CN103272960B - Welding-free circular pipe forming method - Google Patents
Welding-free circular pipe forming method Download PDFInfo
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- CN103272960B CN103272960B CN201310220449.4A CN201310220449A CN103272960B CN 103272960 B CN103272960 B CN 103272960B CN 201310220449 A CN201310220449 A CN 201310220449A CN 103272960 B CN103272960 B CN 103272960B
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- punch forming
- forming device
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- time punch
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Abstract
The invention relates to a circular pipe forming method, in particular to a welding-free circular pipe forming method. The forming method includes forming a punch forming plate in one step by the aid of a punching machine; subjecting a one-step formed product to first-time punch forming by the aid of a first-time punch forming device; and then subjecting a first-time punch formed product to second-time punch forming by the aid of a second-time punch forming device. The welding-free circular pipe forming method has the advantages that the forming method is cost-saving (the circular pipe is substituted by a low carbon steel plate) and free of machining process, so that a die becomes simple in structure; welding is substituted by riveting process, so that production cost in manufacturing is lowered, sizes are kept constant, while thermal deformation in the welding is avoided; and besides, the welding-free circular pipe forming method is simple to operate and can improve efficiency.
Description
Technical field
The present invention relates to a kind of shaping round tube method, particularly relate to a kind of unjointed shaping round tube method.
Background technology
Now domestic many enterprises all can use short pipe, and the shape stamping out part is needed in each position of circumference of pipe, as square hole, semicircle etc., this type of demand is very large, and it is very high to the requirement of parameters, as the dimensional tolerance of bottom square hole, the position of related features of bottom square hole and upper recess, the ovality etc. of pipe, but not high to the rigid requirements of pipe.Machining process route is in the past: 1, chooses the pipe blanking (as length 100mm, can select sawing machine, lathe etc.) of same specification, more consuming time; 2, the square hole on circular tube circumference surface, the shapes such as circle need punch press to complete, and if not in a plane, need shaping position more, can cause the accumulation of error, may need the punch forming of 3-4 time (cause consuming time, mould takes increase, and cost of labor rises) simultaneously.
Select pipe as raw material, price is higher.
Summary of the invention
For the weak point of above-mentioned technology, the invention provides a kind of cost-saving (comprising the cost of raw material, cost of labor, die cost), raise the efficiency, forming method easy and simple to handle.
A kind of unjointed shaping round tube method, comprises the steps:
Plate of making even strikes out shaped piece punch press and carries out one-shot forming, and the product after shaping can go out 4 hasps respectively at two minor face places of flat board, goes out a square hole, go out a semicircle in the lower long edge position of flat board at the center of flat board;
One-time formed product first time punch forming device is carried out first time punch forming, product after shaping is a semicircular flat board in centre, described first time punch forming device by first time punch forming device patrix and first time punch forming device counterdie form, the centre of counterdie has semi-circular recesses, the lower end of patrix becomes semi-circular shape, matches with the semi-circular recesses of counterdie;
Again with second time punch forming device, the product after first time punch forming is carried out second time punch forming, second time punch forming device used is by progressive die, second time punch forming device patrix, second time punch forming device counterdie composition, progressive die moves back and forth along the cavity on second time punch forming device patrix, a semi-circular recesses is arranged at the bottom of second time punch forming device patrix, the position corresponding with the semi-circular recesses bottom second time punch forming device patrix on second time punch forming device counterdie top is provided with same semi-circular recesses, simultaneously at the both sides limited location block of second time punch forming device counterdie.
Preferably, described plate stamping is pressed into shaped piece is low-carbon steel plate.
Beneficial effect of the present invention is, cost-saving (replacing pipe with low-carbon steel plate), eliminates the operation of processing, and mould becomes very simple; Replace welding with riveting process, the production cost of manufacture is declined, size can not change simultaneously, (welding can produce thermal deformation); Simple to operate, efficiency improves.
Accompanying drawing explanation
Fig. 1 is the structural representation that plate stamping is pressed into shaped piece;
Fig. 2 is product after first time punch forming;
Fig. 3 is first time punch forming device front view;
Fig. 4 is second time punch forming device front view;
Fig. 5 is second time punch forming device top view;
Fig. 6 is second time punch forming device left view.
1-hasp; 2-square hole; 3-is semicircle; 4-first time punch forming device patrix; Product after 5-first time punch forming; 6-first time punch forming device counterdie; 7-progressive die; 8-second time punch forming device patrix; Product after the punch forming of 9-second time; 10-second time punch forming device counterdie; 11-limited block
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of unjointed shaping round tube method, comprises the steps:
Plate of making even strikes out shaped piece punch press and carries out one-shot forming, and the product after shaping can go out 4 hasps 1 respectively at two minor face places of flat board, goes out a square hole 2, go out a semicircle 3, as shown in Figure 1 in the lower long edge position of flat board at the center of flat board;
One-time formed product first time punch forming device is carried out first time punch forming, and the product after shaping is a semicircular flat board in centre, as shown in Figure 2; Described first time punch forming device by first time punch forming device patrix 4 and first time punch forming device counterdie 5 to form, the centre of punch forming device counterdie 5 has semi-circular recesses for the first time, the lower end of punch forming device patrix 4 becomes semi-circular shape for the first time, the semi-circular recesses of punch forming device counterdie 5 matches with first time, as shown in Figure 3;
Again with second time punch forming device, the product after first time punch forming is carried out second time punch forming, second time punch forming device used is by progressive die 7, second time punch forming device patrix 8, second time punch forming device counterdie 10 forms, as Fig. 4, Fig. 5, shown in Fig. 6, progressive die 7 moves back and forth along the cavity on second time punch forming device patrix 8, a semi-circular recesses is arranged at the bottom of second time punch forming device patrix 8, the position corresponding with the semi-circular recesses bottom second time punch forming device patrix 8 on second time punch forming device counterdie 10 top is provided with same semi-circular recesses, simultaneously at the both sides limited location block of second time punch forming device counterdie 10, when second time punch forming device patrix 8 down acts on, plate stamping is pressed into shaped piece and becomes a pipe, 4 hasps 1 all realize interference fit simultaneously, at this moment progressive die 7 down moves, a small rut is stamped out at the home position of hasp 1, make hasp 1 that certain plastic deformation occur, play certain cementation, shapingly to complete.
Preferably, described plate stamping is pressed into shaped piece is low-carbon steel plate.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a unjointed shaping round tube method, is characterized in that, comprise the steps:
Plate of making even strikes out shaped piece punch press and carries out one-shot forming, and the product after shaping can go out 4 hasps respectively at two minor face places of flat board, goes out a square hole, go out a semicircle in the lower long edge position of flat board at the center of flat board;
One-time formed product first time punch forming device is carried out first time punch forming, product after shaping is a semicircular flat board in centre, described first time punch forming device by first time punch forming device patrix and first time punch forming device counterdie form, the centre of punch forming device counterdie has semi-circular recesses for the first time, first time, there was semicircle the lower end of punch forming device patrix, and the semi-circular recesses of punch forming device counterdie matches with first time;
Again with second time punch forming device, the product after first time punch forming is carried out second time punch forming, second time punch forming device used is by progressive die, second time punch forming device patrix, second time punch forming device counterdie composition, progressive die moves back and forth along the cavity on second time punch forming device patrix, a semi-circular recesses is arranged at the bottom of second time punch forming device patrix, the position corresponding with the semi-circular recesses bottom second time punch forming device patrix on second time punch forming device counterdie top is provided with same semi-circular recesses, simultaneously at the both sides limited location block of second time punch forming device counterdie,
When second time punch forming device patrix down acts on, plate stamping is pressed into shaped piece and becomes a pipe, 4 hasps all realize interference fit simultaneously, at this moment progressive die down moves, a small rut is stamped out at the home position of hasp, make hasp that certain plastic deformation occur, play certain cementation, shapingly to complete.
2. forming method as claimed in claim 1, it is characterized in that, it is low-carbon steel plate that described plate stamping is pressed into shaped piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220449.4A CN103272960B (en) | 2013-06-04 | 2013-06-04 | Welding-free circular pipe forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220449.4A CN103272960B (en) | 2013-06-04 | 2013-06-04 | Welding-free circular pipe forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103272960A CN103272960A (en) | 2013-09-04 |
| CN103272960B true CN103272960B (en) | 2015-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310220449.4A Expired - Fee Related CN103272960B (en) | 2013-06-04 | 2013-06-04 | Welding-free circular pipe forming method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103272960B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506497A (en) * | 2013-10-16 | 2014-01-15 | 吉林博仁科技股份有限公司 | Hinge sleeve pipe and punching mould and production process of hinge sleeve pipe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1403823A (en) * | 1973-10-10 | 1975-08-28 | Carroll W M | Process of joining sheet metal edges and articles |
| US6745448B2 (en) * | 2000-02-04 | 2004-06-08 | Ricoh Company, Ltd. | Pipe body and forming method of the same |
| JP3943390B2 (en) * | 2001-12-27 | 2007-07-11 | テルモ株式会社 | Metal tubular body and manufacturing method thereof |
| JP2003190282A (en) * | 2001-12-27 | 2003-07-08 | Terumo Corp | Metal tubular body and its manufacturing method |
| CN1784289A (en) * | 2003-05-08 | 2006-06-07 | 普罗托特优伯股份有限公司 | Process for press forming metal tubes |
| JP2005007406A (en) * | 2003-06-17 | 2005-01-13 | Ricoh Co Ltd | Tubular body |
| JP2007203342A (en) * | 2006-02-02 | 2007-08-16 | Seiko Epson Corp | Method for manufacturing cylindrical shaft |
| JP5484874B2 (en) * | 2009-12-02 | 2014-05-07 | 株式会社マルナカ | Manufacturing method for engine mount metal pipe and manufacturing method for engine mount |
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2013
- 2013-06-04 CN CN201310220449.4A patent/CN103272960B/en not_active Expired - Fee Related
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| CN103272960A (en) | 2013-09-04 |
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Granted publication date: 20150617 Termination date: 20210604 |