How to control the hard milling effect in the machining center of Longwo Machine Tool Factory? Hard cutting refers to the use of CBN solid cutting tools, CBN cutting heads, or ceramic cutting tools to machine hardened workpieces. Hard cutting is a new technology that can cut hardened workpieces. Hard cutting is a new technology that can cut quenched steel, gray cast iron, ductile iron, powder metallurgy, and special materials. Of course, some materials such as bronze are not suitable for hard cutting. Hard cutting can be used for turning, surface machining, tapping, milling, slotting, profiling, and cone turning.
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Generally speaking, we refer to steel with a processing hardness exceeding 56HRC or a strength exceeding Rm>2000N/mm2 as hard cutting.
Successful hard milling involves many factors. Today, let's learn together so that we can have a clear idea when encountering hard cut workpieces next time.
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Hard milled steel-63 Rockwell hardness, 6000 revolutions per minute, 100 inches per minute, 0.012 per pass (slope)
The most important consideration for hard milling is the structure of the machine. To achieve the desired hard milling effect, we need a very powerful machine with high damping capacity.
Hard milling CNC machine tools require rigidity provided by polymer concrete or granite processing bed and cast steel structure.
Generally speaking, machines made of polymer concrete have the buffering capacity of many machines made of cast iron. It is also important to have a numerical control system that can handle dynamic requirements of constant and rapid acceleration and deceleration.
Below are the spindle and tool clamping. Two completely different things, but one is closed and the other is not important. You need a rigid rotor with high and low rotational speeds. That is to say, combining a high-speed spindle with * cutting tools will produce unexpected effects. The HSK series tool holder may be one of the most popular tool holders in hard milling, as the interface with the spindle improves rigidity and concentricity.
Of course, we cannot forget the tool itself. If you do some research, you will find that there are many mold manufacturers who use specific tools for machining hard milling. But we cannot trust these parameters too much. Most of these mold manufacturers have experts who can help you choose materials and specific cutting tools. I suggest utilizing these services. The tool you have chosen for hard milling applications requires coating to withstand the high heat and extremely high friction associated with these materials, so please take the time to learn something.
This hard milling cutter, similar to Datron 8mm four edge end mills, has a cutting edge radius of 0.5mm and a coating thickness of 0.5mm, exhibiting excellent performance and durability.
Returning to the project. CAD/CAM software is a puzzle (if it doesn't work, the puzzle will never end). One of the most important considerations in hard milling is programming software, which can control the load on the tool. You hope that the loading of the tool is not affected, which means that cycloidal milling is performed sequentially or, as I usually say, dynamically. The principle behind dynamic milling related to hard milling is that your tool can easily and efficiently join materials. Not jumping too quickly, not steady. Currently, most mainstream CAD/CAM software packages have some form of
