CN115958323A - Metal plate welding method for open type rectifying support plate assembly - Google Patents
Metal plate welding method for open type rectifying support plate assembly Download PDFInfo
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- CN115958323A CN115958323A CN202211447511.9A CN202211447511A CN115958323A CN 115958323 A CN115958323 A CN 115958323A CN 202211447511 A CN202211447511 A CN 202211447511A CN 115958323 A CN115958323 A CN 115958323A
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Abstract
The invention discloses a plate welding method of an open type rectifying support plate assembly, which comprises the steps of firstly pre-bending a plate for forming a rectifying support plate into a V-shaped part, and then butt-welding the opening end of the V-shaped part to form an intermediate part with two open ends in the length direction and a closed circumference, wherein the length of the intermediate part is greater than the final design length of the rectifying support plate, and the two end areas in the length direction of the intermediate part are used as two reserved areas; then selecting one of two reserved areas of the middleware, and carrying out flanging treatment along the outline edge of the tail end of the reserved area; then, inserting a male die into the circumferential closed inner cavity of the intermediate piece, and performing contour correction including plastic deformation on the intermediate piece; then, according to the size of the tail section of the support plate, cutting out the edge of the rectification support plate with the length corresponding to that of the tail section of the support plate from the unreserved region of the intermediate part, and butt-welding the tail section of the support plate and the rectification support plate along the edge; and finally, cutting and removing the flanging and the other reserved areas on the intermediate piece according to the overall dimension of the rectifying support plate. The forming method can improve the forming precision of the rectification support plate assembly.
Description
Technical Field
The invention belongs to the technical field of plate welding, and particularly relates to a plate welding process method of an open type rectifying support plate assembly.
Background
As shown in figure 1, the cross section of the engine rectifying support plate assembly is in a streamline shape, the assembly is formed by welding a rectifying support plate 1 and a support plate tail section 2, the rectifying support plate 1 is a sheet metal formed part, the material thickness is 0.8mm, the profile surface profile degree is 0.2, and the support plate tail section 2 is an machined part.
The traditional main forming process of the rectifying support plate in the current industry is as follows: the sheet material is pre-bent into a V shape, then the die shown in figure 2 is adopted for profiling, an opening part is sleeved on a male die, then the opening part and the male die are placed in a female die together, the die is closed for forming, then the mould shown in figure 3 is adopted, the upper edge, the lower edge and the opening edge are cut, and the profile degree of the moulding surface is checked according to the mould.
However, because the rectification extension board is open structure, the part can not fully produce plastic deformation during the die mould, profile Y coordinate variation value is little in addition, the profile change is mild, influence the plastic deformation during part shaping, and cut edge, the type child of inspection configuration is gone on under the restraint state, part material thickness is little, so part profile degree inspection distortion, actually there is great elastic deformation, during later stage and extension board back end 2 butt joint, the direction that figure 1 shows is kick-backed along rectification extension board 1, the latter half, the opening limit is kick-backed downwards, past kick-backing in the middle of it, the comprehensive influence profile, actual part is unqualified, lead to later stage and extension board back end to weld unqualifiedly. After the rectification support plate 1 and the support plate tail section 2 are welded, a sealing part is formed, under the action of the support plate tail section 2, rigidity is enhanced, the re-correction difficulty is high, in addition, the space is narrow and small, almost correction cannot be carried out, the problems exist consistently from the development, and great difficulty is caused to the processing of a turbine support assembly in the later period.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a plate welding method of an open type rectifying support plate assembly, which ensures the forming precision of the rectifying support plate.
The basic principle of the invention is as follows: the length dimension (namely the length of the neutral layer) of the rectifying support plate before correction along the molded surface is properly reduced, the opening of the pre-formed rectifying support plate is subjected to butt welding to form a closed part, and correction is performed from the inner cavity of the rectifying support plate in the later period, so that plastic deformation is generated, and the profile degree of the molded surface is ensured. In addition, the material is lengthened along both ends of the length direction of the inner cavity of the rectification support plate, and the middle part of the formed part of the rectification support plate is cut according to the size of the welding joint of the tail section of the support plate after forming to form the size matched with the welding joint of the tail section of the support plate. And finally, welding the rectifying support plate and the tail section of the support plate, and then cutting redundant material parts.
The basic idea of the invention is as follows: after the V-shaped intermediate piece is pre-bent, butt welding the V-shaped opening end of the rectifying support plate to enable the rectifying support plate to form a closed part; two ends of the rectification support plate are lengthened along the length direction (Z-axis direction, namely perpendicular to XY plane in figure 1) of the inner cavity of the rectification support plate, a notch at one end of the rectification support plate is flanged, a process blank holder is provided for the rectification support plate of a later-stage closed structure, and a solid male die is designed to be corrected from the inner cavity of the rectification support plate, so that plastic deformation is generated, and the profile degree of a molded surface is ensured. And cutting the middle part of the molded part of the rectification support plate according to the size of the welding joint of the tail section of the support plate after molding to form the size matched with the welding joint of the tail section of the support plate. And cutting redundant process edges after the rectification support plate and the tail section of the support plate are welded.
The invention adopts the following technical scheme:
the plate welding method of the open type rectifying support plate component comprises the following steps,
pre-bending a sheet material for forming a rectifying support plate into a V-shaped part, and then butt-welding the open end of the V-shaped part to form an intermediate piece with two open ends in the length direction and a closed circumference, wherein the length of the intermediate piece is greater than the final design length of the rectifying support plate, and the two end regions in the length direction of the intermediate piece are used as two reserved regions;
selecting one of two reserved areas of the middleware, and performing flanging treatment along the outline edge of the tail end of the reserved area;
inserting a male die into the circumferential closed inner cavity of the intermediate piece, and performing contour correction including shaping deformation on the intermediate piece;
cutting out an edge of the rectifying support plate and the support plate tail section with a corresponding length from the non-reserved area of the intermediate piece according to the size of the support plate tail section, and butt-welding the support plate tail section and the rectifying support plate along the edge;
and step five, cutting and removing the flanging and the other reserved areas on the intermediate piece according to the overall dimension of the rectifying support plate.
Further, in the first step, the length of the neutral layer of the rectifying support plate before the rectifying support plate is pre-bent into the V-shaped part is calculated according to the elongation of the plate material for forming the rectifying support plate and the length of the neutral layer of the molded surface of the rectifying support plate after forming in the design drawing, then, the length of the neutral layer is shortened on the basis of the length of the neutral layer, and the shortened length of the neutral layer is used as the length of the plate material before the V-shaped part is pre-bent.
Further, in the second step, one of the two reserved areas of the intermediate piece is selected, notches are formed along the contour edges at the tail ends of the reserved areas, and then the contour edges with the notches are turned over one by one.
And further, in the third step, pressing the flanging, and performing contour degree correction including plastic deformation on the intermediate piece by driving a male die and a female die to be closed through a hydraulic machine.
Compared with the prior art, the traditional forming method of the rectifying support plate is changed, the opening end is directly welded to form the closing part after the plate material is preformed, then correction with plastic deformation is carried out from the inside of the closing cavity, when the profile meets the requirement, the edge with the size consistent with that of the tail section of the support plate is cut out to be used as the welding edge, then the tail plate of the support plate is butt-welded, and finally the final rectifying support plate assembly is obtained by cutting redundant edges. The forming method can ensure that the profile degree of the rectifying support plate component meets the requirement, and improves the forming precision of the rectifying support plate component.
Drawings
FIG. 1 is a schematic view of the structure of the fairing support plate assembly and the deformation of the fairing support plate assembly when preformed into a V-shaped configuration in accordance with the present invention;
FIG. 2 is a schematic view of a profiled rectifying support plate according to the present invention;
FIG. 3 is a schematic diagram of the contour inspection and cutting of the rectifying support plate in the present invention;
FIG. 4 is a schematic view of a rectification support plate with two ends lengthened and an opening welded to form a closed cavity and a slot after preforming;
FIG. 5 is a schematic view of flanging at the groove after the rectifying support plate is preformed;
FIG. 6 is a schematic view of a mold for shaping and correcting a rectifying support plate by flanging according to the present invention;
in the figure, 1-rectification support plate, 2-tail section of support plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
As shown in figure 1, the cross section of the engine rectifying support plate assembly is in a streamline shape, the assembly is formed by welding a rectifying support plate 1 and a support plate tail section 2, the rectifying support plate 1 is a sheet metal formed part, the material thickness is Smm, the profile surface profile degree is f, the support plate tail section 2 is an machined part, and the length L1 of a support plate profile neutral layer is larger than that of the support plate.
In order to ensure the forming precision of the rectifying support plate 1 and the profile contour degree of the molded surface meets the requirements of a drawing, the invention is realized by the following technical scheme:
(1) According to the elongation delta (unit%) of the plastic deformation material, the elongation is converted into the length L of the neutral layer when the rectifying support plate 1 is preformed 0 ，δ＝(L 1 -L 0 )/L 0 ，L 0 ＝L 1 V (1 + δ), finally determining the length Δ of the profile exact retraction, which isThe continuous shaping and correction provides support.
(2) Preformed and formed according to the conventional process forming scheme (as shown in figure 1), namely bent into a V shape.
(3) And (5) butt welding the opening.
(4) Two ends of the rectification support plate 1 are respectively lengthened in the length direction of the inner cavity (the Z-axis direction in figures 4 and 5). The two ends are lengthened for three purposes, one purpose is to reserve enough allowance for subsequent cutting, the other purpose is to reserve a part with more uniform plastic deformation in the middle, cut off the part with non-uniform deformation at the two ends, and the other purpose is to process flanging. One of the elongated ends is provided with a plurality of notches with the length of 15mm and the width of 2 mm-4 mm, as shown in figure 4.
(5) And (5) flanging. The grooved edge is turned up as shown in fig. 5.
(6) The die shown in figure 6 is configured, and comprises a female die, a male die, a retainer plate and the like, parts are assembled in the male die of the die, the retainer plate moves upwards under the action of an ejection cylinder, so that a flanging serving as a process edge is supported by the retainer plate, the female die is driven by a hydraulic machine to move downwards, a rectifying support plate 1 is pressed to be downward as a flanging whole of the process edge, and then the die is withdrawn to finish part sizing.
(7) The molded rectifying support plate 1 is inspected for the profile f of the surface of the support plate, the middle of the rectifying support plate 1 is cut according to a design drawing (the cutting is carried out along a dotted line in fig. 4, but the opening welding seam of the rectifying support plate 1 cannot be completely cut off, and can be partially cut off, so that the rectifying support plate 1 is still in a closed state and the length of the rectifying support plate 1 is equal to that of the tail section 2 of the support plate), and a butt welding joint with the tail section 2 of the support plate is formed.
(8) The rectification support plate 1 and the support plate tail section 2 are in butt welding.
(9) And cutting the process edges at the two lengthened ends of the rectification support plate 1 according to a design drawing.
As shown in figure 1, the cross section of the engine rectifying support plate assembly is in a streamline shape, the assembly is formed by welding a rectifying support plate 1 and a support plate tail section 2, the rectifying support plate 1 is a sheet metal formed part, the material thickness is 0.8mm, the profile surface profile degree is 0.2, and the support plate tail section 2 is an machined part. Length L of neutral layer of profile of rectifying support plate 1 1 =241.4mm, material GH1035.
The invention is applied to solve the problem of forming the rectification support plate component as follows:
1. the length L of the neutral layer of the rectifying support plate 1 in the design drawing is used 1 Based on the material handbook, the elongation delta of GH1035 in plastic deformation is approximately equal to 2 percent, and is converted into the length L of the neutral layer in preforming the rectifying support plate 1 0 ，δ＝(L 1 -L 0 )/L 0 ，L 0 ＝L 1 And/(1 + delta) = 241.4/(1+2%) ≈ 236.7, and then the length of the plate material neutral layer for preforming the rectifying support plate 1 is obtained after the molded surface distance retraction length delta =0.5mm, namely the plate material size after the molded surface length of the rectifying support plate 1 is shortened.
2. Preformed and formed according to the conventional process forming scheme (as shown in figure 1).
3. And (5) butt welding the opening.
4. Two ends of the rectification support plate 1 are respectively lengthened along the length direction of the inner cavity (Z-axis direction in fig. 5), wherein one lengthened end is provided with a plurality of notches which are 15mm long and 2 mm-4 mm wide, as shown in fig. 4.
5. And (7) flanging. As shown in fig. 4 and 5, the notched edges are turned over.
6. The die shown in figure 6 is configured, and comprises a female die, a male die, a retainer plate and the like, parts are assembled in the male die of the die, the retainer plate moves upwards under the action of an ejection cylinder, so that a flanging serving as a process edge is supported by the retainer plate, the female die is driven by a hydraulic machine to move downwards, a rectifying support plate 1 is pressed to be downward as a flanging whole of the process edge, and then the die is withdrawn to finish part sizing.
7. Checking the profile degree of the molded surface of the rectification support plate 1 of the molded rectification support plate 1, and judging the molded surface to be qualified if the molded rectification support plate 1 is not more than 0.2 mm; the molded rectifying support plate 1 is cut in the middle according to a design drawing (the cutting is carried out along a dotted line in fig. 4, but the opening welding seam of the rectifying support plate 1 cannot be completely cut off, and can be partially cut off, so that the rectifying support plate 1 is still in a closed state and is equal to the length of the tail section 2 of the support plate), and a butt welding joint with the tail section 2 of the support plate is formed.
8. And (3) butt welding the rectifying support plate 1 and the support plate tail section 2.
9. And cutting the process edges at the two lengthened ends of the rectification support plate 1 according to a design drawing.
Those skilled in the art will appreciate that the invention may be practiced without these specific details. Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all matters of the invention which utilize the inventive concepts are protected.
Claims (4)
1. The plate welding method of the open type rectification support plate component is characterized in that: comprises the following steps of (a) preparing a solution,
pre-bending a plate material for forming a rectifying support plate into a V-shaped part, and then butt-welding the opening end of the V-shaped part to form an intermediate part with two open ends in the length direction and a closed circumference, wherein the length of the intermediate part is greater than the final design length of the rectifying support plate, and the two end areas in the length direction of the intermediate part are used as two reserved areas;
selecting one of two reserved areas of the middleware, and performing flanging treatment along the outline edge of the tail end of the reserved area;
inserting a male die into the circumferential closed inner cavity of the intermediate piece, and performing contour correction including shaping deformation on the intermediate piece;
cutting out an edge of the rectifying support plate and the support plate tail section with a corresponding length from the non-reserved area of the intermediate piece according to the size of the support plate tail section, and butt-welding the support plate tail section and the rectifying support plate along the edge;
and step five, cutting and removing the flanging and the other reserved areas on the intermediate piece according to the overall dimension of the rectifying support plate.
2. The method of claim 1, wherein the method comprises: in the first step, the length of the neutral layer of the rectifying support plate before the rectifying support plate is pre-bent into a V-shaped part is calculated according to the elongation of the plate used for forming the rectifying support plate and the length of the neutral layer of the molded surface of the rectifying support plate after forming in the design drawing, then, one length is shortened on the basis of the length of the neutral layer, and the shortened length of the neutral layer is used as the length of the plate before the rectifying support plate is pre-bent into the V-shaped part.
3. The method of claim 1, wherein the method comprises: in the second step, one of the two reserved areas of the middle piece is selected, a notch is formed along the outline edge at the tail end of the reserved area, and then the outline edge with the notch is turned over one by one.
4. The method of claim 1, wherein the method comprises: and in the third step, pressing the flanging, and performing contour degree correction including plastic deformation on the intermediate piece by driving a male die and a female die to be closed through a hydraulic machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211447511.9A CN115958323A (en) | 2022-11-18 | 2022-11-18 | Metal plate welding method for open type rectifying support plate assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211447511.9A CN115958323A (en) | 2022-11-18 | 2022-11-18 | Metal plate welding method for open type rectifying support plate assembly |
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| CN115958323A true CN115958323A (en) | 2023-04-14 |
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| CN202211447511.9A Pending CN115958323A (en) | 2022-11-18 | 2022-11-18 | Metal plate welding method for open type rectifying support plate assembly |
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- 2022-11-18 CN CN202211447511.9A patent/CN115958323A/en active Pending
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