CN102411333B - Fast numerical control machining process system for complex parts of airplane - Google Patents
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Abstract
The invention discloses a fast numerical control machining process system for complex structures of an airplane. The system comprises a database establishment and maintenance subsystem and a numerical control process generation subsystem, wherein the database establishment and maintenance subsystem is used for setting typical characteristic numerical control programming strategy combinations and parameters for the complex structures of the airplane and matching a relationship between the strategy combinations and the parameters; and the numerical control process generation subsystem is used for automatically finishing numerical control programming of the typical characteristics by scheduling database resources. Aiming at the complex structures of the airplane, process information modeling, process template modeling, sorting coding and database establishing are realized, a machining characteristic recognition technology is combined, an internal relation among machining characteristics, process templates and machining processes is established, process manufacturing resources are tightly connected and automatically selected to form an airplane structures manufacturing process knowledge hierarchy and an expert knowledge base based on a three-dimensional model, the machining characteristics are sorted, the machining knowledge is fused, and numerical control machining process documents are automatically and rapidly programmed.
Description
Technical field
What the present invention relates to is the system in a kind of Computer Applied Technology field, specifically a kind of fast numerical control machining process system for complex parts of airplane.
Background technology
High Efficiency NC Machining Technology is the development trend in digital control processing field, is the new technology of quietly rising after high-speed cutting, High-speed machining.This technology takes full advantage of the hardware condition of numerically-controlled machine self, merges various advanced numerical control technologies and management philosophy, realizes the summation of the Numeric Control Technology of production maximizing efficiency under the prerequisite that guarantees product quality.Its essence is to improve technological preparation efficient and numerically-controlled machine comprehensive utilization ratio, realizes the organic unity of product processing quality and product output efficient.In the numerical control programming of aircraft complex structural member, it is longer that early stage, the technique journey was compiled the preparatory period, and individual skill level and experience that Programming's quality depends on the programming personnel are carried out numerical control programming.In programming process, the selection of the choosing of machining feature, job operation has larger randomness, can't carry out effective standard, more can't carry out precision management and optimization, so not only lost time but also can not obtain optimized result.Therefore, the quick NC Programming System of the aircraft complex structural member important in inhibiting in computer-aided manufacturing is used based on High Efficiency NC Machining Technology has higher using value and development potentiality.
The technical bottleneck that affect at present aircraft complex structural member efficiency of numerical control (NC) machining changes numerical control technique journey volume inefficiency into gradually from numerical control device scarce capacity before.The digital control processing of structural member is typical short run, multi-assortment production, in existing Technology of NC Programming, different structure spare is distributed to different programming personnels, cause same or analogous structure processing mode difference in different structure spare, there are following problems in this processing mode:
1, cutter path planning needs a large amount of manual interventions and checking repeatedly usually.
2, existing resource can't in time be shared, and programming efficiency is low.
3, can't standardize programming and good processing mode is passed on down etc.
Extensively adopted integral structure component due to the demand on performance in the airplane design manufacture process, have that physical dimension is large, theoretical complex contour, capacity of equipment require high, longly need to carry out technical renovation to technique journey volume technology so cause aircraft complex structural member numerical control technique journey to compile the preparatory period, improve efficient and quality that the technique journey is compiled.
The aircraft structure size increases gradually, design of part is increasingly sophisticated, geometric accuracy improves constantly, and also gradually from the situation of laying equal stress on as aluminium alloy and titanium alloy take aluminium alloy as main transformer in past, its difficulty of processing, technique journey compile workload and the quality control difficulty significantly increases for the material of employing.
Process programming based on feature, integrated degree is high, technique, journey volume, postposition, control system, lathe, emulation effectively are unified under the CAD/CAM/PDM integrated platform, integrated level is high, technological preparation efficient is high, and design, manufacturing resource and process resource form unified basic database, use single data source, automaticity is high, and it is succinctly effective that the technique journey is compiled flow process.The present invention is directed to low this outstanding problem of aviation field aircraft complex structural member (wallboard class, frame class, beam class, rib class) programming efficiency, proposition is based on the aircraft complex structural member fast programming technology of feature, help to improve programming efficiency, form machining prgraming database and technological specification.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of fast numerical control machining process system for complex parts of airplane is provided, digital control processing for the vital parts such as aircraft complex structural member wallboard class, frame class, beam class, rib class in aviation field, the programming platform of exploitation complex curved surface parts multi-axis numerical control processing forms machining prgraming database and technological specification.
The present invention is achieved by the following technical solutions, and fast numerical control machining process system for complex parts of airplane of the present invention comprises that Database and maintenance subsystem and numerical control technique generate subsystem.Wherein:
Database and maintenance subsystem are completed the combination of aircraft complex structural member characteristic feature NC programming strategies and setting parameter, and the coupling of strategy combination and parameter Relations Among, namely determine to complete the geometric parameter that the feature numerical control programming needs, complete the establishment of knowledge templet; Complete the numerical control programming of feature by NC programming strategies combination and parameter mode, system can be automatically strategy combination and parameter mode input database in operation; Processing Strategies and geometric parameter are mated, and the NC template establishment software that provides by system is preserved geometric parameter and Processing Strategies combination and parameter, forms the NC template of this feature, and is saved in database;
Numerical control technique generates subsystem by the calling data base resource, automatically completes the numerical control programming of characteristic feature.
It is that numerical control processing technology generates the prerequisite that subsystem rapidly and efficiently moves that described property data base is set up with maintenance subsystem, mainly comprises with lower module:
Technological preparation module: comprise characterizing definition unit and technology establishment unit.Wherein, the characterizing definition unit frequency of utilization is high, use general partial structurtes and be defined as feature.The technology establishment unit is in conjunction with existing processing experience and method, determine optimized numerical control process program, comprise NC programming strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter, cutting data parameter.
Property data base is set up module: comprise knowledge templet creating unit, technological parameter typing unit and NC template establishment unit.Wherein, the knowledge templet creating unit is for determining the numerical control technique input and output geometric parameter relevant with geometric parameter.Technological parameter typing unit is for completing the numerical control programming of feature by the numerical control process program of determining, native system can be automatically the strategy combination in operation and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter input database.NC template establishment unit is for to mate Processing Strategies and geometric parameter, and Processing Strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are preserved, form the NC template of this feature.The NC template of this feature is added in Database Folder, can complete the property data base of this feature numerical control technique and set up.
Property data base maintenance module: comprise process optimization unit and database expansion unit.Wherein, modify to corresponding NC template in database in the process optimization unit.The database expansion unit is added in database for making New Characteristics NC template, makes property data base be expanded.
Described numerical control technique generates the numerical control technique that subsystem can be realized the aircraft complex component characteristic feature fast, comprises that feature identification module, technique sets up module, check correction module, wherein:
The feature identification module: by choosing geometric parameter, system can carry out part to be processed on the backstage feature identification and sign, provides the machining feature of having identified mark for follow-up Processing Strategies intelligence creates.In this process, system can help the user to complete the operation of this module in the mode of 3-D display geometric parameter to be chosen.
Technique is set up module: in numerical control processing technology formulation pattern, system is according to the feature numerical control process data description in the machining feature sign of demarcating, automatically read the NC template of character pair in property data base, call the combination of related development module creation Processing Strategies, cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are set, final formation with the complete corresponding Processing Strategies combination of the machining feature of demarcating creates, and the numerical control processing technology of completing this feature generates.
Check correction module: by interactive operation, check that whether the feature numerical control processing technology strategy that creates satisfies the programming requirement, carries out perfect to the process detail setting that system can not realize automatically.
Comprise the combination of characteristic feature NC programming strategies and parameter in described property data base, and the matching relationship between strategy combination and parameter.After property data base is set up and is completed with maintenance subsystem foundation, in the numerical control processing technology of reality generates, only need to call numerical control processing technology generation subsystem and can complete actual numerical control processing technology generation, make the repetition numerical control processing technology generation of characteristic feature become simple efficient, and the convenient technological specification of formulating.
The combination of described NC programming strategies comprises following strategy: slabbing, pocketing, Profile milling, Curve Machining, Drilling operation, level line roughing, projection roughing, insert mill roughing, projection processing, clean-up machining, level line processing, profile drive processing, along face processing, spiral processing.
the present invention is directed to the design feature of aircraft complex structural member part, on the basis of existing technique experience accumulation, carry out industrial analysis, realize the technique information modeling, the modeling of technique template, sorting code number, build the storehouse, in conjunction with the machining features recognition technology, build machining feature, inner link between technique template and processing technology, and carry out closely being connected and automatically choosing with manufacturing resource of process, formation is based on aircraft structure manufacturing process knowledge hierarchy and the expert knowledge library of three-dimensional model, finally complete the sequence of machining feature, automatically the establishment fast of the fusion of processing knowledge and numerical control processing technology document.System of the present invention completes the numerical control programming of characteristic feature automatically by calling the characteristic base resource, has the characteristics of efficient, convenient, accurate and standard.
Description of drawings
Fig. 1 is that in the embodiment of the present invention, property data base is set up and the maintenance subsystem structured flowchart.
Fig. 2 is that in the embodiment of the present invention, numerical control processing technology generates the subsystem structure block diagram.
Fig. 3 is aircraft complex structural member rib class part schematic diagram in the embodiment of the present invention.
Embodiment
The below elaborates to embodiments of the invention, and the present embodiment is implemented as prerequisite take technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
This enforcement is generated as example with the quick numerical control processing technology of aircraft complex structural member rib class part (as shown in Figure 3).
The present embodiment comprises that property data base is set up and maintenance subsystem (as shown in Figure 1) and numerical control processing technology generation subsystem (as shown in Figure 2).Wherein, Database and maintenance subsystem are completed the combination of aircraft complex structural member characteristic feature NC programming strategies and setting parameter, and the coupling of strategy combination and parameter Relations Among.Numerical control technique generates subsystem by the calling data base resource, automatically completes the numerical control programming of characteristic feature.
As shown in Figure 1, described property data base is set up with maintenance subsystem and is comprised that technological preparation module, property data base set up module, property data base maintenance module, wherein:
Technological preparation module: comprise characterizing definition unit and technology establishment unit.Wherein, the characterizing definition unit some frequencies of utilization are high, use general partial structurtes and be defined as feature.The technology establishment unit is in conjunction with existing processing experience and method, determine optimized numerical control process program, comprise NC programming strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter, cutting data parameter.
Property data base is set up module: comprise knowledge templet creating unit, technological parameter typing unit and NC template establishment unit.Wherein, the knowledge templet creating unit is for determining the numerical control technique input and output geometric parameter relevant with geometric parameter.Technological parameter typing unit is for completing the numerical control programming of feature by the numerical control process program of determining, native system can be automatically the strategy combination in operation and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter input database.NC template establishment unit is for to mate Processing Strategies and geometric parameter, and Processing Strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are preserved, form the NC template of this feature.The NC template of this feature is added in Database Folder, can complete the property data base of this feature numerical control technique and set up.
Property data base maintenance module: comprise process optimization unit and database expansion unit.Wherein, the deficiency in the NC template is found for to use by reality in the process optimization unit, and corresponding NC template in database is modified.The database expansion unit is added in database for making New Characteristics NC template, makes property data base be expanded.
As shown in Figure 2, described numerical control processing technology generates subsystem and comprises that feature identification module, technique sets up module, check correction module:
The feature identification module: by choosing geometric parameter, system can carry out part to be processed on the backstage feature identification and sign, provides the machining feature of having identified mark for follow-up Processing Strategies intelligence creates.In this process, system can help the user to complete the operation of this module in the mode of 3-D display geometric parameter to be chosen.
Technique is set up module: in numerical control processing technology formulation pattern, system is according to the feature numerical control process data description in the machining feature sign of demarcating, automatically read the NC template of character pair in property data base, call the combination of related development module creation Processing Strategies, cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are set, final formation with the complete corresponding Processing Strategies combination of the machining feature of demarcating creates, and the numerical control processing technology of completing this feature generates.
Check correction module: by interactive operation, check that whether the feature numerical control processing technology strategy that creates satisfies the programming requirement, carries out perfect to the process detail setting that system can not realize automatically.
The present embodiment carries out work in the following manner.
The foundation of property data base: at first, according to the existing processing experience of aircraft complex structural member rib class part and method, some frequencies of utilization are high, the general partial structurtes of application are defined as characteristic feature, determine optimized numerical control processing technology scheme, comprise NC programming strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter, cutting data parameter.Then, determine according to the numerical control processing technology scheme input and output geometric parameter that numerical control technique is relevant with geometric parameter, complete the numerical control processing technology programming of characteristic feature by set numerical control processing technology scheme, and Processing Strategies and geometric parameter are mated, Processing Strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are preserved, form the NC template of this characteristic feature.The NC template of this feature is added in Database Folder, namely complete the property data base of this feature numerical control technique and set up.At last, in actual the use, can and modify to the input error in the NC template.
After property data base is set up and completed, only need to call property data base and can complete actual numerical control processing technology generation, make the repetition numerical control processing technology generation of characteristic feature become simple efficient, and convenient formulation technological specification.
The generation of numerical control processing technology: at first, by choosing geometric parameter, system can carry out part to be processed on the backstage feature identification and sign, provides the machining feature of having identified mark for follow-up Processing Strategies intelligence creates.Then, the user enters numerical control processing technology and formulates pattern, technique in operational system is set up module, system is according to the feature numerical control process data description in the machining feature sign of demarcating, automatically read the NC template of character pair in property data base, call the combination of related development module creation Processing Strategies, cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are set, form and the complete corresponding Processing Strategies combination of the machining feature of demarcating establishment, the numerical control processing technology of completing this feature generates.At last, by interactive operation, check that whether the feature numerical control processing technology strategy that creates satisfies the programming requirement, carries out perfect to the process detail setting that system can not realize automatically.
Comprise the combination of characteristic feature NC programming strategies and parameter in described property data base, and the matching relationship between strategy combination and parameter.System completes the numerical control programming of characteristic feature automatically by calling the characteristic base resource.
The combination of described NC programming strategies comprises following strategy: slabbing, pocketing, Profile milling, Curve Machining, Drilling operation, level line roughing, projection roughing, insert mill roughing, projection processing, clean-up machining, level line processing, profile drive processing, along face processing, spiral processing.
The present embodiment is take the quick numerical control processing technology of aircraft complex structural member rib class part as example, illustrated that fast numerical control machining process system for complex parts of airplane can generate numerical control processing technology fast at the aircraft complex structural member, has the characteristics of efficient, convenient, accurate and standard.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
1. a fast numerical control machining process system for complex parts of airplane, is characterized in that comprising that Database and maintenance subsystem and numerical control technique generate subsystem, wherein:
Database and maintenance subsystem are completed the combination of aircraft complex structural member characteristic feature NC programming strategies and setting parameter, and the coupling of strategy combination and parameter Relations Among, namely determine to complete the geometric parameter that the feature numerical control programming needs, complete the establishment of knowledge templet; Complete the numerical control programming of feature by NC programming strategies combination and parameter mode, system can be automatically strategy combination and parameter mode input database in operation; Processing Strategies and geometric parameter are mated, and the NC template establishment software that provides by system is preserved geometric parameter and Processing Strategies combination and parameter, forms the NC template of this feature, and is saved in database;
Numerical control technique generates subsystem by the calling data base resource, automatically completes the numerical control programming of characteristic feature;
Described property data base is set up with maintenance subsystem and is comprised with lower module, wherein:
The technological preparation module: comprise characterizing definition unit and technology establishment unit, wherein, the characterizing definition unit is high with frequency of utilization, use general partial structurtes is defined as feature; The technology establishment unit is in conjunction with existing processing experience and method, determine optimized numerical control process program, comprise NC programming strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter, cutting data parameter;
Property data base is set up module: comprise knowledge templet creating unit, technological parameter typing unit and NC template establishment unit, wherein, the knowledge templet creating unit is for determining the numerical control technique input and output geometric parameter relevant with geometric parameter; Technological parameter typing unit is for completing the numerical control programming of feature by the numerical control process program of determining, native system can be automatically the strategy combination in operation and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter input database; NC template establishment unit is for to mate Processing Strategies and geometric parameter, and Processing Strategies combination and cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are preserved, form the NC template of this feature, the NC template of this feature is added in Database Folder, namely complete the property data base of this feature numerical control technique and set up;
Property data base maintenance module: comprise process optimization unit and database expansion unit, wherein, modify to corresponding NC template in database in the process optimization unit, the database expansion unit is added in database for making New Characteristics NC template, makes property data base be expanded.
2. fast numerical control machining process system for complex parts of airplane according to claim 1 is characterized in that: described numerical control technique generates subsystem and comprises that feature identification module, technique sets up module, check correction module, wherein:
Feature identification module: by choosing geometric parameter, system can carry out part to be processed on the backstage feature identification and sign, for creating, follow-up Processing Strategies intelligence provides the machining feature of having identified mark, in this process, system can help the user to complete the operation of this module in the mode of 3-D display geometric parameter to be chosen;
Technique is set up module: in numerical control processing technology formulation pattern, system is according to the feature numerical control process data description in the machining feature sign of demarcating, automatically read the NC template of character pair in property data base, call the combination of related development module creation Processing Strategies, cutter parameters, geometric parameter, cutter path parameter, speed of feed parameter, advance and retreat cutter parameter and cutting data parameter are set, final formation with the complete corresponding Processing Strategies combination of the machining feature of demarcating creates, and the numerical control processing technology of completing this feature generates;
Check correction module: by interactive operation, check that whether the feature numerical control processing technology strategy that creates satisfies the programming requirement, carries out perfect to the process detail setting that system can not realize automatically.
3. fast numerical control machining process system for complex parts of airplane according to claim 2, it is characterized in that: comprise the combination of characteristic feature NC programming strategies and parameter in described property data base, and the matching relationship between strategy combination and parameter, after property data base is set up and is completed with maintenance subsystem foundation, in the numerical control processing technology of reality generates, only need to call numerical control processing technology generation subsystem and can complete actual numerical control processing technology generation.
4. fast numerical control machining process system for complex parts of airplane according to claim 3 is characterized in that: described NC programming strategies combination comprises following strategy: slabbing, pocketing, Profile milling, Curve Machining, Drilling operation, level line roughing, projection roughing, insert mill roughing, projection processing, clean-up machining, level line processing, profile drive processing, along face processing, spiral processing.
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| CN103235556B (en) * | 2013-03-27 | 2015-08-19 | 南京航空航天大学 | The complex parts digital control processing manufacture method of feature based |
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| CN115629573B (en) * | 2022-12-21 | 2023-03-17 | 中科航迈数控软件(深圳)有限公司 | Automatic programming method and device for machining program, terminal device and storage medium |
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| CN101493683A (en) * | 2009-01-09 | 2009-07-29 | 成都飞机工业（集团）有限责任公司 | Method for implementing numerical control finish machining for large component of aeroplane based on digitalization error compensation template |
| CN101763064B (en) * | 2009-12-08 | 2012-04-18 | 沈阳飞机工业（集团）有限公司 | Numerical control machining process design system and method of aircraft complex components facing process object |
| CN101763067B (en) * | 2009-12-15 | 2011-08-31 | 沈阳飞机工业（集团）有限公司 | Quick generation method of numerical control machining scheme of complex parts of airplane |
| CN101763068B (en) * | 2009-12-15 | 2011-11-09 | 沈阳飞机工业（集团）有限公司 | Preparation system of quick numerical control machining of complex parts of airplane and method |
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