With the method of CNC system error study corrects the method error in machining a process, can raise treatment speed and treatment precision. Function of this kind of control can correct simultaneous error of common in repeating treatment cycle method sum of errors. Once the function gets be developinged adequately, can reduce the treatment cycle of the spare parts and the treatment precision that raise a part. Now, the treatment that method error study uses at outline body, get cut and tap, its develop a target is expand from special machine tool general accuracy machine tool. The proper treatment route that controls process designing does not mean a machine tool to be able to undertake completely machining according to this one method. "High speed is spent " and " high accuracy " treatment target often is mutual contradiction. Raise treatment speed to may affect treatment precision, but, to improve productivity, must raise treatment rate. Processing a system always is existence error, for example the interpolation problem of CNC system, delay time issue that serve takes a system, and the interference problem in cutting process. A few kinds of afore-mentioned errors can machine speed to produce certain effect to rising. The method that solves these problems is normally lower feed rate or increase an adaptability to control a system, undertake to its proper process designing is handled. CNC system and much from adaptive control system be with what interact into feedback system, but newer rate is too slow, cannot control an error appropriately, can detecting only the ability when the error can react somewhat, cannot have comprehensive, significant effect. The rate that tall gain serve takes a system is gotten quickly much, CNC system is splitting to the response rate of interference, but often produce correct correct errors to differ. If CNC system can forecast the error of a generation, can correct method error effectively. Reduce method error to be helpful for shortening the treatment cycle of the spare parts and improve productivity. Store compensation data forecasts cutting tool method to be able to learn functional system to come true through method error. A few parts run when adaptability controls similarly hereinafter, CNC system will learn a function to create compensation value automatically according to method error, follow with reducing serve to take move delay time and the feed disequilibrium that create because of place of cutting bear change quality, manufacturing pattern will be changed automatically when the adaptability that finish controls a function. Use method error learns a function to be able to raise treatment precision, it is one kind when be short of regret to high speed treatment is made up for. To achieve this one goal, method error learns a system to must make response lickety-split, and want to be able to store much data. Compensation data stores in CNC DRAM, access in order to facilitate quickly. Controller takes compensation data application the rate in systematic position loop at serve in the instruction. Method error study asks to use but similar statement regards reduplicative as a kind of individual function action. Its process designing also uses distinctive means, ask the user founds his configuration data, pile up process designing in order to replace standard G. The application of this one craft in a few special domains the effect is very good, if the grinding of cam is machined,machine with oriented cutting. Function of method error study can make the user uses CNC machine tool to replace common cam to machine a machine tool to serve as grinding of cam of piston lathe, car or oriented cutting to use. Method error study times especially in some inside, can repeat memory same an outline, and repeat each statement, make a motion. Reduplicative cycle can control mode to undertake an analysis through a kind of adaptability, correct serve to take sum of errors to remove the cutting interference of the generation in treatment, move next take the cutting data that store, carry out as the program. Common get used to an error to compensate functional system to be able to take software through serve oneself, send the purpose that order injunction and the correct plus that store machine according to achieving high accuracy. Method error study can store data inside software of NC numerical control or offline inside the PC: Use PC stores data, send P the stack number as it is said alterable locally; System of NC numerical control can store these data, can change its into P to pile up variable; System of aether net communication can convey binary data inside data server; DNC operating system can be used at the process designing of standard spare parts of the user. Process of method error learning is completed inside instruction cycle of the regulation, rotate for main shaft or C axis commonly the time of a week. Every outline needs to pass control a few times, be 5 ～ 10 times commonly. In controlling a process, controller will be done automatically to motion a few amend, take lag, interference and the position error that simultaneous error causes because of serve with decreasing as far as possible. After be being finished to the control of outline, compensation data is stored to rise, so that be below manufacturing mode,use. Every outline and compensation data govern control by the program. Method error learns software to apply to the high speed production of the machine tool, and do not affect treatment precision, and still allow to apply standard CNC machine tool to replace special cam machine tool. Use at the spare parts to repeat cutting, method error study can make CNC machine tool seldom appears method error, achieve very tall productivity thereby. Good operation sex above all, the software of method error study that the spare parts machines must be installed easily and process designing. In machining a process, it is OK to should pile up G should pile up G the instruction to insert part program only tone takes part study software. In because control software to be able to add the any of part program,processing order, the place that because this needs high accuracy,machines is very applicable. M code is OK also redefine, make its can be changed between adaptability mode and manufacturing mode use. Controller can found compensation data, once finish control hind but set produces mode statement, below a lot of circumstances, these M codes dictate usable macroinstruction change is worth a definition to implement the automation of craft. Additional craft can store in offline on the PC, move again as type of spare parts change next return use on CNC. Current, control system can support 24 skeleton map form and store the study data of 4min above. The method error that the spare parts processes learns applicable to be machined at the milling of any skeleton map form and turning. Pass control to be able to reduce method error, because this machine tool can be close to treatment of free outline graph more. In much more periodic control process, the serve that forms in cutting of the outstanding area that creates because of transferring between linear cutting and circular arc cutting, circular arc takes error and the error that cause because of cutting bear place to will get amend and be controllinged entirely. Another effective application domain is deep Kong Zuan cuts treatment. Deep Kong Zuan cuts treatment to cannot pass an operation to finish, the treatment that must use many routes deepens bore diameter gradually. Every journey needs to run hole bottom quickly, but generally speaking, must set clearance is planar, ability won't produce the case that surpasses the journey. If surmount the journey, broach may happen rupture. Control software can raise treatment precision, avoid to happen surmount the journey, still can shorten at the same time treatment is periodic. After method error is used to learn software in treatment of spare parts cutting, treatment cycle shortened 50% above. Getting used to spare parts of tap of tigidity of specific treatment craft to control is adaptability pilot newest application. Rigid tap is used from get used to an error to compensate functional system to be able to eliminate the simultaneous error between main shaft electric machinery and tap axis. After eliminating simultaneous error, the speed of rigid tap is accelerated greatly, and the grade quality of whorl did not drop, also did not cause tap to rupture. Its process designing and function are very similar, apply to rigid tap craft, but serve takes system and CNC control high speed communication can be used only between the system. Cycle of rigid tap treatment can shorten 50% above, need a large number of tap when the component such as car engine cylinder body and air cylinder lid when, its spare time is very apparent. Now, through using method error study function already included to get the treatment that cuts treatment, rigid tap and free outline. These ability can make method error learns software application to manufacture technology at any CNC almost, have reduce treatment cycle and all sorts of good points that increase treatment precision, after use adaptability controls systematic software, need special machine tool or special process designing technology no longer. Method error study already applied at serve to take fine tuning. Reactive force and attrition force can produce certain effect to all operations. In electric machinery converse when rotating, idling games produces delay time effect and very outstanding in process of circular arc cutting. Of reactive force quicken a function to be able to use method error to learn software to undertake fine tuning, in order to remove the idling effect that the expression in circumferential interpolation process must produce. In circumferential control, controller undertakes adding correction to turning over brunt to quicken a function, quadrant of automatic fine tuning is outstanding. After this, motion, right to all CNC special part program will have positive effect. The productivity that improves a machine tool controls farther stimulative CNC systematic improvement. Because traditional solution is,carry out below natural condition of the static state, because this has certain limitation. Now, use method error study and the CNC system that can correct its method error, can raise treatment speed and treatment precision greatly. In future development lieutenant general enlarges method error to learn the function of software further, will special machine tool applies at common treatment. Current, the treatment that method error studies to had used free rough sketch, get cut and tap. Control software can correct method sum of errors to repeat the simultaneous error with the common place in machining cycle. Application of method error study can shorten treatment is periodic, raise treatment precision. In the meantime, use afore-mentioned characteristics to make the application of CNC system achieves efficient sex: The machine tool of other and current treatment such as the grinding treatment of the milling treatment of spare parts of the bore that is like car engine spare parts and tap, big batch, cam, oriented cutting and piston lathe. CNC Milling