The innovation thought shallow analyse in high speed treatment and PowerMILL software

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One, system of cutting of treatment of introductive high speed is main the system of software of CAM of high speed cutting that runs cutting tool of cutting of system, high speed, on the safe side by the high speed machining center of high speed cutting, high-powered cutting tool clip, because this says high speed,treatment is a huge project. High speed processes a large number of application of equipment, taller and taller to the requirement of process designing system, the high speed with high price machines the demand with higher to what software puts forward equipment- - security, effectiveness. High speed machines knife speed is groovy treatment 10 times or taller, if the error of any process designing processes is cut too, the metropolis such as interference, collision causes very serious accident, and move as a result of high speed, cannot rely on to stop precaution urgently artificially, facilities of high speed treatment is the equipment of invaluably, any contingency can cause inestimable loss to the enterprise, need CAM system must be had full automatic (and cannot be semi-automatic or artificial) had prevented cut, prevent collision function, the absolutely security that ensures NC dictates, it is a when put forward to facilities of high speed treatment main demand. What should assure cutting tool method additionally is smooth and smooth, will ensure the spare parts machines the life of the component such as quality and machine tool main shaft, and cutting tool is in cutting process load uniformity. 2, the treatment means POWERMILL that high speed machines is to be based on knowledge, be based on craft feature, a variety of particular treatment means, whole journey has been prevented cut, an intelligence that applies to high speed treatment changes CAM system. The function that each condition that the article asks from high speed treatment and POWERMILL suit high speed to machine, safe preventive measure will spread out discuss. High speed treatment can divide commonly for: The rough machining that is a purpose with purify surplus, remain rough machining and the treatment surface with getting high quality and fine structure are the semifinishing machining of the purpose, 1 treatment of face of finish machining, lens. The craft plan that the rough machining place that rough machining high speed machines should adopt is: Rate of tall cutting speed, tall feed and the combination that small cutting measures, the rough machining of POWERMILL (area is cleared) the stability that maintains cutting tool negative charge as far as possible, reduce the abrupt change of any cutting direction, reduce cutting rate thereby reduce, and take the treatment kind of suitable mill as far as possible. The cycle racing line in POWERMILL rough machining machines means, it is oneself the treatment pattern that the make a comprehensive view fits high speed one kind a variety of place in machining software are particular to machine a principle very, its fundamental (if pursue 1) : Regard cutting tool method as cycle racing is inside track high speed travel, cycle racing is OK the center of deviate runway, arise thereby be similar to cycle racing the athletic path inside track, cycle racing can come down to turn in the case that does not lose rate. Increased the smooth sex that cutter track moves, balance sex, avoid cutter track swerve, cut the concussion that cuts a place to cause often. Graph the method of 2 monolayer cutting tool that are the generation of means of rough machining of cycle racing line that uses POWERMILL. Graph 2 remain rough machining also is function of a when only partial CAM place has advanced treatment, POWERMILL can identify the incomplete allowance of on one knife automatically, undertake to the spare parts rough machining is reached rudimental further right last thick cut optimize a function. Go up knife crude hit the point, because spare parts existence is not planar area, can stay so have steps leading up to a house, make rudimental surplus endless and even, the system is OK differentiate is next between the layer cutting, make surplus keeps even as far as possible, make way of optimized rough machining cutting tool then, letting what you get is the cutting tool route that did not take a knife for nothing, brunet method is method of cutting tool of rudimental rough machining. The another in rough machining of graph 3 POWERMILL is peculiar machine a function, automatic cycloid machines option, cycloidal treatment (graph 4) the campaign that is the circle that uses cutting tool edge to roll comes successive, chase a layer to undertake to spare parts surface high speed, efficient, small the cutting that cuts an amount, the requirement that machines to high speed previously is, must assure to use smaller than conventional treatment method row spacing mixes next cutting step pitch. The development of technology of newest cutting cutting tool and CAM technology, make next cutting step pitch size is restricted no longer, next big cutting is adopted in using cycloid to machine means cocoa in high speed step pitch, cycloidal treatment still can reduce cutting of complete Dao Kuan, and the cutting tool method of its generation is smooth from beginning to end, smooth, the intelligent surplus of POWERMILL identifies a function, can machining the area such as quantity, complete Dao Kuan, corner to decide automatically greatly, use cycloid automatically to machine means. Make cycloid machines means to be able to apply in the rough machining of large surplus thereby. Graph 5 it is the cutting tool way that in using rough machining, cycloidal treatment options makes. Graph the area in rough machining of 4 graphs 5Powermill filters option also is only the advanced treatment function that place of partial CAM software has, i.e. to having the cutting tool of central cutting ability, be based on the knowledge, POWERMILL system that is based on craft feature to be able to filter automatically the rough machining method of the area that cutting tool blind area interferes, and the happening that prevents an accident. Additional the join means of Powermill rough machining: Outline of the knife below helix, knife below zigzag, edge is inclined the treatment requirement that is down a knife to suit high speed to machine very much, can choose when process designing, avoid to leave a sword directly as far as possible. Rough machining is additionally medium, must use slant buy treatment is politic, is not the parallel treatment strategy of use tradition. Below probable condition, answer to begin outward treatment from the center of workpiece, with reducing cutting of complete Dao Kuan as far as possible. 2. The main demand of finish machining finish machining is to should acquire quality of very tall precision, smooth spare parts surface, realize the treatment of careful area easily, be like: Small round part (be less than 1mm) , small channel water transport, the occurrence that high speed machines is the revolution of a production industry, can make such as wants to use time-consuming discharge to machine craft, finish completely on high speed machining center, oil hard data can acquire very high surface quality on high speed machining center (R0.

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