CN104765936A - Operation method of three-dimensional modeling expansion and lofting coordinate generation based on Autodesk inventor software - Google Patents
Operation method of three-dimensional modeling expansion and lofting coordinate generation based on Autodesk inventor software Download PDFInfo
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Abstract
The invention relates to an operation method of three-dimensional modeling expansion and lofting coordinate generation based on Autodesk inventor software. The method at least comprises the following steps that S01, a two-dimensional rough draft is built; S02, a three-dimensional curved surface is built; S03, trimming is performed; S04, thickening is performed; S05, expansion is performed; S06, lofting coordinates are extracted. The method has the advantages that the expanded view repeated drawing and lofting procedures are reduced after the operation method is adopted, automation of the discharging process of a numerically controlled cutting machine is achieved, the manufacturing precision is high, product performance is stable, the cost is reduced, economic benefits are improved, and the labor cost is reduced by 3% based on manual lofting time cost.
Description
Technical field
The invention belongs to machinery manufacturing technology field, be specifically related to a kind of for shaping launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate of steel bifurcated, spiral case and ell.
Background technology
The steel bifurcated of the spiral case of traditional hydraulic turbine, ell and penstock system, mostly adopts steel plate to roll the manufacture method of welding forming; Its common ground is: merogenesis is more, changes of section, complex structure, making need stretch-out view quantity more and loaded down with trivial details.
Because above-mentioned steel bifurcated, spiral case and ell all belong to sheet metal class roll forming part, by blanking, roll, spelling, be welded into the golden structural member of global shape; Its technological process is as follows:
The first, expansion setting-out: according to designing the bifurcated pipe build figure that provides, or spiral case, ell line chart, setting-out section by section, the plane outspread drawing drawing out each single-unit and setting-out coordinate parameters table;
The second, plate cutting: by stretch-out view and two-dimensional coordinate parameter list data, carries out coding input numerical control cutting machine control program cutting stock; Adopt during artificial blanking and first single-unit stretch-out view is made into sheet iron full-page proof, then on steel plate, draw cutting stock after full pattern; Cut out the operations such as internode bevel for welding;
Three, roll arc: the plate adopting plate bending rolls to prepare, roll into corresponding single-unit (or piecemeal tile) shape and size;
Four, single-unit and overall pre-assembled: if piecemeal tile first spelling, spot welding, be adjusted to single-unit pipe, again spelling integrally shape, adjustment, welding, inspection, examination successively;
Five, decompose anticorrosion transport: in factory after pre-assembled acceptance(check), larger pipe fitting needs parting and supporting, and disintegrate into the sections or tile being convenient to transport, after preservative treatment, assembly welding is shaping to be again transported to scene.
Drawn by above-mentioned technological process, the key of its manufacturing process is: effectively adjust and Control Welding Process when accurate, the single-unit pipe of single-unit stretch-out view or tile roll the correct of radian and single-unit, overall package.But its complex structure, makes the stretch-out view quantity needed more and loaded down with trivial details.And according to designing the line chart of bifurcated pipe build figure, spiral case and ell provided, how accurately, method that is easy, that obtain stretch-out view quickly becomes a difficult point.
Existing conventional technology has: graphing method, mathematical formulae computing method, the making software law of procedure, the transformation of graphics software program grafting, 3D software Automatic-expanding method, use the broad categories of software.Not yet propose a kind of three-dimensional modeling simultaneously meeting bifurcated pipe, spiral case, ell shaping in prior art to launch and generate setting-out to sit calibration method.
Wherein, Autodesk inventor software is a machine design drawing software of autodesk, inc. of U.S. exploitation, and this software can create three-dimensional model and two-dimensional engineering graphic.The three-dimensional linear produced based on digital driving and position constraint function or curved surface, solid model is converted into by giving different materials, model is made to have attribute in kind and mechanical property, and then carry out simulating cutting and assembling, motion simulation, stress analysis etc., be a comprehensive software for multipurpose use.In the deployed state, setting does not generate the concrete operation method of setting-out coordinate parameters table.In addition, the establishing method of this Software Create three-dimensional model comprises stretching, rotation, setting-out, scan and spiral scans, and setting-out order can be adopted to launch for spiral case, ell; And for penstock system steel bifurcated rely on intersecting surface position location panel beating assembly, directly cannot obtain the shape and size of lower section, also not provide concrete setting-out method of operating.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of and launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate.
The present invention is achieved by the following technical solutions:
Launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, at least comprising the steps:
S01: set up two-dimentional sketch; Open Autodesk inventor software, newly-built first file Sheet Metal.ipt also enters panel beating pattern, generates part two dimension sketch, save as basic sketch, close the first file after completing two-dimentional sketch after being imported by part design drawing;
S02: set up three-dimension curved surface; Newly-built second file Sheet Metal.ipt, is converted to part status after entering two-dimentional sketch state, imports sketch based on part design drawing and uses;
Draw the front upper projection straight line below of cutting sth. askew of part according to basic sketch, complete the sketch drafting of part;
Enter three-dimensional state, part cut sth. askew front upper below the mid point of projection straight line draw two assist three-dimensional straight lines respectively, set up a two dimensional surface by two straight lines, obtain part and to cut sth. askew the position of front upper and lower plane;
To cut sth. askew the newly-built two-dimentional sketch of front upper and lower plane at part, draw end points and the mid point of top and bottom projection straight line according to projection; Draw full circle or circular arc, set up restriction relation, the two-dimentional sketch of preservation after completing by the end points of the constraint tool and projection and mid point; Open model environment afterwards, clicked the top and bottom semi-circular line obtained by setting-out order, generate conical surface;
S03: prune; Newly-built three-dimensional sketch, by crossing with the conical surface generated in S02 for the line of cutting sth. askew on the basic sketch generated in S01, obtains scarf position curve; By partition tools pruning, Delete superfluous curved surface, generate the conical surface after cutting sth. askew;
S04: thicken; According to diameter and the thickness of slab setting thickening thickness direction of part design drawing, obtain the solid model of part by thickening instrument;
S05: launch; In panel beating pattern, obtained the unfolding state figure of part by expansion instrument;
S06: extract setting-out coordinate; After obtaining the deployed condition of part, a newly-built two-dimentional sketch in expansion plane, the outline line of projection expansih, makes a fabrication hole central point at projection line end points and completes sketch; Make fabrication hole according to fabrication hole central point, along several holes of curve total length array, the outline line shape after setting-out is followed the tracks of, completes and preserve; New construction figure, calls in unfolding state figure in engineering drawing, displaing coordinate in the parameter list of hole; By editing, deleting hole parameter to hole parameter list, only retain center point coordinate value, complete setting-out coordinate parameters and extract.
Under software panel beating environment, the precondition of panel beating setting-out setting is cross section in two Different Plane and curve.Method of operating of the present invention is applicable to the steel bifurcated class part not providing intersecting surface shape and size; And for spiral case class part and elbow pipe part, in its design drawing, provided cross sections shape and size, directly project top and bottom straight line, adopts this method of operating generating three-dimensional figures shape; By arranging material, layout parameter, and generate corresponding tube coupling model by panel beating lofting tools, and above-mentioned S03, S04 step need not be carried out.
Described technical scheme is preferably, and in described S02, is set to circular arc after drawing full circle by cutting implement.
Described technical scheme is preferably, and in described S02, under the condition of the size and dimension of described top and bottom, simulates the curved surface before not being cut by known conditions.
Described technical scheme is preferably, described known conditions is tangent circle, the sideline of circular cone of cutting sth. askew, one in center line.
Described technical scheme is preferably, in described S06, after obtaining the deployed condition of part, by the outline line arrangement technology hole to expansion, outline line shape after setting-out is followed the tracks of, to portal coordinate parameters table at engineering drawing state automatic marking, edited setting-out coordinate and extracted; Unfolding state figure is called in engineering drawing with the ratio of 1:1, saves as dwg formatted file, also can carry out size marking and extract setting-out coordinate parameters in Auto CAD software.
The present invention does the plane projection of vertical and center line to curved surface with the position line of intersecting surface, and the intersecting surface curve that curved surface produces cutting is sheared.In unfolding state figure, curved surface diameter, sheet metal thickness, curved surface thicken direction, there is directly impact, change above-mentioned arbitrary parameter and all can produce different results the solid model generated and unfolding state figure.Need to determine according to the cut direction of setting-out diameter, position while welding and groove.
Compared with prior art, superior effect of the present invention is: adopt three-dimensional modeling of the present invention to launch and decrease stretch-out view after generating the method for operating of setting-out coordinate and repeat to draw and setting-out operation, and realize the robotization of numerical control cutting machine blanking process, and manufacturing accuracy is high, properties of product are stablized, economic benefit is improve while reducing costs, calculate with artificial setting-out time cost, reduce cost of labor 3%.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of method of operating of the present invention;
Fig. 2 is for adopting the design drawing of the embodiment of method of operating described in Fig. 1;
Fig. 3 is the setting-out surface chart of the design drawing of Fig. 2;
Fig. 4 is the surface chart after Fig. 3 cuts sth. askew;
Fig. 5 is the shaping solid model figure of Fig. 4;
Fig. 6 is the unfolding state figure of Fig. 5 solid model figure;
Fig. 7 is the fabrication hole distribution plan of Fig. 6 unfolding state figure.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
As shown in Figure 1, of the present inventionly launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, comprising the steps:
S01: set up two-dimentional sketch; Open Autodesk inventor software, newly-built first file Sheet Metal.ipt also enters panel beating pattern, generates part two dimension sketch, save as basic sketch, close the first file after completing two-dimentional sketch after being imported by part design drawing; Described part design drawing as shown in Figure 2, is the single-unit cut sth. askew in Steel Y-pipe with Crescent Rib three face.
S02: set up three-dimension curved surface; As shown in Figure 3, newly-built second file Sheet Metal.ipt, is converted to part status after entering two-dimentional sketch state, and based on the part design drawing of importing Steel Y-pipe with Crescent Rib, sketch uses.
Draw the front upper projection straight line below of cutting sth. askew of part according to basic sketch, complete the sketch drafting of Steel Y-pipe with Crescent Rib setting-out single-unit; Enter three-dimensional state, single-unit cut sth. askew front upper below the mid point of projection straight line draw two assist three-dimensional straight lines respectively, set up a two dimensional surface by two straight lines, obtain part and to cut sth. askew the position of front upper and lower plane.
To cut sth. askew the newly-built two-dimentional sketch of front upper and lower plane at part, draw end points and the mid point of top and bottom projection straight line according to projection; Draw full circle or circular arc, set up restriction relation, the two-dimentional sketch of preservation after completing by the end points of the constraint tool and projection and mid point; Open the setting-out order of model state afterwards, click the top and bottom semi-circular line obtained, generate half-conical curved surface, as shown in Figure 3.
S03: prune; Newly-built three-dimensional sketch, by crossing with the conical surface generated in S02 for the line of cutting sth. askew on the basic sketch generated in S01, obtains scarf position curve; By partition tools pruning, Delete superfluous curved surface, generate the conical surface after cutting sth. askew, as shown in Figure 4.
S04: thicken; According to diameter and the thickness of slab setting thickening thickness direction of part design drawing, obtain the solid model of part by thickening instrument, as shown in Figure 5.
S05: launch; In panel beating pattern, obtained the unfolding state figure of part by expansion instrument, as shown in Figure 6.
S06: extract setting-out coordinate; After obtaining the deployed condition of part, a newly-built two-dimentional sketch in expansion plane, the outline line of projection expansih, makes a fabrication hole central point at projection line end points and completes sketch; Make fabrication hole according to fabrication hole center pit, along several holes of curve total length array, the outline line shape after setting-out is followed the tracks of, completes and preserve; New construction figure, calls in unfolding state figure in engineering drawing, marks all fabrication holes, displaing coordinate in the parameter list of hole; By editing, deleting hole parameter to hole parameter list, only retain center point coordinate value, complete setting-out coordinate parameters and extract, as shown in Figure 7.
Engineering drawing being deposited copy is dwg formatted file, can realize automatic blanking by after the program of dwg formatted file input numerical control cutting machine.
When concrete operations, contour projection, straight flange end points lower in Fig. 7 is set to central point, carry out brill fabrication hole, described fabrication hole is diameter is 0.02mm, the degree of depth is the flat-bottom hole of 0.5mm, and selection matrix array instrument, arranges according to length of curve decile, by fabrication hole along outline line total length decile, complete the operation in outline line cloth hole.Give setting-out coordinate parameters simultaneously, as shown in table 1.
Table 1 setting-out coordinate parameters table
After completing single part model, be saved to " folding mode " in software and carry out overall assembling test; Carry out creating all material object parts models according to method of operating of the present invention, after completing, check and correction coordinate carries out spelling, checks whether abutment joint interferes, and verifies the correctness of single entity model stretch-out view.Owing to there is the impact of thickness of slab, according to the requirement of design weld seam, determine the deployment diameter of curved surface and the thickening direction of plate.In addition, the operation of machining cutting cut is also carried out if desired until complete block mold.
In March, 2011, repeatedly setting-out test is carried out in the making of metallic structure factory of No.11 Engineering Bureau, Chian Water Conservancy and Hydropower to Zambia Ka Liba power station spiral case ell, the stretch-out view parameter that mutual comparison distinct methods obtains, and stretch-out view shape verification in proportion, make the inspection of scale down mock-up, finally demonstrate and adopt Autodesk inventor software three-dimensional modeling launch and generate the reliability of the method for operating of setting-out coordinate.Adopt the spiral case ell of this method of operating manufacture to be successfully applied to north, Zambia Ka Liba power station bank unit, this unit is in generator operation smoothly on November 28th, 2013.
The present invention is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present invention, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into scope of the present invention.
Claims (5)
1. launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, it is characterized in that, at least comprise the steps:
S01: set up two-dimentional sketch; Open Autodesk inventor software, newly-built first file Sheet Metal.ipt also enters panel beating pattern, generates part two dimension sketch, save as basic sketch, close the first file after completing two-dimentional sketch after being imported by part design drawing;
S02: set up three-dimension curved surface; Newly-built second file Sheet Metal.ipt, is converted to part status after entering two-dimentional sketch state, imports sketch based on part design drawing and uses;
Draw the front upper projection straight line below of cutting sth. askew of part according to basic sketch, complete the sketch drafting of part;
Enter three-dimensional state, part cut sth. askew front upper below the mid point of projection straight line draw two assist three-dimensional straight lines respectively, set up a two dimensional surface by two straight lines, obtain part and to cut sth. askew the position of front upper and lower plane;
To cut sth. askew the newly-built two-dimentional sketch of front upper and lower plane at part, draw end points and the mid point of top and bottom projection straight line according to projection; Draw full circle or circular arc, set up restriction relation, the two-dimentional sketch of preservation after completing by the end points of the constraint tool and projection and mid point; Open model environment afterwards, clicked the top and bottom semi-circular line obtained by setting-out order, generate conical surface;
S03: prune; Newly-built three-dimensional sketch, by crossing with the conical surface generated in S02 for the line of cutting sth. askew on the basic sketch generated in S01, obtains scarf position curve; By partition tools pruning, Delete superfluous curved surface, generate the conical surface after cutting sth. askew;
S04: thicken; According to diameter and the thickness of slab setting thickening thickness direction of part design drawing, obtain the solid model of part by thickening instrument;
S05: launch; In panel beating pattern, obtained the unfolding state figure of part by expansion instrument;
S06: extract setting-out coordinate; After obtaining the deployed condition of part, a newly-built two-dimentional sketch in expansion plane, the outline line of projection expansih, makes a fabrication hole central point at projection line end points and completes sketch; Make fabrication hole according to fabrication hole center pit, along several holes of curve total length array, the outline line shape after setting-out is followed the tracks of, completes and preserve; New construction figure, calls in unfolding state figure in engineering drawing, displaing coordinate in the parameter list of hole; By editing, deleting hole parameter to hole parameter list, only retain center point coordinate value, complete setting-out coordinate parameters and extract.
2. according to claim 1ly launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, it is characterized in that, in described S02, after drawing full circle, being set to circular arc by cutting implement.
3. according to claim 1ly launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, it is characterized in that, in described S02, under the condition of the size and dimension of described top and bottom, simulate the curved surface before not being cut by known conditions.
4. according to claim 3ly launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, it is characterized in that, described known conditions is tangent circle, the sideline of circular cone of cutting sth. askew, one in center line.
5. according to claim 1ly launch based on Autodesk inventor software three-dimensional modeling and generate the method for operating of setting-out coordinate, it is characterized in that, in described S06, after obtaining the deployed condition of part, by the outline line arrangement technology hole to expansion, outline line shape after setting-out is followed the tracks of, to portal coordinate parameters table at engineering drawing state automatic marking, edited setting-out coordinate and extracted; Unfolding state figure is called in engineering drawing with the ratio of 1:1, saves as dwg formatted file, also can carry out size marking and extract setting-out coordinate parameters in Auto CAD software.
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| CN111899346A (en) * | 2020-07-16 | 2020-11-06 | 天津理工大学 | Mathematical modeling method of controllable porous bone tissue engineering scaffold |
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| CN113486414A (en) * | 2021-07-31 | 2021-10-08 | 中电建十一局工程有限公司 | Method for obtaining accurate manufacturing process diagram of flow surface horizontal steel bifurcated pipe through three-dimensional modeling |
| CN115091550A (en) * | 2022-05-31 | 2022-09-23 | 安徽省众望科希盟科技有限公司 | Expanded polytetrafluoroethylene die-cut piece forming method and system, electronic equipment and medium |
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