CN215697396U - Universal base used during skin stretch forming - Google Patents
Universal base used during skin stretch forming Download PDFInfo
- Publication number
- CN215697396U CN215697396U CN202121951583.8U CN202121951583U CN215697396U CN 215697396 U CN215697396 U CN 215697396U CN 202121951583 U CN202121951583 U CN 202121951583U CN 215697396 U CN215697396 U CN 215697396U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- long bottom
- supporting
- hinges
- width
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A universal base used in skin stretch forming belongs to the field of process equipment design. Comprises a workbench, a lower hinge, a rotating shaft, an upper hinge, a long bottom plate, a supporting plate and a supporting block. By using the universal base, the inclination angle of the stretch forming die can be gradually adjusted in the forming process of the skin part, so that the stress of the skin part is more uniform, and the optimal forming effect is realized. The general base can also cover the whole working area of the skin stretch-forming machine, and the safety of the skin stretch-forming machine can be effectively guaranteed. Because the inclination angle of the stretch forming die can be adjusted by the universal base, the design of the stretch forming die is indirectly simplified, the optimal die angle does not need to be simulated by simulation software, the structural design can be carried out by adopting the scheme with the lowest die height, and the weight and the processing cost of the die can be reduced.
Description
Technical Field
The utility model relates to a universal base used in skin stretch forming, in particular to a universal base which can realize the adjustment of the inclination angle of a die and ensure the safe operation of skin stretch forming in the skin longitudinal stretch forming process, and belongs to the field of process equipment design.
Background
Aircraft skin parts are the skins of sheet parts and internal structural frames that make up the aerodynamic profile of the aircraft, the most common forming process being skin stretch forming. The equipment used in the skin stretch forming process is a skin stretch forming machine, and the numerical control comprehensive skin stretch forming machine usually provides the required upper jacking force when the skin stretch forming is carried out by 2-3 working tables capable of being lifted independently.
In the longitudinal drawing process of the double-curvature skin, the distance of a workbench of a skin drawing and forming machine is adjusted according to the length of a drawing die, then a steel plate or a wood plate is laid on the workbench, then the drawing die is installed, finally the skin part is drawn and formed, and usually, the skin part is formed by simultaneously jacking a plurality of the workbench.
The traditional skin stretch-forming process cannot obtain the optimal forming effect, because the deformation amount and the deformation force of the skin part in two longitudinal stretching directions are different, according to the optimal stretch-forming process simulated by the simulation software, the inclined angle of the stretch-forming die is gradually adjusted in the skin stretch-forming process. Because the skin stretch-forming die is a rigid casting die, the self-structure fixation does not have the capability of adjusting the inclination angle, and the die inclination can be realized only by a stretch-forming machine or other devices. The skin inclined stretch forming must be carried out under the safe condition, and the stretch forming die must be stably connected with a workbench of the stretch forming machine, so that the stretch forming die is prevented from moving under the unexpected condition. The fixing device of the one-side worktable and the drawing die can not be removed in order to realize the inclination of the drawing die.
A large distance exists between a plurality of working tables of the skin stretch-forming machine, a very large gap exists in a working area of the equipment, and potential safety hazards of falling of articles and personnel exist. Therefore, after the distance between the working platform and the working platform is adjusted, the whole steel plate or the whole wood plate needs to be laid, and even if the drawing die is directly connected with the working platform, the steel plate needs to be laid in a working area which is not covered by the drawing die (the width of the drawing die is smaller than that of the working area) to fill the gap. After the steel plate or the wood plate is laid, although the safety can be ensured, the adjustment of the inclination angle of the drawing die is influenced.
Therefore, in order to achieve the best process effect of skin stretch forming, a certain device needs to be added between the stretch forming die and the skin stretch forming machine workbench, so that the inclination angle of the stretch forming die can be adjusted, and the safety of the skin stretch forming process can be ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a general base which can gradually adjust the inclination angle of a stretch forming die and improve the operation safety of stretch forming of a skin in the process of longitudinal stretch forming of the skin.
The universal base used in skin stretch forming comprises a workbench 1, a lower hinge 2, a rotating shaft 3, an upper hinge 4, a long bottom plate 5, a supporting plate 6 and a supporting block 7.
The width of the universal base is not less than that of the area where the workbench 1 is located, so that the universal base is ensured to cover the working area of the stretch-forming machine;
the long bottom plate 5 is in a middle filling form or a middle non-filling form;
when the long bottom plate 5 is in the form of intermediate filling: and ensuring that the width of the outer edge of the long bottom plate 5 is not less than the width of the area where the covering stretch-forming machine workbench 1 is located after assembly. The long bottom plate 5 is divided into an upper layer and a lower layer, the width of the upper layer of the long bottom plate 5 is equal to the length of the lower layer of the long bottom plate 5, the length direction of the corresponding lower layer of the long bottom plate 5 is fixed with the width direction of the upper layer of the long bottom plate 5, a supporting block 7 is arranged on the upper layer of the long bottom plate 5, and the supporting block 7 is vertically connected with the long bottom plate 5 to limit the width after length assembly. The supporting block 7 is connected with the long bottom plate 5 through a countersunk screw 9 and is positioned through a pin 10. The universal base is provided with at least two groups of hinges, and each group of hinges comprises a lower hinge 2, a rotating shaft 3 and an upper hinge 4; the lower hinge 2 and the upper hinge 4 are connected through a rotating shaft 3, and the axial direction of the rotating shaft 3 is the same as the length direction of the supporting block 7; the upper hinge 4 is connected with the lower long bottom plate 5 through a bolt 11 and a nut 12, and the lower hinge 2 is connected with the workbench 1 through a T-shaped groove bolt 13; in two adjacent groups of hinges, round holes are formed in the two groups of lower hinges 2, waist-shaped holes are formed in one group of upper hinges 4, and round holes are formed in the other group of upper hinges 4, so that the rotating shaft 3 can slide in the waist-shaped holes in the working process. The top of general base sets up backup pad 6, and backup pad 6 below links to each other with upper long bottom plate 5 through supporting shoe 7, links to each other through countersunk screw 9 between backup pad 6 and the supporting shoe 7, and backup pad 6 top is connected with drawing shape mould 8, and backup pad 6 periphery is greater than drawing shape mould 8 to be equipped with the fixed draw-in groove that draws shape mould 8 of clamping.
When the long bottom plate 5 is in the form of an intermediate unfilled: and ensuring that the width of the outer edge of the long bottom plate 5 is not less than the width of the area where the covering stretch-forming machine workbench 1 is located after assembly. The long bottom plate 5 is a layer, the long bottom plate 5 is provided with a supporting block 7, and the supporting block 7 is vertically connected with the long bottom plate 5 to limit the width of the long bottom plate after being assembled. The supporting block 7 is connected with the long bottom plate 5 through a countersunk screw 9 and is positioned through a pin 10. The universal base is provided with at least two groups of hinges, and each group of hinges comprises a lower hinge 2, a rotating shaft 3 and an upper hinge 4; the lower hinge 2 is connected with the upper hinge 4 through a rotating shaft 3, the axial direction of the rotating shaft 3 is the same as the length direction of the supporting block 7, the upper hinge 4 is connected with the long bottom plate 5 through a bolt 11 and a nut 12, and the lower hinge 2 is connected with the workbench 1 through a T-shaped groove bolt 13; in two adjacent groups of hinges, round holes are formed in the two groups of lower hinges 2, waist-shaped holes are formed in one group of upper hinges 4, and round holes are formed in the other group of upper hinges 4, so that the rotating shaft 3 can slide in the waist-shaped holes in the working process. The top of general base sets up backup pad 6, and backup pad 6 below links to each other with long bottom plate 5 through supporting shoe 7, links to each other through countersunk screw 9 between backup pad 6 and the supporting shoe 7, and 6 tops of backup pad are connected with drawing shape mould 8, and 6 peripheries of backup pad are greater than drawing shape mould 8 to be equipped with the fixed draw-in groove that draws shape mould 8 of clamping.
Furthermore, the outer edge of the supporting plate 6 can be adjusted, the supporting plates 6 which are combined to be used are adopted, the mounting positions are adjustable and are respectively connected to the supporting blocks 7, the connecting hole positions on the supporting blocks 7 are fixed, and a plurality of groups of connecting holes are formed in each supporting plate 6 and are used for adapting to the drawing dies 8 with different overall dimensions.
Further, the width of the U-shaped groove of the lower hinge 2 connected to the table 1 must be the same as the width of the T-shaped groove of the table 1. Four stepped guide pins with the diameter equal to the width of the U-shaped groove are designed. The axes of rotation 3 of the two sets of hinges must be parallel.
Furthermore, the support plate 6 of the universal base is a part directly connected with the stretch-forming die 8, and long waist-shaped through holes need to be arranged on the support plate 6 and are distributed on the periphery of the stretch-forming die 8 after installation, so that multipoint fixing of the stretch-forming die 8 is realized. Furthermore, the support plate 6 is provided with detachable limiting blocks which are distributed near four corners of the drawing die 8. The waist-shaped through hole, the limiting block and the mounting hole on the supporting plate 6 are designed in a matched mode.
Furthermore, each component and part of the universal base needs to have higher processing precision, and numerical control equipment is adopted for processing. And processing is carried out through the three-dimensional data set, and the size relation of the three-dimensional data set is ensured. Positioning pins are designed among all the connecting pieces (except the supporting plates) to ensure the mutual position relationship.
The utility model has the beneficial effects that: by using the universal base, the inclination angle of the stretch forming die can be gradually adjusted in the forming process of the skin part, so that the stress of the skin part is more uniform, and the optimal forming effect is realized. The general base can also cover the whole working area of the skin stretch-forming machine, and the safety of the skin stretch-forming machine can be effectively guaranteed. Because the inclination angle of the stretch forming die can be adjusted by the universal base, the design of the stretch forming die is indirectly simplified, the optimal die angle does not need to be simulated by simulation software, the structural design can be carried out by adopting the scheme with the lowest die height, and the weight and the processing cost of the die can be reduced.
Drawings
Fig. 1 is a design diagram of a first solution, a middle filling long bottom plate structure, wherein (a) is a front view, and (b) is a top view.
Fig. 2 is a design diagram of a second scheme without filling the middle of the long bottom plate structure, wherein (a) is a front view, and (b) is a top view.
Fig. 3 is a structural design diagram of a first solution, a middle filling tilting rotation device, wherein (a) is a front view and (b) is a side view.
Fig. 4 is a structural design diagram of a second embodiment of the tilting device without filling the middle, wherein (a) is a front view and (b) is a side view.
FIG. 5 is a schematic view of the mounting of the support plate I (drawing die: 5700X 1600mm), wherein (a) is a front view and (b) is a top view.
FIG. 6 is a view showing the mounting of the support plate II (drawing die: 4600X 1600mm), wherein (a) is a front view and (b) is a top view.
FIG. 7 is a schematic view showing the mounting of the supporting plate III (drawing die: 4700X 2200mm), wherein (a) is a front view and (b) is a plan view.
FIG. 8 is a schematic view of the mounting of the support plate IV (drawing die: 4700X 2000mm) wherein (a) is a front view and (b) is a plan view.
Fig. 9 is a two-dimensional schematic diagram of the universal base and the drawing die after installation, wherein (a) is a front view, (b) is a side view, and (c) is a top view.
FIG. 10 is a three-dimensional schematic view of the universal base and the drawing die after installation.
In the figure: 1, a workbench; 2, a lower hinge; 3 a rotating shaft; 4, an upper hinge; 5, a long bottom plate; 6, supporting plates; 7 a supporting block; 8, drawing a shape die; 9 countersunk head screws; 10 pins; 11, bolts; 12 a nut; 13T-slot bolt.
Detailed Description
When the skin part is longitudinally stretched, the requirement that the stretching die 8 can gradually adjust the inclination angle is realized by virtue of the height difference of the workbench 1 of the skin stretching machine, so that a universal base with a hinge type connection is needed and is simultaneously connected with the workbench 1 and the stretching die 8. In order to ensure the safety of the skin stretch-forming process, the universal base needs to cover the working area of the stretch-forming machine, namely, the area of the workbench 1 is ensured to be covered. Therefore, the width of the universal base should be no less than the width of the area where the table 1 is located. In order to ensure that the universal base has universality and can meet the fixing requirements of the drawing dies 8 with different overall dimensions, the universal base is provided with a movable supporting plate 6 with an adjustable mounting position. Before the drawing die 8 is installed, the installation position of the support plate 6 is adjusted according to the outer dimension of the drawing die 8.
1. Structural design of long bottom plate
The long bottom plate 1 is an intermediate structure of a general base, and can fill a working area of the skin stretch-forming machine besides a connection effect, so that the safety of the skin stretch-forming process is ensured. Two or three metal plates which are as long as possible are selected, and the width of the outer edge of the assembled metal plates is not smaller than the width of the area where the skin stretch-forming machine workbench 1 is located (the width of a single plate is not enough). The long bottom plate 5 can adopt two schemes: scheme one is intermediate filling; and the second scheme is that the middle part is not filled. The two schemes have little influence on safety, and the second scheme can cover the area which is not filled in the middle by the drawing die 8. However, the design of the inclined structure is beneficial, and the defects are that the material consumption is large and the weight is heavy. In both schemes, a plurality of supporting blocks 7 are required to be designed above the long bottom plate 5, and the supporting blocks 7 are vertically connected with the long bottom plate 5 to limit the length and the width after assembly. The supporting block 7 and the long bottom plate 5 are connected by a sunk screw 9, and a pin 10 is used for positioning in order to ensure the accurate assembly position. The long bottom plate 5 is designed and structured as shown in figure 1 and figure 2:
2. design of tilt rotation device
The inclination of the universal base is realized by means of the height difference of the workbench 1 of the skin stretch forming machine, so that at least two groups of hinges need to be designed for connection, and each group of hinges is respectively connected with the workbench 1 and the long bottom plate 5. The lower hinge 2 of each group of hinges is connected with the covering stretch forming machine workbench 1 and is provided with a rotating shaft by adopting a cylindrical shaft sleeve. The last hinge 4 and the long bottom plate 5 of hinge are connected, because the horizontal distance of two workstation 1 is unchangeable, consequently after general base slope, the wheel base of two sets of hinges can the grow, so a set of hinge adopts cylinder type axle sleeve, and another group hinge need adopt waist shape hole, guarantees that rotation axis 3 can slide in waist shape hole. For two different schemes: in the first scheme, the middle is filled, and a short shaft supporting long bottom plate can be designed; and in the second scheme, the middle part is not filled, and a long shaft is required to be designed to support the long bottom plate. The design structure of the tilting and rotating device is shown in figures 3 and 4:
3. design of support plate universality
The top of the universal base is connected with a drawing die 8, a supporting plate 6 needs to be designed, the periphery of the supporting plate 6 is slightly larger than the drawing die 8, and a clamping groove for clamping and fixing the drawing die 8 is formed. However, the outer dimensions of the drawing die 8 are different, and the outer edge of the support plate 6 must be adjustable to ensure the versatility of the base. The four combined supporting plates 6 are designed, the mounting positions are adjustable and are respectively connected to the two supporting blocks 6, the connecting hole positions on the supporting blocks 7 are fixed, and each supporting plate 6 is provided with a plurality of groups of connecting holes for adapting to the drawing dies 8 with different overall dimensions. The mounting form of the support plate 6 is shown in fig. 5, 6, 7, 8:
4. other auxiliary designs of universal base
The universal base also needs to guarantee its mounting accuracy, for example: the rotation axes 3 of the two hinge sets must be parallel to meet the requirements of oblique rotation. The lower hinge 2 of the tilting swivel device must be mounted correctly and needs to be designed for the work table 1 of a particular stretching machine. The width of the U-shaped groove formed by connecting the lower hinge 2 and the workbench 1 is required to be consistent with the width of the T-shaped groove of the workbench. Four stepped guide pins with the diameter equal to the width of the U-shaped groove are designed. The universal base is used during installation and used for ensuring the installation accuracy and enabling the rotating shafts of the two hinge groups to be parallel.
A connecting plate is arranged between the upper hinges 4 of the two hinge groups of the universal base and is always connected together, so that the hinge groups can be prevented from rotating automatically due to self weight when the universal base is not in work. As in the scheme of fig. 3, the universal base adopts a middle filling mode, so that the inclined rotating device and the long bottom plate 5 need to be frequently disassembled for convenient installation, and a special connecting plate (a lower long bottom plate) needs to be designed to ensure that two groups of hinges are always connected; in the scheme shown in fig. 4, the universal base adopts a mode of not filling the middle, the inclined rotating device and the long bottom plate 5 do not need to be frequently disassembled, and the connection of the two hinges can be realized by the long bottom plate 5.
The supporting plate 7 of the universal base is a part directly connected with the drawing die 8, and waist-shaped through holes with longer size need to be designed on the supporting plate 7 and can be distributed on the periphery of the drawing die 8 after installation, so that multipoint fixing of the drawing die 8 is realized. In order to ensure the installation accuracy of the drawing die 8, detachable limiting blocks can be further designed on the supporting plate 6 and distributed near four corners of the drawing die 8. Waist-shaped through holes, limiting blocks and mounting holes in the supporting plate 6 can realize the matching design.
5. Manufacture and assembly of universal base
Each component and part of the universal base needs to have higher processing precision and is processed by adopting numerical control equipment. And processing is carried out through the three-dimensional data set, and the size relation of the three-dimensional data set is ensured. Positioning pins are designed among all the connecting pieces (except the supporting plates) to ensure the mutual position relationship.
1. According to scientific research and production tasks, the stretch-forming test of the current fuselage skin parts of the civil aircraft is carried out, the skin parts are 2, and are double-curvature skins, and longitudinal stretch-forming is adopted:
part 1: material designation: 2198-T3S, material specification: 0.125 inches of the total weight of the rubber,
dimensions (clear length x clear width x chord height): 4480X 1506X 242 mm;
part 2: material designation: 2198-T3S, material specification: 0.125 inches of the total weight of the rubber,
dimensions (clear length x clear width x chord height): 4480X 2173X 358 mm.
2. Two sets of drawing dies are designed and manufactured: the external dimension of a drawing die of the part 1 is 4600 multiplied by 1600 multiplied by 400 mm; the external dimension of the part 2 drawing die is 4700X 2200X 550mm, and the part 2 drawing die is structurally designed by adopting the scheme of the lowest die height.
3. The mounting connection hole of the universal base support plate is designed according to the external dimension of the drawing die: the drawing die 8 of the part 1 adopts the installation scheme II of the supporting plate 6 in figure 6; the drawing die 8 of the part 2 uses the mounting scheme iii of the support plate 6 of figure 7.
4. The universal base is manufactured and assembled according to the design and the support plate 6 is assembled according to installation scheme ii of figure 6.
5. Respectively hoisting and installing the universal base and the drawing die 8 of the part 1, and ensuring the stable connection of the universal base and the working platform of the skin drawing machine.
6. And (3) carrying out stretch forming on the part 1, and gradually adjusting the inclination angle of the stretch forming die according to the optimal technological process simulated by the simulation software until the tyre is completely attached.
7. And after the part 1 is drawn, the drawing die 8 is disassembled. And (3) directly adjusting a supporting plate 8 of the universal base on the skin stretch-forming machine workbench 1, and assembling the supporting plate 6 according to the installation scheme III shown in the figure 7. The drawing die 8 of the part 2 is hoisted and mounted.
8. And (3) carrying out stretch forming on the part 2, and gradually adjusting the inclination angle of the stretch forming die 8 according to the optimal technological process simulated by the simulation software until the tyre is completely attached.
9. And disassembling the drawing die 8 and the universal base, and inspecting the fitting degree of the skin part, wherein the fitting clearance of the two test piece skins meets the requirement, so that the next process can be delivered.
Claims (4)
1. The universal base used in skin stretch forming is characterized by comprising a workbench (1), a lower hinge (2), a rotating shaft (3), an upper hinge (4), a long bottom plate (5), a supporting plate (6) and a supporting block (7);
the width of the universal base is not less than that of the area where the workbench (1) is located, so that the universal base is ensured to cover the working area of the stretch-forming machine;
the long bottom plate (5) is in a middle filling form or a middle non-filling form;
when the long bottom plate (5) is in the form of intermediate filling: ensuring that the width of the outer edge of the long bottom plate (5) is not less than the width of the area where the covering stretch forming machine workbench (1) is located after assembly; the long bottom plate (5) is divided into an upper layer and a lower layer, the width of the upper layer long bottom plate (5) is equal to the length of the lower layer long bottom plate (5), the length direction of the corresponding lower layer long bottom plate (5) is fixed with the width direction of the upper layer long bottom plate (5), a supporting block (7) is arranged on the upper layer long bottom plate (5), and the supporting block (7) is vertically connected with the long bottom plate (5) to limit the width after length assembly; the supporting block (7) is connected with the long bottom plate (5) by a sunk screw (9) and is positioned by a pin (10); the universal base is at least provided with two groups of hinges, and each group of hinges comprises a lower hinge (2), a rotating shaft (3) and an upper hinge (4); the lower hinge (2) is connected with the upper hinge (4) through a rotating shaft (3), and the axial direction of the rotating shaft (3) is the same as the length direction of the supporting block (7); the upper hinge (4) is connected with the lower long bottom plate (5) through a bolt (11) and a nut (12), and the lower hinge (2) is connected with the workbench (1) through a T-shaped groove bolt (13); in the two adjacent groups of hinges, the lower hinges (2) of the two groups are provided with round holes, one group of upper hinges (4) is provided with a waist-shaped hole, and the other group of upper hinges (4) is provided with a round hole, so that the rotating shaft (3) can slide in the waist-shaped hole in the working process; the top of the universal base is provided with a supporting plate (6), the lower part of the supporting plate (6) is connected with an upper long bottom plate (5) through a supporting block (7), the supporting plate (6) is connected with the supporting block (7) through a countersunk head screw (9), the upper part of the supporting plate (6) is connected with a drawing die (8), the periphery of the supporting plate (6) is larger than the drawing die (8), and a clamping groove for clamping and fixing the drawing die (8) is arranged;
when the long bottom plate (5) is in a middle unfilled form: ensuring that the width of the outer edge of the long bottom plate (5) is not less than the width of the area where the covering stretch forming machine workbench (1) is located after assembly; the long bottom plate (5) is a layer, a supporting block (7) is arranged on the long bottom plate (5), and the supporting block (7) is vertically connected with the long bottom plate (5) to limit the width of the long bottom plate after length assembly; the supporting block (7) is connected with the long bottom plate (5) by a sunk screw (9) and is positioned by a pin (10); the universal base is at least provided with two groups of hinges, and each group of hinges comprises a lower hinge (2), a rotating shaft (3) and an upper hinge (4); the lower hinge (2) is connected with the upper hinge (4) through the rotating shaft (3), the axial direction of the rotating shaft (3) is the same as the length direction of the supporting block (7), the upper hinge (4) is connected with the long bottom plate (5) through a bolt (11) and a nut (12), and the lower hinge (2) is connected with the workbench (1) through a T-shaped groove bolt (13); in the two adjacent groups of hinges, the lower hinges (2) of the two groups are provided with round holes, one group of upper hinges (4) is provided with a waist-shaped hole, and the other group of upper hinges (4) is provided with a round hole, so that the rotating shaft (3) can slide in the waist-shaped hole in the working process; the top of general base sets up backup pad (6), and backup pad (6) below links to each other with long bottom plate (5) through supporting shoe (7), links to each other through countersunk screw (9) between backup pad (6) and supporting shoe (7), and backup pad (6) top is connected with drawing shape mould (8), and backup pad (6) periphery is greater than drawing shape mould (8) to be equipped with the draw-in groove of the fixed drawing shape mould (8) of clamping.
2. The universal base for skin stretch forming according to claim 1, wherein the outer edge of the supporting plate (6) is adjustable, a plurality of supporting plates (6) are combined for use, the mounting positions are adjustable, the supporting plates (6) are respectively connected to the supporting blocks (7), the connecting holes on the supporting blocks (7) are fixed, and each supporting plate (6) is provided with a plurality of groups of connecting holes for adapting to stretch forming dies (8) with different external dimensions.
3. The universal base for skin stretch forming according to claim 1, wherein the width of a U-shaped groove on the lower hinge (2) connected with the workbench (1) must be consistent with the width of a T-shaped groove on the workbench (1); designing four stepped guide pins with the diameter equal to the width of the U-shaped groove; the axes of rotation (3) of the two sets of hinges must be parallel.
4. The general base used in skin stretch forming according to claim 1, wherein the support plate (6) of the general base is a part directly connected with the stretch forming die (8), a long waist-shaped through hole is required to be arranged on the support plate (6), and the long waist-shaped through hole is distributed on the periphery of the stretch forming die (8) after installation, so that multi-point fixation of the stretch forming die (8) is realized; furthermore, the support plate (6) is provided with detachable limit blocks which are distributed near four corners of the drawing die (8); the waist-shaped through hole, the limiting block and the mounting hole on the supporting plate (6) are designed in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121951583.8U CN215697396U (en) | 2021-08-19 | 2021-08-19 | Universal base used during skin stretch forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121951583.8U CN215697396U (en) | 2021-08-19 | 2021-08-19 | Universal base used during skin stretch forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215697396U true CN215697396U (en) | 2022-02-01 |
Family
ID=79998495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121951583.8U Active CN215697396U (en) | 2021-08-19 | 2021-08-19 | Universal base used during skin stretch forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215697396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664114A (en) * | 2021-08-19 | 2021-11-19 | 沈阳飞机工业（集团）有限公司 | Universal base used during skin stretch forming |
-
2021
- 2021-08-19 CN CN202121951583.8U patent/CN215697396U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664114A (en) * | 2021-08-19 | 2021-11-19 | 沈阳飞机工业（集团）有限公司 | Universal base used during skin stretch forming |
| CN113664114B (en) * | 2021-08-19 | 2024-06-18 | 沈阳飞机工业（集团）有限公司 | Universal base used in skin stretch forming |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215697396U (en) | Universal base used during skin stretch forming | |
| CN107335718A (en) | A kind of autoclave integral panel creep age forming flexible frock | |
| CN203628159U (en) | Quick installation centering apparatus for pedestal of large-scale equipment | |
| CN111055070A (en) | Special mould for assembling tower foot of iron tower | |
| CN202763541U (en) | Vertical lathe tool | |
| CN113664114A (en) | Universal base used during skin stretch forming | |
| CN202540071U (en) | Machine frame of tire grinding machine | |
| CN112692587B (en) | Multi-dimensional machine tool stand column | |
| CN111266444A (en) | High-precision double-rotating-arm stretch bending machine | |
| CN111472482A (en) | Supporting structure for installing artistic stone curtain wall | |
| CN219006696U (en) | Unable adjustment base suitable for different moulds | |
| CN109201829B (en) | A kind of closed large-scale frame structure | |
| CN218926939U (en) | Self-adaptive supporting tool for plane parts | |
| CN220463664U (en) | Die dismounting jig | |
| CN221185409U (en) | Automatic change assembly debugging screw structure | |
| CN218396999U (en) | Milling clamp for processing stop pins in groups | |
| CN212494891U (en) | Double-support bolt die | |
| CN209737075U (en) | Special tool clamp for large stepped shaft and fixed shaft of wind driven generator | |
| CN215240734U (en) | Platform is restoreed to continuous casting machine fan-shaped section | |
| CN221186389U (en) | Multifunctional tool for special-shaped structural part | |
| CN219786674U (en) | Part machining equipment | |
| CN215148092U (en) | Split type structure of gantry surface grinding machine base and stand column | |
| CN220680446U (en) | Sapphire feeding tool | |
| CN214109963U (en) | Novel column-free planogrinder structure | |
| CN220241334U (en) | Electrical assembly table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |