Most of the current control systems can be traced back to the root of this system, that is, it has a history of 30 to 40 years. One of the bottlenecks was the download speed of the RS-232 connection. The program segment reading speed of this type of control system can reach 5000/s program segments. For many parts, this speed is enough, but for complex parts, the required speed is much higher. When Mr. Carlo Miceli of MTI began to develop his own control system, he adopted a new method for PC language logic and effective information processing. Its product is a CNC system based on modern PC hardware, equipped with a new tool path algorithm, and its reading speed reaches more than 5000/s program segments. GBI Cincinnati said that its results have met the requirements of "constant speed" processing, and its production speed is fast and the feed rate is very stable.
The machine tool combines the rapidity of modern control technology with the precision of machine tool movement to form a real constant speed machining system. The control system of the machine tool may become an obstacle to shorten the machining cycle and improve the finish of complex 3D models, aerospace parts or medical device elements. When the processor cannot keep up with the program running speed, the driver will reduce the feed speed of the tool due to the urgent need for information, thus prolonging the processing cycle, resulting in the uncoordinated operation of the tool. In order to replace worn and overloaded tools, in addition to increasing the number of tool runs to the tool library, it will also affect the effective use rate of the spindle, increasing the workload of fitters and finishing time.
When the speed (feed rate) is unstable, some problems will occur. When the tool runs through the part processing, its uneven movement will cause different loads on the cutting grooves on the tool, thus affecting the machining accuracy and surface finish. If the running speed of the tool is not fast enough to maintain the minimum cutting load of the tool, friction will occur between the tool and the workpiece instead of cutting, and the unstable motion of the tool will shorten the service life of the tool. Such operation mode will also cause a small amount of fracture notch of the blade, making the tool hot and blunt. However, with constant speed machining, the average processing speed of the tool through the workpiece will be more uniform and the processing accuracy will be higher, which can not only shorten the processing time, but also extend the service life of the tool.
In the "revolutionary" series of machining centers, MTI's control system will not generate excessive stress related to high-speed machining, allowing fluid tools to operate on the geometry of complex parts.
In the process of program execution, the result of high-speed program segment processing is that the random error of the control system can be monitored and adjusted stably, so that the tool can run at a uniform speed and achieve a perfect surface integrity. The system uses more than 80 high-speed buffers to monitor the operation of the tool. If the random error is exceeded, the motion of the tool can be adjusted immediately.
Even when machining very complex shapes, it is said that the speediness of the control system, the fine adjustment of the driver and the processing of the tool path can achieve the goal of fast and accurate program execution.
