CN105251792A - Arc guiding-in pipe drawing die - Google Patents
Arc guiding-in pipe drawing die Download PDFInfo
- Publication number
- CN105251792A CN105251792A CN201510696357.2A CN201510696357A CN105251792A CN 105251792 A CN105251792 A CN 105251792A CN 201510696357 A CN201510696357 A CN 201510696357A CN 105251792 A CN105251792 A CN 105251792A
- Authority
- CN
- China
- Prior art keywords
- arc
- welding bell
- length
- entrance
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004513 sizing Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 42
- 230000000875 corresponding Effects 0.000 claims description 3
- 230000000149 penetrating Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/06—Dies; Selection of material therefor; Cleaning thereof with adjustable section
Abstract
The invention discloses an arc guiding-in pipe drawing die with quantifiable all relevant parameters of an inlet segment. The arc guiding-in pipe drawing die comprises a pipe drawing die body. The pipe drawing die body is provided with a drawing forming hole penetrating the pipe drawing die body. The drawing forming hole comprises the inlet segment, a transition segment and a sizing segment which are jointed in sequence. The sizing segment is a cylindrical hole, the diameter of the cylindrical hole is d1, and the length a of the sizing segment accounts for 1/3-1/2 of the height H of the pipe drawing die body. The transition segment is a conical hole, the taper angle of the conical hole is alpha, and the length b of the transition segment is 1/3-1/2 of the length of the sizing segment. The inlet segment is an arc guiding-in hole, the diameter of the circular arc line of the outer edge of the arc guiding hole is d2, the length of the inlet segment is e, and the radius of the generatrix of the arc face of the arc guiding-in hole is R (the formula is shown in the specification). The arc guiding pipe drawing die is mainly used for reducing diameters of round metal pipes.
Description
Technical field
The drawing that the present invention relates in Metal Forming technical field is shaping, refers more particularly to the welding bell of circular pipe undergauge.
Background technology
Important fixture component when drawing mould is cold-drawn various metal tube, be widely used in various metal pipe material reducing or/and distortion production process in.For steel pipe, utilize drawing die to carry out cold drawn forming to steel pipe, have that stock utilization is high, energy consumption is low, properties of product are excellent, production efficiency is high and the feature such as with low cost.In drawing mould, the tubing cross sectional shape shaping by its drawing is different, can be divided into circular drawing mould and special-shaped drawing mould; Have linerless core by its drawing process, can be divided into again empty sinking drawing die (being called for short empty sinking mould) and lining core drawing die (being called for short lining core), lining core drawing die is matched by external mold and internal mold and jointly completes cold-drawn.In drawing industry, the external mold of empty sinking drawing die or lining core drawing die is referred to as drawing die (or being welding bell) usually.
As everyone knows, if the length of the openings of sizes of welding bell and entrance arranges unreasonable, contact area so between tubing and mould changes thereupon, there is unbalanced phenomena in the vertical and horizontal flowing of metal, thus it is second-rate to cause through the shaping round tube of its drawing, be mainly manifested in its linearity poor (exist bend in various degree), wall unevenness is even, fillet is unbalanced, size is unstable and the defect such as surface irregularity, occurs steel pipe fracture and cracking phenomena in drawing process what is more.
At present; for the design standard that welding bell is also ununified; it is all by rule of thumb that the openings of sizes of its entrance and the length of entrance are arranged; for the round tube of each model; when designing, all through repeated multiple times test, improvement, the process tested again, just ideal drawing die to can be obtained; this not only extends the process-cycle of mould, also add production cost.
Summary of the invention
Technical problem to be solved by this invention is: provide all quantifiable arc of a kind of relevant parameter of its entrance to import welding bell.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of arc imports welding bell, comprise: welding bell body, welding bell body offers run through welding bell body be drawn into nibs, this is drawn into the changeover portion that nibs comprises entrance, sizing section and connection entrance and sizing section;
Described sizing section is the cylindrical hole corresponding with the external diameter of the round metal tube after draw, its diameter d
1round metal tube external diameter after=draw, the length a of this sizing section accounts for 1/3 ~ 1/2 of described welding bell body height H;
Described changeover portion is bellmouth, and one end that the aperture of bellmouth is little is connected mutually with sizing section, and large one end, aperture is connected mutually with entrance, and the length b of changeover portion is 1/3 ~ 1/2 of the length of described sizing section;
Described entrance is arc entrance hole, the diameter d of the outer edge circular arc line of this arc entrance hole
2adapt with pipe before draw, if: the taper angle of described changeover portion bellmouth is α, and the length of entrance is e,
Then: the radius of the bus of this arc entrance hole arcwall face
As a kind of preferred version, import in welding bell at described arc, the conicity angles alpha of described changeover portion bellmouth between 3 ~ 5 degree, the diameter d of the outer edge circular arc line of described arc entrance hole
2larger than the external diameter of pipe before draw 3 ~ 4 millimeters.
As a kind of preferred version, import in welding bell at described arc, the nibs that is drawn into of described welding bell body has outlet section in the arranged outside of sizing section, and this outlet section is outwardly bellmouth.
As a kind of preferred version, import in welding bell at described arc, the taper angle β of described outlet section is between 30 ~ 45 degree.
As a kind of preferred version, import in welding bell at described arc, the length c of described outlet section accounts for and is wholely drawn into 5.5 ~ 6.5% of nibs length.
As a kind of preferred version, import in welding bell at described arc, described welding bell body is cylindrical, its diameter d
3>=2d
1.
The invention has the beneficial effects as follows: welding bell of the present invention, the relevant parameter of its entrance can quantize, thus make its designing and making all very simple, so just greatly reduce the process-cycle, save production cost, and the tubing glacing flatness shaping through its draw is high, smooth outer surface, outer-diameter accuracy stable.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram that arc of the present invention imports welding bell.
Reference numeral in figure is: 2, welding bell body, I, entrance, II, excessively section, III, sizing section, IV, outlet section.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe a kind of specific embodiments arc of metal circular tube undergauge being imported welding bell of the present invention in detail.
As shown in Figure 1, a kind of arc of the present invention imports welding bell, comprise: welding bell body 2, welding bell body 2 offers run through welding bell body 2 be drawn into nibs, this is drawn into nibs and comprises the entrance I, changeover portion II, sizing section III and the outlet section IV that are connected mutually successively; Described sizing section III is the cylindrical hole corresponding with the external diameter of the round metal tube after draw, its diameter d
1round metal tube external diameter after=draw, the length a of this sizing section III accounts for 1/3 ~ 1/2 of described welding bell body 2 height H (being namely drawn into the length of nibs); Described changeover portion II is bellmouth, conicity angles alpha is usually between 3 ~ 5 degree, one end that the aperture of bellmouth is little is connected mutually with described sizing section III, and large one end, aperture is connected mutually with described entrance I, and the length b of described changeover portion II is 1/3 ~ 1/2 of the length of described sizing section III; Described entrance I is arc entrance hole, the diameter d of the outer edge circular arc line of this arc entrance hole
2adapt with pipe before draw, under normal circumstances, the diameter d of the outer edge circular arc line of described arc entrance hole
2larger than the external diameter of pipe before draw 3 ~ 4 millimeters, if: the length of entrance I is e,
Then: the radius of the bus of this arc entrance hole arcwall face
In the present embodiment, described outlet section IV is outwardly bellmouth, and its taper angle β is between 30 ~ 45 degree, and its length c accounts for and is wholely drawn into 5.5 ~ 6.5% of nibs length; Described welding bell body 2 is cylindrical, in order to ensure that described welding bell body 2 has enough intensity, the diameter d of welding bell body 2
3>=2d
1.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations done according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (6)
1. an arc imports welding bell, comprise: welding bell body, it is characterized in that: described welding bell body offers run through welding bell body be drawn into nibs, this is drawn into the changeover portion that nibs comprises entrance, sizing section and connection entrance and sizing section;
Described sizing section is the cylindrical hole corresponding with the external diameter of the round metal tube after draw, its diameter d
1round metal tube external diameter after=draw, the length a of this sizing section accounts for 1/3 ~ 1/2 of described welding bell body height H;
Described changeover portion is bellmouth, and one end that the aperture of bellmouth is little is connected mutually with sizing section, and large one end, aperture is connected mutually with entrance, and the length b of changeover portion is 1/3 ~ 1/2 of the length of described sizing section;
Described entrance is arc entrance hole, the diameter d of the outer edge circular arc line of this arc entrance hole
2adapt with pipe before draw, if: the taper angle of described changeover portion bellmouth is α, and the length of entrance is e, then: the radius of the bus of this arc entrance hole arcwall face
2. arc according to claim 1 imports welding bell, it is characterized in that: the conicity angles alpha of described changeover portion bellmouth between 3 ~ 5 degree, the diameter d of the outer edge circular arc line of described arc entrance hole
2larger than the external diameter of pipe before draw 3 ~ 4 millimeters.
3. arc according to claim 2 imports welding bell, it is characterized in that: the nibs that is drawn into of described welding bell body has outlet section in the arranged outside of sizing section, and this outlet section is outwardly bellmouth.
4. taper welding bell according to claim 3, is characterized in that: the taper angle β of described outlet section is between 30 ~ 45 degree.
5. arc according to claim 4 imports welding bell, it is characterized in that: the length c of described outlet section accounts for and is wholely drawn into 5.5 ~ 6.5% of nibs length.
6. import welding bell according to the arc one of claim 1 to 5 Suo Shu, it is characterized in that: described welding bell body is cylindrical, its diameter d
3>=2d
1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510696357.2A CN105251792A (en) | 2015-10-14 | 2015-10-23 | Arc guiding-in pipe drawing die |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015106621908 | 2015-10-14 | ||
| CN201510662190 | 2015-10-14 | ||
| CN201510696357.2A CN105251792A (en) | 2015-10-14 | 2015-10-23 | Arc guiding-in pipe drawing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105251792A true CN105251792A (en) | 2016-01-20 |
Family
ID=55091888
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510696357.2A Pending CN105251792A (en) | 2015-10-14 | 2015-10-23 | Arc guiding-in pipe drawing die |
| CN201520829721.3U Active CN205183360U (en) | 2015-10-14 | 2015-10-23 | Arc channels into tube drawing mould |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520829721.3U Active CN205183360U (en) | 2015-10-14 | 2015-10-23 | Arc channels into tube drawing mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105251792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675946A (en) * | 2018-12-28 | 2019-04-26 | 张家港华程特种材料股份有限公司 | Octagon drawing die |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251792A (en) * | 2015-10-14 | 2016-01-20 | 江苏华程工业制管股份有限公司 | Arc guiding-in pipe drawing die |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129052A (en) * | 1977-10-13 | 1978-12-12 | Fort Wayne Wire Die, Inc. | Wire drawing die and method of making the same |
| JP2012187594A (en) * | 2011-03-09 | 2012-10-04 | Kanai Hiroaki | Wire drawing die |
| CN203330270U (en) * | 2013-07-02 | 2013-12-11 | 山东墨龙石油机械股份有限公司 | Pipe end hot hole shrinkage die |
| CN203678890U (en) * | 2013-12-25 | 2014-07-02 | 隆昌山川精密焊管有限责任公司 | Hard alloy drawing die |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
| CN205183360U (en) * | 2015-10-14 | 2016-04-27 | 江苏华程工业制管股份有限公司 | Arc channels into tube drawing mould |
-
2015
- 2015-10-23 CN CN201510696357.2A patent/CN105251792A/en active Pending
- 2015-10-23 CN CN201520829721.3U patent/CN205183360U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129052A (en) * | 1977-10-13 | 1978-12-12 | Fort Wayne Wire Die, Inc. | Wire drawing die and method of making the same |
| JP2012187594A (en) * | 2011-03-09 | 2012-10-04 | Kanai Hiroaki | Wire drawing die |
| CN203330270U (en) * | 2013-07-02 | 2013-12-11 | 山东墨龙石油机械股份有限公司 | Pipe end hot hole shrinkage die |
| CN203678890U (en) * | 2013-12-25 | 2014-07-02 | 隆昌山川精密焊管有限责任公司 | Hard alloy drawing die |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
| CN205183360U (en) * | 2015-10-14 | 2016-04-27 | 江苏华程工业制管股份有限公司 | Arc channels into tube drawing mould |
Non-Patent Citations (1)
| Title |
|---|
| 韩观昌等: "《小型无缝钢管生产（下册）》", 31 May 1999, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675946A (en) * | 2018-12-28 | 2019-04-26 | 张家港华程特种材料股份有限公司 | Octagon drawing die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205183360U (en) | 2016-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |
|
| RJ01 | Rejection of invention patent application after publication |