Why are there 2, 3, 4 and 6 flute cutters? How to choose in practical applications? After reading this article on the selection of cutters have some help.
Theoretically speaking, the more the number of edges of the whole hard milling cutter, the higher its rigidity, the smaller the average amount of single-edge cutting, the smaller the cutting resistance. The more the number of edges, cutting vibration and noise will be reduced, product accuracy and better surface quality after processing, milling cutter life is also relative to the less edge of the tool will be extended accordingly. Does it mean that we must choose the milling cutter in the direction of more cutting edges? The answer is no, we still have to choose according to the material and process.
High hardness, high-precision processing, we still recommend the choice of multi-flute whole hard milling cutter, that soft materials or try to choose less edge. From the number of edges on the points it, single-edged milling cutter, for the material is generally non-metallic materials such as acrylic, under the knife to be sharp, very quickly cut into the cutting force is small.
Two-flute milling cutter, from a practical point of view, in fact, used less and less, generally the most common steel parts of some slotting, vertical direction of a feed milling chip removal is also relatively good.
Three-flute milling cutter is basically just used to do aluminum parts with more cutters, such as non-ferrous metal processing, large back angle, large spiral groove design, teeth are also relatively sharp, both to ensure the cutting efficiency, but also to ensure the surface quality of the processed surface, at the same time to allow space for chips, suitable for ring milling or side milling. 3-flute milling cutter in fact, you can also be vertically into the cutter, just a lot of manufacturers are reluctant to open the edge, it may be more troublesome.
4-flute milling cutter is now the largest and most common dosage, now more and more good processing equipment, not only to ensure processing efficiency, but also to have a certain chip removal performance, common steel milling accounted for more, it is a best choice, it is possible to realize the vertical direction of the feed.
Six-flute milling cutter cost is relatively high, the dosage is also relatively small. First of all, its chip space is small, the more the number of edges, the worse the chip removal, generally for high precision machining of high hardness materials, the corresponding requirements of the machine tool.
Heavy-duty cutting, high-efficiency cutting, try to choose a stronger clamping force shank, such as strong shank, or heat shrinkable shank, clamping can be as short as possible, otherwise it is easy to produce vibration knife knife let knife, or even broken knife.
Briefly summarize; 1, edge less roughing, edge more finishing; 2, aluminum alloy non-ferrous metal cutting tools, generally no more than three edges; 3, the current four-flute milling cutter dosage is the most, a lot of times roughing and finishing can be, more general.
A friend once asked me, he used a variety of milling cutters in the processing of glass fiber reinforced plastic, but the feeling is that the effect is not very good, friends with processing experience, welcome to leave a message in the background of the public number.