Get used to the processing technique classification in CNC Machining domain and application oneself

Suiting oneself is to show the change to the environment has get used to ability oneself, namely the systematic change according to the environment, adjust its oneself to make its behavior is in new or the environmental make known to lower levels that has changed arrives best, perhaps be concessional character and function at least. Get used to the autopilot of technical traceable plane oneself. It is OK to get used to treatment oneself cent suits with geometry oneself oneself for craft, craft suits to be able to be divided again oneself for optimal from adaptive control system (Adaptive Control Optimization, ACO) with tie type from adaptive control system (Adaptive Control Constraint, ACC) two kinds big [1] . ACO goes after a kind of first-rate to machine process index, like rate of handling time, excision or exterior quality some index is achieved best. ACC is what should maintain some kind of tie is constant, be like force of torque, cutting or cutting power, in order to improve treatment efficiency, maintain treatment process stability to reach assure to machine quality. ACC is in at present the application on equipment is opposite wider. Geometry suits oneself is the appearance that follows a spare parts or the treatment that the position changes and have, also call adaptability treatment. Getting used to CNC Machining oneself is can of the change according to current equipment negative charge, spare parts be out of shape, of spare parts surplus not all, imprecise installs mix condition to wait to be made in time adjust, in order to get used to the condition of current equipment or spare parts, complete specific treatment. Get used to processing technique to be able to apply in surplus oneself not all treatment of complex curved surface, solder type whole leaf dish leaf of treatment, whole dish the clip of not accurate outfit of the finish machining of repair, hollow lamina, workpiece and raise treatment efficiency to wait for many sided. Getting used to treatment oneself is the product that CNC Machining technology develops certain level, it is a kind of advanced treatment concept, it is technology of sex of the look up before implementation digitlizes what workshop and nobody machine. The working principle that gets used to processing technique oneself and application get used to treatment to there is kind of 3 kinds of jobs normally in CNC Machining domain oneself. The 1st kind is to apply on equipment, be numerical control system is important and outspread, the power that achieves pair of equipment in machining a process through soft hardware, load or speed undertake real time is monitored automatically with adjust, in order to get used to current treatment condition; The 2nd kind is to be based on converse project, get used to the little change of spare parts appearance, therewith changes and machine; The 3rd kind is to be below the holds clip not accurately quickly state of the spare parts, wait for a method through measuring, the not accurate outfit that gets used to a spare parts quickly places condition, realize accurate treatment. 1 application at numerical control equipment from adaptive control technology in process of cutting of common CNC Machining, the feed rate that numerical control machine tool has set beforehand by NC program undertakes divide evenly fast treatment, and actual metallic cutting process is one has height nonlinear, when change, violate the complex and dynamic process with serious, strong uncertainty randomly, of cutting surplus and cutting tool wear away degree is changing ceaselessly, the feed rate that makes in NC program cannot make machine a target to maintain best. Force of the power that the change of cutting operating mode brings about equipment, torque, cutting and brace up quiver waiting for parameter also is constant change, cutting tool ruptures, cutting tool wears away surveillant method lack. Equipment of numerical control of urgent need has this kind of state to get used to ability oneself. Those who apply data of numerical control machine tool to collect monitoring and self-adjusting cutting parameter in real time from adaptive control technology, can collect supervisory equipment parameter in real time, feed rate can follow the different real time of an actual cutting condition to change, inside below the expert system of buy and the combinative action from adaptive control technology, wait for parameter according to current main shaft load, feed rate adjustment arrives the numerical value of optimization, improve treatment efficiency thereby, and have following protection function: Milling cutter ruptures protection, cutting tool wears away monitoring, main shaft overload is protected. The development work that gets used to equipment oneself was begun before abroad is earlier, also research and development of all kinds get used to treatment facilities oneself, application is measuring cutting tool to wear away, the equipment such as treatment of lathe, drilling machine, report, grinder, machining center, tie goal is singler, if can maintain the drilling machine with constant torque to wait, application is still at present unpopular. The OMATIVE of Israel actors or actress mill controller OMAT-PRO is the main delegate that gets used to processing technique oneself, it undertakes restraining to main shaft power, master the groove of main shaft power through learn and learning again, in machining a process next, real time monitors the change of main shaft power, adjust feed in time to lead [2] . To it the production of network of numerical control machine tool of form a complete set manages software OMAT-PRO, the integrated production that can realize machine tool of numerical control of stage, much to sheet stage manages, can generate load and the metabolic curve that feed leads in real time on screen, monitoring records the data in producing a course. Supervisory system of German ARTIS cutting tool is the cutting tool in machining a process to the machine tool wear away or break knife, main shaft overload of collision, treatment, cutting tool is lopsided a system that waits for machine tool condition to undertake real time monitoring, can adjust through the change of torque of monitoring main shaft feed speed, come true from adaptive control. OMAT and ARTIS apply in abroad more, the large numerical control that develops in me also got applied on the machine tool. There is semifinished product of a lot of structural members in war industry product is modular forging, surplus distributings extremely inhomogenous, rough machining process is fluctuant and tremendous. To the treatment of spare parts of large and complex curved surface, because semifinished product is used,cast means, surplus is very inhomogenous, fluctuant bigger, traditional cutting parameter decides according to the largest surplus, it is commonly in whole treatment process changeless, criterion cutting parameter normally on the low side is mixed with protective cutting tool machine tool, such efficiency are very low, develop the characteristic with efficient equipment of large numerical control hard. Keep constant of power or load get used to treatment means aux will be able to to handle this situation well quite oneself. OMAT-PRO can record main shaft power and the metabolic curve that feed leads, make feed rate undertakes adjustment along with laden change, when load rises quickly, feed rate falls, rise conversely, final result is equivalent to getting a best average feed fold, not only can protect equipment, cutting tool, still can improve efficiency apparently. If can carry constant negative charge,be in the biggest allowable value standard, will OK great improve efficiency. The cutting that passes us experiments, its machine the machine tool that installs controller of OMAT actor mill efficiency can raise 10%~30% , suit rough machining phase especially. In CNC Machining process, the mixed physical element effect such as cutting force machines quality, efficiency and safety, and general now numerical control technology returns a control of sport of geometry of be confined to, complex to these physics element has not been involved. Get used to processing technique to be able to undertake controlling to these technologies oneself, but put in a few problems that did not solve at present, what basically have cutting load is online and accurate measure, the control strategy that machines a process and the implementation method that get used to processing technique oneself. Stability of the relationship that needs to study electric current of electric machinery drive and cutting force and cutting torque deep, pilot, intelligence controls a system. Still be in research and development and partial promotion phase on the whole from adaptive control equipment, cost is higher, online detect and react career respect still remains to rise in real time, the environmental element of the tie is not quite comprehensive still, limitation is bigger. Implementation machines the real time monitoring of the process to the machine tool, the safeguard function with raise a machine tool to machine efficiency, improvement to produce quality quantity to have unmanned to automation treatment, particular, the care and maintenance that also conduces to a machine tool and breakdown are diagnosed. The real time that uses numerical control device is monitored automatically getting used to processing technique oneself with what adjust will be future the necessary evolution trend of machine tool of high-grade numerical control, also will be prospective network is made, the necessary technology that digitlizes workshop and unmanned factory. Certain whole Xie Pancai uses the 2 constructs model and process designing adaptability processing technique that are based on converse project solder craft general dish body and lamina solder an organic whole, will solder next place treatment reachs the designated position. Because the treatment of blade is mixed,solder the error of the appearance that craft creates blade and position is bigger, cannot undertake machining by academic digital-to-analogue. The clear root after solder is machined should the position of the lamina after the basis solders and appearance are used get used to processing technique oneself, will academic digital-to-analogue undertakes move or is out of shape through technical measure, thereby the be identical of actual condition photograph with the spare parts, get new craft digital-to-analogue, undertake on this digital-to-analogue process designing is machined next. Integral leaf dish or the rehabilitate of blade also is similar working principle, because integral Xie Pangong makes the environment in high temperature high pressure fall, the lamina after working for some time is out of shape somewhat necessarily. Because Xie Panshi component is high and treatment cycle is very long, so leaf dish repair technology appears very necessary. Integral leaf dish the loss is the lamina on its normally local damage, the local injury of blade and rehabilitate must get used to the actual figure of blade, ability makes sure repair place and former lamina transfer glossily receive smooth, and cannot pure have repair by academic digital-to-analogue. So Xie Panxiu answer kind the requirement that the job also raised to get used to processing technique oneself, its work basically the principle is to be based on converse project, divide roughly for a few following measure: (1) blade detects, detect its are out of shape circumstance; (2) the function that uses software of converse project model, the design digital-to-analogue undertakes is out of shape, in order to suit now metabolic lamina, get new craft digital-to-analogue, use at the process designing of CNC Machining; (3) to Xie Panxiu go back to work is made, v of blade loss place hind, press afore-mentioned craft digital-to-analogue process designing, the appearance of edge lamina itself and position have redundant solder tumor excising. To soldering type whole leaf dish clear root works, undertake by afore-mentioned craft digital-to-analogue process designing clear root is machined (graph 1) . Nextpage pursues 2 middle period piece have local loss, the lamina after the job of high pressure of course high temperature also has some be out of shape, will get hurt after place v, it is very difficult that if use a design directly,digital-to-analogue process designing machines v place receive glossily with circumjacent curved surface smooth. Need to use at this moment get used to working way oneself, a group of features are measured to nod on blade, input design digital-to-analogue, with the design digital-to-analogue contrast is analysed, the work of deformation that uses converse engineering software can, the design digital-to-analogue is out of shape those who make accord with measure a feature to nod, machine v place in the process designing on this digital-to-analogue next, aux will be able to is received glossily with circumjacent curved surface quite smooth. Graph the adaptability treatment of 2 lamina rehabilitate is current, the Adaptive Machining of DELCAM can come true online detect, advocate model, process designing and treatment. Be based on afore-mentioned principles, use general measurement, build method of model, process designing to also can realize treatment of this kind of adaptability, pass namely measure machine measure or online detect, get is out of shape data, input data CAD system, with the design the model undertakes analytic comparing is opposite, use the editor function of CAD next, get new craft digital-to-analogue, on this craft digital-to-analogue process designing is machined can. The PSI+ software of Starrag company and RCS lamina machine special software to also have this function. If the adaptability processing technique that 3 spare partses locate the state that hold clip falls not accurately does not have appropriative tool clamping apparatus, adjust accurately what should implement a part, the fixed position that hold clip should spend a few hours normally, and be used to as a result of the operation of everybody differ, the spare parts quality that is the same as batch assures not easily also. Especially bulk the tremendous, workpiece that hefts several tons, positional fine tuning is very difficult also, flexible perhaps very big envelope kind spare parts, basically do not have fiducial, should realize traditional sense to go up search accurately almost as impossible as outfit clip. Accordingly, if can get used to the clip of not accurate outfit of the spare parts, complete accurate treatment, way of this kind of work also is one kind gets used to treatment oneself. Spare parts weight exceeds 10t, and its length exceeded workbench, after the spare parts puts workbench, cannot move, and the position is random. Because the spare parts exceeds the journey range of the machine tool, use machine tool itself to cannot have measured its place, dog with laser above all so the treatment coordinate that appearance builds a machine tool is, the place of a few features on workpiece is measured below department of machine tool coordinate, in inputting design digital-to-analogue, undertake design digital-to-analogue positional shift and deflexion next, with metrical feature the dot plans to close, build department of process designing coordinate below working coordinate department next, all machine program should be in new treatment coordinate department grow into useful timber of serious new student can be used. After treatment of spare parts one aspect of the matter is finished, turn around afresh spare parts, will other one aspect of the matter is put go up in machine tool workbench, weave afresh by afore-mentioned methods machine program. Treatment of this kind of adaptability completes through following measure normally: The spare parts locates roughly on machine tool workbench after installation, what use a machine tool above all is online detect function, act makes up good program to undertake spot position detect to the certain feature of workpiece first, collect a series of places from workpiece, these dots are OK by a series of optimal the exact position that cooperates a process to be used at defining work, use the certain function of special software or numerical control system next, the relation that computation reachs the real position of workpiece and machine tool coordinate are fastened, revolution controls a process or slant afresh next buy treatment coordinate is, call numerical control program to undertake machining again. The POWER INSPECT function of DELCAM is the delegate that holds clip quickly. It uses the program that has written beforehand to undertake to workpiece spot position detects, use NC PARTLOCATOR next program of numerical control of can fast new deflexion, use at treatment. The numerical control system such as Xi Menzi also has treatment coordinate to fasten all sorts of instructions of deflexion, through deflexion treatment coordinate is fastened and not be to slant the means of buy spare parts, make the process designing coordinate of numerical control program fastens correspondence of as real as workpiece position, also can realize the accurate treatment that the spare parts locates condition falls not accurately. The adaptability processing technique that holds clip not accurately quickly is very useful technology in working practice, it cancelled conventional treatment to make work mediumly standard search with what the coordinate of the machine tool fastens coincide link, complex tool can be saved below certain and special situation, shorten treatment is periodic, the necessary technology that and also be prospective implementation digitlization installs clip, fast outfit clip, intelligence to hold clip. The application that gets used to processing technique oneself looks into the development from adaptive control technology to already had 40 old histories, got very great progress on theory and practice, reach the development of VLSI as technology of converse engineering soft hardware, sensor technology especially, created advantageous condition to get used to a technology oneself, from adaptive control technology not only get applied extensively in the respect such as aircraft missile flight control, and get developing in CNC Machining domain, obtained certain result, solve a spare parts to press the contradiction with the procedure treatment that determines beforehand and incommensurate change of the operating mode in machining a process. Numerical control equipment is had get used to process capability oneself will great the treatment efficiency that improves numerical control facility, and can be opposite wonderful protective action reachs since numerical control equipment. Be based on converse project principle get used to processing technique and outfit of not exact location to place processing technique oneself, in integral leaf dish the certain and specific domain such as repair, large work produced tremendous effect. What can foreknow is, in prospective automation treatment, unmanned factory reachs certain and special treatment to wait for a domain, get used to CNC Machining technology to will have vast development space oneself. CNC Milling