CN113751605B - Manufacturing method for one-time bending forming of narrow side of box-shaped hollow piece - Google Patents
Manufacturing method for one-time bending forming of narrow side of box-shaped hollow piece Download PDFInfo
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- CN113751605B CN113751605B CN202111004587.XA CN202111004587A CN113751605B CN 113751605 B CN113751605 B CN 113751605B CN 202111004587 A CN202111004587 A CN 202111004587A CN 113751605 B CN113751605 B CN 113751605B
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- box
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- shaped hollow
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- bending
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- 238000005452 bending Methods 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 22
- 230000009471 action Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 8
- 230000001788 irregular Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
A manufacturing method for manufacturing a narrow side of a box-shaped hollow piece by one-time bending and forming comprises the following steps: step one: positioning the box-shaped hollow part sheet metal part on the positioning block; step two: the driving rod drives the moving block to move forwards, so that the core rod is inserted into the inner cavity of the sheet metal part of the box-shaped hollow part; step three: clamping and fixing the box-shaped hollow piece nut piece between the core rods; step four: the upper die body is driven to move downwards relative to the lower die body, the bending block guide plate and the bending block fixing needle extrude the eccentric bending block to rotate so as to flatten the wing plate, and the side surface of the lower jacking block extrudes the narrow edge of the sheet metal part to form flattened threads, so that the box-shaped hollow part is manufactured; step five: the upper die body driving part drives the upper die body to move upwards, the eccentric bending block resets under the action of gravity, and the lower die body resets under the action of a spring; step six: the driving rod drives the moving block to return to the initial position, the box-shaped hollow piece is taken down, and the process is finished. The invention has the advantages that: the two processes of bending and flattening are completed at one time, so that the production efficiency is greatly improved, and the production benefit is improved.
Description
Technical Field
The invention relates to the technical field of hollow piece manufacturing, in particular to a manufacturing method for one-time bending and forming of a narrow side of a box-shaped hollow piece.
Background
The applicant's original chinese patent application number is CN202010487728.7 entitled "connecting device for a floating assembly and method of use thereof" discloses a connecting device for a floating assembly, comprising an upper die body and a lower die body, wherein the upper die body is connected with an upper die body driving portion, and the upper die body can be driven by the upper die body driving portion to move up and down relative to the lower die body, and is characterized in that: the lower die body is provided with a positioning part capable of positioning the sheet metal part on the lower die body and positioning the nut part in an inner cavity between wing plates of the sheet metal part, a driving mechanism capable of opening the positioning part so as to take out or put in the sheet metal part and the nut part from the positioning part, a molding part capable of being connected with the upper die body and pressing the wing plates to bend the sheet metal part put in the nut part into a sheet metal box body, and a molding part resetting mechanism capable of resetting the molding part when the upper die body is separated from the molding part, wherein the driving mechanism and the upper die body driving part are respectively connected with a switch and a power supply. The advantages of this patent are: realize the non-rigid connection of sheet metal component and nut spare, make the floating subassembly that satisfies the processing requirement. However, the forming process in the method is to pre-bend and then level, two pieces of equipment and two sets of die sleeves are needed for completing the integral forming process, the production efficiency of the product is low, and the production cost of the product is high, so that the manufacturing method needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a manufacturing method for one-time bending and forming of the narrow side of the box-shaped hollow piece, which can improve the production efficiency of the product and reduce the production cost of the product.
The technical scheme adopted for solving the technical problems is as follows: a manufacturing method for manufacturing a narrow side of a box-shaped hollow piece by one-time bending and forming comprises the following steps:
step one: positioning the box-shaped hollow part sheet metal part on a positioning block provided with a positioning pin;
step two: the driving rod drives the moving block to move forwards, so that the core rod is inserted into the inner cavity of the sheet metal part of the box-shaped hollow part;
step three: clamping and fixing the box-shaped hollow piece nut piece between the core rods;
step four: the upper die body driving part drives the upper die body to move downwards relative to the lower die body, the bending block guide plate and the bending block fixing needle extrude the eccentric bending block to rotate so as to flatten the wing plate, and the side surface of the lower jacking block extrudes the narrow edge of the sheet metal part to form flattened threads, so that a box-shaped hollow part is manufactured;
step five: the upper die body driving part drives the upper die body to move upwards, the eccentric bending block resets under the action of gravity, and the lower die body resets under the action of a spring;
step six: the driving rod drives the moving block to return to the initial position, the box-shaped hollow piece is taken down, and the process is finished.
When the upper die body moves downwards relative to the lower die body through the upper die body driving part, the eccentric bending block can keep normal stress under the pressure action of the bending block fixing needle and the bending block guide plate.
The length of the bending block fixing needle is larger than that of the eccentric bending block.
The eccentric bending block comprises an arc surface, and the radius of the arc surface is the same as that of an irregular notch at the bottom of the guide plate of the bending block.
When the upper die body moves downwards relative to the lower die body, the positioning block can drive the flat plate and the driving rod to move downwards.
The upper die body driving part and the driving mechanism are connected with a power supply and a switch.
As an improvement, the upper die body driving part and the driving mechanism can realize timing movement through a control module.
The lower die body is provided with a limiting block, and the limiting block limits the maximum distance that the upper die body can move downwards.
The eccentric bending block is provided with an arc notch in front and back, and the arc notch and the bending block fixing needle limit the maximum angle that the eccentric bending block can rotate.
The bottom of the eccentric bending block is a plane with a notch, and when the eccentric bending block rotates to the maximum angle, the plane is in a horizontal state.
The thickness of the core rod is the same as the height of the inner cavity of the sheet metal part, and the spacing of the core rod is the same as the width of the nut part.
Compared with the prior art, the invention has the advantages that: the two processes of bending and flattening can be completed on one die at a time, so that the production efficiency is greatly improved, the production cost is reduced, and the production benefit is improved.
Drawings
Fig. 1 is a perspective view of the present embodiment;
FIG. 2 is a front view of the present embodiment before extrusion;
FIG. 3 is a front view of the present embodiment when pressed;
FIG. 4 is a perspective view of the box-shaped hollow member prior to extrusion;
FIG. 5 is a perspective view of the box-shaped hollow member after extrusion;
FIG. 6 is a perspective view of an eccentric bending block;
FIG. 7 is a perspective view of another angle of the present embodiment;
description of the embodiments
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 7, the method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending molding comprises the following steps:
step one: positioning the box-shaped hollow member sheet metal part 41 on the positioning block 22 provided with the positioning pin 221;
step two: the driving rod 33 arranged on the driving mechanism 3 drives the moving block 32 to move forwards, so that the core rod 321 is inserted into the inner cavity of the box-shaped hollow part sheet metal part 41;
step three: clamping and fixing the box-shaped hollow member nut member 42 between the core rods 321;
step four: the upper die body driving part drives the upper die body 1 to move downwards relative to the lower die body 2, the bending block guide plate 12 and the bending block fixing needle 14 extrude the eccentric bending block 13 to rotate so as to flatten the wing plate 411, and the side surface of the lower jacking block 23 extrudes the narrow edge 412 of the sheet metal part to form flattened threads, so that a box-shaped hollow part is manufactured;
step five: the upper die body driving part drives the upper die body 1 to move upwards, the eccentric bending block 13 resets under the action of gravity, and the lower die body 2 resets under the action of the spring 25;
step six: the driving rod 33 drives the moving block 32 to return to the initial position, the box-shaped hollow piece is removed, and the process is finished.
When the upper die body 1 moves downwards relative to the lower die body 2 through the upper die body driving part, the eccentric bending block 13 can keep normal stress under the pressure action of the bending block fixing needle 14 and the bending block guide plate 12.
The length of the bending block fixing needle 14 is longer than that of the eccentric bending block 13.
The eccentric bending block 13 comprises an arc surface 131, and the radius of the arc surface 131 is the same as that of the arc surface of the irregular notch 121 at the bottom of the bending block guide plate 12. When the upper die body 1 moves downwards relative to the lower die body 2, the positioning block 22 drives the flat plate 31 and the driving rod 33 to move downwards. The upper die body driving part and the driving mechanism 3 are connected with a power supply and a switch, and the upper die body driving part and the driving mechanism 3 can realize timing movement through a control module. The lower die body 2 is provided with a limiting block 24, and the limiting block 24 limits the maximum distance that the upper die body 1 can move downwards. The eccentric bending block 13 is provided with an arc notch 135 at the front and back, and the arc notch 135 and the bending block fixing needle 14 limit the maximum angle that the eccentric bending block 13 can rotate. The bottom of the eccentric bending block 13 is a plane with a notch, and when the eccentric bending block 13 rotates to the maximum angle, the plane is in a horizontal state. The thickness of the core rod 321 is the same as the height of the inner cavity of the box-shaped hollow piece sheet metal part 41, and the interval between the core rods 321 is the same as the width of the box-shaped hollow piece nut part 42. The box-shaped hollow piece is riveted by punching, and because the box body is bent and has a narrow edge (the bending length is only one material thickness), the box body cannot be formed by one-step side pushing, the original technology realizes riveting in place by one-step side pushing, pre-bending and then patting, two working procedures need two pieces of equipment, two sets of dies, the efficiency is low, and the cost is high. The original single side thrust is changed, and the bending edge is always stressed normally by the bending block, the fixing needle and the guide plate, so that the problem that the original single side thrust cannot be molded and the material is difficult to take off is solved, the two working procedures are combined into one, and the efficiency is improved.
The die structure adopted by the manufacturing method is as follows: the die structure is suitable for box-shaped floating assemblies similar to each other, the narrow edges are not increased in the metal plate bending process, the indentation is formed by one-time bending, and the strength of the box body after riveting is ensured. The utility model provides a make box-shaped hollow piece narrow limit one time bending fashioned mould, includes last die body 1, lower die body 2 and actuating mechanism 3, last die body 1 is connected with last die body drive portion, last die body 1 can reciprocate relative lower die body 2 under last die body drive portion drive, its characterized in that: the upper die body 1 comprises a positioning plate 11, a bending block guide plate 12, two eccentric bending blocks 13 which are bilaterally symmetrical and two bending block fixing needles 14, wherein the bending block guide plate 12 and the bending block fixing needles 14 are fixed on the positioning plate 11, the eccentric bending block 13 is a hollow block with a notch 134, the height of the notch 134 is greater than or equal to the height of a convex part of a box-shaped hollow member nut 42, the eccentric bending block 13 comprises an arc surface 131, a plane 132 and a bottom surface 133, an irregular notch 121 which is matched with the arc surface 131 is arranged at the bottom of the bending block guide plate 12, the space of the irregular notch 121 is larger than the volume of the eccentric bending block 13, the shape of the bottom surface 133 is matched with that of a box-shaped hollow member wing plate 411, symmetrical arc-shaped notches 135 are respectively arranged at the front and rear surfaces of the eccentric bending block 13, the bending block fixing needles 14 pass through the arc-shaped notches 135 to be movably connected with the eccentric bending block 13, and the driving mechanism 3 and the upper die body driving part are respectively connected with a motor. The driving mechanism 3 comprises a flat plate 31, the flat plate 31 is provided with a moving block 32 and a driving rod 33, one end of the moving block 32 is provided with a core rod 321, and the other end of the moving block 32 is fixedly connected with the driving rod 33. The driving rod 33 is connected with a cylinder or an oil cylinder. The lower template 2 comprises a stripping block 21, a positioning block 22, two lower jacking blocks 23 which are bilaterally symmetrical, two limiting blocks 24 and a spring 25. The stripping block 21 is provided with a square notch 211, and the cross section of the square notch 211 is larger than or equal to the maximum cross section of the lower top block 23. The positioning block 22 is provided with two positioning pins 221 which are symmetrical front and back and two notches which are symmetrical left and right and can be used for the core rod 321 to pass through, and the positioning block 22 is connected with the flat plate 31. The top of the lower jacking block 23 is a wedge with a sharp upper part and a wide lower part, the top of the wedge is an arc, and the wedge-shaped extrusion surface is provided with threads. The springs 25 are respectively arranged below the stripper block 22 and the flat plate 31. The front end of the bending block fixing needle 14 is provided with a limit convex part. The length of the bending block fixing needle 14 is longer than that of the eccentric bending block 13.
Claims (9)
1. A manufacturing method for manufacturing a narrow side of a box-shaped hollow piece by one-time bending and forming is characterized by comprising the following steps of: the manufacturing method comprises the following steps:
step one: positioning a box-shaped hollow part sheet metal part (41) on a positioning block (22) provided with a positioning pin (221);
step two: a driving rod (33) arranged on the driving mechanism (3) drives the moving block (32) to move forwards, so that the core rod (321) is inserted into the inner cavity of the box-shaped hollow sheet metal part (41);
step three: clamping and fixing the box-shaped hollow piece nut piece (42) between the core rods (321);
step four: the upper die body driving part drives the upper die body (1) to move downwards relative to the lower die body (2), the bending block guide plate (12) and the bending block fixing needle (14) extrude the eccentric bending block (13) to rotate so as to flatten the wing plate (411), and the side surface of the lower jacking block (23) extrudes the narrow edge (412) of the sheet metal part to form flattened threads, so that the box-shaped hollow part is manufactured;
step five: the upper die body driving part drives the upper die body (1) to move upwards, the eccentric bending block (13) resets under the action of gravity, and the lower die body (2) resets under the action of a spring (25);
step six: the driving rod (33) drives the moving block (32) to return to the initial position, the box-shaped hollow piece is taken down, and the process is finished; when the upper die body (1) moves downwards relative to the lower die body (2) through the upper die body driving part, the eccentric bending block (13) can keep normal stress under the pressure action of the bending block fixing needle (14) and the bending block guide plate (12).
2. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending molding according to claim 1, wherein the method comprises the following steps: the length of the bending block fixing needle (14) is larger than that of the eccentric bending block (13).
3. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending molding according to claim 1, wherein the method comprises the following steps: the eccentric bending block (13) comprises an arc surface (131), and the radius of the arc surface (131) is the same as that of an irregular notch (121) at the bottom of the bending block guide plate (12).
4. A method for manufacturing a narrow side of a box-shaped hollow member by one-time bending molding according to any one of claims 1 to 3, wherein: when the upper die body (1) moves downwards relative to the lower die body (2), the positioning block (22) drives the flat plate (31) and the driving rod (33) to move downwards.
5. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending and forming according to claim 4, which is characterized in that: the upper die body driving part and the driving mechanism (3) are connected with a power supply and a switch, and the upper die body driving part and the driving mechanism (3) can realize timing movement through a control module.
6. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending and forming according to claim 5, which is characterized in that: the lower die body (2) is provided with a limiting block (24), and the limiting block (24) limits the maximum distance that the upper die body (1) can move downwards.
7. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending and forming according to claim 6, which is characterized in that: the eccentric bending block (13) is provided with an arc notch (135) front and back, and the arc notch (135) and the bending block fixing needle (14) limit the maximum angle which the eccentric bending block (13) can rotate.
8. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending and forming according to claim 7, wherein the method comprises the following steps of: the bottom of the eccentric bending block (13) is a plane with a notch, and when the eccentric bending block (13) rotates to the maximum angle, the plane is in a horizontal state.
9. The method for manufacturing the narrow side of the box-shaped hollow piece by one-time bending and forming according to claim 8, which is characterized in that: the thickness of the core rod (321) is the same as the height of the inner cavity of the box-shaped hollow piece sheet metal part (41), and the spacing of the core rods (321) is the same as the width of the box-shaped hollow piece nut part (42).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536574 | 2021-05-17 | ||
| CN2021105365740 | 2021-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113751605A CN113751605A (en) | 2021-12-07 |
| CN113751605B true CN113751605B (en) | 2023-12-19 |
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| CN202111004587.XA Active CN113751605B (en) | 2021-05-17 | 2021-08-30 | Manufacturing method for one-time bending forming of narrow side of box-shaped hollow piece |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1384575A (en) * | 1972-08-09 | 1975-02-19 | Musson I M | Tube bending apparatus |
| CN207494337U (en) * | 2017-09-26 | 2018-06-15 | 芳源企业（上海）有限公司 | A type Bending Moulds |
| CN111283020A (en) * | 2020-03-30 | 2020-06-16 | 昆山嘉升精密电子工业有限公司 | Seesaw type stamping die structure and stamping precision verification method thereof |
| CN111531048A (en) * | 2020-06-02 | 2020-08-14 | 舟山市7412工厂 | Connecting device of floating assembly and using method thereof |
| CN212190704U (en) * | 2020-04-17 | 2020-12-22 | 杭州倍力机电设备制造有限公司 | Sheet metal machining forming die |
-
2021
- 2021-08-30 CN CN202111004587.XA patent/CN113751605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1384575A (en) * | 1972-08-09 | 1975-02-19 | Musson I M | Tube bending apparatus |
| CN207494337U (en) * | 2017-09-26 | 2018-06-15 | 芳源企业（上海）有限公司 | A type Bending Moulds |
| CN111283020A (en) * | 2020-03-30 | 2020-06-16 | 昆山嘉升精密电子工业有限公司 | Seesaw type stamping die structure and stamping precision verification method thereof |
| CN212190704U (en) * | 2020-04-17 | 2020-12-22 | 杭州倍力机电设备制造有限公司 | Sheet metal machining forming die |
| CN111531048A (en) * | 2020-06-02 | 2020-08-14 | 舟山市7412工厂 | Connecting device of floating assembly and using method thereof |
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| Publication number | Publication date |
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| CN113751605A (en) | 2021-12-07 |
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