But of dislocation cutting tool choose

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Market economy is advanced ceaselessly, contemporary company is in the pursuit process of high end and low cost, already changed a tradition gradually " big and complete " , " small and complete " mode, those who replace is in order to throw most diminutive force, material resources achieves the biggest beneficial result " theme " production. Reflect in domain of metallic cutting cutting tool, cost already was the simple fare that buys cutting tool no longer, on one hand, quality of efficiency of the type selecting that uses what kind of cutting tool to be able to affect product craft, machine tool and configuration, production, product, get consequently more and more attention; On the other hand, abstain cutting tool whether be to one's profit? The investment of manpower material resources also becomes the issue that the enterprise considers. The cost accounting of enterprise interior advanced those who produce a course to specialization service. Accordingly, to general machining company, the configuration of cutting tool, more it is how to be chosen, how to use, is not how designing with make on. 1. But the general principle that dislocation cutting tool chooses but dislocation cutting tool already had corresponding ISO standard and GB state level by craft category, standard with a certain number of specific English letter code and arabic numerals combination, show each feature of this cutting tool and measure, need to machine craft category certainly before the choice, namely outside round turning, inside aperture turning, grooving, milling, other still. Round turning is beyond exemple: Graph the choice of the means of clamp of means razor blade of clamp of 1 razor blade is in national level, general clamp means has on press type (code is C) , on pressure with the clamp that sell aperture (the code M) , clamp that sell aperture (code P) and bolt clamp (code S) 4 kinds, some companies still have firm clamp (code pursues for D) 1. But this still includes impossibly but dislocation lathe tool all clamp means. For example code name P is the center that uses bit cylindrical sell clamp, and clamp means has lever type, prejudicial type, and, the product that place of each tool business offers did not include all clamp kind certainly, because of trade catalogue should consulting when this is chosen. Each clamp kind is applicable and different formal razor blade, if do not have aperture razor blade commonly used on press type (C) , pottery and porcelain, cubic nitrogen changes the bit such as boron commonly used this clamp means. D and M clamp is reliable, apply to the circumstance with cutting greater power, the treatment that if treatment condition is the rough machining of abominable, steel, cast-iron,waits for short bits. P before knife face is open, be helpful for discharging bits, general medium, light cutting can be chosen. S structure is simple and compact, discharge bits without block, it is the clamp means of heavy aperture razor blade, usable in front bit, agree with light cutting and alveolus treatment. Horn of the tool cutting edge angle of the chooses bit appearance and treatment target of bit appearance, cutting tool, point of a knife and effective blade number are concerned etc. General outside round turning is commonly used 80 ° protruding 3 edges form (W) , all directions form (S) with form of 80 ° arris (C) bit. Copying is commonly used 55 ° (D) , 35 ° (V) arris form and circle (R) bit. 90 ° tool cutting edge angle is commonly used triangle (T) bit. Different bit figure has strength of different point of a knife, part of general point of a knife is larger, strength of point of a knife is greater, vice versa. Round razor blade (R) part of point of a knife is the largest, razor blade of 35 ° lozenge (V) part of point of a knife is the smallest (graph 2) . When choose, should the basis machines a condition abominable, by specific aim of heavy, medium, light cutting the ground chooses. Below the condition that allows in machine tool tigidity, power, large surplus, rough machining should choose the razor blade with larger part of point of a knife, conversely, what is appropriate to the occasion of small, small surplus, finish machining chooses machine tool tigidity and power razor blade of lesser knife sharp-angled. Graph sketch map of vibration of appearance of 2 razor blade and intensity of point of a knife, cutting considers from cutting force, part of point of a knife is larger, bigger to the radial component of force of workpiece in turning, cause cutting vibration more easily. Graph 3Q razor blade looks from effective blade number, below coequal condition, circular razor blade is most, arris form razor blade is least, the quadrangular bit that revealed a kind of 80 ° again recently (Q) (graph 3) , the effective blade number that this kind of razor blade compares razor blade of form of 80 ° arris increased one times. The form of choice arbor head of arbor head form presses tool cutting edge angle and straight head, slant head cent has 15 ～ 18 kinds, each form set corresponding code, in national level and cutting tool example, list, can choose according to actual condition. Have the work of orthogonal step, optional be more than or be equal to be favored with to go to slant horny arbor. General thick car, optional tool cutting edge angle of 90 ° of 45 ° ～ ; Fine vehicle, optional of 75 ° of 45 ° ～ ; Cut among, profile modeling, optional 45 ° ～ 107.

Of 5 ° ; When machining complex tigidity is good optional and lesser value, when machining complex tigidity is poor, optional greater value. The after choosing commonly used razor blade horn of the horn after bit has N(0 ° ) , C(7 ° ) , P(11 ° ) , E(20 ° ) etc, general rough machining, semifinishing machining is usable N. Semifinishing machining, finish machining is usable C, P, the N that usable also belt decides bits chamfer form razor blade. Process cast-iron, hard steel usable N. Treatment stainless steel is usable C, P. Treatment aluminium alloy is usable P, E wait. The stuff with machine flexibility to restore a gender good can be chosen a few bigger hind horn. Bore hole commonly bit, choose C model, P, large size aperture can choose N model. The choice of valuable assistant knife handle has 3 kinds of choices: R(right hand) , L(left hand) with) of N(valuable assistant. The way that should notice knife of divisional left and right sides (graph 4) . Machine tool tool carrier should considering when the choice is before buy type or postposition type, before knife face is still be down up, the feed direction of the direction of rotation of main shaft and need, graph the 5 different results that showed knife of valuable assistant whorl to issue earning to arrive in different situation. Graph knife handle of 4 valuable assistant pursues basic measure has the choice arbor of the applied arbor dimension of knife of whorl of 5 valuable assistant height of point of a knife, the width of arbor and length, in standard measure series, these are corresponding, the machine tool photograph that should use with place when the choice matchs, make lathe tool installs the position of point of a knife on center lathe tool carrier to be in the exalted buy such as line of center of lathe main shaft, if slightly a bit lower can add spacer to solve, but to numerical control machine tool, in principle must not add spacer. What the length of arbor should need considering arbor is dangerous extend a capacity, this is dangerous extend a quantity to answer as far as possible small. Aperture arbor considers the smallest aperture of treatment to wait a moment even inside. The chooses cutting blade length of cutting blade length should be decided according to mental allowance, the 2/3 with long knife of not better than attends cutting. Should consider the impact of tool cutting edge angle to length of effective cutting blade. The accuracy class of choice razor blade of bit accuracy class works according to treatment, for example the choice such as finish machining, semifinishing machining, rough machining, so that be below the premise that makes sure exercise task is finished, reduce finished cost. National level has A ～ U in all 12 accuracy class, commonly used grade is turning G, M, U. General, accurate treatment chooses the G class razor blade of high accuracy; Be not the finish machining of iron metal stuff, semifinishing machining appropriate chooses G class razor blade. Temper by dipping in water is hard (45HRC above) the finish machining of steel also can choose G class razor blade. Finish machining can choose M class, rough machining to be able to choose U class razor blade to heavy load rough machining. The radius of circular arc of choice point of a knife of radius of circular arc of point of a knife affects cutting efficiency not only, and matter to the precision that be reached by treatment surface surface roughness. From the point of radius of circular arc of point of a knife and concern of the biggest feed, the biggest feed should not exceed the 80 ％ of dimension of radius of circular arc of point of a knife, will worsen otherwise cutting condition, appear even whorl shape face and make the issue such as the knife. Accordingly, the radius of circular arc of point of a knife of the choice should is equal to or be more than spare parts turning 1 of the biggest feed.

25 times. When horn of point of a knife is less than 90 ° , permission the biggest feed should drop. Radius of circular arc of point of a knife still is concerned with the reliability that judges bits. To assure bits, cutting surplus and send a quantity to have a the least value, reduce when radius of circular arc of point of a knife, two this when get the least values also are reduced accordingly, accordingly, from break bits to set out reliably, normally car of quantity, small to Xiaoyu feed machines exercise to should use radius of small circular arc of point of a knife, conversely appropriate uses radius of bigger circular arc of point of a knife. Radius of circular arc of point of a knife and feed are to form on geometry by two parameter of surface roughness of surface of treatment spare parts: ε of H ≈ F²/8r (in type, h is tall µm of treatment surface outline, f is feed Mm/r, r ε is Mm) of radius of circular arc of point of a knife. From this type is knowable, should be machined surface roughness of spare parts surface and feed already after set, the F²/8h of ≥ of ε of R of radius of circular arc of point of a knife with optional corresponding choose. Particular numerical value sees a table 1. ε of R of radius of circular arc of point of a knife of µm of surface roughness of surface of watch of correspondence of data of ε of watch 1 R, F, Ra / Mm 0.

4 0.

8 1.

2 1.

6 2.

F(mm/r) 1 of feed of 4 H Ra.

6 0.

6 0.

07 0.

10 0.

12 0.

14 0.

17 4 1.

6 0.

11 0.

15 0.

19 0.

22 0.

26 10 3.

2 0.

17 0.

24 0.

29 0.

34 0.

42 16 6.

3 0.

22 0.

30 0.

37 0.

43 0.

53 25 8.

0 0.

27 0.

38 0.

48 0.

54 0.

The chooses our country production hard alloy razor blade of form of the 66 chamfer that break bits breaks cent of bits chamfer form to be two kinds big, one kind is national level (GB2076, form of 23 kinds of when 87) place recommends chamfer that break bits; One kind is absorb through introducing, develop what have a youthful look produces to decide bits chamfer form. Before one kind often is used on general accuracy machine tool, hind recommend in a kind of trade catalogue that is in factories of two big hard alloy gave corresponding suitable scope. Form of two kinds of big 10 kinds of several chamfer cannot, list, when choosing, can consult concerned example. Regard groovy numerical control cutting as treatment, the form of the chamfer that break bits of bit already added compensatory chamfer form to basic chamfer form two kinds of mode develop, namely with as far as possible small groovy body is enclothed as far as possible big size range of pipe bent, the others enrichs groovy form to make up for. The material character that flooey form basis machines exercise type and treatment object will decide, each supplier states the method is different, but thinking is basic and same: Basic chamfer form has precision work by treatment exercise type (code F) , common treatment (code M) and rough machining (code R) . Treatment material has steel by international standard (P kind) , stainless steel, alloy steel (M kind) and cast-iron (K kind) . One combination had these two kinds of cases corresponding groovy form, for instance PF points to the form of finish machining chamfer that uses Yu Gang, KM is to be used at the groovy form of cast-iron and common treatment to wait. If treatment expands to two direction, be like superfinishing and heavy-duty rough machining, and material is patulous also, be like heat-resisting alloy, aluminium alloy, nonferrous metal is waited a moment, the compensatory chamfer look that had superfinishing, heavy-duty rough machining and treatment heat-resisting alloy, aluminium alloy to wait a moment, specific trade catalogue can consult when the choice. 2. The arrangement that the administrative levels problem of the choice chooses, in this it is to point to the cutting tool that chooses what class. The tool market of our country already was complete buyer's market, this is advantageous to buyer, but also brought bewilderment to buyer. The value of the requirement that the class of the cutting tool that chooses what class and machine tool, component machines, product. The market situation of the category of the enterprise and company product having close relationship. Current, the cutting tool to China " administrative levels " have inside course of study so think one kind: (1) Germany, (2) Euramerican, Israel, Japan, (3) Korea, Taiwan, (4) China inland. Generally speaking the cutting tool price of these countries and area is ordinal and degressive, but this is not to say the sexual price of its cutting tool is compared also is such, not be to say to be in severally more oneself strong point respect is not world top class product (include price) , not be the 1st administrative levels. Hill spy dimension overcomes steel cutting, agree the treatment of the high temperature alloy of accept, Yisika, stainless steel, when climbing, the treatment of the aluminium with Yisika, tall hill and nonferrous metal; Shanteweike's lathe tool, hill is tall, Ingersoll, made of baked clay the milling cutter with special Er, flooey knife of Yi Sika, aimoke's tap, the reamer of bezoar of a horse, EPB, but the boring tool with special wheat, the bit that cobalt gets, japanese cermet is waited a moment. Home: The high-speed steel of total works of the gear hob of works of tool of the broach of the milling cutter of the quantity that breath out labour, haing one labour, expensive work, Hanjiang, southwest tool establishs milling cutter, on the cutting tool of integral hard alloy that the mill of the tap of blade, flower case and aperture machine diamond of cutting tool, Hunan, have the advantage that comparative on respective domain and administrative levels, user should according to the actual condition of oneself the sexual price of mature cutting tool is compared, make a choice. Like the product difficult treatment or treatment ask the tall, businesslike, demand that has quality, can choose ground floor second cutting tool, be like domain of car product line, aerospace. The groovy treatment on general accuracy machine tool can be competent completely also with homebred cutting tool. 3.

The standardization problem graph of the choice fathers 6 times tine choice standard items and blame mark product are mixed to the price offer goods period to have very big effect. Standard items and blame mark product are opposite, in product of mark of this one dispute, be in another may be standard items, generally speaking, the strong point product of each company, the possibility that is not mark is a few less, machine aircraft engine component to seal severe tine for example (graph 6) , the treatment of area of 2 knives that the treatment that original plan is an area of severe tine A needs to be not mark, B needs 3 ～ 4 knives that be not mark, c area needs 2 ～ 3 knives that be not mark, use groovy knife of Yisika, cutting tool of A area standard, area of two knives that be not mark, C is not B area twice mark knife. Cutting tool amount decreases, standard items increases, and because Yisika is on groovy knife of technology and experience accumulate, knife of chamfer of its blame mark and price of standard chamfer knife comparative with the cycle that offer money, reason advantage is clear. 4. The change of economy of versatility issue market of the choice not is measured, the product with need product of today's sell like hot cakes may be slow-moving tomorrow and new development, answer when cutting tool is configured mature this and choose the cutting tool with better versatility as far as possible. Versatility is due the consideration of two levels, pointing to on one hand is not special knife however general standard knife, it is a knife can finish more treatment to work on the other hand. For instance, the Q that mentions in front razor blade is a kind of very good razor blade, it is more effective than razor blade of form of 80 ° arris blade number increased one times. But it has orthogonal steps leading up to a house in cutting outside the restriction that edge length should accept when the circle (graph 3) , because this versatility is a bit a few poorer. Use common grooving knife to be able to cut the chamfer of certain measure width only for instance again, and use muti_function the knife that cut flooey, can cut include to be mixed widely together with bit dimension wider chamfer and outside round, end panel, such, cutting tool number can decrease and the object of treatment and limits get addition, economy also with respect to amid. Cutting tool chooses to suffer a lot of elements to restrict, the precision of the material brand of the breed norms that is like bit, cutting tool, razor blade, cutting tool and price are waited a moment, those who choose plan is good with bad make judgement according to actual condition ability only. CNC Milling