Application Guide for Turn-Mill Machining Centers

Turn-milling CNC machine tool machining center technology
Turn-milling CNC machine tool is a typical turning-milling compound center with high precision, high efficiency, high rigidity, high automation and high flexibility. The turning-milling compound CNC lathe is an advanced compound machine tool consisting of a five-axis linkage milling machining center and a double-spindle lathe. It provides a better solution for the processing of small parts with high precision, high quality and high complexity.

With the rapid development of science and technology in the world, many products are developing in the direction of precision, miniaturization and light weight. Many small precision CNC machine tools often need to meet the needs of users. In the current Chinese machine tool products, there is still a lack of such precision CNC machine tools. In addition to being widely used in the watch industry, medical equipment, auto parts manufacturing and other light industries, it can also be used in aerospace, weapons, ships and other defense and military industries to process many precision special parts, such as flight control gyroscopes, air-to-air missile inertial navigation, etc. The zero position machine is a high-quality machine tool on the market suitable for small precision and complex parts.

Turn-mill machining center has no special requirements on the machine tool, but must provide at least one Y-axis movement. The rotation of the workpiece provides the c-axis motion for the milling cutter to deliver the required feed rate (power). However, the cutting speed of the workpiece is measured with the IPM and not the SPM of the lathe (which means that the workpiece is cut at a much lower speed in a turn-mill center than it would be in turning). But the movement of the y-axis is necessary because the milling cutter has to do a lot of eccentric machining. Moreover, when the tool is eccentric, the required part size cannot be machined, because when the tool is in the center, the tool center intersects the rotation center of the part, so the tool can only cut with its end face (that is, cannot cut), but cannot cut. trimmed. In order to ensure that the cutting edge can cut correctly, the tool centerline must be offset from the part rotation centerline to 1/4 of the tool diameter.

There are the following three types of tools that can be effectively used in a mill-turn machining center. The main reason is the use of wiper blades or blades. For end mills in turning and milling, large flat surfaces or heavy interrupted cuts can be made. Step milling uses an insert end mill. Solid end mills are used for machining cylindrical parts and precision milling deep and narrow grooves. With the scraper structure of the above-mentioned tool, two of the four cutting edges of the tool can pass through the deep part of the cutting part, thereby realizing high-efficiency and high-precision machining.

But with this method, problems arise when the tool approaches both sides of the step and groove. At this time, after the eccentric tool is processed, many rounded corners will be left on the surface of the part. To remove these fillets, the tool must be machined again. The tool offset is no longer needed at this point, and the tool moves along the Y axis to the center of the part for machining. However, such machining allowances are not allowed in some machining steps (sometimes metals are not allowed).

An unsatisfactory fact in the machining of turn-mill machining centers is the shape error of the machined parts. When the milling cutter is milling around the part, it is inevitable that some fan marks will be formed on the surface of the part at certain intervals. This error cannot be completely eliminated, but it can be effectively controlled with wiper blades. A wiper blade follows the other blades, so that the blade edge is slightly convex in the width direction, so that the blade edge of the blade just extends to the surface of the workpiece, and a new cutting surface is machined, and the slight fan-shaped trace is smoothed.

DONGGUAN YIFENG METAL CO.,LTD is mainly engaged in the production and manufacture of non-standard precision hardware parts. It has been deeply involved in the industry for many years and has rich experience. If you need CNC machining, CNC turning and milling, and five-axis machining services including aluminum, copper, stainless steel, iron, titanium alloy, plastic and other products, you can contact DONGGUAN YIFENG METAL, we will provide you with integrated solution.

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