The research of technology of database of high speed cutting

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Dr. Salomon put forward 1931. 20 centuries after 60 time (especially since 80 time) , each industry developed country values the progress of technology of high speed cutting very, invest a large number of manpower and capital in succession, reach its to high speed cutting relevant technology undertakes study to develop. Since 90 time, the research of technology of high speed cutting takes person maturity stage, its apply limits to expand further. Think commonly, high speed cutting is the 5 ～ that show cutting speed exceeds common cutting 10 times or rotate speed of machine tool main shaft is in the cutting of 10000r/min above. Actually, what process means and cutting tool data according to workpiece material, cutting is different, the cutting speed limits of high speed cutting can have corresponding change. Tell wraparoundly, the cutting treatment that has following feature can call treatment of high speed cutting: ① cutting rate is high: ≥ of V of rate of 500m/min milling of ≥ of turning speed V 300m/min, auger cut speed V ≥ 200m/min; ② feed is big: 50m/min of ～ of feed speed Vf=20 or Fz=1 of every blade feed.

0 ～ 1.

5 Mm. Relative to at common cutting character, use technology of high speed cutting to be able to make the material be favored with inside unit time is divided rate rise 3.

5 times or taller, at the same time finished cost can reduce 20% ～ 50% , treatment precision and treatment surface quality can raise 1 ～ 2 class, this is world each country the main reason that researchs technology of high speed cutting eagerly. In addition, technology of cutting of applied high speed still is opposite convertibly the cutting of material of certain difficult treatment machines means, if be opposite directly,milling is machined, implementation " grind in order to cut era " etc. The development general situation of database of 2 metals cutting builds cutting database, offer for mechanical manufacturing industry reasonable reaching optimized cutting data is a kind of when raise cutting to machine efficiency and economic benefits significant step not only, and cutting database still develops all sorts of modern production technologies (wait like CNC, CAPP, CAD/CAM, FMS, CIMS) important research foundation, it is these systems the main component of communal production database. From 20 centuries since 60 time metaphase, each industry developed country begins to build metallic cutting database in succession, the metallic cutting production that abounds with accumulate and storing and test data. Database of cutting of the first metal was 1964 be studied by American technology cutting company and laboratory of air force material are built jointly jointly, call center of data of air force processability (AFMDC) . After this. Each industry developed country developed respective metallic cutting database in succession, the center of MDC(machinability data that compares the famous INFOS of confederative Germany before having and United States among them, the follow-up version) of AFMDC. Our country from " 65 " the research that evening begins metallic cutting database works, the unit such as university of science and technology of university of university of Chengdu tool institute, southeast, Nanjing aerospace university, die young ferry, Chengdu undertook study the work in great quantities, built a variety of practical metallic cutting databases (the CTRN90V1 of software of database of turning of muti_function, multipurpose that develops like Chengdu tool institute.

0 reach follow-up version, the) such as the NAIMDS of system of database of small-sized and general cutting that development of Nanjing aerospace university develops. The database of cutting of core technology metal of database of cutting of 3 high speed is in metallic cutting theory studies relatively mature, cutting machines craft below the condition with very rich parameter of general application, cutting, those who accompanying computer technology, database technology and advanced cutting processing technique is ceaseless develop and development rises. Although each country of current, world built a lot of metallic cutting databases. But still do not have the database that applies to treatment of high speed cutting, and the port with build database of high speed cutting to be had to popularize and using processing technique of high speed cutting very principal. Cutting database divides high speed to must be had like common cutting database recommend cutting cutting tool and outside providing the basic function such as optimized cutting parameter. Still answer the characteristic according to oneself of high speed cutting, solve the following function and structural problem: With the communication with good software of numerical control system, CAD/CAM and interface: Because high speed cutting uses numerical control machine tool or machining center mostly, automation rate is very high, because database of cutting of this high speed must have the good communication with numerical control system and interface function, ability produces the advantage of high speed cutting adequately. Numerical control technology develops nearly ten years very rapid, numerical control system already from have pure motion to control functional development to become can undertake data of graphical picture processing, communication, network transmits the number of open mode computer that waits for a variety of complex functions to control a system. Use computer communication and interface technology but direct or it is through CAD/CAM software between the numerical control system of database of high speed cutting and numerical control machine tool or machining center undertake inquiring, optimize, transmit wait for a series of data manipulation. Inferential function: Start as a result of technology of high speed cutting later, still do not have the manual of data of cutting of general high speed that can be used at production directly at present. Practicable has one fraction only the cutting data of commonly used material. Artificial intelligence technology just provided effective help to build the inferential function of database of high speed cutting, benefit is based on regulation with artificial intelligence or the inferential technology of example, faintness controls a technology to wait, can machine example to generate new cutting data according to existing success. Direct or serve as available data via person database is defeated after experiment test and verify. Distributed structure: Database of high speed cutting should have distributed structure, so that be in dispersedly for large production company,the production of different situation and sale branch provide a service. Database technology is the development in computer technology most definitely, one of technologies with the widest application, current the technology mixes the most mature relation database to already received rapid development and extensive and effective application theoretically, appeared one batch is based on the relation database of the commercialization of structure of Client/Server of concern data model, support and distributed structure to run a system (the) such as the 0racle 8 of company of the SQL Server 2000 that is like Micosoft company, 0racle. Provided good technical support to build database of high speed cutting. Network function: Database of high speed cutting should have network function, so that the user passes the cutting data with computer network relevant inquiry related each, offer relevant fundamental data to be mixed as Intranet/Internet technology for all sorts of advanced production technologies the development of production technology, make adroitly, make in coordination, make remotely, the network makes the significant progress way that waits for an advanced technique to already made production technology. The network function that the flying development of computer network and communication technology and wide application are database of high speed cutting provided solid applied base and strong technical support. Calculate a function: Database of high speed cutting is passed use already technology of some artificial intelligence technologies, artificial nerve network, finite technology of analysis of yuan of analysis technology, statistic and model of temperature of all sorts of cutting force models, cutting, cutting tool wears away the model, should have the function that forecasts certain cutting result, if cast surface roughness of the treatment precision of workpiece, surface and cutting tool service life,wait. Graph database of cutting of 1 high speed is basic functional sketch map pursues the basic function of the database of cutting of basic structure high speed of database of cutting of 4 high speed is like block diagram of basic structure of database of cutting of 2 high speed the graph is shown 1 times. Among them, input a specific requirement that raises according to oneself need for the user, if workpiece reachs treatment to ask the requirement such as a material type that reflects work, over all dimension that machines around, public errand; Be defeated by item of expenditure is the output result after database of high speed cutting undertakes handling to user demand, be like cutting tool material, model it is the kind of cutting tool stuff that the database recommends to the user, brand. The structure that integrates database of existing metal cutting and computer and database technology develop the current situation, we think, database of high speed cutting should use C/S structure, this structure has distributed memory and the function that handle data and good dynamic sex, and facilitating augment. In the meantime, database of high speed cutting should use the achievement of artificial intelligence technology, have good, economic reasoning function and calculate a function, the promotion application that is technology of high speed cutting provides effective auxiliary tool. The basic structure of database of high speed cutting is shown 2 times like the graph. Database of high speed cutting basically evaluates the part such as system of test and verify, application development system, network and communication interface, output and user to comprise by source of database, data, data. Database part: Database by cutting data, knife its, go up, the composition of many minutes of libraries such as data of example of clamping apparatus of machine tool, tool, model, treatment, other, among them: ① cutting data; Cutting parameter library basically stores the data such as fluid of property of deepness of cutting speed, cutting, feed, cutting, type, cutting; ② cutting tool: The data such as business of utility of material of memory cutting tool, appearance, model, treatment, production; ③ workpiece: The data such as property of type of memory workpiece material, brand, appearance, treatment, treatment; ④ machine tool: The data such as business of parameter of model of memory machine tool, technology, production; ⑤ tool clamping apparatus: Memory tool reachs the data such as clamping apparatus type, utility; ⑥ model: Memory cutting aprametric model, optimize model of durability of model, coefficient model, cutting force model, cutting tool to wait; ⑦ machines example: Memory processes example data; ⑧ other data: Store user management, database manages the data that waits for a respect. Data cause share: What database of high speed cutting uses the source of data, the data such as clamping apparatus of the cutting parameter that includes manual of factory, lab, document to offer, machine tool, cutting tool, tool, material, model. Data evaluates part of system of test and verify: Database of test and verify is offerred or convey the data of person database. Part of application development system: Person of inquiry of the data that finish, collection, newer, revise, delete, optimize, transmit, effect of example inference, treatment is forecasted, the applied function such as database management. 5 epilogue research, building database of high speed cutting is a when at present mechanical manufacturing industry is faced with great and real task. Database of high speed cutting has important sense to the promotion application of technology of high speed cutting, what what database of high speed cutting recommends is use when high speed cutting is machined, the cutting dosage that the course optimizes, can improve the treatment quality of workpiece and manufacturing efficiency significantly, reduce finished cost, raise the economic benefits of the enterprise thereby, enhance the market competition ability of the product. To industry of whole metal cutting, database of cutting of use high speed will raise the cutting of entire industry to machine a level greatly, obtain enormous economic benefits. CNC Milling CNC Machining