In modern mechanical cutting technology, high-speed cutting is being more and more mentioned, and its technology has begun to be used. With the first, high-speed machine tools, what is the high-speed cutting and traditional cutting technology? What is the difference? What are the conditions for its implementation? What are the benefits of achieving it? How about its applicability?
(1) Due to the small depth of cut and thickness, the cutting amount of each edge of the tool is extremely small, so the force of the machine tool spindle and the guide rail is small, the precision life of the machine tool is long, and the tool life is also prolonged.
(2) Although the cutting depth and thickness are small, since the spindle rotation speed is high and the feed speed is fast, the amount of metal removal per unit time is increased, and the machining efficiency is also improved.
(3) Roughing, semi-finishing and finishing can be integrated into one machine, all of which are completed on one machine, which reduces the number of machine tools and avoids the error caused by multiple clamping.
(4) It can process high hardness and difficult to process materials (up to 62HRC), and can drill small holes of ø1mm or less.
(5) The most important thing is that the processing time is short and the economic performance is good.
High speed cutting applications
At present, high-speed cutting is no longer a technology in the laboratory, it is more applicable to the following aspects.
(1) Thin-walled processing of non-ferrous metals such as aluminum, aluminum alloys, and especially aluminum. It is now possible to cut a formed curved surface having a thickness of 0.1 mm and a height of several tens of millimeters.
(2) Graphite processing. In the cavity manufacturing of a mold, a graphite electrode is widely used because of spark erosion processing. However, graphite is very brittle, so high-speed cutting is required to perform the forming process well.
(3) Machining of molds, especially hardened molds. Since the hardened material can be purchased directly from the supplier, the high-speed cutting can directly cut out the mold, which not only saves several processes of machining and electromachining in the past; saving man-hours and also due to the current high-speed cutting High surface quality (Ra ≤ 0.4 um) has been achieved, thus eliminating the need for grinding and polishing after electromachining; on the contrary, the compressive stress state of the machined surface formed during cutting also increases the surface of the mold workpiece. The degree of wear resistance is statistically said to increase the life of the mold by 3 to 5 times, so that it is possible to perform the machining only by milling and forging.
(4) Hard, difficult to cut materials, such as heat resistant stainless steel.
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