Second, the milling is the main type 1. The multi-axis A and five-axis control of the machining center, in addition to the X, Y, Z three-axis control, in order to adapt to the change of the tool posture, the feed axes can be rotated to a specific angular position. And the positioning of the five-axis processing machine. There are two ways to use the five-axis machining machine: 1. Indexing the rotary axis to tilt the workpiece relative to the tool, and performing three-axis control processing in this state. 2 At the same time, all the control axes are continuously moved, that is, five-axis linkage, and the workpiece having an outer curved surface shape such as an impeller can be processed. The five-axis linkage processing machine is characterized by the ability to avoid machining conditions where the cutting speed becomes zero; it is possible to use a tool with a short extension length; it is possible to machine a workpiece with an extended surface shape in one setup.
B, six-axis control, multi-axis control milling machine can not simulate complex shape workpiece processing, and composite processing can. For example, for the machining of workpieces with a tapered shape and a square-shaped groove, it is impossible to complete the machining without changing the machining work, and the workpiece must be transferred to an electric machining machine. However, if a rotary tool is used to make the tool perform a 6-axis control motion while performing a swing cutting process, the machining can be performed on one machine. Moreover, accuracy and efficiency can also be improved. If a non-rotating tool is used, the rotary position of the rotary spindle must be controlled, and six-axis control is necessary. When using six-axis control machining, when using non-rotating tools, the cutting speed is equivalent to the feed speed, and high-speed machining is not possible. With the rotary cutter, it can adapt to the processing of the original unprocessable parts and shapes, without conversion work, only cutting. It is possible to complete all the processing at one time with high efficiency.
2. In addition to the milling process, the machining center is equipped with a power rotary table that can be turned.
The milling machine is mainly made up of the INTEGREX e800V/5 five-axis horizontal milling center of Japan MAZAK. It is based on the five-axis horizontal machining center, which makes the rotary table add turning function and can be installed under one loading. Car and milling are completely processed for round parts; the NTXI milling compound center of Milanese, Italy, adds a turning spindle to the right end of the vertical machining center.
Third, the ground-based multi-axis of <br> <br> grinder, the original is visible only in the centerless grinding machine, the majority is for the purpose of loading and unloading automation. Now, a multi-tasking machine that can complete inner, outer and end grinding on one machine is developed. For example, in Europe, a multi-tasking machine with integrated thread and spline grinding functions has been developed.
The representative of this type of compound machine is the MGR vertical grinding and grinding machine of MAGERLE of Switzerland. There are multiple grinding heads and one tool holder on the top of the machine. It can grind and finish the parts. Mori Seiki Co., Ltd. The IGV-3NT grinding head can be used for rotary vertical grinding machines, which can process the inner and outer parts and end faces of the parts under one loading. STUDER's S33 universal CNC grinding machine can realize multi-thread threading and internal and external processing under one loading. Round and end face machining.
S33 universal CNC grinding machine from STUDER, Switzerland
Fourth, the combination of different types of processing
Intensive processing types of various different principles, such as cutting and grinding, grinding composite; laser processing to combine post-processing heat treatment, welding, cutting; processing and assembly at the same time. In addition, the unique production-type multi-tasking machine with centralized turning and milling functions, especially the gear processing function; combined with laser processing, has developed a composite machine tool with grinding function and laser quenching function. In Europe, we have also developed intensive composite processing machines such as mechanical milling functions and laser three-dimensional machining functions.
The development trend of composite processing technology Composite processing technology is the development direction of future machining. With the continuous development of various fields of society, the requirements for the field of machining are also constantly improving. The "three high" processing of high speed, high precision and high efficiency is the basic requirement for future machining, and the traditional processing concept is It is difficult to meet this requirement. Therefore, the field of machining requires continuous breakthrough of traditional concepts, continuous improvement and improvement of processing technology to meet future requirements, and composite processing technology just meets this requirement.
Today's composite processing technology is developed to a compound turning and milling machining center based on an ordinary CNC turning center and machining center. This requires that the machine tool manufacturing industry should develop, manufacture, stabilize and promote high-level machine tools with high efficiency, compounding, stability and low cost suitable for modern processing technology based on the existing technical level.
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