technology, and then to the invention of metal type letterpress printing machine of Königsbauer in Germany, it also experienced several hundred years of improvement before reaching the advanced level of contemporary printing machines. Take the web printing machine as an example, review the history of modern science and technology development. A similar conclusion can be drawn. In the early 1930s, sheet-fed letterpress printing machines had become the main force in the printing industry. Due to the discontinuous printing process, the increase in printing speed was limited by the structure of the equipment, and the increase in speed was restricted. A continuous printing press appeared , To greatly increase the printing speed. The power source of the sheet-fed printing press is a mechanical inorganic variable speed mechanism. Most of the equipment uses slip motors. The power source of the web printing press is powerful. Stepless speed regulation requires the use of a new power source. DC motor and SCR speed control. After realizing the automation of the printing process, this equipment has successively solved the automation of paper control, folding, paper transfer, paper collection, registration, plate-up, cleaning and other operations. However, web printing presses still rely on one or two parallel power sources to drive various movements and functions of the entire device through a long axis.
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