Constant material purify rate: The key of hard milling
Time:
Click:157
source:NODIE CNC Machining
Cutting tool damaged is to not be willing to use EDM (discharge is machined) and a when the mould manufactory that uses pattern of hard data milling directly cares serious problem. Because exceed the damaged of accident cutting tool that cutting tool allows laden condition and happens to waste fund not only, still can destroy whole treatment process at the same time. Accordingly, through making cutting tool is in optimal load level from beginning to end, mould workshop can score the biggest gain from which. However, a challenge that this respect exists is method of the cutting tool when milling can make material purify rate produces change ceaselessly. Cutting it is cutting tool diameter greatly with span in the method of rough machining of typical high speed of 10% , begin to enter in cutting tool when the passageway is medium, material purify rate can achieve 10 times what assume a cost, and enter when cutting tool inside 5 times what this level can reach when corner. Load of this kind of peak value is the number one reason that makes cutting tool malfunctions. The general processing means of the factory is a change feed speed, cut deep or span. Although reduce these cutting parameter,the any in the value brings about condition of peak value load likely to return the level that is worth under the doorsill, but this also can lower rate of overall purify of metal of cutting tool method, reduce productivity thereby. Accordingly, can use better way to solve to this kind of problem. The adjustment of cutting tool method is certain the purpose that cutting tool method optimizes a law depends on adopt method of differentiation cutting tool and adjusting often feed speed and obtain more consistent material purify to lead. This kind of strategy can produce the material purify rate with macroscopical constant level. But, it raised complex question to machine tool respect however. High speed of type of the outfit inside machine tool controller machines processor to be able to perfect flowing on geometry cutting tool method. In feed speed higher case falls, controller needs to undertake dynamic Xiu Yun to cutting tool method. With lesser length speed of interval adjustment feed can cause controller to explain a few use at essence of life to decide data of cutting tool method, otherwise these data are OK and eligible use at flowing interpolation. If produce this kind of situation, the machine tool can decelerate speed, make cycle time longer. When removed and special hour, adjust accurately cause possibly also have damage the machine tool movement of the bouncing type at exterior surface roughness. Another problem and main shaft speed are relevant. Adjust feed speed and do not adjust corresponding main shaft rate, can cause the ply that cut bits to produce change, and the ply that cut bits has conclusive effect to the effectiveness of the exterior surface roughness that machines for long and cutting tool. One kind when processor of method of certain cutting tool uses replaces means to be able to be described preventive method. These processor can undertake planning to the geometrical structure of cutting tool method, lest produce exorbitant load. For example, when cutting tool ends groove or entering lesser corner every time, CAM software can apply a kind to be started automatically additional swing of road of annulus of cutting tool method swing function. If be in the NX CAM of UGS, the user stipulates such as is cut not only wait for parameter greatly with span, still have numerical value of permission overload per cent at the same time. Next, metallic purify rate is controlled inside this doorsill value. The way of some kind of cutting tool that software shows through pressing the place in this two pages is retreated the knife controls load with cutting tool of new clench the teeth. Although structure of this kind of geometry introduced extra air to cut, but it makes cutting tool load achieves groove however. The problem of another CAM process designing that poses load of intermittence cutting tool to the process designing of lesser cutting tool is the irregular sex that leaves surplus for finish machining place. Finish machining operation uses a diameter normally lesser, dangerous extend the cutting tool with longer quantity. Install complete cutting to ensure and obtain better exterior surface roughness, these cutting tool must bite hardware data consistently, and the material amount with even cut away. The blame that typical Z left to cause follow-up cutting tool to be not regular load in low region to half essence operation is even surplus. More complex Z can add cutting tool way automatically in these low regions to ability, the help ensures evener surplus. Another feature, identify even horizontal automatically in rough machining working procedure namely, odd surplus can leave in order to prevent on these faces. This still can avoid follow-up cutting tool to produce exorbitant load. Cutting tool is occlusive undertake efficient when hard mill, must control cutting tool and workpiece strictly. The ply cutting bits that decides by main shaft speed and feed speed is the one part of this element. But level and perpendicular and occlusive horn (they are ignored by people normally) also have very main effect. Occlusive horn shows the level in every cutting blade occlusive the data capacity with purify of the place when leaving work. Perpendicular and occlusive horn represents the occlusive amount of blade of cutting of the biggest moment and workpiece. These elements rise integratedly force of cutting of OK and affirmatory instant and thermal diffusion. To high speed, efficient hard milling, they need to keep consistent as far as possible. Conclusion: Constant material purify rate can regard cutting tool method as part of generated a whole. Lead constant cutting tool way through offerring a design to be used at maintaining material purify to high speed machine tool, mould processing factory can score gain in the round from inside hard mill. CNC Milling