CN102601194A - Molded surface compensation method of large stamping die aiming at deflection deformation of press machine - Google Patents
Molded surface compensation method of large stamping die aiming at deflection deformation of press machine Download PDFInfo
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- CN102601194A CN102601194A CN2012100701515A CN201210070151A CN102601194A CN 102601194 A CN102601194 A CN 102601194A CN 2012100701515 A CN2012100701515 A CN 2012100701515A CN 201210070151 A CN201210070151 A CN 201210070151A CN 102601194 A CN102601194 A CN 102601194A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 7
- 208000004350 Strabismus Diseases 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000012916 structural analysis Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 abstract 3
- 238000005520 cutting process Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/062—Press plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention relates to a molded surface compensation method aiming at deflection deformation of a press machine. The molded surface compensation method is characterized in that the method comprises the specific steps of: firstly obtaining a deflection distribution map of the press machine; determining the deformation of the molded surface of the die, and in the molded surface design stage of a drawing or flanging forming type stamping die, adopting mapping deformation compensation in a same (reverse) direction with the deflection deformation of a worktable of the press machine for the upper (lower) molded surface, wherein the compensation range is the contour of a terrace die deflecting 0.1mm inwards and the compensation refers to the deflection distribution map of the press machine. Whole deformation compensation treatment of the molded surface of die is driven by plane deformed mapping and applies a plane deformed mapping to drive the molded surface of the die to deform as a whole to obtain a compensated molded surface of the die. The invention can reduce the manual study quantity of a bench worker to a great extent during die debugging.
Description
Technical field
The present invention relates to a kind of die face compensation method, belong to large stamping die manufacturing technology field to the forcing press deflection deformation.
Background technology
Current, along with the automotive type shortening of update time, the manufacturing cycle and the workmanship of automobile diel are also had higher requirement.But in the die production process; The performance of the mould that most of digital control processings put in place fully on forcing press can not be satisfactory, and the dynamic fit precision of die face is relatively poor, like accompanying drawing 1; Therefore carry out a large amount of manual advanced study and training adjustment with regard to unavoidable, thereby take the long production cycle.
Summary of the invention
The purpose of this invention is to provide a kind of die face compensation method to the forcing press deflection deformation; The diel profile bulk deformation compensation that it utilizes forcing press amount of deflection distribution map to carry out; Be that distortion situation when forcing press is worked is reflected on the mould structure, and carry out corresponding deflection deformation compensation; Can promote even distribution, the manual advanced study and training amount of minimizing pincers worker, the shortening production cycle in diel matched moulds gap when work, improve die quality.
Technical scheme of the present invention is achieved in that a kind of die face compensation method to the forcing press deflection deformation, it is characterized in that concrete step is following:
1) obtain forcing press amount of deflection distribution map: different forcing presses all has corresponding amount of deflection distribution map under different working pressure, like accompanying drawing 2.Forcing press amount of deflection distribution map is to adopt the Generative structural analysis module of Structure Design Software Catia to carry out static simulation analysis acquisition.1. according to actual pressure machine lower table size drawing three-dimensional figure in Catia software.2. the press bench boundary condition is set: the workbench material is a cast iron, and the workbench bottom surface is fixed, and the scope that applies operating pressure is in the press bench 2/3L size; The force value size adopts 2000t, 1600t, 1200t, 1000t, 800t, 600t.3. obtain the amount of deflection distribution map: adopt Structure Design Software Catia to calculate the amount of deflection distribution map that obtains the forcing press lower table respectively according to above different working force value; After this amount of deflection distribution map is preserved with the 3dxml file format; Operating pressure size in the time of can working according to actual mould is inserted among the Sheet Metal Forming Technology figure, is used for confirming the die face deflection.
2) confirm the die face deflection: the amount of deflection distribution map that step 1) is obtained is inserted among the Sheet Metal Forming Technology figure; Confirm the press bench deflection value of mold center position and mould punch outline line position respectively, the difference that two values are subtracted each other acquisition is the deflection of die face.
3) drive the die face distortion: in Structure Design Software Catia with the punch outline line of the mould 0.1mm that squints to the inside; As the distortion boundary line; And this boundary line projected on the plane vertical with pressing direction; On this plane, fit out with reference to curved surface simultaneously, this inboard, boundary line with reference to curved surface is a deformed region, and the outside is fixed; Then with press bench face center as the maximum distortion point, with step 2) deflection that obtains is that reference value drives above-mentioned surf deform and obtains target face, with reference to curved surface to serve as the distortion reference, the target curved surface is for the distortion target, and is as shown in Figure 3 at last.Drive the die face bulk deformation, the die face after obtaining to compensate.
Good effect of the present invention is a utilization plane deformation mapped actuation die face bulk deformation; Die face after obtaining to compensate; Improve the dynamic fit precision when diel profile part is worked on forcing press, reduced the manual advanced study and training amount of pincers worker, shortened die manufacturing cycle.
Description of drawings
Fig. 1 is that die bottom plate is with press bench deflection deformation sketch map.
Fig. 2 is the deflection deformation distribution map under certain forcing press operating pressure.
Fig. 3 drives the curved surface sketch map for deflection deformation.
Fig. 4 is certain 2000t forcing press lower table structure chart.
Fig. 5 applies scope for operating pressure.
Fig. 6 is the workbench deflection deformation cloud atlas under the different operating pressure.
Fig. 7 is certain vehicle hair net outside plate product model.
Fig. 8 is certain vehicle hair net outside plate stretch pressing artwork.
Fig. 9 is certain vehicle hair net outside plate punch outline line position on the amount of deflection distribution map.
Figure 10 draws profile for after certain vehicle hair net outside plate cutting.
Figure 11 is the die face after certain vehicle hair net outside plate compensation.
Figure 12 is that the profile offset deviation is analyzed cloud atlas before and after certain vehicle hair net outside plate distortion.
Figure 13 is certain vehicle beam product model.
Figure 14 is certain vehicle beam stretch pressing artwork.
Figure 15 is certain vehicle beam punch outline line position on the amount of deflection distribution map.
Figure 16 draws profile for after certain vehicle beam cutting.
Figure 17 is the die face after certain vehicle beam compensation.
Figure 18 is that the profile offset deviation is analyzed cloud atlas before and after certain vehicle beam distortion.
Figure 19 is certain vehicle flooring product model.
Figure 20 is certain vehicle floor stretch pressing artwork.
Figure 21 is certain punch outline line position on the amount of deflection distribution map, vehicle floor.
Figure 22 draws profile for after certain vehicle floor cutting.
Figure 23 is the die face after certain vehicle floor compensation.
Figure 24 is that the profile offset deviation is analyzed cloud atlas before and after certain vehicle floor deformation.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description:
Forcing press amount of deflection distribution map adopts the Generative structural analysis module of Structure Design Software Catia to carry out static simulation and analyzes acquisition, and its concrete steps are following:
1. according to actual pressure machine lower table size drawing three-dimensional figure in Structure Design Software Catia, be illustrated in figure 4 as certain 2000t forcing press lower table structure chart.
2. the press bench boundary condition is set: the workbench material is a cast iron; The workbench bottom surface is fixed; The scope that applies operating pressure is in the press bench 2/3L size, shown in Fig. 5 hatching; The force value size adopts 2000t, 1600t, 1200t, 1000t, 800t, 600t to calculate respectively.
3. obtain the amount of deflection distribution map: calculate the amount of deflection distribution map that obtains the forcing press lower table respectively according to the different working force value, as shown in Figure 6.After this amount of deflection distribution map was preserved with the 3dxml file format, the pressure size in the time of can working according to actual mould was inserted among the Sheet Metal Forming Technology figure, was used for confirming the die face deflection.
Embodiment 1
Certain vehicle hair net outside plate product model is as shown in the figure 7, and its corresponding stretch pressing artwork is as shown in Figure 8, and the working pressure machine is 2000t, and operating pressure is 800t.The concrete operations step is following:
1. 2000t forcing press corresponding workbench amount of deflection distribution map under the 800t operating pressure is assembled among Fig. 8; And according to the position of punch outline line on the amount of deflection distribution map of mould; The depression amount of deflection of confirming the outline line position is 0.65mm, and mold center's depression amount of deflection is 0.99mm, and is as shown in Figure 9.Two values are subtracted each other 0.99-0.65=0.34 and are the profile deflection of this hair net drawing die under this operating mode.
2. the punch outline line 0.1mm that squints to the inside, it is shown in figure 10 to adopt this shift wheel profile cutting to draw profile simultaneously.
3. the shift wheel profile is projected on the xoy plane vertical with pressing direction, fit out simultaneously with reference to curved surface.Adopt convex-concave distortion order to make the target curved surface, notice that deflection is-0.34mm that it is ordered as follows:
The curved surface that is out of shape: with reference to curved surface,
Restrictive curve: shift wheel profile projection line,
Center of deformation: the forcing press center,
Deformation direction: pressing direction,
Deformation distance :-0.34mm.
In addition, because vehicle exterior cladding element is as the high A level curved surface of quality requirement, in certain surface smoothness after noting distortion in the deformation-compensated making.Therefore, need carry out fairing processing to the target curved surface, continuous with profile curvature after guaranteeing the final distortion that obtains, satisfy instructions for use (annotating:, can omit the surface smoothing step) for the less demanding profile of surface quality such as internal covering part.
4. with reference to curved surface to serve as the distortion reference, the target curved surface is the distortion target, and direction is selected pressing direction, orders as follows:
The curved surface that is out of shape: draw profile after the cutting,
With reference to curved surface: with reference to curved surface,
The target curved surface: the target curved surface,
The parcel type: have direction,
Direction: pressing direction,
Drive the die face bulk deformation, the die face after obtaining to compensate is shown in figure 11.
5. the profile of drawing before will being out of shape is carried out variance analysis with distortion back profile, obtains offset deviation and analyzes cloud atlas, and is shown in figure 12.
6. the die profile of process data is replaced with the die face after deformation-compensated, it is motionless that the punch profile keeps, reach the centre of mould under Light Condition press, all around sky open do not wait gap situation.The equally distributed state in dynamic matched moulds gap when final realization mould is worked on forcing press.
Embodiment 2
Certain vehicle beam product model is as shown in the figure 13, and the working pressure machine is 800t, and operating pressure is 500t, and corresponding stretch pressing artwork is shown in figure 14.
The deformation-compensated concrete operations step of profile is following:
1. 800t forcing press corresponding workbench amount of deflection distribution map under the 500t operating pressure is assembled among Figure 14; And according to the position of punch outline line on the amount of deflection distribution map of mould; The depression amount of deflection of confirming the outline line position is 0.16mm, and mold center's depression amount of deflection is 0.26mm, and is shown in figure 15.Two values are subtracted each other 0.26-0.16=0.10 and are the profile deflection under this operating mode.
2. the punch outline line 0.1mm that squints to the inside, it is shown in figure 16 to adopt this shift wheel profile cutting to draw profile simultaneously.
3. the shift wheel profile is projected on the xoy plane vertical with pressing direction, fit out simultaneously with reference to curved surface.Adopt convex-concave distortion order to make the target curved surface, notice that deflection is-0.10mm that it is ordered as follows:
The curved surface that is out of shape: with reference to curved surface,
Restrictive curve: shift wheel profile projection line,
Center of deformation: the forcing press center,
Deformation direction: pressing direction,
Deformation distance :-0.1mm.
4. with reference to curved surface to serve as the distortion reference, the target curved surface is the distortion target, and direction is selected pressing direction, orders as follows:
The curved surface that is out of shape: draw profile after the cutting,
With reference to curved surface: with reference to curved surface,
The target curved surface: the target curved surface,
The parcel type: have direction,
Direction: pressing direction.
Drive the die face bulk deformation, the die face after obtaining to compensate is shown in figure 17.
5. the profile of drawing before will being out of shape is carried out variance analysis with distortion back profile, obtains offset deviation and analyzes cloud atlas, and is shown in figure 18.
6. the die profile of process data is replaced with the die face after deformation-compensated, it is motionless that the punch profile keeps, and accomplishes the deformation-compensated process of die face.
Embodiment 3
Certain vehicle flooring product model is as shown in the figure 19, and the working pressure machine is 1000t, and operating pressure is 700t, and corresponding stretch pressing artwork is shown in figure 20.The deformation-compensated concrete operations step of profile is following:
1. 1000t forcing press corresponding workbench amount of deflection distribution map under the 700t operating pressure is assembled among Figure 20; And according to the position of punch outline line on the amount of deflection distribution map of mould; The depression amount of deflection of confirming the outline line position is 0.2mm, and mold center's depression amount of deflection is 0.52mm, and is shown in figure 21.Two values are subtracted each other 0.52-0.2=0.32 and are the profile deflection under this operating mode.
2. the punch outline line 0.1mm that squints to the inside, it is shown in figure 22 to adopt this shift wheel profile cutting to draw profile simultaneously.
3. the shift wheel profile is projected on the xoy plane vertical with pressing direction, fit out simultaneously with reference to curved surface.Adopt convex-concave distortion order to make the target curved surface, notice that deflection is-0.32mm that it is ordered as follows:
The curved surface that is out of shape: with reference to curved surface,
Restrictive curve: shift wheel profile projection line,
Center of deformation: the forcing press center,
Deformation direction: pressing direction,
Deformation distance :-0.32mm.
4. with reference to curved surface to serve as the distortion reference, the target curved surface is the distortion target, and direction is selected pressing direction, orders as follows:
The curved surface that is out of shape: draw profile after the cutting,
With reference to curved surface: with reference to curved surface,
The target curved surface: the target curved surface,
The parcel type: have direction,
Direction: pressing direction.
Drive the die face bulk deformation, the die face after obtaining to compensate is shown in figure 23.
5. the profile of drawing before will being out of shape is carried out variance analysis with distortion back profile, obtains offset deviation and analyzes cloud atlas, and is shown in figure 24.
6. the die profile of process data is replaced with the die face after deformation-compensated, it is motionless that the punch profile keeps, the deformation-compensated end of die face.
Claims (1)
1. die face compensation method to the forcing press deflection deformation is characterized in that concrete step is following:
1) obtain forcing press amount of deflection distribution map: forcing press amount of deflection distribution map is to adopt the Generative structural analysis module of Structure Design Software Catia to carry out static simulation analysis acquisition;
1. according to actual pressure machine lower table size drawing three-dimensional figure in Catia software;
2. the press bench boundary condition is set: the workbench material is a cast iron; The workbench bottom surface is fixed; The scope that applies operating pressure is in the press bench 2/3L size, and the force value size adopts 2000t, 1600t, 1200t, 1000t, 800t, 600t;
3. obtain the amount of deflection distribution map: adopt Structure Design Software Catia software to calculate the amount of deflection distribution map that obtains the forcing press lower table respectively according to above different working force value; After this amount of deflection distribution map is preserved with the 3dxml file format; Operating pressure size in the time of can working according to actual mould is inserted among the Sheet Metal Forming Technology figure, is used for confirming the die face deflection;
2) confirm the die face deflection: the amount of deflection distribution map that step 1) is obtained is inserted among the Sheet Metal Forming Technology figure; Confirm the press bench deflection value of mold center position and mould punch outline line position respectively, the difference that two values are subtracted each other acquisition is the deflection of die face;
3) drive the die face distortion: in Structure Design Software Catia with the punch outline line of the mould 0.1mm that squints to the inside; As the distortion boundary line; And this boundary line projected on the plane vertical with pressing direction; On this plane, fit out with reference to curved surface simultaneously, this inboard, boundary line with reference to curved surface is a deformed region, and the outside is fixed; Then with press bench face center as the maximum distortion point; With step 2) deflection that obtains is that reference value drives above-mentioned surf deform and obtains target face; At last with reference to curved surface to serve as the distortion reference; The target curved surface drives the die face bulk deformation for the distortion target, the die face after obtaining to compensate.
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| CN201210070151.5A CN102601194B (en) | 2012-03-16 | 2012-03-16 | Molded surface compensation method of large stamping die aiming at deflection deformation of press machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448199A (en) * | 2013-08-30 | 2013-12-18 | 苏州圣美特压铸科技有限公司 | Die-casting machine with L-shaped racks |
| CN105458145A (en) * | 2015-12-30 | 2016-04-06 | 无锡透平叶片有限公司 | Centrosymmetric titanium alloy structural member mold compensation structure and method |
| CN111347219A (en) * | 2018-12-22 | 2020-06-30 | 力博重工科技股份有限公司 | Deformation compensation process method for large-scale sheet welding part |
| CN113591167A (en) * | 2021-06-21 | 2021-11-02 | 瑞鹄汽车模具股份有限公司 | Stamping deformation compensation method of press |
| CN113836663A (en) * | 2021-09-26 | 2021-12-24 | 成都普什汽车模具有限公司 | Method for acquiring elastic deformation compensation value of working table of automobile mould press |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103448199A (en) * | 2013-08-30 | 2013-12-18 | 苏州圣美特压铸科技有限公司 | Die-casting machine with L-shaped racks |
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| CN105458145A (en) * | 2015-12-30 | 2016-04-06 | 无锡透平叶片有限公司 | Centrosymmetric titanium alloy structural member mold compensation structure and method |
| CN111347219A (en) * | 2018-12-22 | 2020-06-30 | 力博重工科技股份有限公司 | Deformation compensation process method for large-scale sheet welding part |
| CN111347219B (en) * | 2018-12-22 | 2021-10-22 | 力博重工科技股份有限公司 | Deformation compensation process method for large-scale sheet welding part |
| CN113591167A (en) * | 2021-06-21 | 2021-11-02 | 瑞鹄汽车模具股份有限公司 | Stamping deformation compensation method of press |
| CN113836663A (en) * | 2021-09-26 | 2021-12-24 | 成都普什汽车模具有限公司 | Method for acquiring elastic deformation compensation value of working table of automobile mould press |
| CN113836663B (en) * | 2021-09-26 | 2023-11-21 | 成都普什汽车模具有限公司 | Method for obtaining elastic deformation compensation value of automobile mold press worktable |
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Effective date of registration: 20170418 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Co-patentee after: FAW Mould Manufacturing Co., Ltd. Patentee after: China FAW Group Corporation Address before: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Patentee before: China FAW Group Corporation |