The mould creates the common problem of the domain

The what when 1) chooses mould steel is the most important with the factor that has conclusive sense most? Figuration method - can choose from inside kind of two kinds of basic material. Steel of A) hot-working tool, it can bear the modular casting, relatively high temperature when forging and squashing. Steel of tool of B) cold working, it is used at next makings to mix cut, cold figuration, cold extruding, cold forging and pulverous pressurization figuration. Plastic - a few plastic meetings produce caustic by-product, for example PVC is plastic. The condensation that long shutdown causes, caustic gas, acerbity, cooling / heat, water or store the element such as the condition also can arise corrode. Below these circumstances, recommend the mould steel of material of use stainless steel. Mould dimension - large size mould often is used beforehand hard steel. Hard steel of integral temper by dipping in water often is used at small size mould. The mould uses a number - use for a long time (> 1000000) the mould should use tall hardness steel, its hardness is 48 - 65HRC. Wait to be used for long in (100000 arrive 1000000 times) the mould should be used beforehand hard steel, its hardness is 30 - 45HRC. Short time is used (exterior surface roughness - a lot of plastic die manufacturer are interested in good exterior surface roughness. When adding sulfur to improve metallic cutting performance, exterior quality can drop accordingly. The steel with high sulfur content also becomes brittler. Does 2) affect data but what is the chief factor of cutting sex? The chemical part of steel is very important. The alloy class status of steel is higher, jump over difficult treatment. When carbolic content increases, metallic cutting function drops. The structure of steel is very important also to metallic cutting function. Different structure includes: Forging, cast, of extruding, of rolling and already cutting has been machined. Forging and cast have the face that is hard to machine very much. Hardness is a when affect metallic cutting performance main factor. Common law is steel harder, jump over difficult treatment. High-speed steel (HSS) can use at machining hardness highest the material that is 330-400HB; High-speed steel + titanium changes nitrogen (TiN) coating, can machine hardness highest the material that is 45HRC; And the material that is 65-70HRC to hardness, must use hard alloy, pottery and porcelain, cermet and cubic nitrogen to change boron (CBN) . Metalloid ginseng is miscellaneous have undesirable effect to cutting tool life commonly. For example Al2O3 (alumina) , it is pure pottery and porcelain, have very strong abrasion. The last it is leftover stress, it can pose problem of metallic cutting function. Often recommend working procedure is released into travel stress after rough machining. By what is the manufacturing cost that 3) mould makes comprised partly? Say roughly, the distributinging situation of cost is as follows: Cutting material of 65 ％ workpiece 5 ％ 　 assembles 20 ％ heat treatment / adjust 10 ％ 　 the value that the metallic cutting performance with this very clear also clear and good the earth's surface and good overall cutting solution produce to the economy of the mould. What is the cutting character with cast-iron 4) ? Generally speaking, it is: Cast-iron hardness and intensity are higher, metallic cutting function is lower, the longevity that can expect from bit and cutting tool is lower. Those who be used at metallic cutting production is cast-iron the metallic cutting performance of its much type is average very good. Metallic cutting function and structure are concerned, harder pearlite is cast-iron its treatment difficulty is greater also. Flake graphite is cast-iron have admirable cutting property with malleable iron, and nodular cast iron is quite bad. What encounter when treatment is cast-iron is main wear away the type is: Abrasion, felt and diffuse wear away. Abrasion basically is joined by carbide, sand sundry and cast cuticular generation forcedly. The felt that has the tumor that accumulate bits wears away to happen below low cutting temperature and cutting speed condition. Cast-iron ferrite part solders the most easily to go up to bit, but this is usable raise cutting speed and temperature to overcome. On the other hand, diffuse wear away to be concerned with temperature, arise when tall cutting speed, use high strength especially when cast-iron brand. These brands have very tall fight change model ability, brought about high temperature. This kind wears away with cast-iron concern with the action between cutting tool, this makes a few cast-iron need to use pottery and porcelain or cubic nitrogen to change boron (CBN) cutting tool is machined below high speed, in order to acquire good cutting tool life and exterior quality. Be opposite commonly the attribute of typical cutting tool that machines cast-iron place requirement is: High fever hardness and chemical stability, but also concern with working procedure, workpiece and cutting condition; Requirement cutting blade has exhaustion of tenacity, heat-resisting to wear away with point intensity. The satisfactory rate with cast-iron cutting depends on of cutting blade wear away how to develop: Become blunt to mean generation hot crack to make cutting blade ruptures prematurely with breach quickly, too difference of quality of workpiece damaged, surface, big ripple is spent etc. Normal hind knife face wears away, poise with sharp cutting blade needs hard to accomplish commonly just about. 5) what is a mould in making main, common treatment working procedure? Cutting process at least part of one's job is type of 3 working procedure: Rough machining, semifinishing machining and finish machining, still have superfinishing even sometimes (it is application of high speed cutting for the most part) . Incomplete surplus milling prepares for finish machining after semifinishing machining working procedure of course. Answer hard to achieve the surplus that leaves to distributing equably for next working procedure in each working procedure, this are very important. If the direction of cutting tool method and working load have rapid change rarely, the life of cutting tool is lengthened possibly, can forecast more. If likelihood, answer to have finish machining process on special machine tool. This meeting is in debug and assemble the geometrical precision that the pattern raises inside time and quality more shortly. Should basically use in the working procedure that 6) differs in these why to plant cutting tool? Rough machining working procedure: Head of milling cutter of round razor blade, ball stands milling cutter and radius of circular arc of big point of a knife establish milling cutter. Semifinishing machining working procedure: Milling cutter of round razor blade (diametical limits is 10 - the milling cutter of round razor blade of 25mm) , ball head stands milling cutter. Finish machining working procedure: Head of milling cutter of round razor blade, ball stands milling cutter. Remains measures milling working procedure: Head of milling cutter of round razor blade, ball stands milling cutter, erect milling cutter. Through choosing form of technical cutting tool measure, chamfer and brand combination, and cutting parameter and right milling strategy, will optimize cutting craft, this is very important. About cutting tool of spendable tall productivity, see the mould is made with example C-1102:1Does 7) have a the mainest factor in cutting craft? A the mainest goal in cutting process is for avery kind of in each working procedure cutting tool establishs the mental allowance that distributings equably. This that is to say, the cutting tool that must use different diameter (from arrive greatly small) , it is especially in rough machining and semifinishing machining working procedure. The standard with any main moment should be to be in every working procedure the final figure with the mould as far as possible close. Offerred the mental allowance that distributings equably to assure constant and tall productivity and safe cutting course for cutting tool of avery kind of. When Ap/ae (axial cutting deepness / radial cutting deepness) changeless when, cutting speed and feed rate also but constant the ground maintains go up in higher level. Such, the mechanical action on cutting blade and working load change are little, the quantity of heat that produces accordingly and exhaustion are little also, improved cutting tool life thereby. If the working procedure from the back is working procedure of a few semifinishing machining, especially working procedure of all finish machining, can undertake nobody machine unmanned treatment or part. Constant material mental allowance also is the basic standard that high speed cutting applies. Another of constant mental allowance beneficial effect is pair of machine tools -- the adverse effect of guide screw of slideway, ball and main shaft bearing is little. 8) why most the first selection that often regards mould rough machining as cutting tool milling cutter of round razor blade? If use square shoulder milling cutter to undertake model the thick milling of antrum, be about in semifinishing machining the surplus of step shape cutting with many purify. This will make cutting force produces change, make cutting tool bends. Its are to give finish machining to leave inhomogenous mental allowance as a result, affect the geometrical precision of the mould thereby. If use the square shoulder milling cutter with weaker intensity of point of a knife (take triangular bit) , can produce uncertain cutting effect. Triangle or lozenge razor blade still can produce greater radial cutting power, and the amount as a result of bit cutting blade is less, so they are the rough machining cutting tool with poorer economy. On the other hand, round razor blade can counteract each direction in all sorts of material aspirant travel milling, if use it, transfer between photograph adjacent cutter track more flowing, also can mix lesserly with staying for semifinishing machining evener mental allowance. The ply cutting bits that one of character of round razor blade are their generation is alterable. This makes they can use higher than most other razor blade feed rate. The tool cutting edge angle of round razor blade from it is almost 0 (very shallow cutting) the change goes to 90 degrees, cutting action is very smooth. Be in the place of the biggest deepness of cutting, tool cutting edge angle is 45 degrees, the round straight wall outside be being taken when the edge when profiling, tool cutting edge angle is 90 degrees. This also explained why the strength of cutting tool of round razor blade is great -- cutting load increases gradually. Rough machining and half rough machining milling cutter of should total will round razor blade, like CoroMill200 (see the mould makes example C-1102:1) as first selection. In 5 axes cutting, round razor blade suits very much, especially it does not have any limitation. Through using good process designing, milling cutter of round razor blade greatly replaceable ball head stands milling cutter. Jumpy hidebound round razor blade and essence grind, before horn and look of look of light cutting chamfer are united in wedlock, also can use at semifinishing machining and working procedure of a few finish machining. 9) what is effective cutting speed (Ve) and why is it very important to tall productivity? In cutting, the primary consideration of the effective cutting speed on actual or effective diameter always is very important. The rotate speed that because mesa feed depends on,certain cutting rate falls, if was not calculated effective rate, mesa feed calculates a mistake with respect to the accountant. If be when computational cutting speed,the nominal diameter of use cutting tool is worth (Dc) , when cutting deepness is shallow, speed of effective or actual cutting should compare computation rate is low much. Cutting tool of CoroMill200 of the razor blade that be like a circle (be in especially small diameter limits) , the cutting tool that ball head stands radius of pointed circular arc of milling cutter, bolo to establish milling cutter and CoroMill390 to establish milling cutter and so on (these cutting tool refer to Shanteweikekeleman please) . From this, the feed rate that computation gets is low also much, this reduced productivity badly. More important is, the cutting condition of cutting tool is mixed under its ability recommend applied range. When undertaking 3D cutting, the diameter when cutting is changing, the geometrical appearance of it and mould is concerned. A solution of this problem is the spare parts region with the steep wall area that defines a mould and geometrical low figure. If be opposite,the CAM program with every region special staff is mixed cutting parameter, can achieve fold goodly counteract a result. 10) provides steel milling to die of successful temper by dipping in water for, what does important applied parameter have? When mill of use high speed provides steel to have precision work to die of temper by dipping in water, a main factor that needs to abide by is to use shallow cutting. Cutting deepness should not exceed 0.

2/0.

2mm (Ap/ae: Axial cutting deepness / radial cutting deepness) . This is to avoid knife handle / bend greatly too and maintain place of cutting cutting tool to machine a mould to have little common difference and high accuracy. The clamp system with rigid and very good choice and cutting tool are very main also. When cutting tool of use whole hard alloy, use have diameter of the biggest core (the biggest bending rigidity) cutting tool is very main. An experience law is, if raise the diameter of cutting tool 20 ％ , raise 12mm from 10mm for example, of cutting tool bend will reduce 50 ％ . Also can say, if hang cutting tool,extend / extend a part to shorten 20 ％ , of cutting tool bend will reduce 50 ％ . The knife handle of big diameter and taper raised stiffness further. Should use but the ball head of dislocation razor blade stands milling cutter (see the mould makes example C-1102:1) when, if knife handle uses integral hard alloy to make, bending rigidity can rise 3 - 4 times. When should using high speed mill to provide steel to have precision work to die of temper by dipping in water, it is very important also to choose special slot form and name. The coating that chooses to have high fever hardness so like TiAlN is very important also. When should 11) use suitable mill, when should use go against mill? Main proposal is: Use suitable mill more as far as possible. When cutting blade just undertook cutting, in suitable mill, the ply that cut bits can reach its maximum. And in going against mill, for the least value. Generally speaking, in mill is being arranged than be in in life of the cutting tool in going against mill short, because in going against mill the quantity of heat of generation compares apparent in suitable mill ground,this is tall. Bits ply should be cut in going against mill from 0 increase the biggest when, the attrition that gets as a result of cutting blade is compared strong in suitable mill, because this meeting produces more quantity of heat. The radial load in going against mill is apparently high also, this has adverse effect to main shaft bearing. In suitable mill, what cutting blade basically gets is to reduce stress, this and the tensile photograph of the generation in going against mill are compared, advantageous to the influence of hard alloy razor blade or cutting tool of integral hard alloy much. Also have exception of course. Establish milling cutter when use whole hard alloy (see C-1102:1 of pattern sample bookMedium cutting tool) have side mill (finish machining) when, it is especially in oil hard data, going against mill is first selection. This acquires the mural linearity of less common difference and 90 degrees of better part more easily. Different axial takes a knife between if have not the word of coincide, the mark that receive a knife is very small also. This basically is the direction because of cutting force. If very sharp cutting blade is used in cutting, cutting force knife of incline to general " pull " to material. Can using another case that goes against mill is, use vintage hand to move milling machine to undertake milling, the guide screw of vintage milling machine has larger space. The generation that go against mill removes the cutting force of clearance, make milling movement smoother. Is milling of 12) profile modeling still contour line cutting? Be in model in antrum milling, the best method that makes sure path of suitable mill cutting tool is successful is to use method of contour line milling. Milling cutter (for example ball head stands milling cutter, see the mould makes example C-1102:1) outside milling of round edge contour line often gets tall productivity, because be on bigger cutting tool diameter,this is, more tine are in cutting. If the rotate speed of machine tool main shaft is restricted, contour line milling carries the help cutting speed and feed rate. Use method of this kind of cutting tool, the change of working load and direction is little also. In be being machined with oil hard data in application of high speed mill, this is particularly important. Because,this is if cutting speed and feed are tall, the adverse effect that cutting blade and cutting process are changed more easily by working load and direction, the change of working load and direction can cause cutting force and change of cutting tool bent. Answer to avoid the profile modeling milling along steep wall as far as possible. When next profile modeling milling, the ply cutting bits below low cutting speed is big. It is in the center of ball head knife, still have the risk with point broken collapse. If control difference, or the machine tool is not had read a function beforehand, cannot enough quickly decelerate, the easiest centrally produces the risk with point broken collapse. Along steep wall go up profile modeling milling is betterer to cutting process, because be below the favorable rate that cut bits,this is, the ply that cut bits is its maximum. To get the longest cutting tool life, should make in milling process cutting blade maintains successive cutting for long as far as possible. If cutting tool is entered,mix exit too frequent, cutting tool life can shorten apparently. This meeting makes the thermal stress on cutting blade and hot fatigue aggravate. Have in cutting area mix equably the wave motion with high bigger than having temperature is more advantageous to cutting tool of contemporary hard alloy. Method of profile modeling milling often goes against mill and suitable mill mix (zigzag) , the often penetration of a cutting tool in this imply cutting and retreat a knife. Method of this kind of cutting tool also has bad effect to mould quality. Every time cutting tool of imply of penetration of a cutting tool bends, in have raised number apparently. When cutting tool is exited, of cutting force and cutting tool bend reduce, in exit ministry branch to have slight stuff " cross cutting " . Why must 13) have different pitch on some milling cutter? Milling cutter is cutting tool of much cutting blade, tine is counted (Z) it is changeable, a few elements can help the pitch that is used at different treatment type certainly or tine number. Measure of material, work, overall stability, dangerous extending dimension, surface to quality asks and can use power is the element that concerns with treatment. The element that concerns with cutting tool includes enough every tine feed, at least at the same time two tine are in the capacity cutting bits of cutting and cutting tool, these are among them one fraction only. The pitch of milling cutter (U) it is the dot on bit cutting blade arrives on next cutting blade same a distance of the dot. Milling cutter cent exceeds close pitch milling cutter to be mixed scantily, closely, major coke full milling cutter has these 3 option, see the mould makes example C-1102:1. Close pitch is to point to have more tine and suitable look bits space, can lead cutting with tall metal purify. Use the medium and laden milling of Yu Zhu iron and steel commonly. Close pitch is the first selection of general milling cutter, recommend use at mixing production. Scanty pitch is to point to in milling cutter circumferential on have less tine and have the large space that hold bit. Scanty pitch often uses Yu Gang's rough machining to finish machining, affect to machining a result in the vibration in steel treatment very big. Scanty pitch is truly effective problem solution, it is long hang the first selection that extends machine tool of milling, low power or other to must reduce cutting force to apply. The space holding bit that exceeds close pitch cutting tool is very little, can use taller workbench feed. These cutting tool agree with the small surplus cutting of the cutting of discontinuous cast-iron surface, cast-iron rough machining and steel, for example side mill. They also agree with the application that must carry low cutting rate. Milling cutter still can have even or the pitch that differ. Latter is to show the interval of cutting tool upper is unequal, this also is the effective method that solves oscillatory problem. When be put in oscillatory problem, recommend use scanty tine to differ as far as possible pitch milling cutter. Because bit is little, the possibility of oscillatory aggravate is little. Small cutting tool diameter is ameliorable also this kind of circumstance. Should use can very good the combination of accommodative groovy form and brand -- the brand combination with sharp cutting blade and good tenacity. 14) to obtain optimum behavior, how should milling cutter locate? Cutting length can get the influence of milling cutter position. The cutting length that cutting tool life often must assume with cutting blade is concerned. Be located in work center milling cutter surely its cutting length is short, if make milling cutter is in,assume route of center of one direction deviate, the arc of cutting is long. Want to remember, cutting force is how of action, must achieve eclectic. Below the center circumstance that is located in workpiece surely in cutting tool, when bit cutting blade is entered or exiting cutting, the direction of radial cutting force is changed subsequently. The clearance of machine tool main shaft also makes oscillatory aggravate, bring about bit vibration. Through making in the center of cutting tool deviate, can get be mixinged constantly favorable cutting force direction. Dangerous extend longer, the vibration that overcomes all likelihoods is more important also. 15) to eliminate the vibration in cutting process, what step should take? When be put in oscillatory problem, basic measure is to reduce cutting force. This can be achieved through using correct cutting tool, method and cutting parameter. Abide by below already proved significant proposal: - choose scanty pitch or differ pitch milling cutter. - use before form of chamfer of razor blade of force of horn, small cutting. - use radius of passivation of small cutting blade (ER) bit. Arrive from thick coating scumble layer. If need can use blame coating bit. Should use matrix to be the brand of tall tenacity razor blade of fine brilliant grain. - use big every tine feed. Reduce rotate speed, maintain workbench feed (be equal to bigger every tine feed) . Or maintain rotate speed and raise workbench feed (bigger every tine feed) . Do not reduce every tine feed! - reduce radial and axial cutting deepness. - the knife handle that chooses stability, be like coke full Capto. Make exhaust the likelihood receives handle measure greatly, in order to gain optimal stability. Lever of use taper lengthen, in order to obtain the biggest tigidity. - extend to be being hanged greatly, use differ with scanty pitch the damping extension bar that pitch milling cutter joins. When installing milling cutter, make milling cutter and damping receive a handle to join directly. - make center of work of milling cutter deviate. - if use the cutting tool of even tine -- but one tine tears open every other next razor blade. 16) to make cutting tool is balanced, what does the most important step that should take have? In whole cutting process, the typical move that arrives to achieve cutting tool to balance drag in is as follows: - measure cutting tool / of knife handle component lopsided. - through changing cutting tool, cutting it with purify a few quality, or on mobile knife handle deserve to be reduced again lopsided. - often must repeat these measure, include to check cutting tool again, adjust accurately again, reach an equilibrium continuously. Cutting tool returns drag in to go to a few to did not discuss the instability in the technology that pass evenly. Among them one of it is knife handle and main shaft between coordinate an issue. Its reason is clamp often has constantly measureable clearance, also may be awl have on the handle cut bits or smudgy. This meeting causes awl handle to locate every time not identical. Although cutting tool, knife handle and main shaft are in the condition of each respects is very good, but if be put in flyblow, also can cause lopsided. To balance cutting tool, must meet the cost in increasing cutting process, if cutting tool balance is right it is very important to reduce cost, answer and undertake an analysis to every kinds particular case. But, to balance cutting tool well, there still are a lot of jobs to want to do when choosing correct cutting tool. When choosing cutting tool, the following should give a consideration: - the cutting tool that buys high quality and knife handle. Should choose to already eliminated lopsided knife handle beforehand. - had better make with short mixing as far as possible light cutting tool. - regular inspection cutting tool and knife handle, whether does the examination have fatigue whorl and metabolic sign. The cutting tool that work skill accepts is lopsided will decide by the circumstance of craft oneself. The balance state of the cutting power that these circumstances include cutting course, machine tool reachs the level that each other affect these two factors each other. The experiment is the best method that finds optimal balance. Move a few times with different lopsided value, be 20 grams millimeter from lopsided value for example or lower begin. After moving every time, reoccupy more the cutting tool duplicate tests of the balance. Optimal balance should be such one nods: Exceed this dot hind, raise cutting tool to won't improve the exterior quality of workpiece evenly further; Or be such one nods: The workpiece public errand that assures a regulation easily in skill of this bit of go to work. The key is put the emphasis on craft from beginning to end, is not dynamic balancing grade - G is worth or the balance value with other certain random serves as a target. This target should is achieve efficiency as far as possible high technology. The cost that this drag in balances to balance cutting tool and score because of this gain, because this answers,have a balance reasonably between cost and advantage. Balance more detailed technology information about cutting tool, represent connection completely with local coke please. 17) is in convention and application of high speed cutting, arrive to get as far as possible good effect, should be I used why to plant knife handle? When high speed is machined, centrifugal power is very great, can bring about main shaft aperture to greaten slowly. The knife handle of flange of form of this pair of a few V can produce negative effect, because the knife handle of V form flange is only on radial face,contact with main shaft aperture. Main shaft aperture changes to be able to make cutting tool is in greatly pull rod is pulled below constant tensile action main shaft. This can cause cutting tool to adhere even or the dimension loss of accuracy of Z axis direction. With main shaft aperture and the cutting tool that end panel contacts at the same time, namely the cutting tool that radial and axial cooperate at the same time more the cutting that applies to high speed to fall. When main shaft aperture expands, end panel contact can prevent the cutting tool shift on introversion of main shaft aperture. The cutting tool that uses hollow knife handle suffers the effect of centrifugal force easily also, but they already were designed increase into what follow main shaft opening below high speed and increase. Cutting tool and main shaft are contacted in radial and axial offerred good clamp tigidity, make cutting tool can undertake high speed cutting. Use particular ellipse when the interface of coke full Capto that 3 arris short awl designs is delivering torque and tall productivity cutting, have more excellent performance. Surface of the main shaft when rotate speed of tall main shaft contacts contrast when 　 of 4000026%67%84% of 　 of 　 of 　 of 3500026%72%91% of 　 of 　 of 3000031%83%95% of 　 of 　 of 　 of 2500037%91%99% of 　 of 　 of 20000100%95%100% of 　 of 　 of 　 of 　 of 0100%100%100% of 　 of 　 of ISO40HSK50ACoromantCaptoC5 of rotate speed of watch main shaft should arrange high speed cutting, answer to use the cutting tool system that be combined by symmetrical cutting tool and knife handle and becomes as far as possible. Have a few kinds of practicable system of different cutting tool. Heat knife handle first make aperture outspread, the cutting tool after waiting for them to cool by clamp, this is filled with too namely coordinate a system. To high speed cutting, this is to had better be mixed method of the most reliable fixed cutting tool. Because its jumpy amount is very small,this is above all; The 2nd, this kind of join can deliver big torque; The 3rd, it is very easy compose proposes custom-built cutting tool and cutting tool package; Finally, the cutting tool component that comprises with this kind of method has extremely tall overall tigidity. Another kind conspicuous unit of very current cutting tool clamp is coke full high accuracy puissant collet -- CoroGrip. System of this kind of knife handle was enclothed from all rough machining application to superfinishing. A collet but the cutting tool of all types that clamp uses straight handle, Whitworth to engrave groove or side to press the face milling cutter of type knife handle to broach. Standard pinchcock is covered, if can use hydraulic pressure (HydroGrip) , the bedspring chuck of BIG, Nikken, NT, all can use at CoroGrip collet. The jumpy volume that handles in 4XD is only 0.

002 – 0.

006mm. Clamping force and torque are delivered particularly tall, do its balance a design to make it is used at 18) of 　 of high speed cutting how do I answer doesn't cutting corner ability have oscillatory danger? The method of traditional cutting corner is use linear cutting (G1) , the transition in corner is discontinuous. This that is to say, when cutting tool arrives at a corner, because the dynamical character of linear axis is restricted, cutting tool must decelerate. Before electric machinery changes feed way, have one brief halt, this meeting produces much quantity of heat and clash. What very long contact length can cause cutting strength is not stable, often make corner cutting insufficient. Typical outcome is oscillatory -- cutting tool mixes longer greatly more, or cutting tool always is hanged extend bigger, vibration is stronger. The optimal solution of this problem: Use the cutting tool with round horn smaller than corner radius radius. Interpolation of use circular arc generates a corner. Method of this kind of treatment is in piece attrib border place won't produce halt, this that is to say, the motion of cutting tool was offerred mix glossily successive transition, the possibility that produces vibration was reduced greatly. Another kind of solution is the round horn radius with the some more largish regulation that produces to go up than blueprint through circular arc interpolation. This is very advantageous, such, can use bigger cutting tool in rough machining sometimes, in order to maintain tall productivity. Be in in the corner the rest of the optimal method that can mental allowance use lesser cutting tool to undertake what is to begin cutting speech fixed milling or 19) of 　 of cutting of circular arc interpolation? Share 4 kinds of main methods: Of initiative aperture get beforehand cut, the corner also can be gotten beforehand cut. Do not recommend this kind of method: This need increases a kind of cutting tool, at the same time this cutting tool also should hold cutting tool interior space. Sheet looks from the viewpoint of cutting, cutting tool cuts Kong Shi to produce adverse vibration because of cutting force through be being gotten beforehand. Should use get beforehand cut Kong Shi, constant regular meeting brings about cutting tool to damage. Use get beforehand cut hole, also can increase those who cut bits again cutting. If use ball head to establish milling cutter or cutting tool of round razor blade (see the mould makes example C-1102:1) , use normally peck mill, in order to assure all axial deepness be able to cutting. The weakness that uses this kind of method is the problem that discharge bits and use circle razor blade meeting generation is very long cut bits. The linear slope that one of first-rate methods are use X/Y and Z direction walks along cutting, in order to achieve the cutting of all axial deepness. Finally, can have round interpolation mill with gyroidal type. This is a kind of first-rate method, because it can produce smooth cutting effect, a demand is very little begin a space. What is the definition of cutting of 20) high speed? The discussion to high speed cutting still is confused on certain level. How to define high speed cutting (HSM) , have at present a lot of viewpoints and a lot of methods. A few in letting us see these definitions: Cutting of tall productivity of high speed of 　 of 　 of cutting of tall feed of cutting of rate of tall main shaft of cutting of tall cutting rate and tall feed cutting we describe as follows to the definition of high speed cutting: HSM is not the tall cutting speed on simple meaning. It ought to be considered as to use specific means and the technology that manufacture equipment to undertake machining. High speed cutting need not cutting of main shaft of high rotate speed. Application of a lot of high speed cutting use large size cutting tool to undertake with main shaft of medium rotate speed. If be below tall cutting speed and tall feed condition,have precision work to hard steel of temper by dipping in water, cutting parameter can be convention 4 to 6 times. Arrive in the rough machining of small size part in semifinishing machining, finish machining and the superfinishing of any dimension parts, HSM means tall productivity cutting. Spare parts appearance becomes more and more complex, high speed cutting also appears more and more important. Now, high speed cutting basically applies Yu Zhui to spend the machine tool of 40 to go up. About the detailed information of high speed cutting, refer to a mould to make applied guideline C-1120:2 please. Refer to a mould to make applied guideline C-1120:2 please. What is the target of cutting of 21) high speed? One of main goals of high speed cutting are to pass tall productivity to reduce manufacturing cost. It basically applies at finish machining working procedure, often use at machining die of temper by dipping in water to provide steel. Another target is through shortening manufacturing time and delivery time enhance integral competition ability. The main factor that achieves these goals is: (fewer this number) the mould treatment that holds clip. Improve the geometrical precision of the mould through cutting, can decrease to handiwork works and shorten at the same time time trying a model. Use CAM system and the process designing that face a workshop will help make craft plan, through craft the plan raises the utilization rate of machine tool and workshop. About the detailed information of high speed cutting, refer to a mould to make applied guideline C-1120:2 please. Refer to a mould to make applied guideline C-1120:2 please. What is the real good point of cutting of 22) high speed? Cutting tool and workpiece can maintain low temperature, this prolonged the life of cutting tool below a lot of circumstances. On the other hand, in application of high speed cutting, cutting quantity is shallow, the time of penetration of a cutting tool of cutting blade is particularly short. This that is to say, the time that feed specific heat transmits is fast. Low cutting force gets small and consistent cutting tool bends. This and every kinds of cutting tool and the constant mental allowance look that working procedure wants are united in wedlock, it is efficient one of precondition that machine with safety. Because the typical cutting deepness in high speed cutting is shallow, the radial load on cutting tool and main shaft is low. This reduced main shaft bearing, slideway and ball guide screw wear away. High speed cutting and axial milling also are good combination, it is small to the concussion of main shaft bearing, can use this kind of method dangerous extend longer cutting tool and oscillatory risk is not big. The tall productivity cutting of small size part, be like rough machining, semifinishing machining and finish machining, lead in total material purify relatively low from time to tome very good economy. High speed cutting can obtain tall productivity in general precision work, can acquire crackajack exterior quality. Exterior quality constant under Ra0.

2um. The geometrical precision of the mould rose, it is easy to assemble and faster. No matter be what person, skill how, can obtain the exterior grain that CAM/CNC produces and geometrical precision. The time that if spend,attends in cutting is a bit some more, the artificial polish job of take time can decrease significantly. Often can decrease amount to a few treatment of 60-100% 　 , if quench, electrochemical machining and electric spark are machined (EDM) , can decrease greatly. This can reduce investment cost and simplify logistics is supplied. Replace electric spark to machine with cutting (EDM) , mould service life and quality also get rising. Use high speed cutting, can change a design very quickly through CAD/CAM, fall in the situation that does not need to produce new electrode especially. About the detailed information of high speed cutting, refer to a mould to make applied guideline C-1120:2 please. Refer to a mould to make applied guideline C-1120:2 please. Does cutting of 23) high speed have risk or drawback? Because initiative process has tall acceleration and slowdown,spend and stop, guide screw of slideway, ball and generation of main shaft bearing are relatively fast wear away. This often brings about taller maintenance cost. Need the interface of equipment of technical technology knowledge, process designing and fast and deferent data. The likelihood is found very hard and pick advanced technology employee. Often have quite long debug and give breakdown time. In treatment need not urgent stop, bring about mistake and software or hardware breakdown to be able to produce a lot of serious consequence. Must favorable treatment plans -- " provide food to hungry machine tool " . Must have safe safeguard: Use belt is safe outer garment and the machine tool that prevent fractional lid. Those who avoid cutting tool is big dangerous extend. Do not use " heavy " cutting tool and extension bar. Whether do regular examination cutting tool, extension bar and bolt have fatigue flaw. Use the cutting tool that makes clear speed of highest main shaft only. Do not use integral high-speed steel (HSS) cutting tool! About the detailed information of high speed cutting, refer to a mould to make applied guideline C-1120:2 please. Refer to a mould to make applied guideline C-1120:2 please. What demand does cutting of 24) high speed have to the machine tool? Be as follows to the typical requirement of ISO/BT40 date machine tool: Power of main shaft of limits of main shaft speed > 22kW 　 but 40-60m/ of rate of process designing feed divides decelerate of axial of fast and transverse feed to spend / acceleration > 1G 　 piece data of millisecond of processing speed 1-20 delivers speed 250Kbit/s(1 millisecond) 　 increment (linear) 5-20 micron or NURBS interpolation, main shaft bearing is had tall beforehand tension and cooling power. Pass main shaft send wind / cooling fluid has tall absorption all sorts of errors compensate the frame of rigid machine tool of oscillatory ability -- guide screw of temperature, quadrantal, ball is the most important. In CNC advanced foreknow function. About the detailed information of high speed cutting, refer to a mould to make applied guideline C-1120:2 please. Refer to a mould to make applied guideline C-1120:2 please. What does cutting of 25) high speed have to the typical character of cutting cutting tool or requirement? Integral hard alloy: High accuracy grinding, radial and jumpy under 3 micron. As far as possible small bulgy and dangerous extend, the biggest tigidity, as far as possible small cutting tool bends be out of shape and big core nucleus diameter. Bend to make force of oscillatory risk, cutting is mixed as far as possible small, cutting blade and osculatory length should as far as possible short. Exceed knife handle of dimension, taper, this is particularly important when small diameter. Fine grain matrix and to get the TiAlN coat of tall wearability. With Yu Feng cold or of cooling fluid inside cooling aperture. Those who fit requirement of cutting of high speed of hard steel of temper by dipping in water is solid small chamfer form. Symmetrical cutting tool, had better be the design assures a balance. Use but the cutting tool of dislocation razor blade: Design assuring balance. In bit the assurance that goes up with bit is jumpy hidebound high accuracy, advocate the biggest radial of bit is jumpy for 10 micron. Suit the brand that cutting of high speed of hard steel of temper by dipping in water asks and groovy form. There is suitable space on cutting tool body, bend in order to avoid cutting tool (cutting force) attrition of the generation when disappearing. The cooling aperture that sends wind or cooling fluid (establish milling cutter) . The biggest rotate speed that allow indicates on cutting tool body. CNC Milling