CN104361146A - Aerospace sheet metal part extruded section subsidence sunken part establishment method - Google Patents
Aerospace sheet metal part extruded section subsidence sunken part establishment method Download PDFInfo
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Abstract
The invention belongs to airplane design technique and relates to improvement of an aerospace sheet metal part extruded section sunken part establishment method. The sunk part establishment method comprises the following steps: defining; marking geometrical elements and parameters; inputting sunken part standard design parameters; offsetting to obtain a plane; offsetting to obtain an offset curved surface; continuously expanding the inner side surface tangentially in a solid body to obtain a face list; partitioning and removing the solid body on one side; establishing a filleted corner; thickening to generate the sunken part. The invention provides the improved aerospace sheet metal part extruded section sunken part establishment method, which greatly shortens the design time, improves the design efficiency, ensures the establishment quality of the sunken part, and realizes the standardization of the established sunken part.
Description
Technical field
The invention belongs to airplane design technology, relate to the improvement of creation method that aviation sheet metal part extrudate sunk.
Background technology
At present, the creation method that aviation sheet metal part extrudate sink is: biased flange medial surface and collapsed position reference planes, and carries out asking friendship, segmentation, cutting to calculate, and adds fillet surface, then the method by trying to gather creates transition base angle, has finally thickened extrudate and has sunk.Its shortcoming is: the first, need to inquire about a large amount of papery normative documents, design time is long, and design efficiency is low; The second, be difficult to the establishment quality ensureing to sink, due to designer's individual's level and the difference of custom, cause aviation sheet metal part to sink the method disunity created, the sagging quality created is uneven, cannot ensure standardization.
Summary of the invention
The object of the invention is: the aviation sheet metal part extrudate proposing a kind of improvement sink creation method, to shorten design time, improves design efficiency, ensures the establishment quality of sinking, realize institute and create sagging standardization.
Technical scheme of the present invention is: a kind of aviation sheet metal part extrudate sink creation method, based on a multi-purpose computer and airplane design software CATIA, creates the step that aviation sheet metal part extrudate sink as follows:
1, define: the sheet metal part sunk before creating is connected to form by web, flange and transition base angle, web and flange are plane, both angle α=45 ° ~ 135 °, transition base angle is circular shape, web is tangentially connected with an edge at transition base angle, and flange is tangentially connected with another edge at transition base angle; Sinking of creating is made up of blanketed zone 7, zone of transition 8, blanketed zone, base angle 9 and base angle zone of transition 6;
The geometric element of the sheet metal part 2, before the sagging establishment of mark and parameter: web upper surface 1 is labeled as BottomPlane; Medial surface 2 is labeled as InnerSideList; End face 3 is labeled as RefEndFace; Require create collapsed position reference planes 5 and be labeled as PosRefPlane according to trim designs, this plane requires vertical with flange medial surface with web upper surface;
3, recall on a general-purpose computer sink create before the mathematical model of sheet metal part, the sagging standard design parameter of input in mathematical model: input transition district 8 length L, sink degree of depth Depth, L and Depth according to trim designs requirement and navigation mark HB 0-22-2008 acquisition standard parameter value;
4, biased PosRefPlane obtains plane, and offset or dish is L, is labeled as: OffsetPlane, and concrete steps are:
4.1, obtain the outer normal direction of RefEndFace, be labeled as: OuterVector_EF;
4.2, biased PosRefPlane plane, offset or dish is L;
4.3, with PosRefPlane initial point to OffsetPlane initial point, structure grain ConstructVector1;
If the angle between 4.4 OuterVector_EF and ConstructVector1 is less than or equal to 90 degree, then by OffsetPlane reverse bias;
5, biased InnerSideList obtains screw rotor, and offset or dish is Depth, is labeled as: OffsetSurface, and concrete steps are:
5.1, obtain the outer normal direction of InnerSideList, be labeled as: OuterVector_IS;
5.2, biased InnerSideList curved surface, offset or dish is Depth;
5.3, with InnerSideList mid point to OffsetSurface mid point, structure grain ConstructVector2;
If the angle between 5.4 OuterVector_IS and ConstructVector2 is more than or equal to 90 degree, then by OffsetSurface reverse bias;
6, OffsetSurface and PosRefPlane asks friendship, and intersection is labeled as: IntersectCurve1;
7, split OffsetSurface by IntersectCurve1, reservation face is labeled as: RemainFace1, and concrete steps are:
7.1, OffsetSurface is split by IntersectCurve1;
7.2, with IntersectCurve1 mid point to RemainFace1 mid point, structure grain ConstructVector3;
If the angle between 7.3 OuterVector_EF and ConstructVector3 is more than or equal to 90 degree, then retain RemainFace1 opposite side curved surface;
8, InnerSideList and OffsetPlane asks friendship, and intersection is labeled as: IntersectCurve2;
9, split InnerSideList by IntersectCurve2, reservation face is labeled as: RemainFace2, and concrete steps are:
9.1, InnerSideList is split by IntersectCurve2;
9.2, with IntersectCurve2 mid point to RemainFace2 mid point, structure grain ConstructVector4;
If the angle between 9.3 OuterVector_EF and ConstructVector4 is less than or equal to 90 degree, then retain RemainFace2 opposite side curved surface;
10, add fillet surface between RemainFace1 and RemainFace2, if G0 is continuous, then needs to add round-corner transition respectively at IntersectCurve1 and IntersectCurve2 place, if G1 is continuous, then do not need.Whole fillet surface is labeled as: ConnectFace;
11, in conjunction with RemainFace1, RemainFace2 and ConnectFace, JoinFace is labeled as;
12, in entity, tangent continuous expansion medial surface obtains face list, is labeled as: TanFaceList;
13, use PosRefPlane to split deletion one side entity, continue to use PosRefPlane segmentation to delete opposite side entity;
14, JoinFace and TanFaceList creates fillet, and be labeled as BottomCornerList, concrete steps are:
14.1, obtain a series of tangent continuous print line nearest from web surface in JoinFace, hereinafter referred to as bottom line, be labeled as BottomLineList, concrete steps are:
14.1.1, travel through all surface elements in JoinFace, extract the outer shroud border FaceBoundaryLineList of each surface element, all FaceBoundaryLineList are added list BoundaryLineList;
14.1.2, all line elements in traversal BoundaryLineList, multiplicity is the outer shroud border that the set of the line element of 1 is JoinFace, is defined as OuterLoop;
14.1.3, travel through all line elements in OuterLoop, extract the limit that distance web surface is nearest, be defined as NearestLine;
14.1.4, in OuterLoop NearestLine is deleted, and NearestLine is added list BottomLineList;
14.1.5, travel through all line elements in BottomLineList, extract two topological points of each line element, all topology points are added list BoundaryVertexList;
14.1.6, all topological points in BoundaryVertexList are traveled through, multiplicity is the frontier point list that the set of the topology point of 1 is BottomLineList, be defined as OuterVertexList, element number in OuterVertexList is generally 2, be defined as VertexSide1 and VertexSide2, calculated the outer tangent line of VertexSide1 and VertexSide2 in BottomLineList respectively: OuterTangentVector1 and OuterTangentVector2;
14.1.7, travel through all line elements in OuterLoop, extract and wherein distinguish tangent continuous print line element with BottomLineList at VertexSide1 and VertexSide2 place, added BottomLineList respectively, and delete in OuterLoop;
14.1.8, step 14.1.5 is repeated, until can not find in OuterLoop with BottomLineList till the tangent continuous print line element in VertexSide1 or VertexSide2 place;
14.2, JoinFace is extended along BottomLineList extrapolation, be labeled as ExtraJoinFace;
14.3, by ExtraJoinFace to TanFaceList partition, cutting, retain the main part in TanFaceList, be labeled as: TanFaceSplit;
14.4, by TanFaceSplit to ExtraJoinFace partition, cutting, retain the main part in ExtraJoinFace, be labeled as: ExtraJoinSplit;
14.5, between ExtraJoinSplit and TanFaceSplit, generate fillet, radius of corner is panel beating base angle radius, and result is BottomCornerList;
15, all curved surfaces are thickened, generate entity, be net result.
Advantage of the present invention is: the aviation sheet metal part extrudate proposing a kind of improvement sink creation method, substantially reduces design time, improves design efficiency, ensure that sagging establishment quality, achieve create the standardization of sinking.
Accompanying drawing explanation
Fig. 1 is the structural representation of the sheet metal part before sagging establishment.1 is the upper surface of web, and 2 is the medial surface of flange, and 3 is the left surface of flange.
Fig. 2 is the schematic diagram of collapsed position reference planes and dip parameters, and 4 is collapsed position reference planes.
Fig. 3 is generting element schematic diagram.
Fig. 4 is segmentation result schematic diagram.
Fig. 5 is fillet surface schematic diagram.
Fig. 6 is medial surface expansion curved surface schematic diagram.
Fig. 7 is bottom line schematic diagram, and 5 is bottom line.
Fig. 8 is that extrapolation extends curved surface schematic diagram.
Fig. 9 is segmentation result schematic diagram.
Figure 10 is transition base angle schematic diagram.
Figure 11 is the structural representation of the sheet metal part after sagging establishment.
Embodiment
Below the present invention is described in further details.See Fig. 1 to Figure 11, a kind of aviation sheet metal part extrudate sink creation method, based on a multi-purpose computer and airplane design software CATIA, creates the step that aviation sheet metal part extrudate sink as follows:
1, define: the sheet metal part sunk before creating is connected to form by web, flange and transition base angle, web and flange are plane, both angle α=45 ° ~ 135 °, transition base angle is circular shape, web is tangentially connected with an edge at transition base angle, flange is tangentially connected with another edge at transition base angle, as shown in Figure 1; Sinking of creating is made up of blanketed zone 7, zone of transition 8, blanketed zone, base angle 9 and base angle zone of transition 6, as shown in figure 11;
The geometric element of the sheet metal part 2, before the sagging establishment of mark: web upper surface 1 is labeled as BottomPlane; Medial surface 2 is labeled as InnerSideList; End face 3 is labeled as RefEndFace; Require create collapsed position reference planes 5 and be labeled as PosRefPlane according to trim designs, this plane requires vertical with flange medial surface with web upper surface, as shown in Figure 2;
3, recall on a general-purpose computer sink create before the mathematical model of sheet metal part, the sagging standard design parameter of input in mathematical model: as shown in Figure 2, input transition district 8 length (L), the sagging degree of depth (Depth), L and Depth requires according to trim designs and navigation mark HB 0-22-2008 obtains standard parameter value;
4, biased PosRefPlane obtains plane, and offset or dish is L, is labeled as: OffsetPlane, and concrete steps are:
4.1, obtain the outer normal direction of RefEndFace, be labeled as: OuterVector_EF;
4.2, biased PosRefPlane plane, offset or dish is L;
4.3, with PosRefPlane initial point to OffsetPlane initial point, structure grain ConstructVector1;
If the angle between 4.4 OuterVector_EF and ConstructVector1 is less than or equal to 90 degree, then by OffsetPlane reverse bias;
5, biased InnerSideList obtains screw rotor, and offset or dish is Depth, is labeled as: OffsetSurface, and concrete steps are:
5.1, obtain the outer normal direction of InnerSideList, be labeled as: OuterVector_IS;
5.2, biased InnerSideList curved surface, offset or dish is Depth;
5.3, with InnerSideList mid point to OffsetSurface mid point, structure grain ConstructVector2;
If the angle between 5.4 OuterVector_IS and ConstructVector2 is more than or equal to 90 degree, then by OffsetSurface reverse bias;
6, OffsetSurface and PosRefPlane asks friendship, and intersection is labeled as: IntersectCurve1;
7, split OffsetSurface by IntersectCurve1, reservation face is labeled as: RemainFace1, and concrete steps are:
7.1, OffsetSurface is split by IntersectCurve1;
7.2, with IntersectCurve1 mid point to RemainFace1 mid point, structure grain ConstructVector3;
If the angle between 7.3 OuterVector_EF and ConstructVector3 is more than or equal to 90 degree, then retain RemainFace1 opposite side curved surface;
8, InnerSideList and OffsetPlane asks friendship, and intersection is labeled as: IntersectCurve2;
9, split InnerSideList by IntersectCurve2, reservation face is labeled as: RemainFace2, and concrete steps are:
9.1, InnerSideList is split by IntersectCurve2;
9.2, with IntersectCurve2 mid point to RemainFace2 mid point, structure grain ConstructVector4;
If the angle between 9.3 OuterVector_EF and ConstructVector4 is less than or equal to 90 degree, then retain RemainFace2 opposite side curved surface;
10, add fillet surface between RemainFace1 and RemainFace2, if G0 is continuous, then needs to add round-corner transition respectively at IntersectCurve1 and IntersectCurve2 place, if G1 is continuous, then do not need.Whole fillet surface is labeled as: ConnectFace;
11, in conjunction with RemainFace1, RemainFace2 and ConnectFace, JoinFace is labeled as;
12, in entity, tangent continuous expansion medial surface obtains face list, is labeled as: TanFaceList;
13, use PosRefPlane to split deletion one side entity, continue to use PosRefPlane segmentation to delete opposite side entity, object is deleted by original entity;
14, JoinFace and TanFaceList creates fillet, and be labeled as BottomCornerList, concrete steps are:
14.1, obtain a series of tangent continuous print line nearest from web surface in JoinFace, hereinafter referred to as bottom line, be labeled as BottomLineList, concrete steps are:
14.1.1, travel through all surface elements in JoinFace, extract the outer shroud border FaceBoundaryLineList of each surface element, all FaceBoundaryLineList are added list BoundaryLineList;
14.1.2, all line elements in traversal BoundaryLineList, multiplicity is the outer shroud border that the set of the line element of 1 is JoinFace, is defined as OuterLoop;
14.1.3, travel through all line elements in OuterLoop, extract the limit that distance web surface is nearest, be defined as NearestLine;
14.1.4, in OuterLoop NearestLine is deleted, and NearestLine is added list BottomLineList;
14.1.5, travel through all line elements in BottomLineList, extract two topological points of each line element, all topology points are added list BoundaryVertexList;
14.1.6, all topological points in BoundaryVertexList are traveled through, multiplicity is the frontier point list that the set of the topology point of 1 is BottomLineList, be defined as OuterVertexList, element number in OuterVertexList is generally 2, be defined as VertexSide1 and VertexSide2, calculated the outer tangent line of VertexSide1 and VertexSide2 in BottomLineList respectively: OuterTangentVector1 and OuterTangentVector2;
14.1.7, travel through all line elements in OuterLoop, extract and wherein distinguish tangent continuous print line element with BottomLineList at VertexSide1 and VertexSide2 place, added BottomLineList respectively, and delete in OuterLoop;
14.1.8, step 14.1.5 is repeated, until can not find in OuterLoop with BottomLineList till the tangent continuous print line element in VertexSide1 or VertexSide2 place;
14.2, JoinFace is extended along BottomLineList extrapolation, be labeled as ExtraJoinFace;
14.3, by ExtraJoinFace to TanFaceList partition, cutting, retain the main part in TanFaceList, be labeled as: TanFaceSplit;
14.4, by TanFaceSplit to ExtraJoinFace partition, cutting, retain the main part in ExtraJoinFace, be labeled as: ExtraJoinSplit;
14.5, between ExtraJoinSplit and TanFaceSplit, generate fillet, radius of corner is panel beating base angle radius, and result is BottomCornerList;
15, all curved surfaces are thickened, generate entity, be net result.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is elaborated.Adopt C Plus Plus to realize aviation sheet metal part extrudate to sink automatic creation method, the CAD software platform of employing is CATIA, and development platform is CATIA secondary developing platform CAA, and the concrete steps of enforcement are:
The outer normal direction OuterVector_EF of step 1, acquisition end face 3, the outer normal direction OuterVector_IS of medial surface 2, the outer normal direction OuterVector_B of web surface 1, all normal direction data types are CATMathVector;
Step 2, execution " Plane " order, biased collapsed position reference planes " Plane.1 ", as shown in Figure 3, obtain " Plane.2 " feature, then travel direction test, and corresponding testing procedure is as follows:
1. with " Plane.1 " initial point to " Plane.2 " initial point, structure grain ConstructVector1; If the angle 2. between OuterVector_EF and ConstructVector1 is less than or equal to 90 degree, then " Plane.2 " is reverse.
Step 3, execution " Join " order, engage medial surface, as shown in Figure 3, obtain " Join.1 " feature;
Step 4, execution " Offset " order, with the outer normal direction of medial surface for reference direction biased " Join.1 ", as shown in Figure 3, obtain " Offset.1 " feature, then travel direction test, corresponding testing procedure is as follows:
1. with " Join.1 " mid point to " Offset.1 " mid point, structure grain ConstructVector2; If the angle 2. between OuterVector_IS and ConstructVector2 is more than or equal to 90 degree, then " Offset.1 " is reverse.
Step 5, execution " Intersection " order, ask friendship by " Offset.1 " and " Plane.1 ", as shown in Figure 3, obtain " Intersection.1 " feature;
Step 6, execution " Intersection " order, ask friendship by " Join.1 " and " Plane.2 ", as shown in Figure 3, obtain " Intersection.2 " feature;
Step 7, execution " Split " order, by " Intersection.1 " segmentation " Offset.1 ", retain the curved surface of direction with reference to end face side, as shown in Figure 4, obtain " Split.1 " feature, then travel direction test, corresponding testing procedure is as follows:
1. with " Intersection.1 " mid point to " Split.1 " mid point, structure grain ConstructVector3; If the angle 2. between OuterVector_EF and ConstructVector3 is more than or equal to 90 degree, then retain " Split.1 " opposite side curved surface.
Step 8, execution " Split " order, by " Intersection.2 " segmentation " Join.1 ", retain the curved surface of direction with reference to end face opposite side, as shown in Figure 4, obtain " Split.2 " feature, then travel direction test, corresponding testing procedure is as follows:
1. with " Intersection.2 " mid point to " Split.2 " mid point, structure grain ConstructVector4; If the angle 2. between OuterVector_EF and ConstructVector4 is less than or equal to 90 degree, then retain " Split.2 " opposite side curved surface.
Step 9, execution " Blend " order, between " Split.1 " and " Split.2 ", tangent line continuous transition curved surface is generated by " Intersection.1 " and " Intersection.2 ", choose " Trimfirst support " and " Trim second support " check box, as shown in Figure 5, " Blend.1 " feature is obtained;
Step 10, execution " Extract " order, Propagation type is set to TangentContinuity, selects medial surface, as shown in Figure 6, obtains " Extract.1 " feature;
Step 11, execution " Split " order, split entity by " Plane.1 ", retains the entity of direction with reference to end face side, obtain " Split.1 " substance feature;
Step 12, execution " Split " order, continue segmentation " Split.1 " entity by " Plane.1 ", retains the entity of direction reference end face opposite side, realize the object of delete entity;
Step 13, obtain the bottom line of " Blend.1 " feature, concrete steps are as follows:
1. defining bottom line is CATLISTP (CATBaseUnknown) BottomLineList, the element list defined in following steps, and unless otherwise noted, its type is all CATLISTP (CATBaseUnknown); 2. travel through all surface elements in " Blend.1 ", extract the outer shroud border FaceBoundaryLineList of each surface element, all FaceBoundaryLineList are added list BoundaryLineList; 3. travel through all line elements in BoundaryLineList, multiplicity is the outer shroud border that the set of the line element of 1 is " Blend.1 ", is defined as OuterLoop; 4. travel through all line elements in OuterLoop, extract any limit that distance web surface is nearest, be defined as NearestLine; 5. in OuterLoop, NearestLine is got rid of, NearestLine is added list BottomLineList; 6. travel through all line elements in BottomLineList, extract two topological points of each line element, all topology points are added list BoundaryVertexList; 7. all topological points in BoundaryVertexList are traveled through, multiplicity is the frontier point list that the set of the topology point of 1 is BottomLineList, be defined as OuterVertexList, element number in OuterVertexList is generally 2, be defined as VertexSide1 and VertexSide2, calculated the outer tangent line of VertexSide1 and VertexSide2 in BottomLineList respectively: OuterTangentVector1 and OuterTangentVector2; 8. travel through all line elements in OuterLoop, extract and wherein distinguish tangent continuous print line element with BottomLineList at VertexSide1 and VertexSide2 place, by it adds BottomLineList respectively, and respectively it is deleted in OuterLoop; 9. step 6 is repeated, until can not find in OuterLoop with BottomLineList till the tangent continuous print line element in VertexSide1 or VertexSide2 place.10. perform " Join " order, engage BottomLineList, as shown in Figure 7, obtain " Join.2 " feature;
Step 14, execution " Extrapolate " order, extend " Blend.1 " feature in " Join.2 " feature place extrapolation, as shown in Figure 8, obtain " Extrapolate.1 " feature;
Step 15, execution " Split " order, by " Extrapolate.1 " segmentation " Extract.1 ", retain the main part of " Extract.1 ", obtain " Split.3 " feature, by " Split.3 " segmentation " Extrapolate.1 ", retain the main part of " Extrapolate.1 ", obtain " Split.4 " feature, as shown in Figure 9;
Step 16, execution " Shape Fillet " order, create the fillet of " Split.3 " and " Split.4 ", choose " Trim support 1 " and " Trim support 2 " check box, reference direction selects OuterVector_IS and OuterVector_B, as shown in Figure 10, " Fillet.1 " feature is obtained;
Step 17, execution " Thick Surface " order, thicken " Fillet.1 " curved surface, generate entity, be net result, as shown in figure 11.
Claims (1)
1. aviation sheet metal part extrudate sink a creation method, based on a multi-purpose computer and airplane design software CATIA, creates the step that aviation sheet metal part extrudate sink as follows:
1.1, define: the sheet metal part sunk before creating is connected to form by web, flange and transition base angle, web and flange are plane, both angle α=45 ° ~ 135 °, transition base angle is circular shape, web is tangentially connected with an edge at transition base angle, and flange is tangentially connected with another edge at transition base angle; Sinking of creating is made up of blanketed zone (7), zone of transition (8), blanketed zone, base angle (9) and base angle zone of transition (6);
The geometric element of the sheet metal part 1.2, before the sagging establishment of mark: web upper surface (1) is labeled as BottomPlane; Medial surface (2) is labeled as InnerSideList; End face (3) is labeled as RefEndFace; Require create collapsed position reference planes (4) and be labeled as PosRefPlane according to trim designs, this plane requires vertical with flange medial surface with web upper surface;
1.3, recall on a general-purpose computer sink create before the mathematical model of sheet metal part, the sagging standard design parameter of input in mathematical model: input transition district 8 length (L), the sagging degree of depth (Depth), L and Depth requires according to trim designs and navigation mark HB 0-22-2008 obtains standard parameter value;
1.4, biased PosRefPlane obtains plane, and offset or dish is L, is labeled as: OffsetPlane, and concrete steps are:
1.4.1, obtain the outer normal direction of RefEndFace, be labeled as: OuterVector_EF;
1.4.2, be biased PosRefPlane plane, offset or dish is L;
1.4.3, with PosRefPlane initial point to OffsetPlane initial point, structure grain ConstructVector1;
If the angle 1.4.4 between OuterVector_EF and ConstructVector1 is less than or equal to 90 degree, then by OffsetPlane reverse bias;
1.5, biased InnerSideList obtains screw rotor, and offset or dish is Depth, is labeled as: OffsetSurface, and concrete steps are:
1.5.1, obtain the outer normal direction of InnerSideList, be labeled as: OuterVector_IS;
1.5.2, be biased InnerSideList curved surface, offset or dish is Depth;
1.5.3, with InnerSideList mid point to OffsetSurface mid point, structure grain ConstructVector2;
If the angle 1.5.4 between OuterVector_IS and ConstructVector2 is more than or equal to 90 degree, then by OffsetSurface reverse bias;
1.6, OffsetSurface and PosRefPlane asks friendship, and intersection is labeled as: IntersectCurve1;
1.7, split OffsetSurface by IntersectCurve1, reservation face is labeled as: RemainFace1, and concrete steps are:
1.7.1, OffsetSurface is split by IntersectCurve1;
1.7.2, with IntersectCurve1 mid point to RemainFace1 mid point, structure grain ConstructVector3;
If the angle 1.7.3 between OuterVector_EF and ConstructVector3 is more than or equal to 90 degree, then retain RemainFace1 opposite side curved surface;
1.8, InnerSideList and OffsetPlane asks friendship, and intersection is labeled as: IntersectCurve2;
1.9, split InnerSideList by IntersectCurve2, reservation face is labeled as: RemainFace2, and concrete steps are:
1.9.1, InnerSideList is split by IntersectCurve2;
1.9.2, with IntersectCurve2 mid point to RemainFace2 mid point, structure grain ConstructVector4;
If the angle 1.9.3 between OuterVector_EF and ConstructVector4 is less than or equal to 90 degree, then retain RemainFace2 opposite side curved surface;
1.10, add fillet surface between RemainFace1 and RemainFace2, if G0 is continuous, then needs to add round-corner transition respectively at IntersectCurve1 and IntersectCurve2 place, if G1 is continuous, then do not need.Whole fillet surface is labeled as: ConnectFace;
1.11, in conjunction with RemainFace1, RemainFace2 and ConnectFace, JoinFace is labeled as;
1.12, in entity, tangent continuous expansion medial surface obtains face list, is labeled as: TanFaceList;
1.13, use PosRefPlane to split deletion one side entity, continue to use PosRefPlane segmentation to delete opposite side entity;
1.14, JoinFace and TanFaceList creates fillet, and be labeled as BottomCornerList, concrete steps are:
1.14.1, obtain a series of tangent continuous print line nearest from web surface in JoinFace, hereinafter referred to as bottom line, be labeled as BottomLineList, concrete steps are:
1.14.1.1, travel through all surface elements in JoinFace, extract the outer shroud border FaceBoundaryLineList of each surface element, all FaceBoundaryLineList are added list BoundaryLineList;
1.14.1.2, all line elements in traversal BoundaryLineList, multiplicity is the outer shroud border that the set of the line element of 1 is JoinFace, is defined as OuterLoop;
1.14.1.3, travel through all line elements in OuterLoop, extract the limit that distance web surface is nearest, be defined as NearestLine;
1.14.1.4, in OuterLoop NearestLine is deleted, and NearestLine is added list BottomLineList;
1.14.1.5, travel through all line elements in BottomLineList, extract two topological points of each line element, all topology points are added list BoundaryVertexList;
1.14.1.6, all topological points in BoundaryVertexList are traveled through, multiplicity is the frontier point list that the set of the topology point of 1 is BottomLineList, be defined as OuterVertexList, element number in OuterVertexList is generally 2, be defined as VertexSide1 and VertexSide2, calculated the outer tangent line of VertexSide1 and VertexSide2 in BottomLineList respectively: OuterTangentVector1 and OuterTangentVector2;
1.14.1.7, travel through all line elements in OuterLoop, extract and wherein distinguish tangent continuous print line element with BottomLineList at VertexSide1 and VertexSide2 place, added BottomLineList respectively, and delete in OuterLoop;
1.14.1.8, step 1.14.1.5 is repeated, until can not find in OuterLoop with BottomLineList till the tangent continuous print line element in VertexSide1 or VertexSide2 place;
1.14.2, by JoinFace extend along BottomLineList extrapolation, be labeled as ExtraJoinFace;
1.14.3, by ExtraJoinFace to TanFaceList partition, cutting, retain the main part in TanFaceList, be labeled as: TanFaceSplit;
1.14.4, by TanFaceSplit to ExtraJoinFace partition, cutting, retain the main part in ExtraJoinFace, be labeled as: ExtraJoinSplit;
1.14.5, between ExtraJoinSplit and TanFaceSplit generate fillet, radius of corner is panel beating base angle radius, and result is BottomCornerList;
1.15, all curved surfaces are thickened, generate entity, be net result.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105046035A (en) * | 2015-09-14 | 2015-11-11 | 沈阳飞机工业（集团）有限公司 | Sheet metal part sagging compensation design method |
| CN106372279A (en) * | 2016-08-22 | 2017-02-01 | 中国航空工业集团公司西安飞机设计研究所 | Extruded profile mark screening method |
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| CN105046035A (en) * | 2015-09-14 | 2015-11-11 | 沈阳飞机工业（集团）有限公司 | Sheet metal part sagging compensation design method |
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| CN106709984B (en) * | 2016-11-29 | 2020-06-30 | 中国航空工业集团公司沈阳飞机设计研究所 | Three-dimensional modeling method for L-shaped extruded section with fitting surface being complex curved surface |
| CN107145643A (en) * | 2017-04-14 | 2017-09-08 | 东南大学 | The intelligent design system and design method of a kind of metal plate sculpture type face steelframe |
| CN107145643B (en) * | 2017-04-14 | 2020-07-17 | 东南大学 | Intelligent design system and design method for sheet metal sculpture profile steel frame |
| CN110909415A (en) * | 2018-09-14 | 2020-03-24 | 上海红阳密封件有限公司 | Preparation method of guide slot assembly gauge based on CATIA software |
| CN113510187A (en) * | 2021-04-29 | 2021-10-19 | 中国航发北京航空材料研究院 | Method and device for improving sinking forming quality of metal thin-wall section |
| CN113378318A (en) * | 2021-06-24 | 2021-09-10 | 成都飞机工业（集团）有限责任公司 | Shape design method of special wrench for complex space |
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