CN116117527A - Processing method for processing thin-wall special-shaped parts of certain types - Google Patents
Processing method for processing thin-wall special-shaped parts of certain types Download PDFInfo
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- CN116117527A CN116117527A CN202211706430.6A CN202211706430A CN116117527A CN 116117527 A CN116117527 A CN 116117527A CN 202211706430 A CN202211706430 A CN 202211706430A CN 116117527 A CN116117527 A CN 116117527A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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Abstract
The invention provides a processing method for processing a thin-wall special-shaped part, which comprises stamping forming, bending forming and splice welding. The thin-wall special-shaped part is characterized in that the special-shaped characteristics of the thin-wall special-shaped part are mainly formed by bending two end heads and a middle section through a simple sheet metal, but the thin-wall special-shaped part has various length specifications. The method comprises the following steps: step one, complex end feature forming, symmetrical forming components, line cutting components and cutting and polishing to remove excessive materials can be completed through a set of stamping forming die; step two, forming middle sections with different length specifications through bending; and thirdly, finishing final forming through welding. The method can finish the processing and manufacturing of certain thin-wall special-shaped parts with various length specifications.
Description
Technical Field
The invention belongs to the technical field of sectional stamping, welding and forming, and particularly relates to a processing method for sectional forming of a special-shaped thin-wall part.
Background
Thin-walled machined parts are widely used in the aerospace field. The invention provides a stamping forming die, and the currently known special-shaped thin-wall parts have different batches of different specifications, and the length control mode is commonly manufactured by adopting a stamping die for customizing and integrally forming in a dividing specification, so that the tooling cost is high.
The whole machine enlarges the sheet material to form small batches of thin-wall special-shaped parts of 5A06, the processing amount is larger, the deformation is easy to occur in the clamping link and the processing link, and the cost is higher. And the die for integral stamping forming is customized, so that the cost is high, the demand of parts is small, and the processing period is long.
Disclosure of Invention
The invention solves the technical problems that: the processing method for processing the thin-wall special-shaped part overcomes the defects of the prior art, realizes the processing of parts with different specifications by sectional forming, reduces the cost and shortens the production period.
The technical scheme of the invention is as follows:
a processing method for processing a thin-wall special-shaped part of a certain type comprises the following steps:
s1, a thin-wall special-shaped part comprises head assemblies at two ends and a connecting part in the middle, wherein the head assemblies at the two ends and the connecting part connected with the head assemblies are directly connected to be used as a stamping part, and a concave-convex die stamping forming is adopted to obtain the stamping part;
s2, dividing the symmetry plane of the stamping part along the axial direction to form two separated head parts, wherein the direction of one head part pointing to the other head part is the axial direction;
s3, obtaining a connecting part left in the middle through bending and forming;
and S4, connecting the head part and the connecting part through welding.
The connecting part of each head component is 2-3mm.
When the stamping part structure is designed, 2-3mm connecting parts are connected to each head assembly, and in the segmented head part obtained in this way, 2-3mm connecting parts are also connected to each head assembly, when welding is carried out, the connecting parts connected with the head assemblies are directly aligned with the rest connecting parts in the middle, and the connecting parts are straight plates, so that the arrangement ensures the straight alignment welding, the welding step is simpler and more convenient to operate, and the head assemblies with certain angles at the connecting parts are directly aligned with the connecting parts for welding instead of being arc-shaped.
In the step S2, the dividing and punching part adopts a wire cutting mode.
In the step S2, before the stamped part is divided, the stamped part needs to be aligned.
The alignment reference is the skirt edges of the plane, the straight surfaces on two sides and the surface A on two ends of the axial direction of the stamping part, two opposite straight surface parts exist at the shoreline position of the middle part of the axial direction of the stamping part, the horizontal plane for positioning the plate to be stamped is the surface A on the upper surface of the female die, and the skirt edges of the plane, the straight surfaces on two sides and the surface A on two ends of the axial direction are perpendicular to each other.
And after the skirt edge of the A face of the stamping part is stamped and formed, a stamping machine is adopted to flatten the plate material to form and then serve as a positioning reference.
In the step S4, trial assembly is carried out before welding, and the overall length and the size of the thin-wall special-shaped part are confirmed.
In the step S4, the welding comprises spot welding and splice welding, a head part and a connecting part are fixed by adopting a general tool, then the head part and the connecting part are spot-welded, and then the product after spot welding is subjected to splice welding to obtain the thin-wall special-shaped part.
During spot welding, the connecting part of the head part connected with the head assembly is aligned with the connecting part in the middle, so that the straight edge is ensured to be aligned during welding.
The processing method comprises stamping, sheet metal bending and welding. The sectional forming realizes the processing of parts with different specifications, reduces the cost and shortens the production period to a certain extent.
Because the part material is 5A06 aluminum alloy with the thickness of 1.5mm, the length of the whole part is about 1000mm, the width is about 50mm, the requirement on the profile of the formed surface is not high, the assembly is watertight and airtight, and the processing scheme meets the design requirement and the use requirement.
In summary, the present application at least includes the following beneficial technical effects:
the method for processing the thin-wall special-shaped part is the same as that of the method, the part which is complicated and cannot be formed by simple bending is split and is formed by stamping alone, the parts with different specifications are processed by the same die, the cost is shared to the parts with different specifications, the size of the die for the sectional forming is only 1/10 or less of that of the integral forming die, and the cost of die production is reduced while the die production period is shortened.
Drawings
FIG. 1 is a female die of a stamping die;
FIG. 2 is a punch of a press forming die;
fig. 3 is a schematic view of the overall structure of the male and female mold assembly.
Reference numerals illustrate:
1. a male die; 2. a female die;
3. straight surfaces at two sides;
4. and (3) an A surface: a positioning surface of the plate before stamping;
axial direction: corresponding to the axial direction of the die and also corresponding to the axial direction of the press forming assembly.
Detailed Description
The present application is described in further detail below with reference to the attached drawing figures and specific examples:
the embodiment of the application discloses a processing method for processing a thin-wall special-shaped part, as shown in fig. 1, special-shaped characteristics of a certain type of thin-wall special-shaped part are mainly at two end heads, the thin-wall special-shaped part comprises head assemblies at two ends and a connecting part in the middle, the head assemblies at two ends are symmetrical parts, and lengths of the connecting parts in the middle of the thin-wall special-shaped parts with different specifications are different.
For the thin-wall special-shaped part, most of the middle connecting part is removed, each head component and the structure directly connected with the connecting part of 2-3mm connected with the head component are used as stamping parts, and corresponding concave-convex molds are designed according to the stamping part structure. As shown in fig. 3, the concave-convex die comprises a convex die 1 and a concave die 2, a concave part matched with the shape of a stamping part is arranged in the middle of the upper surface of the concave die 1, a convex part matched with the shape of the stamping part is arranged in the middle of the lower surface of the convex die 1, the convex part is matched with the concave part, and horizontal a surfaces are arranged on two sides of the concave part on the upper surface of the concave die 1.
The two head assemblies are integrally punched parts, which are symmetrical parts, by embossing the male and female dies of fig. 1 and 2. The direction of one head component pointing to the other head component is the axial direction, and the stamping part is divided along the axial symmetry plane and then is formed to obtain two separated head parts. The middle part of the stamping part along the axial direction is provided with two side straight surfaces parallel to the axial direction, the two side straight surfaces are perpendicular to the A surface, and the A surface is a horizontal surface used for positioning the plate to be stamped on the upper surface of the female die 2.
The connecting part of the middle section of the thin-wall special-shaped part can be formed by bending a simple sheet metal, and the formed section of the middle section is the section of the symmetrically-divided stamping component.
Because the thin-wall special-shaped part has various length specifications along the axial direction and has smaller yield in a certain period of time. The special-shaped end part features can be independently formed, and the special-shaped end part features are welded and formed after being processed in a segmented mode. And the manufacturing cost of the integral stamping forming tool for the parts of the same type is reduced, and the integral length is controlled by controlling the middle sections with different lengths.
The method specifically comprises the following steps:
step one, after laser blanking of rectangular plates with uniform specification and size, complex end feature forming can be completed through a set of stamping forming dies (shown in figures 1 and 2), wherein a sinking table of the A face of the female die 2 is used as a positioning reference of the rectangular plates, and symmetrical stamping parts are formed after stamping. Then flattening the skirt edges corresponding to the A surface after the plate is formed by a punching machine, respectively taking the axial length of the punched part after the plate is formed, straight surfaces on two sides and the flattened skirt edges of the A surface as references, aligning the positions of the punched part, taking the axial length as a cutting plane, linearly cutting the symmetrical punched part at the positions of the cutting plane to obtain two separated head parts, and finally cutting and polishing to remove redundant skirt edge materials;
step two, blanking rectangular plates with different lengths by laser, wherein the length direction corresponds to the axial direction of the stamping forming assembly in the step one, forming connecting parts of middle sections with different length specifications by bending, and ensuring that the cross sections of the connecting parts are consistent with the cutting cross sections of the central lines in the step one, so that straight edges can be aligned in the next welding step;
step three, pre-welding trial assembly, namely fixing the head assembly and the connecting part by adopting a universal tool after confirming the overall axial length dimension after splice forming, then preliminarily fixing the head assembly and the connecting part by adopting spot welding, finishing final forming by splice welding, and finally polishing a welding bead and correcting the shape by a fitter.
While the invention has been described in terms of the preferred embodiment, it is not intended to limit the invention, but it will be apparent to those skilled in the art that variations and modifications can be made without departing from the spirit and scope of the invention, and therefore the scope of the invention is defined in the appended claims.
Claims (9)
1. A processing method for processing a thin-wall special-shaped part is characterized by comprising the following steps of: comprising
S1, a thin-wall special-shaped part comprises head assemblies at two ends and a connecting part in the middle, wherein the head assemblies at the two ends and the connecting part connected with the head assemblies are directly connected to be used as a stamping part, and a concave-convex die stamping forming is adopted to obtain the stamping part;
s2, dividing the symmetry plane of the stamping part along the axial direction to form two separated head parts, wherein the direction of one head part pointing to the other head part is the axial direction;
s3, obtaining a connecting part left in the middle through bending and forming;
and S4, connecting the head part and the connecting part through welding.
2. The method for machining a thin-wall profiled part of a certain type according to claim 1, characterized in that: the connecting part of each head component is 2-3mm.
3. The method for machining a thin-wall profiled part of a certain type according to claim 1, characterized in that: in the step S2, the dividing and punching part adopts a wire cutting mode.
4. The method for machining a thin-wall profiled part of a certain type according to claim 1, characterized in that: in the step S2, before the stamped part is divided, the stamped part needs to be aligned.
5. The method for machining a thin-wall profiled part of claim 4, wherein: the alignment reference is the skirt edges of the plane, the straight surfaces on two sides and the surface A on two ends of the axial direction of the stamping part, two opposite straight surface parts exist at the shoreline position of the middle part of the axial direction of the stamping part, the horizontal plane for positioning the plate to be stamped is the surface A on the upper surface of the female die, and the skirt edges of the plane, the straight surfaces on two sides and the surface A on two ends of the axial direction are perpendicular to each other.
6. The method for machining a thin-wall profiled part of claim 5, wherein: and after the skirt edge of the A face of the stamping part is stamped and formed, a stamping machine is adopted to flatten the plate material to form and then serve as a positioning reference.
7. The method for machining a thin-wall profiled part of a certain type according to claim 1, characterized in that: in the step S4, trial assembly is carried out before welding, and the overall length and the size of the thin-wall special-shaped part are confirmed.
8. The method for machining a thin-wall profiled part of a certain type according to claim 1, characterized in that: in the step S4, the welding comprises spot welding and splice welding, a head part and a connecting part are fixed by adopting a general tool, then the head part and the connecting part are spot-welded, and then the product after spot welding is subjected to splice welding to obtain the thin-wall special-shaped part.
9. The method for machining a thin-wall profiled part of a type according to claim 8, characterized in that: during spot welding, the connecting part of the head part connected with the head assembly is aligned with the connecting part in the middle, so that the straight edge is ensured to be aligned during welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706430.6A CN116117527A (en) | 2022-12-29 | 2022-12-29 | Processing method for processing thin-wall special-shaped parts of certain types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706430.6A CN116117527A (en) | 2022-12-29 | 2022-12-29 | Processing method for processing thin-wall special-shaped parts of certain types |
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| Publication Number | Publication Date |
|---|---|
| CN116117527A true CN116117527A (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211706430.6A Pending CN116117527A (en) | 2022-12-29 | 2022-12-29 | Processing method for processing thin-wall special-shaped parts of certain types |
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| CN (1) | CN116117527A (en) |
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- 2022-12-29 CN CN202211706430.6A patent/CN116117527A/en active Pending
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