Face the research of technology of program of craft division of labor that network makes

1 physics makes unit physics create unit (Physical Manufacturing Cell, PMC) it is to point to what be in a workshop and center relatively, the combination of a certain number of stage physics equipment that can satisfy craft of some kind of treatment to ask. Physical production unit is common with spare parts a group of things with common features undertakes designing for the foundation, the requirement completes the production process with a spare parts main or whole a group of things with common features inside production unit. Physical production unit is the basic composition unit that produces a workshop, namely workshop by or a certain number of physics makes unit composition. Accordingly, allied to the enterprise, production resource can create unit layer and equipment layer by enterprise layer, workshop layer, physics 4 will describe. 1.

2 logistic production unit create unit logically (Logical Manufacturing Cell, LMC) it is to point to to be opposite on logic the description of the process capability that achieves trait of some kind of spare parts. Actually, it is a basis the typical feature of spare parts a group of things with common features and the treatment method that its machine a requirement and determine. Create unit process capability through logistic production unit can be refined and describing physics. Normally, a physics makes unit have the process capability of a variety of spare parts features, accordingly, logistic production unit is the description of the partial process capability of physical production unit, physical production unit can be decomposed create unit for many logic. What need points out is, create unit with physics and not be undertake for main target with the machine tool process capability is described, the repetition that can avoid process capability effectively is conveyed. For example, if a physics makes unit be comprised by much stage machine tool, so do not need to have a description to every machine tool. 1.

Course of craft of logic of course of 3 logistic craft (Logical Process Route, LPR) expresses the treatment process on logic of a spare parts, it is the orderly combination that creates unit logically. It is the course of craft of spare parts treatment that has nothing to do with specific production resource, described the main process of the spare parts and demand of its process capability and tie, if process the information such as quality, cost, time and demand of special production facilities, these tie information are to match specific physics to create unit and the tie condition that optimize resource configuration. The goal that advances idea of logistic craft route is to resource is made specificly configure a circumstance in the oversight when craft course is designed, with simplifying craft course designs decision-making process. Logistic craft course is the orderly composition that creates unit logically, logistic production unit is the characterization that makes unit process capability to physics, mix in spare parts workmanship corresponding relationship is established between production resource, for craft the voluntary program of course of division of labor laid methodological foundation. 1.

Course of 4 executable craft is executable craft course (Executive Process Route, EPR) is one makes the craft line that can use actually of unit and relevant couplet with specific physics. Course of 2 craft division of labor generates a process to pass the analysis of afore-mentioned concepts and definition, can delimit compasses of craft division of labor cent is 3 main processes: Course of design of logistic craft course, executable craft is generated and course of craft division of labor is generated, if pursue,1 is shown. Above all, design logistic craft line according to spare parts information; Next, the map that creates unit through making unit and physics logically makes executable craft line; Finally, according to certain tie the condition undertakes resource optimizes configuration, make line of craft division of labor [1, 2] . Configure a circumstance according to making resource, a spare parts often can have line of many executable craft. The line of many executable craft that passes pair of generation undertakes optimizing assessment according to tie condition, reach course of optimized spare parts craft, be in its physics production unit the enterprise again / the workshop adds craft line, formed line of division of labor of spare parts craft. Can see, hind process of very easy implementation handles two processes automatically. Then, the design of logistic craft course becomes the main problem that craft division of labor plans. This literary grace realizes intelligence to change with the method that is based on knowledge decision-making, in order to raise automation rate of the system. Such, from go up at all the problem of program of craft division of labor that solved dynamic alliance. Model of information of 3 spare partses builds the base that spare parts information is craft course design. To satisfy the information requirement with decision-making process, need builds model of applicable spare parts information. If model of spare parts information is complex, need to input more information, not only loaded down with trivial details, and take time; Conversely, what go against process is automatic and decision-making. Because craft division of labor plans to belong to overall craft design phase, do not need to design detailed process, the property of main part information that model of spare parts information wants to include to affect thick craft course to arrange only can. Model of spare parts information is mixed by administrative information, overall technology information 3 parts constitute diagnostic information. Information of spare parts government includes the order in which editions are printed of code name of spare parts name, part drawing date, product, amount, spare parts and data number to wait; The spare parts is overall technical information is comprised by craft information, material information and semifinished product information, among them, craft information includes quality of dimension of outline of spare parts category, spare parts, spare parts, precision, surface roughness, heat treatment, finishing and special type to examine etc, material information includes strength of hardness of condition of norms of brand of stuff kind, material, material, heat treatment, material and data to wait, semifinished product information includes dimension of semifinished product sort, semifinished product and semifinished product quality; Information of spare parts feature includes diagnostic parameter and its geometry develop to attack information. But, because be in,level of program of craft division of labor needs to consider to affect the main appearance feature of spare parts technique and production resource choice only, need not care horn, round wait for auxiliary feature with step face, the geometrical develop that also does not need a feature attacks information, so the diagnostic information of the article shows the part is main only feature and its parameter. Nextpage4 is based on logistic craft course of knowledge to design craft division of labor to plan is the job with an experience very strong sex, and the program of craft division of labor that faces dynamic alliance must face the natural resources with huge amount to configure not only, and the dynamic sex that faces resource configuration even, repeatability and but the problem such as interchangeability, accordingly, method of traditional design of course of division of labor of seesaw pattern craft cannot satisfy business alliance to need to what craft division of labor plans at all, must use intelligence to change design method, with be being used effectively already some knowledge and experience, raise automation rate, cast off the dependence to technologist. To the design of logistic craft course, can use on the principle edit type and make type two kinds of methods. Alleged creating type method is information of technology of basis spare parts and diagnostic information, choose to create unit logically above all, have sort according to certain regulation next, make logistic craft line. Difficulty of technology of this kind of method is great, generated kill also relies on the regular integrality in the knowledge base and validity. In actual production, production unit presses spare parts a group of things with common features commonly or its model classification of characteristics is built, analyse its easily to make unit composition logically, so, the author thinks, use those who be based on typical craft course to edit type method not only more reasonable and feasible, and come true easily. Its fundamental is: According to information of spare parts technology and diagnostic information, retrieve accordingly the course of typical and logistic craft of spare parts a group of things with common features is hand-in-hand edit all right, complete the design of logistic craft course of a new part. However, retrieving effectively of typical craft quickly is to restrict the critical factor with practical system all the time. What should improve a system is practical, want to accomplish the spare parts message that reduces loaded down with trivial details to input a quantity already, should assure to have enough news again with benefit at the system automatic and decision-making. Edit type computer assists craft to design (Computer Aided Process Planning, CAPP) system is based on group technique, need inputs a large number of information to describe spare parts feature, have code, be in spare parts a group of things with common features in order to search. The integrated craft that searchs as a result of it is detailed craft, need much spare parts information, too cross loaded down with trivial details, the user does not wish to use normally. But to craft division of labor plans, course of so called typical and logistic craft is course of a thick craft, need only a few the part is main diagnostic information, namely model of spare parts information is simple. With respect to this character, edit type method more agree with the design of thick craft course of level of program of craft division of labor. This literary grace shows knowledge with generation type regulation, the intelligence that realizes course of typical and logistic craft influences a choice. Refer to document about regular expression and inferential method [3] . Of course of 5 executable craft generate reach optimizing executable craft course is the craft course related to specific production resource, the specific physics that design of executable craft course chooses to be able to realize logic to create demand of unit process capability namely actually creates unit. Because logistic craft course is the orderly rally that creates unit logically, and the orderly gather that executable craft course is physical production unit, create the concern between unit according to making unit and physics logically, pass map to be able to make executable craft line. Alleged map, make unit CLMi(i=1 to comprising the either logic of logic craft course namely, 2, ... , n) , an all physics that can realize CLMi are searched to create unit in production resource library, the is CLMi physics that say makes unit subclass, write down the I that it is G. By N physics makes unit subclass (G1, g2, ... , gn) can set line of many executable craft. Because the production resource of business alliance is had,repeatability is mixed but interchangeability, the likelihood is put in many physics to make unit have a logic to create the process capability that unit place describes, can match by course of a logistic craft accordingly give line of many executable craft. Logistic craft course still contains the information such as handling time, cost, quality and requirement of special device tool, they can regard the tie when map as the condition. Logistic craft course - the main process of map of executable craft course is shown 2 times like the graph. To either CLMi(i=1, 2, ... , n) , above all, the accessary requirement that searchs a contented CLMi in the equipment library of production resource library and tool library (special device and special tool) physics makes unit collect CPM1 and CPM2; Next, an all physics that can realize CLMi are searched to make unit collect CPM3 in making unit warehouse; Finally, to CPM1, CPM2 and CPM3 are begged hand in, get can realizing the gather Gi(i=1 of CLMi, 2, ... , n) . The purpose that craft division of labor plans is implementation production resource is reasonable use, need Gi(i=1 of course of many to generation executable craft, 2, ... , n) undertakes actorring or actress choosing, configure circumstance, physics to make the dynamic news such as unit moving condition and bear condition according to production resource namely, and the other condition of allied enterprise is spent like company reputation, situation undertake optimizing, be in in order to single out the executable craft course that optimizes below tie condition surely. What include through optimizing the executable craft course of generation is physical production unit, the enterprise that is in through its are being searched in production resource library / the workshop adds executable craft line, get line of craft division of labor. 6 construction of system and functional author join project of national 863/CIMS theme, the system of program of division of labor of network product craft that used afore-mentioned methods to develop to be based on dynamic production resource, construction of system is shown 3 times like the graph. This system basically divides the work by management of product part information, craft railway management, production resource management, technology knowledge management and system are compositive 5 functions module comprises interface. Module of management of product part information basically handles detailed account of stock of order information, product (Bill Of Material, BOM) information and spare parts information; Module of management of railway of craft division of labor basically finishs course of design of logistic craft course, executable craft to generate reach its are optimized and course of craft division of labor is generated wait for the task; Production resource manages what module includes to make resource warehouse to build with management, basically include enterprise, workshop, physics to make the news such as unit, logistic production unit and machine tool equipment; Module of technology knowledge management includes definition of model of spare parts information, physics to create unit model definition, logistic production unit of definition of structure of route of model definition, typical logistic craft and technology knowledge base build and management; Compositive interface basically implements the system be based on can expand sign language (EXtensible Markup Language, the two-way changeover of the data file of XML) . 7 last words plan automatically to solve the product craft of dynamic alliance to divide the work problem, the article put forward a kind to create unit through logic - physics makes unit map make executable craft line, repass resource is evaluated and optimize configuration and create the new method of course of craft division of labor. This method avoided to must consider the complex natural resources with huge amount to configure the case that this handles hard when craft course is designed, simplified process of program of craft division of labor, and implement the automation of process of program of craft division of labor easily. CNC Milling