Modular machine tool assembles the research of the model

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The article analysed the summary the current situation of system of CAD of modular machine tool, from plan of modular machine tool design characteristic sets out, raised specific requirement to CAD system, used object-oriented technology to define modular machine tool to assemble a model, discussed the structural frame of system of CAD of plan of modular machine tool. Keyword: Design of plan of modular machine tool is object-oriented assemble a model the technology of CAD of 　 of current situation analysis of system of CAD of 1 modular machine tool starts from 2 dimension plot, inside 229 short years, the diagnostic modelling that experienced modelling of three-dimensional line draw a frame round, curved surface, hypostatic modelling and nowadays to be used extensively a few phase, obtained the positive result of plentiful and substantial. However, around the detailed design of the spare parts development rises these technologies. What compete as the market is increasingly intense, taller and taller to the requirement of products plan automation, besides plot of the detailed design of the product, project, still must support the inchoate design process such as the plan design of the product, initial design. Compare with the detailed design photograph of the product, CAD technology in the product the application of inchoate design phase is returned very fragile, its are main the information abstraction administrative levels that the reason is this phase is higher, not easy formalization, be handled by the computer hard. Plan devises the first step that is design of modular machine tool, it is component design and create constructional main base. The actor bad that plan designs affects the design quality of the machine tool and manufacturing cost directly. In recent years, people did many works in respect of CAD of modular machine tool, rolled out system of CAD of many modular machine tool in succession [1] ～ [3] . The face city of these systems, implemented the partial automation that modular machine tool designs, the technology that promoted trade of modular machine tool progresses. However, these systems all fail to solve plan of modular machine tool to design an issue well, like document [1] [2] offerred library of graph of a general part of relatively complete modular machine tool, standard component and interactive interface to the user, have the aid of at this system but conveniently the 3 pictures that design of plan of scale modular machine tool wants a calorie, but cannot support plan to design a process, according to its the function can be system of mapping of a modular machine tool only; Document [3] can support plan to design a process, the user can complete the plan design of modular machine tool according to systematic navigation, can generate output plan automatically to design a result (namely 3 graphs a calorie of) , but this system is to be based on a tradition to design a model, rely on place of structured programming method to build, expand and safeguard what limitted systematic function, cannot offer patulous port to the user, get used to the design with current increasingly changeful modular machine tool to ask hard. 2 plan design the design of plan of requirement modular machine tool of pair of CAD systems to belong to the notional design phase with inchoate product, the information kind that involves in place of this design phase is much, the treatment technology that incorporates a machine tool, choose the many sided information such as clamping apparatus of cutting tool, configuration, oriented type, machine tool. All these information abstraction administrative levels are high, because return concept of particular without the machine tool bodily form right now, without the standards figure of component, only is the functional requirement that place of this machine tool needs to finish only. The machine tool structure that plan of modular machine tool is designed even if from functional requirement place setting out has one kind is choice of configuration, cutting tool, affirmatory prop up direct and the design process of clamping apparatus form. For this, system of its requirement CAD besides the detailed design function that has routine, still must have: Support the design process of product from above to below. Above all from the machine tool total construction sets out, design the functional requirement of the machine tool according to place, determine the basic configuration of the machine tool and composition, the assembly between affirmatory component concerns, build model of machine tool concept. Can undertake decomposing to designing a model. The basis is overall assemble relation and tie, form the concrete tie condition that designs to component, support is right downstream design, make and assemble the demand that waits for collateral job. Facilitating system function is patulous, in order to get used to the need with increasingly changeful modular machine tool. Satisfy afore-mentioned keys that design a requirement, depend on building to be able to describe product function, assemble what relation, parameter restrains to assemble a model, and this kind of model moves a mechanism mediumly in products plan process. 3 modular machine tool assemble the descriptive product of the model to assemble a model is a kind of data structure that describes whole product information, it can mirror the functional requirement of the product, structure to assemble the information of each respect such as relation and parameter tie, can support products plan not only, the production that still can support a product, assemble those who wait for sequel all sorts of production segment. 3.

Analysis of functional requirement of 1 modular machine tool and the function of modular machine tool that describe a design basically are mirrorred on the treatment craft that it finishs, consequently, the functional requirement of modular machine tool can have a description through processing craft information. The treatment craft information of modular machine tool includes to machine requirement of type of technology area, craft, precision, and the geometrical form that the element processes individually in machining technology area each and positional information. The treatment technology area that says here is not the geometrical surface that indicates normally, point to geometry however apparently finishs craft content, surfaces of such a geometry may have milling, auger cut, attack whorl to wait for area of many treatment technology. Area of technology of this kind of treatment can machine unit mediumly to establish one to one correspondence relationship with machine tool structure, if milling machines technology area, Kong Jia project technology area, attack whorl technology area to wait. Function of modular machine tool besides the craft content that needs to finish, still include the auxiliary function such as the outfit clip of workpiece, illume, refrigeration, they also build the auxiliary plant of the clamping apparatus with modular machine tool and other one to one correspondence relationship. 3.

2 assembling a relation to describe mechanical product is the system that forms by the component place that has administrative levels concern. A component can disclose a certain number of parts or child component, child the component still can be decomposed again a certain number of more lower spare parts and child component. Expression is assembling order to go up, assemble a part by the spare parts first namely, participate in overall assembly next. The assembly of sex of this kind of administrative levels concerns if the graph is shown 1 times,can use assemble a tree to undertake expression. By the graph 1 visible, a modular machine tool but by a certain number of treatment unit and electric, hydraulic pressure, clamping apparatus advocate complementary component composition, each treatment unit can be divided again wait for a component for wing base, slip, headstock. Represent even the line in assembling a relation to cultivate male relative of a senior generation node and child the subordinating relation between node, and the specific description that node expresses to machine unit or component individually. Graph 1 modular machine tool assembles a tree 3.

The parameter between the descriptive component that tie of the parameter between 3 component concerns restrains a relation to be able to mirror in two respects: It is component firstly mutual position restrains a relation, it is component secondly between but form a complete set restrains a relation. The description that restrains a relation to the position between component needs to decide above all fiducial, this are fiducial should be with other part part produces a part with maximum relation or part. With this fiducial for core, the position that describes other component respectively affects, can build this product the position restrains relation model between each component. Overall to modular machine tool and character, each treatment unit are decorated at center base or workbench relatively, can serve as center base consequently fiducial will handle; And to each treatment unit, OK wing base or pillar base serve as fiducial will describe this treatment inside unit the position restrains a relation between each component. Rate of standardization of modular machine tool, seriation is higher, in standard of design of modular machine tool, offerred the list of relation of form a complete set that the alternative can offer between general component each. Use watch of relation of this form a complete set to regard the sex of form a complete set of modular machine tool as the tie, what want the navigation standard of component as right choice with it. 3.

The technology with the object-oriented definition that 4 object-oriented modular machine tool assemble a model is a kind of when be analysed with the computer and solve a problem new method, it is had enclose, accede to wait for character with burden, the description that assembles a model for the product and definition offerred a new thinking. Object-oriented technology will have identical structure, identical operation, the target that follows same tie regulation forms kind, in same each kind of medium objects have same property. Consequently, can be definition of modular machine tool kind, and each when design particular machine tool is a this kinds object. This kind of modular machine tool kind be complex kind, it is formed by all sorts of different attribute place. Every kinds of attribute includes different subclass again, subclass has subclass again, the arrangement that forms one sort concerns. It is below with kind the modular machine tool of the definition assembles a model, the property that includes as follows in the model assembles in this: Modular machine tool kind ｛ 　 manages property: Specification of bugle call of machine tool name, plan, architect, design, date; Workpiece attribute: Character of work name, material, material, fixed position is standard, CGS file finger; Functional attribute: Treatment technology area kind type of label of 　 of 　 of 　 of 　 of 　 of 　 of ｛ 　 　 , azimuth, craft, machine aperture kind the ｝ such as parameter of type of label of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of ｛ 　 　 , coordinate, aperture, appearance; Clip of outfit of 　 of 　 of 　 of 　 of ｝ 　 　 , cooling, illume and other assist a function; Craft attribute: Cutting dosage kind; Cutting tool kind; Bearing is oriented kind; Structural attribute: Treatment is unit kind of ｛ label, azimuth, component kind; Assemble relation and positional tie ｝ ; Workbench or center base kind; Clamping apparatus kind; Auxiliary assemble kind; Assemble relation and positional tie; ｝ 　 　 (1) government property: Include specification of bugle call of machine tool name, plan, architect, design to wait; (2) workpiece belongs to: Workpiece is the foundation that modular machine tool designs, also be the basis that produces process chart, besides the character such as work name, material, still should include finger of file of workpiece formative CSG, fixed position fiducial wait for information; (3) function attribute: Like the 3rd.

A place is narrated, here is main in order to machine technology area kind the functional requirement that describes a design machine tool; (4) craft attribute: The bearing that craft attribute includes cutting tool of cutting dosage, cutting and cutting tool is oriented wait for craft content. Craft attribute and functional attribute have some kind of corresponding concern, for example: Element of the each treatment in technology area (for example machines aperture) , dosage of due and corresponding cutting tool, cutting, and bearing is oriented to it corresponding. (5) structure attribute: The configuration that this attribute should mirror a whole machine tool, layout and assemble a tie to concern. To machine tool whole, the bag contains each to machine system of unit, workbench or center base, clamping apparatus, electric hydraulic pressure and other to assist device, and the assembly between them concerns and restrain a relation; And unit to each treatment, have again individually general comprise with special component, these components have the assembly of oneself and tie concern again, every component has a variety of spare parts composition again, formed an assembly that has hierarchy to cultivate thereby. The structural frame that the 4 implementation that are based on the program of modular machine tool that assembles a model to design CAD system are based on the program of modular machine tool that assembles a model to design CAD system is shown 2 times like the graph, its input is workpiece information, the workpiece information that inputs according to place extracts machine tool functional requirement, in order to build the functional model of a design machine tool; Pass inferential analysis, give the notional model of machine tool structure by the functional model derivation of the machine tool, for example: Way of orientation of the configuration form that needs unit of a few treatment, each unit, clamp. Because a kind of function may come true by a variety of structures, same structure also can realize a variety of functions, so they are many pairs of much map impacts. Accordingly, the map relation warehouse that builds functional tie and structural implementation and regular library are the key that achieves this one step. Once built the notional model of the machine tool, can undertake the detailed design of plan. The norms kind that according to the tie in notional model the condition defines to each form a part, and the assembly between each composition component concerns and positional tie concerns, generate what what design modular machine tool to assemble a model stage by stage thereby. The 3 plans that can pursue succeed according to should assembling a model each design such as one card, quote works. Graph frame of system of CAD of design of plan of 2 modular machine tool CNC Milling CNC Machining