The turning milling compound 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 lathe composed of a five axis linkage milling machining center and a dual spindle lathe. It provides a better solution for machining small parts with high precision, high quality and high complexity.
With the rapid development of science and technology in the world, many products are moving towards the direction of precision, miniaturization and lightweight. 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 light industry fields such as clock and watch industry, medical equipment, automobile parts manufacturing, etc., 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 gyroscope, air to air missile inertial navigation and other zero position machines. It is a high-quality machine tool suitable for small precision and complex parts in the market.
The turning milling compound machining center has no special requirements for the machine tool, but it must provide at least one Y axis movement. The rotation of the workpiece provides the milling cutter with c-axis movement to transmit the required feed speed (power). However, the cutting speed of the workpiece is measured by IPM instead of the SPM of the lathe (which means that the cutting speed of the workpiece in the turning and milling machining center is far lower than that in turning). But the y-axis movement is necessary, because the milling cutter needs 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 use its end face to cut (that is, it cannot cut), and cannot cut. Trimming. In order to ensure that the cutting edge can cut correctly, the tool centerline must deviate from the part rotation centerline to 1/4 of the tool diameter.
There are three kinds of tools that can be effectively used in turning and milling machining centers. The main reason is the use of wiper blades or blades. The end mill in turning and milling can be used for large size plane or heavy intermittent cutting. The end mill with blade is used for step milling. Integral end milling cutter is used for machining cylindrical parts, and precision milling deep grooves and narrow grooves. The scraper structure of the tool can be used to cut the deep part of the part through two of the four cutting edges of the tool, so as to achieve efficient and high-precision machining.
However, with this method, problems will occur when the tool approaches both sides of the steps and grooves. At this time, after machining with eccentric tools, many fillets will be left on the part surface. In order to remove these fillets, the tool must be machined again. At this time, the tool deviation is no longer required, and the tool moves along the Y axis to the part center for processing. However, such machining allowance is not allowed in some processing steps (sometimes metal is not allowed).
An unsatisfying fact in turning milling compound machining center is the shape error of machined parts. When the milling cutter is milling around the part, the part surface will inevitably form some fan-shaped traces at certain intervals. This error cannot be completely eliminated, but it can be effectively controlled with the wiper blade. A polishing blade is closely followed by other blades to make the blade slightly convex in the width direction, so that the blade just extends to the surface of the workpiece to be machined, and a new cutting surface is machined with a slight sector trace smooth.
