The form of tall follow the lead of of the groove on gas turbine spare parts is machined

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Annulus, dish, axis and casing, spare parts of engine of this kind of gas turbine has relatively complex figure commonly, normally need undertakes the profile modeling turning of groove inside cramped space. Wide chamfer what copying holds proportion in whole cutting time bigger, special the target that also becomes people attention accordingly at the technology of newest cutting tool of this domain. Annulus, dish, axis and casing, spare parts of engine of this kind of gas turbine not only form is complex, the machinability of its material is general poorer also. And current, the supplier of these spare partses people, the pressure of the cost that bearing to increase increasingly undoubtedly and respect of date of delivery. If want to have production efficiently as far as possible in order to ensure oneself competition ability, must stand in machine the front row that processing technique develops. Temperature of tall cutting force, tall cutting and stronger groove wear away trend, to efficient cutting treatment and cutting blade raised very tall requirement, the cutting tool that develops technically for this and treatment craft also entered the field of vision of people quickly subsequently. And Protean treatment requirement, the cutting tool that also can make have distinguishing feature each finds the ground of its use force. Give Wu Jiang to spend a consideration, the form of chamfer of most inside and outside of gas turbine spare parts always contains circular arc face and a few complex curved surface. To machine wide chamfer or hollowness, size is proper but dislocation round razor blade makes first selection solution. Almost all razor blade has radius of circular arc of point of a knife, to at round razor blade character, can say its are whole cutting blade all exists with the form of radius of circular arc of point of a knife. They can be the real round bit that uses bolt clamp with what go up in common lathe tool, but those who go up is use in grooving knife plate,also have the grooving bit of circular arc point, or the razor blade of head of bend circular arc of dispute mark in order to gain the biggest cutting tool accessibility. Right at afore-mentioned round razor blade of these types, its dimension chooses to often need to consider the outline radius of workpiece, so that win way of cutting of first-rate cutting tool. The cutting with slashing requirement is being machined by difficult treatment material (if heat-resisting is super alloy or titanium alloy) when the gas turbine part that make, must choose cutting tool, cutting carefully parameter and method taking a knife. With respect to eye antecedent condition looks, copying when the groove on these spare partses, the place that is worth to optimize is very much, shorten further thereby handling time, ensure the consistency of the security that machines a process and spare parts quality, reduce percent defective from this. Choosing to follow the rough machining of after or finish machining process the most advanced the most appropriate circle (bit) cutting tool after, optimize cutting parameter namely next, this action is to control heat in metal cutting, improvement cutting tool life is mixed cut bits to form. When using round bit, ensure deepness of the correct ply that cut bits, cutting and feed appear particularly important. The tool cutting edge angle of cutting blade is the key that cuts bits ply certainly, crucial effect had when machining heat-resisting alloy. The groove when this super to heat-resisting of keep within limits treatment wears away, and the control that bits cuts to growing when titanium alloy is machined is having main effect. Accordingly, be necessary to so that form,choose reasonable feed enough cut bits thickly, ability won't produce negative effect to cutting blade. To hard alloy and razor blade of pottery and porcelain, treatment has value of disparate cutting speed limit when these material. To razor blade of Wu Tao porcelain, need balances the heat in metal cutting of a generation carefully, also namely: Enough makes workpiece material happens to plasticity is out of shape and be formed cut bits, but cannot excessive lest be opposite,cutting tool material produces ill effect. Right at hard alloy razor blade, cutting speed is restricted (normally inferior) . From the point of the point of view that produces efficiency, using taller feed is advantageous normally, right now cutting tool life can have a bit reduce. Typical round razor blade of round razor blade has cutting tool of dish of round razor blade that treatment uses kind of part most solid cutting blade, and less to walking along knife direction to restrict. Add up to heat-resisting to Wu Kuo the razor blade of pottery and porcelain of super alloy cutting and the hard alloy razor blade that suit this kind of alloy and titanium alloy cutting, when using round bit, the deepness of the biggest cutting that needs to win satisfactory function place should be bit diameter (IC) 25% (corresponding the tool cutting edge angle at 60 degrees) , what because cross much cutting deepness,can cause oscillatory trend aggravate and function is not stable. Be bit diameter when cutting deepness 15% (corresponding the tool cutting edge angle at 45 degrees) or lower when, can obtain optimum behavior. Use what what lesser tool cutting edge angle forms to cut bits thinner, this is meant can reduce groove tatty current and latent capacity raises feed. Be worth according to corresponding commendation, considering appropriate the biggest with the smallest ply that cut bits, cutting deepness and ratio of bit diameter IC upright at 0.

05 (corresponding at 26 degrees of tool cutting edge angle) to 0.

15 (corresponding at 45 degrees of tool cutting edge angle) between the feed when amends coefficient for 2.

3 to 1.

4. This shows, when using round bit, the quite bigger than be being had to a lot of respects impact of cutting deepness and bit diameter, the security that this includes process of quality of possibility of time of metallic purify rate, cutting, process designing, surface and grooving and copying. Nextpage is one of successful crucial factors to the turning platoon bits of groove. Right at titanium alloy, normally the hope gets cutting bits width small Wu Dao piece (groove) the longer helix of width or snail coil bits. Titanium alloy is formed wind shear contrast is cut when cutting bits extremely tall, form harder consequently narrower cut bits, this need chooses the properest bit chamfer form and feed. Inside the working limits that chooses groovy form, cutting tool life also is one of influencing factor that decide optimal feed. The spare parts needs to undertake a lot of wide chamfer are machined, this means organic meeting to pass what cutting tool realizes pair of cutting processes with method taking a knife to optimize. Without doubt, all groove have sidewall. If do not take corresponding step, can bring about cutting tool to produce the adverse situation with cutting blade abrupt and overmuch penetration of a cutting tool when cutting sidewall. Transfer to bottom and sidewall when cutting when round horn, cutting blade can experience the impact that cutting deepness increases suddenly: Its tool cutting edge angle from low add quickly at 45 degrees reach 100 degrees, corresponding cutting deepness is OK from diameter of round razor blade 15% increase 60% . This kind of concussion and additional laden effect are met aggravate cutting tool is excessive tatty risk, can cause bit rupture even and reduce the dislocation number of round razor blade. "Boil " / " boil " type is cut cut pair of turning at use circle razor blade, can adopt all sorts of methods to transfer to cutting workpiece and bottom and sidewall the treatment of round part part undertakes optimizing. Its are main the method is feed is reduced when approaching round part, this action can reduce the pressure on cutting blade; Another kind of method is union uses the bit diameter that suits Wu Guo to cross round horn radius, sidewall of the treatment when making bit different and transfer round part part, reduce the osculatory length of cutting blade and workpiece substantially thereby. Cycloidal turning / to turning also namely, our purpose is to use dimension and sidewall to transfer the round razor blade that round horn photograph gets used to, walk along cutter track diameter and feed with first-rate, with " boil " and " boil " the means treatment of feed transfers round horn. Transfer the difference between round horn radius and bit diameter is bigger, of feed reduce less, manufacturing efficiency also can be jumped over tall. To the cutting way that Wu Dao has, radius of its process designing should be not big at bit diameter (be decided by the property at this working procedure) . Generally speaking, should differentiate wide chamfer treatment the gather that is a certain number of profiling. This action aims to maintain appropriate cutting blade to contact arc length below optimal feed, in order to obtain bigger cutting deepness. Cycloidal turning is had decide walk along a knife to answer a circle, blade of cutting tool cutting and workpiece contact arc length are relatively lesser, method of this kind of treatment can improve cutting result, the advantage is clear, can replace well inclined to turning, cut type turning and multiform grooving circulation. If the progress of domain of treatment of round razor blade wants Baconian round razor blade to machine the progress of the domain, particular system pledges in bit chamfer form, material now and on process designing method. Material of appropriative razor blade pledges and groovy form cuts heat-resisting to Wu Che for super alloy crucial. Regard pottery and porcelain as the complement of bit, newest the hard alloy razor blade that roll out develops in recent years swift and violent. SO5F is a kind of very advanced hard alloy material pledges. Its are tall the fine grain matrix of hardness adds CVD scumble layer, make its can bear higher cutting temperature, wearability is very good. This is meant, this material can be character in rough machining and finish machining working procedure undertake turning with taller cutting parameter. The hard alloy material of PVD coating pledges GC1105 has very tall red rigid, can avoid effectively to appear on sharp cutting blade inside very wide cutting parameter range plasticity is out of shape. In qualitative respect of material of pottery and porcelain, mount surpasses A Long (Sialon) the lathe tool of CC6060 of pottery and porcelain makes copying and sunken antrum treatment are perfected further. In more stable treatment circumstance, or workpiece surface already below the condition of prior operation, this material is had character very strong fight groove to wear away ability. Will see groovy body again, round razor blade and razor blade of grooving of circular arc point (like SM and RO) already was come out by development, with optimizing heat-resisting the turning of super alloy, copying and sunken antrum machine working procedure. SM is look of a kind of chamfer of round razor blade that has bigger scope of application, its light groove body and S05F material are united in wedlock character, can use very tall cutting parameter. Groovy form RO is used on grooving of blade of circular arc of CoroCut double head and profile modeling razor blade, this chamfer form has sharp cutting blade, when treatment heat-resisting super alloy is mixed when other and agglutinant material, the good control that cut bits can be offerred below inferior cutting deepness and feed. CNC Milling CNC Machining