CN114535373A - Three-dimensional bending forming method for section bar - Google Patents
Three-dimensional bending forming method for section bar Download PDFInfo
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- CN114535373A CN114535373A CN202210444371.3A CN202210444371A CN114535373A CN 114535373 A CN114535373 A CN 114535373A CN 202210444371 A CN202210444371 A CN 202210444371A CN 114535373 A CN114535373 A CN 114535373A
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- bending
- whole
- elastic
- section bar
- section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/15—Bending tubes using mandrels or the like using filling material of indefinite shape, e.g. sand, plastic material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the technical field of profile processing, and provides a profile three-dimensional bending forming method, which adopts elastic fillers to fill and/or splice profiles with any sections into regular shapes, and then adopts an elastic die to integrate the profiles which are filled and/or spliced into the regular shapes to form a processing whole; and finally, bending the whole machining body to realize the three-dimensional bending of the profile. The three-dimensional bending forming method for the section bar is strong in universality, can be suitable for bending processing of section bars with various sections, can improve the efficiency of the bending processing of the section bar, can greatly reduce the cost of the bending processing of the section bar, and is beneficial to use and popularization in the section bar bending industry.
Description
Technical Field
The invention relates to the technical field of profile processing, in particular to a three-dimensional bending forming method for a profile.
Background
At present, the section bending forming technology is one of important processing methods in manufacturing departments in the fields of aerospace, automobiles, chemical engineering, ships and the like, and occupies a very important position in the mechanical manufacturing industry. After being bent, the section bar has light weight, good toughness and high strength, and can be widely applied to the fields of rail vehicles, aerospace equipment, automobile and steamship frameworks, home decoration and the like.
In the process of bending and forming the section, if the bending radian is smaller, when the section is bent, a cavity at the bending part is easy to wrinkle and deform, and the appearance size of the section and the integrity of a cavity are seriously influenced. In order to solve this problem, it is currently used to support the cross section of the die cavity of the profile without deformation by plugging a core rod in the die cavity of the profile. However, since there are various types and specifications of the sectional material and some sectional materials have a special-shaped cross section, the method of plugging the core rod having a conventional shape is not suitable for bending the sectional material having a special-shaped cross section. If the core rod with the corresponding shape is machined at every time according to the shape of the special-shaped section, the bending machining efficiency of the section is low, the core rod cannot be restored to the original shape after being deformed, cannot be reused and can only be scrapped, and therefore the bending machining cost of the section is improved.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art, and provides a three-dimensional bending forming method for sectional materials, which is strong in universality, applicable to bending of sectional materials with various cross sections, capable of improving the efficiency of bending the sectional materials, greatly reducing the cost of bending the sectional materials and beneficial to application and popularization in the sectional material bending industry.
In order to achieve the purpose, the invention is realized by the following technical scheme: a three-dimensional bending forming method of section bars adopts elastic fillers to fill and/or splice the section bars with any section to form a regular shape, and then adopts an elastic die to integrate the section bars filled and/or spliced to the regular shape to form a processing whole; and finally, bending the whole machining body to realize the three-dimensional bending of the profile.
In the scheme, the method fills and/or splices the section bars with any section into a regular shape, and then the section bars are loaded into the elastic die for integration and bending, so that the method can solve the problems of low bending efficiency and high cost caused by die sinking processing of the profile modeling filler (core rod) according to the section shape of the section bars in the traditional process. In addition, the elastic filler and the elastic die can be restored to the original state and can be recycled, and the cost of bending the section bar is further reduced.
The forming process integrally comprises the following steps:
firstly, filling and/or splicing the section bars with any sections by using elastic fillers, so that the filled and/or spliced section bars form a semi-machined part with a regular shape;
and secondly, arranging an elastic die, and loading the regular-shaped semi-machined part into the elastic die to form a whole.
The final bending of the whole machining body to achieve three-dimensional bending of the profile is as follows: the method comprises the following steps:
step one, arranging a bent outer die with radian, and arranging a whole processing body in the bent outer die;
controlling the whole machining body to rotate, controlling the whole machining body to attach to a bending outer die and controlling the whole machining body to lift, so as to realize three-dimensional bending forming of the section;
and step three, blanking the whole bent and formed processing body, and taking out the elastic filler and the elastic die. The elastic filler and the elastic bending inner die can be restored to the original shape for reuse.
The regular shape of the invention is a strip shape with a regular cross section; or regular shape refers to a strip shape with a cross section formed by combining regular shapes. The regular shape of the present invention may be rectangular, regular polygonal, circular, elliptical, parallelogram, pentagonal, triangular, or trapezoidal, and the like. The regular cross section can be one of regular shapes, and the regular cross section can also be formed by combining more than two same or different regular shapes.
The elastic filler is an elastic filler formed by adopting a carving processing mode.
The elastic filler is a PE material, a PP material or a PVC material; the elastic mould is made of PE materials, PP materials, PVC materials or spring steel.
The bending outer die is provided with an arc-shaped groove; the elastic mould is an arc elastic mould matched with the arc groove; the arc-shaped groove of the bending outer die is used as a sliding groove, the whole processing body is controlled to rotate in the arc-shaped groove, and the torsion bending of the section in the arc-shaped groove is realized.
In the first step, the outer bending die with radian is as follows: the bending forming die plate is arranged, and the bending outer die is attached to the bending forming die plate.
The control of the whole processing and the fitting to the bent outer die means that: and controlling the whole processing whole or a part of the processing whole to lean against the bending outer die and be attached, so as to realize that the section bar is bent towards the bending outer die.
The control of the integral lifting of the processing means that: the two ends of the whole machining body are controlled to lift, and the whole machining body is bent towards the vertical direction.
Compared with the prior art, the invention has the following advantages and beneficial effects: the three-dimensional bending forming method for the section bar has strong universality, can be suitable for bending processing of section bars with various sections, can improve the efficiency of bending processing of the section bar, can greatly reduce the cost of bending processing of the section bar, and is beneficial to use and popularization in the section bar bending industry.
Drawings
FIG. 1 is a schematic view of a three-dimensional bending forming method for a profile according to the present invention, wherein a processing whole is formed by the profile and is arranged on a bending outer die;
FIG. 2 is a schematic view of the present invention in which the process is bent in torsion in a curved outer mold;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view of a profile bending apparatus used in the method of the present invention;
wherein, 1 is elastic filler, 2 is section bar, 3 is elastic die, 4 is bending outer die, 5 is arc groove, 6 is bending forming template, 7 is frame, 8 is clamping arm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1 to 4, the method for three-dimensionally bending and forming a profile of the present invention includes the following steps:
firstly, filling and splicing a section bar 2 with any section by using an elastic filler 1, so that the filled and spliced section bar 2 forms a strip-shaped semi-machined part with a rectangular cross section;
secondly, arranging an elastic die 3, and loading a strip-shaped semi-machined part with a rectangular cross section into the elastic die 3 to form a whole;
thirdly, arranging a bent outer die 4 with radian, and arranging the whole processing body in the bent outer die 4;
fourthly, controlling the whole processing body to rotate, controlling the whole processing body to attach to the bending outer die 4 and controlling the whole processing body to lift, so as to realize the three-dimensional bending forming of the section bar 2;
and fifthly, blanking the whole bent and formed processing body, taking out the elastic filler 1 and the elastic die 3, and enabling the elastic filler 1 and the elastic die 3 to be restored to the original shape for reuse.
Specifically, the elastic filler 1 of the present invention is an elastic filler formed by engraving, and the elastic filler 1 is a PE material, a PP material, or a PVC material. And the elastic mould 3 is made of PE material, PP material, PVC material or spring steel.
The outer bending mould is provided with an arc-shaped groove 5, and the elastic mould 3 is an arc-shaped mould matched with the arc-shaped groove 5; the arc-shaped groove 5 of the bending outer die 4 is used as a sliding groove, the whole processing body is controlled to rotate in the arc-shaped groove 5, and the torsion bending of the section bar 2 in the arc-shaped groove 5 is realized.
In the third step, the curved outer mold 4 having a radian means: the bending forming die plate 6 is arranged, and the bending outer die 4 is attached to the bending forming die plate 6.
The control of the whole processing and the attaching to the bending outer die 4 means that: and controlling the whole processing whole or a part of the processing whole to lean against the bending outer die 4 and attach, so as to realize that the section bar 2 is bent towards the bending outer die 4.
The above-mentioned control processing whole goes up and down to mean: the two ends of the whole machining body are controlled to lift, and the whole machining body is bent towards the vertical direction.
The section bending processing equipment adopted by the section three-dimensional bending forming method can be a stretch bender in the prior art, the section bending processing equipment comprises a frame 7 and two clamping arms 8 arranged on the frame 7, and a bending forming template 6 is arranged on the frame 7. When the section bar is bent, the clamping arms 8 are used for clamping the two ends of the whole processing body.
(1) The clamping arm 8 is controlled to rotate so as to drive the whole machining body to rotate in the arc-shaped groove 5, and the section is twisted and bent in the arc-shaped groove 5.
(2) And controlling the clamping arm 8 to move so as to drive the whole machining whole or a part of the machining whole to lean against the bending outer die 4 and be attached, and realizing that the section bar 2 is bent towards the bending outer die 4.
(3) The clamping arm 8 is controlled to lift so as to drive the two ends of the whole machining body to lift, and the whole machining body is bent towards the vertical direction.
The method of the invention fills and splices the section bars 2 with any section into a regular shape, and then the section bars are arranged in the elastic die 3 for integration and bending, therefore, the method can solve the problems of low bending efficiency and high cost caused by the mould opening processing of the profiling filler (core rod) according to the section shape of the section bar 2 in the traditional process. In addition, the elastic filler 1 and the elastic die 3 can be restored to the original shape and can be recycled, and the cost of bending the section bar 2 is further reduced.
The regular shape of the invention can also be a strip with a cross section in regular shapes such as regular polygon, circle, ellipse, parallelogram, pentagon, triangle or trapezoid, or the regular shape can also be a strip with a cross section formed by combining more than two same or different regular shapes.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A three-dimensional bending forming method of a section bar is characterized by comprising the following steps: the method comprises the following steps that elastic fillers are used for filling and/or splicing sectional materials with any sections to form a regular shape, and then elastic molds are used for integrating the sectional materials which are filled and/or spliced to the regular shape to form a processing whole; and finally, bending the whole machining body to realize the three-dimensional bending of the profile.
2. The three-dimensional bending forming method of the section bar according to claim 1, characterized in that: the forming process integrally comprises the following steps:
firstly, filling and/or splicing the section bars with any sections by using elastic fillers, so that the filled and/or spliced section bars form a semi-machined part with a regular shape;
and secondly, arranging an elastic die, and loading the regular-shaped semi-machined part into the elastic die to form a whole.
3. The three-dimensional bending forming method of the section bar according to claim 1, characterized in that: the final bending of the whole machining body to achieve three-dimensional bending of the profile is as follows: the method comprises the following steps:
step one, arranging a bent outer die with radian, and arranging a whole processing body in the bent outer die;
controlling the whole machining body to rotate, controlling the whole machining body to attach to a bending outer die and controlling the whole machining body to lift, so as to realize three-dimensional bending forming of the section;
and step three, blanking the whole bent and formed processing body, and taking out the elastic filler and the elastic die.
4. The three-dimensional bending forming method of the section bar according to claim 1 or 2, characterized in that: the regular shape is a strip shape with a regular cross section; or regular shape refers to a strip shape with a cross section formed by combining regular shapes.
5. The three-dimensional bending forming method of the section bar according to claim 1 or 2, characterized in that: the elastic filler is an elastic filler formed by adopting a carving processing mode.
6. The three-dimensional bending forming method of the profile according to claim 1 or 2, characterized in that: the elastic filler is a PE material, a PP material or a PVC material; the elastic mould is made of PE materials, PP materials, PVC materials or spring steel.
7. The three-dimensional bending forming method of the section bar according to claim 3, characterized in that: the bending outer die is provided with an arc-shaped groove; the elastic mould is an arc elastic mould matched with the arc groove; the arc-shaped groove of the bending outer die is used as a sliding groove, the whole processing body is controlled to rotate in the arc-shaped groove, and the torsion bending of the section in the arc-shaped groove is realized.
8. The three-dimensional bending forming method of the section bar according to claim 3, characterized in that: in the first step, the outer bending die with radian is as follows: the bending forming die plate is arranged, and the bending outer die is attached to the bending forming die plate.
9. The three-dimensional bending forming method of the section bar according to claim 3, characterized in that: the control of the whole processing and the fitting to the bent outer die means that: and controlling the whole processing whole or a part of the processing whole to lean against the bending outer die and be attached, so as to realize that the section bar is bent towards the bending outer die.
10. The three-dimensional bending forming method of the section bar according to claim 3, characterized in that: the control of the integral lifting of the processing means that: the two ends of the whole machining body are controlled to lift, and the whole machining body is bent towards the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444371.3A CN114535373A (en) | 2022-04-26 | 2022-04-26 | Three-dimensional bending forming method for section bar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210444371.3A CN114535373A (en) | 2022-04-26 | 2022-04-26 | Three-dimensional bending forming method for section bar |
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| CN114535373A true CN114535373A (en) | 2022-05-27 |
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| CN202210444371.3A Pending CN114535373A (en) | 2022-04-26 | 2022-04-26 | Three-dimensional bending forming method for section bar |
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Application publication date: 20220527 |
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