Be based on turning to machine cutting tool choice of the feature and method

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1 foreword is used extensively of the development of modern production technology and CNC Machining equipment, drove the progress of cutting technology greatly. As production treatment process numerical control changes the need with automation, put forward high reliability, high accuracy, macrobian life, fast dislocation to change to metallic cutting cutting tool, break bits good wait for higher demand. Since 80 time, but dislocation does not grind cutting tool to already was applied extensively by each country again, but but the application that dislocation does not grind bit and technology of cutting tool CAD/CAM again and development, make the appearance sort of design of cutting tool structure and cutting part becomes very various, to machining and personnel of cutting tool design logical choice cutting tool brings certain difficulty. In the meantime, the addition of bit model also is purchased to bit and the sale brings inconvenience, for the user fast, efficient it is difficult to reach right choice cutting tool to increase. Make to make a company fast to market demand answer, in cutting treatment, cutting tool of fast and efficient choice becomes cutting to machine external demand of the system. Machine a feature according to differring, what automatic choice requires cutting tool to implementing high automation cutting is machined or unmanned treatment has very important sense. 2 but structure of dislocation lathe tool but dislocation lathe tool places type cutting tool for the machine that uses extensively. Its geometrical parameter is assured completely by bit and knife chamfer, do not suffer the effect of worker technology level, cutting performance is accordingly steady, suit production of modern big batch to use. It is with ISO standard exemple, but dislocation lathe tool by, 10 features code name is comprised, its date see a table orderly 1. The expression that expresses model of 1 lathe tool methodological date date of P T G N R 20 20 K 16 Q 1 of model of 1 2 3 4 5 6 7 8 9 10 the clamp pattern that shows lathe tool bit (P states lever is prejudicial type clamp) ; 2 represent form of lathe tool razor blade (T expresses triangular razor blade) ; 3 represent form of lathe tool head (G states 90 ° slant lathe tool of the circle outside the head) ; 4 a horn after representing way of lathe tool razor blade (the horn after N represents its way is 0 ° ) ; 5 a cutting way that represents lathe tool (R expresses right cut) ; 6 a height of point of a knife that shows lathe tool (20 state height of lathe tool point of a knife is 20mm) ; 7 an arbor breadth that indicates lathe tool (20 state width of lathe tool arbor is 20mm) ; 8 a length that shows lathe tool (K states lathe tool length is 125mm) ; 9 a side that shows lathe tool bit is long (16 state side of lathe tool razor blade is long for 16.

5mm) ; 10 express to differ measure fiducial exact form lathe tool (Q expresses with lathe tool outside flank and back end face are measure fiducial exact form lathe tool) . The principles of 3 lathe tool choice that are based on treatment feature and graph of principle of choice of methodological lathe tool the feature of geometrical parameter treatment of 1 lathe tool is the treatment related working procedure is machined with this in showing the spare parts machines a process information is compositive. Outside be like, round turning feature can include initiative diameter (the spare parts diameter before treatment) , the smallest diameter that finish (the smallest diameter that after the spare parts is machined, allows) , the biggest diameter that finish (the biggest diameter that after the spare parts is machined, allows) , treatment grows, if pursue,1 is shown. From the graph 1 can see, treatment feature describes the treatment demand of workpiece well and truly, and the premise that these requirements are machine tool of make choice of, clamping apparatus, cutting tool and its craft parameter. Because every kinds machine a feature to need to input many features parameter, to make cutting tool chooses to become forthright goes to the lavatory, here has qualitative description to all sorts of treatment features only. Finish diametical value to machine turning cent to be rough machining according to initiative diameter and spare parts treatment (semifinishing machining) with finish machining two kinds, its according to spare parts stiffness cent is stiffness to be mixed high stiffness is low two kinds. Integrated afore-mentioned requirements, will outside component of round turning treatment is the following feature of 4 kinds of treatment: The circle outside ① turning (thick cut or half essence is cut, stiffness is tall) ; The circle outside ② turning (thick cut or half essence is cut, stiffness is low) ; The circle outside ③ turning (essence of life is cut or half essence is cut, stiffness is tall) ; The circle outside ④ turning (essence of life is cut or half essence is cut, stiffness is low) . According to the treatment of afore-mentioned qualitative descriptions the feature chooses cutting tool. For example, the circle outside machining a feature to be turning (thick cut or half essence is cut, stiffness is tall) when, because rough machining or semifinishing machining basically are to excise redundant metal, cutting power is greater, reason should choose firm bit clamp way, horn of point of a knife chooses as far as possible a few bigger, in order to increase strength of point of a knife. Because reduce tool cutting edge angle to be able to bring about Fy of radial component of force to increase, when the stiffness when machining complex is stronger, can reduce cutting tool tool cutting edge angle appropriately. Small cutting tool tool cutting edge angle can increase the cutting blade length that participates in cutting, reduce the negative charge of blade of unit length cutting, improve the service life of cutting tool thereby. Express 2 turning to machine feature and the corresponding relation with cutting tool code name code name of the horn after serial number turning machines cutting tool of code name of tool cutting edge angle of cutting tool of code name of appearance of diagnostic razor blade the circle outside 1 car (thick cut or half essence is cut, stiffness is tall) C, t, f, w F, l, g, c, AN, c, the circle outside P 2 car (thick cut or half essence is cut, stiffness is low) T, f A, b, g, l, JN, the circle outside C 3 car (essence of life is cut or half essence is cut, stiffness is low) T, s, f A, b, d, e, g, l, JN, the circle outside C 4 car (essence of life is cut or half essence is cut, stiffness is tall) T, f A, g, l, j N, c 5 car is direct end panel T, s, f A, b, d, e, g, l, JN, t of end panel of shoulder of stage of C 6 car, f, d, c A, g, j, l N, s of shoulder of stage of C 7 turning, f S, g, c, f, YN, c of the aperture inside C 8 boring, d, a, t, RE, a, g, n, PN, d of turning of C 9 profile modeling, a, t, c, k, SQ, x, j, l, YN, c, p carries afore-mentioned analysises and actual production survey, we decided 9 kinds of turning machine a feature. The corresponding relation of feature of treatment of these 9 kinds of turning and cutting tool code name is preliminary and affirmatory see a table 2. The first when cutting tool chooses the clamp way that the method chooses according to the user to decide cutting tool, again basis the first undertake choosing for the first time, the cutting tool that will accord with place to pick clamp way is singled out entirely come, program general is affirmatory on the foundation that chooses this the 2nd, 3, 4 code name. After the user chose to machine a feature, the basis expresses medium choice principle, right 2, 3, 4 same number undertake " or " operation, different name undertake " and " operation, decide before 4 code name of cutting tool thereby, the cutting tool code name that can decide according to place so chooses to give the cutting tool that accords with treatment feature requirement from inside cutting tool database. The implementation of the implementation foundation theory of system of selection of 4 lathe tool and crucial technology system uses object-oriented Visual C++ programming language, the powerful function that developed Windows process designing and knowledge get the latent capacity of the respect. Inferential mechanism of the system is used to inference, accept the information that the user inputs by man-machine interface, put forward a request to knowledge base and database for initiative premise with this, invoke corresponding expert knowledge and experience, hand in undertake inference by inferential machine, if produce likely result, conduct the result optimize module to undertake optimizing, user interface place shows eventuate optimizes a result finally. Functional brief introduction and basis of systematic implementation user machine method and treatment feature to choose likely item, can spark the specific regulation in program knowledge base, these regulation included much expert experience, undertake from this to inference. Considering the choice leeway of the user, give out a series of cutting tool brands of contented user condition, and complementary explain with proper entry, the user can choose appropriate cutting tool according to his demand. The detailed information memory related to all sorts of cutting tool model is in library of program cutting tool, user make choice of a kind of cutting tool while also can spark the relevant regulation in the database, it is next condition of inferential preparation premise. Apply example to pursue inference of 2 lathe tool advocate bound user is in above all optimize advocate interface (see a picture 2) form of solid of clip of choice lathe model, cutting tool and workpiece treatment feature, the cutting tool that module of cutting tool choice can choose according to user place places solid form, search the code name of all cutting tool that accords with a condition from inside cutting tool database. For example, form of solid of the reel that pick a knife is P, the work that the system chooses according to user place machines a feature, the reelection in the cutting tool code name that combines user place to choose the form that place firm from a surname that already had picked takes the cutting tool code name that accords with workpiece to machine a feature, final system will choose the code name of all cutting tool that accords with a condition from inside cutting tool database, in the list casing of the dialog box of cutting tool choice that includes cutting tool choice module, if pursue,3a place is shown. Code name of optimal cutting tool is chosen in the list casing of this dialog box when the user hind, in the explanation that cutting tool code name can appear on the right side of its, if pursue,3b place is shown. In advocate the detailed information that the cutting tool interpreter that can fall through tool menu in the interface will come to know cutting tool type (see a picture 4) . (A) pursues interface of interpreter of 4 lathe tool (B) pursues 3 lathe tool show an interface from this, the module of cutting tool choice that is based on treatment feature is preliminary already build, OK on this foundation the actual production need according to each factory undertakes perfecting to expert knowledge base. In the meantime, of module of cutting tool choice build what optimize expert system for parameter of CNC Machining craft planned premise requirement. What 5 epilogue are aimed at sort of cutting tool of the cutting in contemporary machining is complex and various, to realize the fast and automatic inquiry of cutting tool brand, the design built the cutting tool that is based on treatment feature to select a system. It can undertake an analysis to all sorts of features that often appear in cutting treatment at present, optimize summary to give a few kinds of main features that suit average production demand, draft a corresponding inferential regulation to different treatment feature, choose the different treatment feature of cutting tool according to user place, spark corresponding inference is regular, choose to give the cutting tool that treatment requires thereby. Of system of cutting tool selection build fast choice has to cutting tool in coming true to be machined in cutting, reduce artificial inquiry operation, managing work time, improved manufacturing efficiency CNC Milling CNC Machining