MF5 chamfer -- the geometrical angle element of cutting tool

When undertaking assess to the value of bit when the attempt, need knows to process a few businesses in the process. Above all, the function of bit is pledged by the material of hard alloy grade decides, and material qualitative grade must be chosen by the person that use according to workpiece material. This is both the general character between is cutting speed. Cutting speed and hard alloy material pledge grade is two parameter that consider its to cooperate each other when the choice. Next, the function of bit special also depend on its geometry angle, and the treatment kind that the geometrical angle of bit must have according to place will choose, be like rough machining or finish machining. The general character index here is the cutting operating mode related geometrical angle (feed and cutting deepness) . In the article, the correlation between the geometrical point of view that I think to emphasize cutting blade and the treatment kind that how build geometrical angle and cutting deepness, feed and place correctly to undertake concerns. The geometrical angle of razor blade of hard alloy of geometrical angle type has two kinds of basic kinds. The first kind is called microcosmic geometry angle or a kind of sharp microcosmic geometry angle, it is apart from cutting blade very close. Forming cut bits that momently, the geometrical angle that relies on this part will bend, break off and excise. Of these models " F " groove generate short cut bits. The mechanical intensity that resembles such cutting blade is quite finite -- each thing is centrally on cutting blade, raised brittleness. This asks we are using this sort model groove time limit makes cutting deepness and feed. The main type of angle of another kind of geometry is called rough machining chamfer model or " R " groove. Rough machining chamfer large dominant position is it makes the strength of cutting blade better; Defect is we make a bits freer, generate longer cut bits. The most interesting geometry point of view is " F " and " R " groove combination. In hill tall, the groove that we set these call " M " groove, for example new MF5 chamfer. Had these chamfer model, we try to find machine intensity and the good ability that break bits as far as possible first-rate combination. No matter we offer what kind of chamfer model, we always can let it work, want us to abide by operating mode of a few concerned cutting only (namely cutting deepness and feed) basic principle. The basic principle of cutting deepness is the radius of circular arc of point of a knife that it cannot be less than bit absolutely. For example, if you are used the round horn of point of a knife of bit is 0.

8mm, deepness of the smallest cutting should be normally 0.

8mm. But, when finish machining, we must accept this to always be generated grow the natural tendency that cuts bits, because our dosage restricts a cost under this. The cutting deepness of the choice also cannot too tall, the risk that because we can risk bit machine,bear overloads will bring about bit finally to destroy. Basic principle is the effective length that cutting deepness cannot exceed cutting blade absolutely (to be like " V " the razor blade with brittler and so on of form razor blade, we must reduce that numerical value further) . To a razor blade, another issue that we must consider is feed. Normally, the maximum of feed is the half of the radius of circular arc of point of a knife of bit. For example, if you have the radius of circular arc of point of a knife of a kind of razor blade,be 0.

8mm, the feed that normally we use absolutely cannot prep above 0.

4mm. Razor blade of the blade that repair light to so called " Xiu Guangren " the demand of bit is increasing ceaselessly. Xiu Guangren offerred the possibility that overcomes limitation of this kind of feed to be able to apply taller feed (with lesser cutting deepness) , although bit has radius of lesser circular arc of point of a knife. Remember well, need to seek to live on when you yield is the biggest when changing, this is very important. Feed cannot too small, because of cutting blade will cannot cutting and treatment immediately is decreased for attrition process. To certain " F " groove, we can obtain low-down feed, because these cutting blade are,undertake be developinged technically in the light of low-down feed. Another very main factor is the ratio between cutting deepness and feed, in order to obtains figuration to cut bits goodly, be like not quite long not quite short also cut bits. The ratio of cutting deepness and feed also should be in a certain limits. Be based on the imperial and metric long stuff that cut bits, the ratio of cutting deepness and feed should be in 5 to 15 between. Normally, we think the good specific value of cutting deepness and feed is about 10. For example, if we had chosen feed,be about 0.

3mm, the ideal cutting deepness that with its union uses will be 3mm. Good specific value is all these consider a factor, should be put on a piece of graph together, it is us the graph breaking bits with most client hep place. Cutting deepness cannot too tall also cannot too low; The ratio of cutting deepness and feed should be adjacent form the good position that cuts bits figure correctly, and this both numerical value cannot too tall, because otherwise the risk that we will risk bit to destroy. Look to snap bits picture, you can see forthrightly how to solve bits problem. If you are exceeding range in these used parameter, the problem will arise. Of course, the influence that geometrical angle machines to turning has a lot of content to be able to be told. The geometrical angle of cutting blade is the geometrical angle of cutting blade itself, chamfer that break bits summation with angle of geometry of point of a knife. The optimal combination that chooses geometrical angle correctly offerred a lot of kinds of feasibility to optimize a choice further. If user hope is again forward,one pace needs the bit that technology of a few courses optimizes fitly, be like,this is used possibly also MF5 such new chamfer. In cutting area, we see " MF " groove showing it is a kind of quite sharp chamfer model; Use the bit of this kind of type, the parameter related cutting force and those and cutting force is relatively inferior. This kind of sharp cutting blade and a kind we call " R " groove geometrical angle photograph is united in wedlock, be in those who be apart from cutting blade very millimeter place. It is a kind of geometry point of view that offers a few spaces to cut bits to be formed smoothly, the cutting force that reduced action to go up in cutting blade further. In this respect, MF5 chamfer it is a kind of mechanical intensity quite good and we give more determinism when choosing cutting deepness and feed, the result makes cutting force smaller. When turning, this is the case of a kind of very fetching attention, because we return the risk that reduced vibration further, we need not need too much power to make bit works, and we also are done not have too much let workpiece or cutting tool generation curve metabolic risk. If we forward the point of a knife of bit views the past, we can see two small protruding tables, it cuts bits to be spent from the freedom of the eduction on cutting blade through limitation will offer the good control that cut bits. Going up to offer mysterious advantage for us somehow in the stage of those two protruding on face of the knife before bit; With the pressure of cooling fluid union is together, they forward direction of point of a knife pushs the past, form a kind " pressure cabin " . We can see cooling fluid can enter pressure cabin, additional pressure is generated to keep abreast of on the base that cuts bits one pace carries his litre. This pressure is helpful for those who cut bits breaking off. This is us the chamfer that sees this kind of kind for the first time, and this affirmation meets those who be treatment optimize offer very big advantage. Plant through using this groove, had generated grow the risk that cuts bits to be reduced greatly. If be used by correct ground, the cutting geometry point of view that we devise inside MF5 is to be aimed at the modern mind that the metal machines to undertake " custom-built " . CNC Milling