gantry type vertical machining center

At present, the development of CNC machine tools is changing with each passing day. High speed, high precision, compounding, intelligence, parallel drive, networking, and extremes have become the development trend and direction of CNC machine tools. Let's introduce in detail the six development trends of CNC machine tools in the future!

• High speed

With the rapid development of automobile, national defense, aviation, aerospace and other industries, as well as the application of new materials such as aluminum alloy, the requirements for high-speed machining of CNC machine tools are becoming higher and higher.

• Spindle speed: the machine tool adopts an electric spindle (built-in spindle motor), and the maximum speed of the spindle reaches 200000r/min;

• Feed rate: at the resolution of 0.01 μ M, the maximum feed rate can reach 240m/min, and the complex surface can be accurately machined;

• Operation speed: the rapid development of microprocessors has provided guarantee for the development of CNC system in the direction of high speed and high precision. The CNC system with 32-bit CPU and 64 bit CPU has been developed, and the frequency has been increased to hundreds of megahertz and thousands of megahertz. Due to the great improvement of operation speed, when the resolution is 0.1 μ m、01 μ The feeding speed as high as 24 ~ 240m/min can still be obtained at M;

• Tool change speed: at present, the tool change time of foreign advanced machining centers has generally been about 1s, and the high has reached 0.5s. Chiron company of Germany designs the tool magazine as a basket type, with the spindle as the axis and the tools arranged around the circumference. The tool change time from tool to tool is only 0.9s.

• High precision

The accuracy of CNC machine tools is no longer limited to the static geometric accuracy. More and more attention has been paid to the motion accuracy, thermal deformation and vibration monitoring and compensation of machine tools.

• Improve the control accuracy of CNC system: adopt high-speed interpolation technology to realize continuous feeding with micro program segments, so as to refine the CNC control unit, and adopt high-resolution position detection device to improve the position detection accuracy (Japan has developed an AC servo motor equipped with a 106 pulse / revolution built-in position detector, whose position detection accuracy can reach 0.01 μ M/ pulse), the position servo system adopts feedforward control and nonlinear control methods;

• Adopt error compensation technology: adopt technologies such as reverse clearance compensation, screw pitch error compensation and tool error compensation to comprehensively compensate the thermal deformation error and spatial error of the equipment. The results show that the application of integrated error compensation technology can reduce the machining error by 60% ~ 80%;

• The grid is used to check and improve the motion trajectory accuracy of the machining center, and the machining accuracy of the machine tool is predicted through simulation, so as to ensure the positioning accuracy and repeated positioning accuracy of the machine tool, make its performance stable for a long time, complete a variety of machining tasks under different operating conditions, and ensure the machining quality of parts.

• Functional compounding

The meaning of compound machine tool is to realize or as far as possible complete the processing of multiple elements from blank to finished product on one machine tool. According to its structural characteristics, it can be divided into two types: process compound type and process compound type. Process compound machine tools, such as boring milling drilling compound machining center, turning milling compound turning center, milling boring drilling vehicle compound compound machining center, etc; Process compound machine tools, such as compound machine tools for multi face and multi axis machining and double spindle turning centers.

The use of compound machine tools for processing reduces the auxiliary time for workpiece loading and unloading, tool replacement and adjustment, as well as the errors generated in the intermediate process, improves the part processing accuracy, shortens the product manufacturing cycle, improves the production efficiency and the manufacturer's market response ability, and has obvious advantages over the traditional production method with decentralized processes.

Searching for a gantry type vertical machining center from China, you can get high-quality products at a nice price.