At the national 863 projects with the support of Tsinghua University and Qiqihar second Machine Tool (Group) Company has successfully jointly developed China’s first heavy-duty hybrid machine tool XNZH2430. The machine has a completely independent intellectual property rights of research and core technology is in the “high-grade, sharp” significant numerical control equipment, developed a breakthrough.

According to reports, the successful development of the machine to fill China’s heavy-duty hybrid machine tool developed in the field blank, for enhancing the structure of China’s new heavy-duty CNC equipment design and manufacture capability is of great theoretical significance and practical value.

It is understood that, XNZH2430 heavy-duty hybrid machine tool is a critical foundation for China’s manufacturing industry equipment needs, focusing on high technology and process large and complex turbine blades, propeller blades and other complex parts machining for surface class developed. The machine from software development to hardware manufacturers, not only to meet the above-mentioned parts of the surface machining, but also for military, aerospace, marine, power generation equipment, and mold manufacturing industry, the key to precise parts of the large-scale three-dimensional surface machining.

Parallel Machine Tools (also known as virtual axis machine tool) is the late nineties of the last century the emergence of a new type of structure, machine tools, known as the 21st century, new processing equipment, which overcomes the traditional shortcomings inherent in the structure of serial machine tools, in the same scale ranges , with modular high degree of rigidity is good, moving parts, light weight, acceleration of large, easy to adjust the precision machining and processing high precision, enabling multi-axis CNC machining. The hybrid machine tool are concentrated series of parallel machine tools and machine tools with their respective advantages, these advantages have a parallel machine tool, while machining with the series features a large work space, making hybrid machine tool can be applied in the manufacturing sector continuously.

Precision Instrument, Tsinghua University, Department manufacture of advanced manufacturing equipment, laboratories in the development process of parallel machine tool in China achieved remarkable results, has made dozens of patents and scientific research, in the new structure of machine tool design has accumulated a wealth of experience. In the nineties of the last century the international study of the initial stage parallel machine tool, laboratory on the successful development of our country alone, the first STEWART-type parallel machine tool VAMT1Y, followed by machine tools and other units with the Qi two collaborative R & D success XNZD2415, XNZD755 and many other units, and (mixed), in collaboration tools, and to achieve practical application in production.

XNZH2430 heavy-duty hybrid machine tool with a large work space, achieving change head, can shift, and milling head features such as automatic identification control system has a good operational performance. Machine tools, the main part of the increase by two degrees of freedom parallel mechanism composed of a moving table, two columns constitute the Canadian arm of parallel institutions to promote spindle box realization of Y / Z 2 direction of movement to achieve X direction of table movement, X , Y, Z3 mobile direction of maximum processing space: 8000mm � 3000mm � 2500mm. Machine tools, processing of the remaining degree of freedom from installed in the spindle box below to complete the milling head can be exchanged milling head are three: A / C-axis pendulum angle milling head, vertical milling head, right angle milling head. Using the A / C-axis milling head yaw angle when the direction of rotation of the processing can increase the two degrees of freedom to achieve the range of the corner of processing: A-axis yaw angle � 95 �, C-axis rotation � 185 �, this time machine can be achieved Five-axis, be able to complete the full-size space in a complex surface machining. In the exchange with the legislation and the right-angle milling head milling head, then to complete the general all the features of CNC gantry milling machine, has good versatility. Another machine tool spindle box with a low, high-speed 2 gear, the need for automatic gear change according to the machining, spindle box at the same time to connect the arm parallel mechanism, the spindle motor and the milling head, clever design can box, while ensuring high-speed mobile spindle drive smooth transmission chain.

Reportedly, the machine control system developed by Tsinghua University VACS6 machine tool control system, this system development based on the linux platform, with high real-time, to meet the fast-axis machining when six real-time control needs. VACS6 control system can also identify the current milling head according to the information automatically load the corresponding control modules, access to the associated user interface, greatly simplifying the procedures. In order to ensure high-precision processing, the control system can be completed, after calibration of machine tools to easily control algorithms used in machine tool structural parameters be modified to compensate for the current error.

The industry believe that, XNZH2430 heavy-duty hybrid machine tool successful development indicates that China has in the heavy-duty high-precision processing equipment, a breakthrough will surely promote China’s heavy-duty high-precision machine tool developed by the development of better and faster.

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