The innovation thought shallow analyse in high speed treatment and PowerMILL software
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- source:SHNMIN CNC Machining
4) wait, make conventional technology technologist must reconsider craft. If want to acquire high exterior quality, cut and when cutting a work, no matter be rough machining or finish machining, should use use circular arc to be cut and cut a method to be cut or leave work. Should avoid as far as possible perpendicular next knives, near spare parts surface directly, because such meetings lower cutting rate, can be in at the same time spare parts apparently leave mark of a lot of knives of POWERMILL rich cut cut reach join kind the satisfied high speed treatment requirement of great limit, special use certainly in finish machining cut cut technology program. At the same time POWERMILL is the CAM system with very rich strategy of a finish machining (if pursue 6) graph for a lot of 6 pairs of appearance, the strategy with the most significant precision work is to use three-dimensional helix strategy (if pursue 7) . Use this kind of strategy to be able to avoid to use parallel strategy and slant the frequent directional change that the conference in strategy of buy finish machining appears, raise treatment rate thereby, reduce cutting tool to wear away. This strategy is carrying rarely successive and slick cutting tool way is generated to pursue below the circumstance of the knife 7 graphs of 8 traditions waiting for tall treatment means is the means of a kind of treatment that numerous CAM software uses generally, the innovation that POWERMILL makes on this classical treatment means lets a person find everything new and fresh: (1) helix tall, machining area namely only feed, carrying successive and slick cutting tool way is made below the circumstance of the knife (graph 8) , into, the means that retreat a knife uses circular arc to be cut cut, the characteristic of the high fashion such as helix is, did not wait for the cutter track shift between the high level, avoid to carry often the consume with the influence of knife, feed to quality of spare parts surface and mechanical needless equipment. (2) wait for the tall treatment such as surface roughness, it may be said has the kind of a kind of treatment of characteristic alone, change the way of axis of odd first-class Z of other CAM software, changeover of intelligent identifying, intelligence, will raise curved surface to machine quality considerably, of cutter track optimize, will reduce handling time considerably. (3) optimal wait tall: Optimal waiting for high fashion is the method of a kind of treatment that suits high speed treatment very much likewise, POWERMILL system can use area automatically to analyse algorithm to be handled respectively to area of abrupt peace calm, computation suits to wait to be reached high suit to use similar 3D to slant the area of buy, and can use helix means at the same time, carrying rarely optimized cutting tool way is made below the circumstance of the knife (graph 9) , acquire better exterior quality. (4) wait for high fashion traditionally, still can yet be regarded as a kind of first-rate treatment means, apply in high speed treatment, must adopt, circular arc is cut cut join way, and pointed horn circular arc transfers. The order that the join means a future life that taboo leaves a sword directly processes into high speed (graph 10) . Graph the means in the CAM software that the Qing Gengong of 9 graphs 10Powermill can be author contact is most (graph 11) , security one of CAM software with best, the most considerate consideration pursue 11 (1) root of automatic Qing Dynasty: The much talk move back and forth that is based on model surplus feature is automatic clear root, POWERMILL system can use area automatically to analyse algorithm to be handled respectively to area of abrupt peace calm, use in abrupt corner according to machining craft to be used automatically wait for tall means a future life to become cutting tool way, even area arises along cutting tool method, and edge root direction is full automatic machine from the move back and forth inside extroversion, ensure surplus is even, the natural and smooth, smooth, load that assures cutting tool method is even (graph 12) graph 12 (2) treatment of incomplete surplus clear root: The system is machined automatically last quite find out remains automatically to measure border with former model, outside dividing Chan Biqing root, means of the others clear root can use remains to measure clear root option, complete clear root and leftover area treatment by the 3D Offest means inside extroversion, reduce artificial rehabilitate as far as possible. If the user owns machining center of 5 axes high speed, 3+2 axis is machined (pentahedral treatment) reach 5 axes linkage to machine a function so you can be in use spherical when cutting tool, use pitch list, will avoid point of a knife of linear velocity low-down to attend cutting. When high speed is machined to large and flat surface, if the car enclothes a mould to assure cutting linear velocity, on craft need cutting tool secures the treatment that place part, in order to assure good exterior quality. 3, the editor after interference examination reachs: In process designing process, you can want to be used at the length of actual cutting tool of treatment with you, the knife places dimension to undertake interfering checking, the system can check cutting tool, knife handle, clamping apparatus to whether be interfered quickly according to your setting, the interference collision of the cutting tool in machining a process actually, knife handle, clamping apparatus is the problem with most afraid handlers, powerMILL provides the interference examination of accurate cutting tool, knife handle, clamping apparatus, automatic cut drops the cutting tool method that produces collision and instruction, can give out not to produce the shortest length placing a knife of collision, directive handlers optimization has the knife prepares, have very economic sense. With high speed treatment status falls, had avoided completely to cut it is more important that with cutting tool clip holds collision to check, because any such attaint more will serious. High locomotive rate makes handlers discovers in treatment any problems cannot stop machine, cutting tool must be checked to machine method to reach emulation examination to undertake high speed of result desired result machines condition to fall with ViewMILL before be being machined consequently, cutting tool collides and cut a problem to appear more serious too. Clip holds the cutting tool of PowerMILL to collision is checked and be cut too avoided a function to eliminate NC programmer the worry to this. 4, of cutting speed optimize high speed controller to have NURBS option to use PS-Optifeed to optimize F to be worth, the system can be in according to making cutting tool way the change that the cutting when cutting measures, undertake speed optimizes processing automatically, accelerate cutting rate in cutting hidebound place that is to say, and in mental allowance great place raises cutting rate, shorten thereby handling time, improved work efficiency, reduce the damage of cutting tool, prolong the life of cutting tool, assured the less change of machine tool and the cutting load that cutting tool needs, improve the exterior quality of finish machining, graph 13 it is the process that optimizes F value, graph 14 be after optimizing F to be worth, basis of speed of the cutting when cutting the metabolic graph of surplus 13 graphs 14 5, appliance of high speed control has the high speed controller with NURBS newest option to have NURBS option, a series of curves move and allowing to use thereby is not many short sharp movement will have precision work. Such process control are speed bottleneck no longer, machine speed consequently more rise. Because campaign of each paragraphs of NURBS is longer, machine tool controller can look ahead further, such, make method design and feed rate setting more intelligence is changed. In the meantime, use curve method has fewer speed to if decrease,be adjusted than using a series of linear method, decelerate. Generation suits the NURBS curve that high speed machines to control code more. Graph 15X-6.
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25 6, last word: The author understands to what high speed machines, and a few experience in real work, the security of the program that the individual thinks high speed is machined is principal, the author has spoken of for many times in front, because this chooses intelligence,intelligent CAM system also is must, because traditional CAM is unified kind it is to face local treatment kind, rely on handlers to had been appointed cut control face or form and structure, use artificial or semi-automatic means to had been prevented cut processing, is not full automatic cut too defend, the mental pressure of handlers is great, be the influence of the element by the respect person such as heart of mood, responsibility, cannot from go up at all the happening that puts an end to a mistake, have the hidden trouble that produces casualty, traditional CAM system is accordingly improper the application at high speed processing technique. CNC Milling CNC Machining