CN115310305A - Quality gate of digital model of complex precise parts and application method thereof - Google Patents
Quality gate of digital model of complex precise parts and application method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of precision part design and manufacture, and discloses a quality gate for a digital model of a complex precision part, which comprises the following components in parts by weight: the method comprises the following steps of distributing a release gate, a pre-release quality gate and a formal release quality gate, wherein the pre-release quality gate comprises a standard gate, a first network gate and a first processing gate, and the formal release quality gate comprises a second grid gate, a second processing gate and a delivery gate; detecting the technical state of the design process of the complex part model through the setting of the quality gate of the digital model of the complex precise part; and judging the number and degree of defects in the design process of the model according to whether the parts can pass the detection of each gate, further expressing the process quality of the model, and measuring the mature process of the complex parts from the comprehensive balance with controllable cost and feasible technology based on the digital model. The invention also comprises an application method of the digital model quality gate of the complex precise parts.
Description
Technical Field
The invention relates to the technical field of precision part manufacturing, in particular to a digital model quality gate for complex precision parts and an application method thereof.
Background
Defects of the aviation complex part in the aspects of fine curves/line segments, self-intersecting curved surfaces, repeated curved surfaces, twisted curved surfaces and fine edges are closely related to digital twin evaluation, finite element analysis and numerical control programming in the design stage, and the quality of geometric elements of a twin model seriously influences the aerodynamic performance, the body strength, the fatigue life, the processing quality and the assembly butt joint of the product.
Modern modeling has a large number of geometric elements and engineers spend a large amount of time repairing defects. If the digital-analog quality problem is not discovered and solved in time in the process, the subsequent work becomes more and more complex, and some complex parts even need to be modeled again. Therefore, before the wrong geometric features and elements of the complex part cause more additional quality defects, the key important deficiency of the quality of the digital twin model of the complex part needs to be detected with high efficiency. Firstly, the method aims to solve the problems that detection gateways are arranged in a classified mode, secondly, the total detection amount is greatly reduced, and finally, parameter thresholds corresponding to important item defects in the total amount need to be accurately screened out, so that the comprehensive balance of engineering period, development cost and technology maturity is achieved.
At present, the quality detection of digital models is widely used in the research of domestic and foreign aviation products, and the conventional quality detection method of digital models is as follows:
1) The designer can choose to make decisions based on his or her own expertise (e.g.: aerodynamic shape, aircraft airframe structure) employs geometric model quality inspection tools (e.g.: Q-Checker, Q-Doctor) to identify and evaluate model quality defects.
2) The method adopts a product life cycle management (PLM: product Lifecycle Management) or Product Data Management (PDM) system, and generates a part quality defect report, and an engineer evaluates the model quality according to the report.
3) The output gate and the input gate of the quality of the geometric model are established inside the original equipment supplier, and the checking items and parameters are customized in the model detection system in advance.
The disadvantages of the current method are that:
1) Because the number of the digital twin geometric models is huge, if the door is not closed, the defects are generated quickly and much, and the design is seriously influenced; if the quality gate which is difficult to adjust is set, a large amount of time is needed to modify the model, and the model can pass the detection, so that the quality gate which is difficult to adjust is inconsistent with the actual practice due to the requirements of cost and progress in the actual practice, and is difficult to popularize.
2) The quality of the model is not brought into the direct examination range of the technical state, so that the problems caused by the quality defects of the model are not directly shown in the examination and check table of the technical state in the design process, and due to frequent reworking of the model caused by the quality problems of the model, the quality problems of the model are difficult to perform milestone examination.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a quality gate of a digital model of complex and precise parts and an application method thereof.
(II) technical scheme
The invention provides the following technical scheme:
a complex precision parts digital model mass gating, said complex precision parts digital model mass gating comprising: the layout issuing gate, the pre-issuing quality gate and the formal issuing quality gate.
An application method of a quality gate of a digital model of a complex precise part uses the quality gate of the digital model of the complex precise part, and comprises the following steps:
s1, establishing a basic model:
establishing a basic model according to a preset standard, a parameter and a design template of an identifier in an enterprise;
s2, proofing layout design:
building a design ontology model by using a framework positioning model and a space distribution model on the basis of a basic model;
s3, detecting quality technical states of the proofing layout model:
calling a layout release gate to respectively check the design body model established in the step S2;
when the design body model fails to pass the check of the layout release gate, returning the failed model to the step S2 for re-proofing layout design;
when the design ontology model passes the inspection of the layout release gate, continuing to execute the next step;
s4, professional collaborative design:
establishing a derived grid model for simulation and a derived processing model for manufacturing on the basis of a design body model for issuing gate-closing inspection through layout;
s5, detecting the quality and technical state of the pre-issued model:
calling a pre-issued quality gate to respectively check the derived grid model for simulation and the derived machining model for manufacturing in the step S4;
when any one of the derived grid model for simulation and the derived machining model for manufacturing fails to pass the inspection of the pre-issued quality gate, returning the failed model to the step S4 for re-professional collaborative design;
when all the derived grid models for simulation and the derived machining models for manufacturing pass the inspection of the pre-issued quality gate, continuing to execute the next step;
s6, checking the professional model;
on the basis of calling a derivative grid model for simulation and a derivative machining model for manufacturing, which are issued in advance for quality gate inspection;
establishing a derived operation model to be frozen by using a design ontology model;
establishing a derivative grid model for freezing preparation by using the derivative grid model for simulation;
establishing a pre-frozen derivative machining model by using a derivative machining model facing the manufacturing;
s7, checking the quality technical state of the formal freezing model:
calling a formal issuing quality gate to respectively check the pre-frozen derived grid model and the pre-frozen derived machining model established in the step S6 and check the design body model which is ready for delivery;
when any one of the pre-frozen derived grid model, the pre-frozen derived machining model and the pre-delivered design ontology model fails to pass the checking of the official release quality gate, returning the failed model to the step S6 for re-professional collaborative design;
when the pre-frozen derived grid model, the pre-frozen derived machining model and the pre-delivered design body model all pass the checking of the official release quality gate, continuously executing the next step;
s8, model delivery:
formally freezing the derivative operation model to be frozen, the derivative processing model to be frozen and the derivative operation model to be frozen which pass the formally-issued quality gate inspection, and sequentially generating a delivery operation model, a delivery processing model and a delivery grid model;
delivering the delivery operation model for the maintenance and the maintenance of the later operation of the parts;
delivering the delivery processing model for trial production of test pieces and formal batch production;
and delivering the delivery grid model for simulating and testing the overall performance of the part.
Preferably, in the step S5, the pre-issued quality gates include a first grid gate, a first machining gate and a standard gate;
the first grid gate and the standard gate are used for checking a derivative grid model for simulation, and the first machining gate is used for checking a derivative machining model for manufacturing.
Preferably, in the step S5:
when the derived grid model for simulation does not pass the inspection of the first grid gate, returning the derived grid model for simulation to the step S4, and after the derived grid model for simulation is evaluated by strength and pneumatic professionals, repairing the derived grid model together with designers;
when the derived machining model facing the manufacturing does not pass the inspection of the first machining gate, returning the derived machining model facing the manufacturing to the step S4, and repairing the derived machining model facing the manufacturing together with a designer after being evaluated by a process, numerical control machining or pipe bending worker;
and when the derived grid model for simulation does not pass the inspection of the standard gate, returning the derived grid model for simulation to the step S4, evaluating by a subsystem responsible person, and repairing together with a design responsibility engineer.
Preferably, in the step S7, the official issuing quality gate includes a second grid gate and a second machining gate;
the second grid gate is used for checking the derivative grid model which is ready to freeze, and the second processing gate is used for checking the derivative processing model which is ready to freeze.
Preferably, in the step S7:
when the pre-frozen derived grid model does not pass the inspection of the second grid gate, performing detailed analysis, repair and processing on the defect which does not pass the inspection;
when the pre-frozen derived machining model does not pass the inspection of the second machining gate, the defect which does not pass is carefully analyzed, repaired and processed.
Preferably, with the continuous use of the application method, parameter thresholds in the layout issuing gate, the first grid gate, the first machining gate, the normative gate, the second grid gate and the second machining gate can be adjusted;
the layout issuing gate, the first grid gate, the first processing gate, the standard gate, the second grid gate and the second processing gate can also adjust the execution times, the defect identification threshold and the detection flow of each gate according to the difference of precise part digital models, the difference of technical states in the design process and the difference of design cooperation modes.
(III) advantageous effects
Compared with the prior art, the invention provides a quality gate of a digital model of complex and precise parts and an application method thereof, and the quality gate has the following beneficial effects:
1. a quality gate of a complex precise part digital model is characterized in that a product quality control target is decomposed into gates of layout design, collaborative design and collaborative check, the technical state of the complex part design process is detected in a measurable item and parameter threshold rule form through the quality gate of the complex precise part digital model, the product process quality is expressed according to the number and degree of defects detected by the gates, the gate threshold is optimized in the aspect of comprehensive balance of technical economy and engineering reliability, and the purpose of precisely controlling the quality of the complex precise part is achieved.
2. According to the application method of the quality gate of the digital model of the complex precise part, due to the quality of the digital model monitored by the conventional Q-Monitor, defects are found from massive quality detection reports, the interpretation workload is large, the implementation resistance of enterprises which carry out the quality detection of the geometric model is large, and some of the enterprises are wasted in half way; according to the invention, the threshold parameter matrix matched with the enterprise is defined in advance, and the parameter threshold is optimized according to the running records, so that the missing detection or the over-inspection is avoided, and the parameter threshold is gradually improved.
3. According to the application method of the quality gate of the digital model of the complex precise parts, due to the fact that requirements on the quality precision of the geometric model are not completely the same in different stages of development, the quality of the conventional digital twin geometric model is detected, the adjustment is not flexible after detection items are customized, the redeployment is needed, the threshold parameter with high requirements is set at the beginning, the adaptability is weak, the time cost through detection is high, and the use will of a designer is not high or even is resisted; according to different part characteristics of different milestones, the quality detection of the geometric model is integrated into a design process, and the quality detection is transmitted to the next link, so that the corresponding quality requirement is gradually improved, and the quality detection is directly hooked with the technical state of part design. The enterprise self-prepares a threshold parameter matrix, and the quality detection result of the geometric model of each design procedure is filed or transmitted as a design standard, so that key important design steps of the enterprise self-prepares the threshold parameter matrix to meet the requirements of digital twin lightweight, model finite element analysis and visual numerical control programming.
Drawings
FIG. 1 is a schematic diagram of the structure of a complex and precise digital model mass gate of the present invention;
FIG. 2 is a diagram of the relationship between the mass gate and the digital model of the complex precision part according to the present invention;
FIG. 3 is a schematic view of the quality gating inspection process of a digital model of complex and precise parts according to the present invention;
FIG. 4 is a flow chart of a method of applying the mass gating algorithm of the digital model of complex and precise parts according to the present invention;
FIG. 5 is a schematic diagram of the "canonical tree" required by the layout issue gate of the present invention;
FIG. 6 is a schematic diagram of "skeleton elements" in the skeleton localization model of the present invention;
FIG. 7 is a schematic diagram of a space allocation model of a complex precision part according to the present invention;
FIG. 8 is a schematic structural diagram of a body model of a complex precision part according to the present invention;
FIG. 9 is a schematic structural diagram of a derived mesh model of a complex precision part according to the present invention;
FIG. 10 is a schematic cross-sectional view of a derived mesh model of a complex precision part according to the present invention;
FIG. 11 is a schematic perspective view of a derivative machining model of a complex precision part according to the present invention;
fig. 12 is a schematic perspective view of a derived operation model of a complex precision component according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As described in the background of the invention, the prior art has shortcomings, and in order to solve the above technical problems, the present application proposes a quality gate of a complex and precise digital model of parts and a method for applying the same.
The first embodiment is as follows:
a quality gate for a digital model of complex and precise parts comprises a layout release gate, a pre-release quality gate and a formal release quality gate;
the interior of the layout issuing gate comprises gates such as names, coordinate systems, metering units and the like and framework gates;
the pre-issue quality gate includes: the system comprises a standard gate, a first grid gate and a first processing gate, wherein the standard gate internally comprises design standards, method standards and other standards;
the formal freeze mass gate includes: a second grid door and a second processing door;
wherein, the layout issues each detection item of the door closure and the detection threshold value of each detection item are shown in table 1;
table 1 layout issuing door closing detection item and detection threshold table thereof
| Numbering | Name (R) | Detection threshold for layout issue gate closing |
| 2.3.3.2 | Compliance of length units with settings | Y (model foundation information) unit |
| 2.3.3.3 | Geometric proportion | Y |
| 2.3.5.25 | Model naming | Y (model naming information) |
| 2.3.5.26 | Whether the published element name corresponds to a specification | Y (element release information) |
| 2.3.5.27 | Whether the published element name corresponds to a reference name | Y (element reference information) |
| 2.3.7.1.24 | Allowed unit | ANGLEDEC、ANGLEDMS、ANS.DIMM、cm、DISTINCH、DISTMM、FEET-INC、grade、km、kg |
| 2.3.7.4.2 | Allowable shaft system position | Origin, element vector, X-min, Y-min, Z-min, X-max, Y-max, Z-max |
| 2.3.7.4.4 | Whether the local coordinate system is related or not meets the requirements: coordinate system (right hand, left hand) | Y |
In the above table, Y represents Yes, which means that if the precision part digital model meets the required content in the detection item name, the door is closed and passed, and if not, the door is closed and not passed;
if Y is not included in the detection threshold corresponding to the detection item, the door is closed and passed when the precision part digital model belongs to the set of the detection threshold on the aspect of the detection item, and if the precision part digital model does not belong to the set of the detection threshold, the door is closed and not passed. (the judgment rules of the subsequent gate-off (tables 2 to 6) are the same as those of Table 1)
Wherein: 2.3.5.26, when the published element name corresponds to the specification, the gate passes, and when the published element name does not correspond to the specification, the gate passes; 2.3.7.1.24, when the unit is in the allowable unit range, the door is closed and when the unit is not in the allowable unit range, the door is closed and the door is closed.
Each detection item for regulating the gate closing and the detection threshold value of each detection item are shown in a table 2;
TABLE 2 detection item for door closing regulation and detection threshold table thereof
| Numbering | Name of detection item | Second machining door closing detection threshold |
| 2.3.2.4 | Product/part renewal | Y |
| 2.3.2.5 | Current work object | Y |
| 2.3.4.1 | Features without comments | Y |
| 2.3.5.26 | Whether the published element name corresponds to a specification | Y |
| 2.3.5.27 | Whether the published element name corresponds to a name associated with the published feature | Y |
| 2.3.7.1.1 | Maximum number of elements | Y |
| 2.3.7.3.1 | Disallowed sketch constraint types | Y |
| 2.3.8.3 | Maximum number of features per entity | Num |
| 2.3.8.4 | Each entity feature has only one sketch | Y |
| 2.3.8.8 | Lack of construction history of this entity | N |
| 2.3.11.1 | Disallowed B-Rep feature colors | Color1, Color2, Color3 |
| 2.3.11.2 | Impermissible boundary expression/feature transparency [1-255] | Num |
| 2.3.11.3 | B-Rep color corresponding to a certain fillet radius | Color1, Color2, Color3 |
The detection items of the first grid gate and the detection threshold values of the detection items are shown in a table 3;
TABLE 3 first grid gate closing detection item and detection threshold table thereof
| Numbering | Name of detection item | First grid door shut detection threshold |
| 2.4.9.1 | Disallowed octree tetrahedral mesh cell types | Y |
| 2.5.1.1.4 | Fine curve of | [0.005-0.002] |
| 2.5.1.1.7 | Radius of curvature of small curve | [6-10] |
| 2.5.1.2.5 | Overlapping conductors and dots | [0.01-0.02] |
| 2.5.1.2.6 | Self-intersecting curve | [0-0.01] |
| 2.5.2.1.20 | Self-intersecting curved surface | [0.005-0.02] |
| 2.5.2.4.3 | Tangent continuous narrow surface | [0.01-0.02] |
| 2.5.2.4.4 | Narrow surface area | [0.01-0.02] |
| 2.5.2.4.5 | Relatively narrow face | [30-50] |
| 2.5.2.5.1 | Shell/volume calculation | [0.01-0.02] |
| 2.5.2.5.2 | Open or overlapping shells/rolls | [0.01-0.02] |
| 2.5.2.5.8 | Self-intersecting curved surface | [0.2-0.5] |
| 2.5.2.4.6 | Part or all ofOverlapping surfaces | [0.01-0.02] |
Each detection item of the first processing door and the detection threshold value of each detection item are shown in a table 4;
TABLE 4 first processing gate closing detection item and detection threshold table thereof
| Numbering | Name of detection item | First machining gate closing detection threshold |
| 2.4.1.10 | Disallowed semantic/non-semantic FT/A elements | Y |
| 2.4.1.19 | Useless or reference-free FT/A data elements | N |
| 2.4.3.30 | Thread type, description and definition compliance with specifications | Y |
| 2.4.4.9 | Whether or not a part has a mirror image in a superordinate part | N |
| 2.4.4.14 | Product collision detection | N |
| 2.5.1.1.4 | Fine curve of | Y |
| 2.5.1.2.4 | Fine curve segment | [0.005-0.01] |
| 2.5.1.2.5 | Overlapping conductors and dots | [0.01-0.02] |
| 2.5.2.1.10 | Overlapping curved surfaces | [0-30] |
| 2.5.2.1.20 | Self-intersecting curved surface | [0.005-0.02] |
| 2.5.2.1.21 | Small radius of curvature of thin part surfaces | [0.00005-0.0001] |
| 2.5.2.4.2 | Narrow side | [0.01-0.02] |
| 2.5.2.4.4 | Narrow surface area | [0.01-0.02] |
| 2.5.2.4.5 | Relatively narrow face | [30-50] |
| 2.5.2.5.1 | Shell/volume calculation | [0.01-0.02] |
| 2.4.3.3 | Disallowing mixture of physical features and Boolean features | Y |
| 2.5.2.5.4 | Non-tangent plane (G1 discontinuous) | Y |
| 2.5.2.5.8 | Self-intersecting curved surface | [0.2-0.5] |
| 2.5.2.6.7 | Allowable curved fillet radius | [0-0.5] |
| 2.5.2.6.8 | Allowed solid fillet radius | [3-10] |
| 2.5.2.6.9 | Allowable chamfer length | Num,Ratio1,Ratio2 |
The detection items of the second grid gate and the detection threshold values of the detection items are shown in a table 5;
TABLE 5 second grid gate-off detection item and detection threshold table thereof
| Numbering | Name of detection item | Second grid door shut detection threshold |
| 2.5.1.1.4 | Fine curve of | [0.001-0.005] |
| 2.5.1.1.7 | Radius of curvature of small curve | [3-5] |
| 2.5.1.2.5 | Overlapping conductors and dots | [0.005-0.01] |
| 2.5.1.2.6 | Self-intersecting curve | [0-0.01] |
| 2.5.2.1.20 | Self-intersecting curved surface | [0.001-0.005] |
| 2.5.2.4.3 | Tangent continuous narrow surface | [0-0.01] |
| 2.5.2.4.4 | Narrow surface area | [0-0.02] |
| 2.5.2.4.5 | Relatively narrow face | [0-30] |
| 2.5.2.5.1 | Shell/volume calculation | [0-0.02] |
| 2.5.2.5.2 | Open or overlapping shells/rolls | [0-0.01] |
| 2.5.2.5.8 | Self-intersecting curved surface | [0.01-0.2] |
| 2.5.2.4.6 | Partially or wholly overlapping faces | [0.005-0.01] |
| 2.8.3 | The inability to include external link relationships in the model | Y |
| 2.8.4 | Quality defects that cannot include warning classes in the model; | Y |
| 2.5.3.1 | removing discarded geometric elements | Y |
Each detection item of the second machining door and the detection threshold value of each detection item are shown in a table 6;
TABLE 6 second processing door closing detection item and detection threshold table thereof
| Numbering | Name of detection item | Second machining door closing detection threshold |
| 2.4.2.1 | Numerical control machining clamp | Y |
| 2.4.2.2 | Numerical control machining of blank | Y |
| 2.4.2.3 | Numerical control machining safety plane | Y |
| 2.4.2.5 | Impermissible numerical control machine tool | Y |
| 2.8.3 | The inability to include external link relationships in the model | Y |
| 2.8.4 | Quality defects that cannot include warning classes in the model; | Y |
| 2.5.3.1 | removing discarded geometric elements | Y |
In a precise part digital model, quality defects are divided into three types of specification, grid and processing (the specification, grid and processing are one of quality defect types), wherein the defect types of the specification are divided into three types of constraint, state and engineering, wherein the defects in the constraint, state and engineering are sequentially constraint, state and naming defects, the defect types of the grid and processing are collectively called geometric defects, and the constraint, state, naming and geometric defects are all one of defect types;
among the above-mentioned quality defects of the digital twin geometric model, the problems caused particularly in the grid and machining are the most, and the corresponding causes are the most complicated;
referring to fig. 1-3, before a precision part digital model is actually put into production from the beginning of design, technical inspection needs to be performed on the precision part digital model in each flow path, wherein the technical inspection state is divided into three states of design, pre-release and formal freezing, and in the three states, a layout release gate, a pre-release quality gate and a formal freezing quality gate are respectively adopted to inspect three types of quality defects in the aspects of specification, grid and processing;
in the state of design, the skeleton positioning model, the space distribution model and the design body model are respectively checked through a layout release gate;
in the state of pre-issuing, the first grid gate and the standard gate are used for checking the derivative grid model for simulation, and the first processing gate is used for checking the derivative processing model for the opposite manufacturing;
in the formal freezing state, checking the derivative grid model to be frozen through a second grid gate, and checking the derivative machining model to be frozen through a second machining gate;
the above-mentioned respective gate-off is taken as a basis for judgment of the degree of defect (severity, generality and warning).
With the continuous use of the application method, parameter thresholds in a layout release gate, a first grid gate, a first processing gate, a standard gate, a second grid gate and a second processing gate can be adjusted;
the layout issuing gate, the first grid gate, the first processing gate, the standard gate, the second grid gate and the second processing gate can also adjust the execution times, the defect identification threshold and the detection flow of each gate according to the difference of the precise part digital models, the difference of the technical states in the design process and the difference of the design cooperation modes.
In fig. 2, three dimensions of objectives are set: the technical state of the process in the design of the complex parts is expressed by the number and degree of defects in the model, the technical state of the quality of different stages is expressed by the threshold value of the reaction precision, and the mature process of the complex parts is measured in a comprehensive balance manner from the aspects of controllable cost and feasible technology based on the digital model.
And (3) association: dimension Z: (defect items) cause the quality problems of the outstanding model, such as insufficient structural strength, processing failure and frequent rework of the complex parts; x dimension: (technical state inspection) three parallel shared milestones based on the technical state of the model in the whole process of designing the complex parts; y dimension: (parameter threshold) quality and precision of a digital model among three parallel shared milestones in the whole process of designing the complex parts;
mutual influence: the smaller the threshold setting range is, the higher the model requirement is, and the more the cost and time are required for reaching the advanced technical state; the technical states are 'during design, pre-release and formal release' from low to high respectively, which represents that the quality (requirement) of the geometric model is continuously improved.
Example two:
referring to fig. 3-4, an application method of the digital model quality gate of the complex precision parts includes the following steps:
s1, establishing a basic model:
establishing a basic model according to a preset standard, a parameter and a design template of an identifier in an enterprise;
the establishment of the basic model needs to design, draw and calibrate on the basis of the design templates of the preset specifications, parameters and identifications in the enterprise;
referring to fig. 5, a specification tree of a digital model of a turbine component includes skeleton elements, reference elements, material definitions, and entity elements all having specification names;
through the design template of the preset specifications, parameters and identifications inside the enterprise, in the actual execution process, the gate is issued through the template and the layout for automatic detection, so that subsequent change is avoided, and the reading, modification and recycling efficiency of the model is improved.
S2, proofing layout design:
respectively establishing a framework positioning model, a space distribution model and a design ontology model on the basis of the basic model;
wherein, the basic model established in the step S1 only includes basic parameters and templates (i.e. specific contents of the preset specifications, parameters and identified design templates in the step S1);
the framework positioning model is formed by adding point and line (segment and curve) geometric elements on a basic model, the framework model is quoted by a body model and a space distribution model after being released, and the framework positioning model displays the positions of the geometric elements of the precise parts and the installation position of the relative integral product;
the space distribution model is formed by generating an entity, a stretching body and a sweeping body on the basis of the framework positioning model, and the space distribution model displays the space layout of the precision parts;
the design ontology model is formed by building a designer by referring to skeleton model elements and distributing model areas according to space.
Referring to fig. 6, a skeleton positioning model of a complex and precise turbine component, a position of each plane, a lattice defined on the plane, a distribution of skeleton elements, a linetype, a coloring, and a shape of the skeleton elements;
referring to FIG. 7, a space allocation model of a turbine in the overall assembly of an engine or turbine. Wherein the space allocation model has the following purposes: the installation space of the equipment is reserved, the space position is reserved, other systems do not occupy, and meanwhile other systems perform space interference and gap analysis and evaluation at any time.
S3, checking quality technical states of the proofing layout model:
calling a layout release gate to respectively check the design body models established in the step S2;
when the design body model fails to pass the check of the layout release gate, returning the failed model to the step S2 for re-proofing layout design;
when the design ontology model passes the inspection of the layout release gate, continuing to execute the next step;
the retrieval items of the layout issuing gate and the corresponding passing threshold values are shown in a table 1, and the layout issuing gate is used for judging names, definitions, measurement units, coordinate systems and requirements in the skeleton positioning model, the space distribution model and the design body model; detecting whether the framework positioning model, the space distribution model and the design body model meet the design specifications;
the parameter threshold of the layout issuing gate can be adjusted according to the difference of the precise part digital models, the difference of the technical states in the design process and the difference of the design cooperation modes, wherein when the products are different, the parameter threshold of the layout issuing gate is adjusted according to the requirement of the product on the external partner;
s4, professional collaborative design:
establishing a derived grid model for simulation and a derived processing model for manufacturing on the basis of issuing a design body model for gate closing inspection through layout;
carrying out mesh division on a derived mesh model for simulation; performing machining preparation on the derivative machining model for manufacturing, wherein the machining preparation is that machining path and machining process information are added on the basis of the derivative grid model for simulation;
s5, checking the quality and technical state of the pre-issued model:
calling a pre-issuing quality gate to respectively check the derived grid model for simulation and the derived machining model for manufacturing established in the step S4;
when any one of the derived grid model for simulation and the derived machining model for manufacturing fails to pass the inspection of the pre-issued quality gate, returning the failed model to the step S4 for re-professional collaborative design;
when all the derived grid models for simulation and the derived machining models for manufacturing pass the inspection of the pre-issued quality gate, continuing to execute the next step;
further, in the step S5, the pre-issued quality gate includes a first grid gate, a first machining gate, and a standard gate;
the first grid gate and the standard gate are used for checking a derived grid model for simulation and detecting the defects of geometric elements influencing grid quality, wherein the detection content of the first grid gate is shown in a table 2, and the detection content of the standard gate is shown in a table 4; the first machining gate is used for checking the derivative machining model for manufacturing, and the detection content of the first machining gate is shown in table 3.
Further, in step S5:
when the derived grid model for simulation does not pass the inspection of the first grid gate, returning the derived grid model for simulation to the step S4, and after the derived grid model for simulation is evaluated by strength and pneumatic professionals, repairing the derived grid model together with designers;
when the derived machining model facing the manufacturing does not pass the inspection of the first machining gate, returning the derived machining model facing the manufacturing to the step S4, and repairing the derived machining model facing the manufacturing together with a designer after being evaluated by a process, numerical control machining or pipe bending worker;
and when the derived grid model for simulation does not pass the inspection of the standard gate, returning the derived grid model for simulation to the step S4, evaluating by a subsystem responsible person, and repairing together with a design responsibility engineer.
Wherein, when the door closing verification fails, the log can report an error. Errors are classified into specification and standard classes, method classes, and geometry classes.
When the name is found not to accord with the number regulation in the layout release gate, correcting according to the prompt or the file; the coordinate system refers to errors and is corrected through operation.
Geometric errors found in the first grid gate need to modify the topological structure, key features which cannot be repaired sometimes need to be redesigned, and useless garbage elements are deleted in time. The geometric elements of the damaged tool found in the machining gate must be removed or corrected, and the tiny geometric elements must be deleted or the parameters must be adjusted.
Further, the parameter threshold values of the first grid gate, the first processing gate and the standard gate can be adjusted according to different digital models of precise parts, different technical states in the design process and different design cooperation modes;
if a large number of fine line segments and fine curved surfaces are produced in the complex curved surface modeling process, the elements cannot be effectively and completely avoided in the precise design, and the tolerance can be properly widened. Such as: since the arc smaller than 0.005mm is considered to be a slight arc, the threshold value can be adjusted to be smaller than 0.01mm;
s6, checking the professional model;
on the basis of calling a derivative grid model for simulation and a derivative machining model for manufacturing, which are issued in advance for quality gate inspection;
establishing a derived operation model to be frozen by using a design ontology model;
establishing a derivative grid model for freezing preparation by using the derivative grid model for simulation;
establishing a pre-frozen derivative machining model by using a derivative machining model facing the manufacturing;
wherein the pre-frozen derived mesh model and the pre-frozen derived machining model are evolved step by step; the skeleton positioning model, the space distribution model and the body model In design (In Work) have a relationship; with the development of design, the framework positioning model and the space allocation model do not participate in downstream work after the mission is finished, and the framework positioning model and the space allocation model are changed and the life cycle of the parts is restarted unless the important parts are changed.
In the pre-issuing process, the grid model, the processing model and the body model are integrated; only the standard definition of the derived grid model is added on the basis of the body model, and the definition of the processing element is added. When the first grid door is closed, the geometric elements of the ontology model influencing grid division are checked to have strict requirements on quality.
Wherein overlapping faces, non-solid models, self-intersecting parts cannot be machined; processing round corners and chamfers with unavailable precision; resulting in discontinuous elements that process very slowly.
Resulting in the generation of fine cells and even failed fine planes, self-intersecting planes, twisted surfaces for mesh division.
S7, checking the quality technical state of the formal freezing model:
calling a formal issuing quality gate to respectively check the derivative grid model to be frozen and the derivative machining model to be frozen, which are established in the step S6;
when any one of the derivative grid model to be frozen and the derivative machining model to be frozen does not pass the examination of the official release quality gate, returning the failed model to the step S6 for re-professional collaborative design;
when the derivative grid model to be frozen and the derivative machining model to be frozen all pass the checking of the official release quality gate, continuously executing the next step;
further, in the step S7, the official release quality gate includes a second grid gate and a second machining gate;
the second grid gate is used for checking the derivative grid model which is ready to freeze, and the second processing gate is used for checking the derivative processing model which is ready to freeze.
Wherein, the detection content of the second grid door is shown in a table 5, and the detection content of the second processing door is shown in a table 6;
further, the parameter threshold values of the second grid gate and the second machining gate can be adjusted according to different digital models of the precise parts, different technical states in the design process and different design cooperation modes;
further, in step S7:
when the derivative grid model which is prepared to be frozen does not pass the inspection of the second grid gate, performing detailed analysis, repair and processing on the defect which does not pass the inspection;
when the pre-frozen derived machining model does not pass the inspection of the second machining gate, the defect which does not pass is carefully analyzed, repaired and processed.
S8, model delivery:
formally freezing the derivative operation model to be frozen, the derivative processing model to be frozen and the derivative operation model to be frozen which pass the formally-issued quality gate inspection, and sequentially generating a delivery operation model, a delivery processing model and a delivery grid model;
delivering the delivery operation model for the maintenance and the maintenance of the later operation of the parts;
delivering the delivery processing model for trial production of test pieces and formal batch production;
and delivering the delivery grid model for simulating and testing the overall performance of the part.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A complex precision parts digital model mass gating, the complex precision parts digital model mass gating comprising: a layout issuing gate, a pre-issuing quality gate and a formal issuing quality gate;
wherein the pre-issue quality gate comprises: a standard gate, a first grid gate and a first processing gate; the formal freeze mass gate includes: a second grid door and a second processing door;
before a precise part digital model is designed from the beginning to the actual production, technical inspection needs to be carried out on the precise part digital model in each flow, the technical inspection state is divided into three states of design, pre-release and formal freezing, and in the three states, three types of quality defect types, namely specification, grid and processing, are inspected by respectively adopting a layout release gate, a pre-release quality gate and a formal freezing quality gate;
the layout issuing gate, the first grid gate, the first processing gate, the standard gate, the second grid gate and the second processing gate can also adjust the execution times, the defect identification threshold and the detection flow of each gate according to the difference of the precise part digital models, the difference of the technical states in the design process and the difference of the design cooperation modes.
2. A method for applying a quality gate of a digital model of a complex precision part, using the quality gate of the digital model of a complex precision part according to claim 1, comprising the steps of:
s1, establishing a basic model:
establishing a basic model according to a preset standard, a parameter and a design template of an identifier in an enterprise;
s2, proofing layout design:
building a design ontology model by using a framework positioning model and a space distribution model on the basis of a basic model;
s3, detecting quality technical states of the proofing layout model:
calling a layout release gate to respectively check the design body model established in the step S2;
when the design body model fails to pass the check of the layout release gate, returning the failed model to the step S2 for re-proofing layout design;
when the design ontology model passes the inspection of the layout release gate, continuing to execute the next step;
s4, professional collaborative design:
establishing a derived grid model for simulation and a derived processing model for manufacturing on the basis of a design body model for issuing gate-closing inspection through layout;
s5, detecting the quality and technical state of the pre-issued model:
calling a pre-issued quality gate to respectively check the derived grid model for simulation and the derived machining model for manufacturing in the step S4;
the pre-issue quality gate includes: a standard gate, a first grid gate and a first processing gate;
when any one of the derived grid model for simulation and the derived machining model for manufacturing fails to pass the inspection of the pre-issued quality gate, returning the failed model to the step S4 for re-professional collaborative design;
when all the derived grid models for simulation and the derived machining models for manufacturing pass the inspection of the pre-issued quality gate, continuing to execute the next step;
s6, checking the professional model;
on the basis of calling a derivative grid model for simulation and a derivative machining model for manufacturing, which are issued in advance for quality gate inspection;
establishing a derivative operation model for freezing preparation by using a design ontology model;
establishing a derivative grid model for freezing preparation by using the derivative grid model for simulation;
establishing a pre-frozen derivative machining model by using a derivative machining model facing the manufacturing;
s7, checking the quality technical state of the formal freezing model:
calling a formal issuing quality gate to respectively check the pre-frozen derived grid model and the pre-frozen derived machining model established in the step S6 and check the design body model which is ready for delivery;
the formal issuing quality gate comprises a second grid gate and a second processing gate;
when any one of the pre-frozen derived grid model, the pre-frozen derived machining model and the pre-delivered design ontology model fails to pass the checking of the official release quality gate, returning the failed model to the step S6 for re-professional collaborative design;
when the pre-frozen derived grid model, the pre-frozen derived machining model and the pre-delivered design body model all pass the checking of the official release quality gate, continuously executing the next step;
s8, model delivery:
formally freezing the derivative operation model to be frozen, the derivative processing model to be frozen and the derivative operation model to be frozen which pass the formally-issued quality gate inspection, and sequentially generating a delivery operation model, a delivery processing model and a delivery grid model;
delivering the delivery operation model for the maintenance and the maintenance of the later operation of the parts;
delivering the delivery processing model for trial production of test pieces and formal batch production;
delivering the delivery grid model for simulating and testing the overall performance of the part;
with the continuous use of the application method of the quality gate of the complex and precise digital model of the parts, the parameter thresholds in the layout issuing gate, the first grid gate, the first processing gate, the standard gate, the second grid gate and the second processing gate can be adjusted;
the layout issuing gate, the first grid gate, the first processing gate, the standard gate, the second grid gate and the second processing gate can also adjust the execution times, the defect identification threshold and the detection flow of each gate according to the difference of precise part digital models, the difference of technical states in the design process and the difference of design cooperation modes.
3. The method for applying the quality gate of the digital model of the complex precise parts as claimed in claim 2, wherein:
in step S5, the first grid gate and the standard gate are used to inspect the derivative grid model for simulation, and the first machining gate is used to inspect the derivative machining model for manufacturing.
4. The method for applying the quality gate of the digital model of the complex precise parts as claimed in claim 3, wherein in the step S5:
when the derived grid model for simulation does not pass the first grid gate check, returning the derived grid model for simulation to the step S4, and after being evaluated by strength and pneumatic professionals, repairing together with designers;
when the derived machining model facing the manufacturing does not pass the inspection of the first machining gate, returning the derived machining model facing the manufacturing to the step S4, and repairing the derived machining model facing the manufacturing together with a designer after being evaluated by a process, numerical control machining or pipe bending worker;
and when the derived grid model for simulation does not pass the inspection of the standard gate, returning the derived grid model for simulation to the step S4, evaluating by a subsystem responsible person, and repairing together with a design responsibility engineer.
5. The method for applying the quality gate of the digital model of the complex precise parts as claimed in claim 4, wherein:
in step S7, the second grid gate is used to check the preliminary frozen derivative grid model, and the second machining gate is used to check the preliminary frozen derivative machining model.
6. The method for applying the quality gate of the digital model of the complex precise parts as claimed in claim 5, wherein in the step S7:
when the pre-frozen derived grid model does not pass the inspection of the second grid gate, performing detailed analysis, repair and processing on the defect which does not pass the inspection;
when the pre-frozen derived machining model does not pass the inspection of the second machining gate, the defect which does not pass is carefully analyzed, repaired and processed.
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