CN105312343B - A kind of square shape tube Die - Google Patents
A kind of square shape tube Die Download PDFInfo
- Publication number
- CN105312343B CN105312343B CN201510661403.5A CN201510661403A CN105312343B CN 105312343 B CN105312343 B CN 105312343B CN 201510661403 A CN201510661403 A CN 201510661403A CN 105312343 B CN105312343 B CN 105312343B
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- China
- Prior art keywords
- arc
- core rod
- bushing
- curved surface
- entrance
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- 238000004513 sizing Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 235000010599 Verbascum thapsus Nutrition 0.000 claims description 3
- 244000178289 Verbascum thapsus Species 0.000 claims description 3
- 230000008676 import Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003490 calendering Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of quantifiable square shape tube Die of relevant parameter of entrance, including：It is bushing and be arranged on it is bushing in core rod, offer on core rod and be rolled into type hole, this, which is rolled into type hole, includes：Entrance and sizing section, sizing section include：Spacing between four flat faces and four corner arc surfaces, a pair of relative flat faces is L, and the radius of curvature of corner arc surface is R1, the length L of the sizing section33For whole core rod thickness L320.6~24.6%；Described entrance includes：Four import arc-shaped curved surface and four entrance corner curved surfaces；The distance between outside edge line summit of a pair of importings arc-shaped curved surface facing each other is：Wherein, 1.71≤k1≤1.76；Import the wire of arc-shaped curved surface to overlap for straight line, with being rolled into the center line of type hole, the bus for importing arc-shaped curved surface is circular arc.Present invention is mainly used for round steel pipe is drawn into square steel pipe.
Description
Technical field
The present invention relates to the pattern that is rolled into Metal Forming technical field, more particularly to by gold such as round steel pipes
Category pipe drawing is rolled into pattern into square shape tube.
Background technology
Important fixture component when drawing mould (also referred to as calendaring mould) is cold-drawn various metal tubes, widely
Apply in the metal pipe material such as steel pipe reducing or/and the production process of deformation.Cold drawn forming, tool are carried out to steel pipe using drawing die
The features such as having that stock utilization is high, energy consumption is low, properties of product are excellent, production efficiency is high and be with low cost.In drawing mould, by it
The tubing cross sectional shape of drawing shaping is different, can be divided into circular drawing mould and special-shaped drawing mould；By having in its drawing process
Linerless core, can be divided into empty sinking drawing die (abbreviation empty sinking mould) and lining core drawing die (abbreviation lining core mould) again, lining core drawing die by
External mold and internal model match completes cold-drawn jointly.In drawing industry, the external mold of empty sinking drawing die or lining core drawing die is generally united
Referred to as drawing die (or Die).
If it is well known that the openings of sizes of drawing die and the length of entrance set unreasonable, then tubing and mould
Between contact area change therewith, be present unbalanced phenomena in the flowing of the vertical and horizontal of metal, be drawn into so as to cause through it
The square tube of type it is second-rate, be mainly manifested in its linearity poor (there is different degrees of bending), wall unevenness, fillet
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 ununified design standard of shape tube Die, the openings of sizes of its entrance and entrance
Length set all be by rule of thumb, for the square tube of each model, in design, will by repeated multiple times experiment,
The process improve, tested again, can just obtain ideal drawing die, this not only extends the process-cycle of mould, also increases
Production cost.
The content of the invention
The technical problems to be solved by the invention are：A kind of quantifiable square of the relevant parameter of its entrance is provided
Shape tube Die.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of square shape tube Die, bag
Include：It is bushing and be arranged on it is bushing in core rod, offer on core rod and be rolled into type hole through core rod, this is rolled into type hole bag
Include：Entrance and sizing section, described bushing one end are provided with the opening for installing core rod, and described core rod is inlayed from the opening
Be embedded in it is bushing in, the bushing other end is provided with end wall, is offered on the end wall with being rolled into the outlet that type hole is engaged；
Described sizing section includes：Respectively with four straight flanges of square steel tubes cross-sectional profiles and being connected two-by-two
Four corner circular arcs of adjacent straight flange corresponding four flat faces and four corner arc surfaces, a pair of flat faces facing each other
Between spacing be L, the radius of curvature of four corner arc surfaces is R1, the length L of the sizing section33For whole core rod thickness L3
20.6~24.6%；
Described entrance includes：The importing arc-shaped curved surface of four flat face linkings corresponding to sizing section, four connections
The adjacent entrance corner curved surface for importing arc-shaped curved surface two-by-two, the radius of curvature of the outside edge line of entrance corner curved surface is R2=1.5
~2.5 times of R1；The distance between outside edge line summit of a pair of importings arc-shaped curved surface facing each other is：
Wherein, 1.71≤k1≤1.76；
The wire of four described importing arc-shaped curved surfaces is same straight line, the straight line and the center line weight for being rolled into type hole
Close, the bus for importing arc-shaped curved surface is circular arc, and the circular arc is determined by 3 points, first point：The outside edge line of the importing arc-shaped curved surface
Summit, second point：Respective point on the edge line of the connection entrance of sizing section, thirdly：In the horizontal direction, from second
The distance of point is L310.4~12.4%, in vertical direction, thirdly with the line and the angle of horizontal direction of second point
For 3~20 degree.
As a kind of preferred scheme, in described square shape tube Die, the type hole that is rolled into of the core rod is set
Connection sizing section and the outlet section of bushing outlet are equipped with, the outlet section includes：Four are mutually connected with the flat face of sizing section
Exit ramp and four outlet corner curved surfaces for connecting adjacent outlets inclined-plane two-by-two.
It is used as a kind of preferred scheme, in described square shape tube Die, described outlet section L32Account for described
Core rod thickness L32.5~4.5%.
As a kind of preferred scheme, in described square shape tube Die, the bushing outlet includes：Four
What exit ramp corresponding to core rod outlet section was mutually connected exports inclined-plane and connects four export on adjacent export inclined-plane two-by-two
Corner curved surface.
It is used as a kind of preferred scheme, in described square shape tube Die, the thickness L of the bushing end wall31For
Core rod thickness L39.3~13.3%.
As a kind of preferred scheme, in described square shape tube Die, the end face of the bushing opening end surpasses
Go out the entrance end face of core rod, between the two apart from L35For core rod thickness L32.1~2.5%.
As a kind of preferred scheme, in described square shape tube Die, described bushing lateral surface is close
The big taper surface of its open one end external diameter, its conicity angles alpha is between 3~4 °.
The beneficial effects of the invention are as follows：Die of the present invention, the relevant parameter of its entrance can quantify, from
And cause its design and make all very simple, the process-cycle is so greatly lowered, production cost is saved, moreover, through
The tubing glacing flatness height, smooth outer surface, outer-diameter accuracy for crossing its calendering formation are stable.In addition, the present invention is also by will be bushing
Lateral wall sets tapered, and by the thickness control of bushing end wall between the 9.3~13.3% of core rod thickness, both ensure that edge
The intensity of set, saves bushing material cost again.
Brief description of the drawings
Fig. 1 is the structural representation of square shape tube Die of the present invention.
Fig. 2 is the cross section structure diagram in K-K directions in Fig. 1.
Fig. 3 is the cross-sectional view of square steel tubes of the present invention.
References of the Fig. 1 into Fig. 3 be：1st, it is bushing, 11, lateral surface, 12, end wall, 121, outlet, 2, core rod, 21, enter
Mouthful section, 211, import arc-shaped curved surface, 212, entrance corner curved surface, 22, sizing section, 23, outlet section, 3, square steel tubes,
31st, straight flange, 32, corner circular arc.
Embodiment
Below in conjunction with the accompanying drawings, for the square shape tube Die of production square steel tubes 3 as shown in Figure 3
Exemplified by specific embodiments of the present invention are described in detail.
As depicted in figs. 1 and 2, a kind of square shape tube Die of the present invention, including：Bushing 1 and set
Offered on core rod 2 in bushing 1, core rod 2 and be rolled into type hole through core rod 2, this, which is rolled into type hole, includes：Entrance 21
With sizing section 22 and outlet section 23, described bushing 1 one end is provided with the opening for installing core rod 2, described core rod 2 from this
Opening is embedded in bushing 1, and bushing 1 other end is provided with end wall 12, offers and be rolled into type hole matching on the end wall 12
The outlet 121 of conjunction；Described sizing section 22 includes：Respectively with four straight flanges 31 of the square cross-sectional profiles of steel tubes 3 with
And corresponding four flat faces and four corner arc surfaces of four corner circular arcs 32 of connection adjacent straight flange 31 two-by-two, two two-phases
To a pair of flat faces between spacing be L, the radius of curvature of four corner arc surfaces is R1, with square steel tubes 3
Wall thickness T-phase when (it is so-called quite, refer to tolerance allow in the range of, T=R1), the length L of the sizing section33For whole core rod
Thickness L320.6~24.6%；Described outlet section 23 includes：Four outlets for being mutually connected with the flat face of sizing section 22
Inclined-plane and four outlet corner curved surfaces for connecting adjacent outlets inclined-plane two-by-two, the length L of the outlet section32Account for described mould
Core thickness L32.5~4.5%；Described entrance 21 includes：The importing of four flat face linkings corresponding to sizing section 22
Arc-shaped curved surface 211, four connection two-by-two it is adjacent import arc-shaped curved surface 211 entrance corner curved surface 212, entrance corner curved surface 212
Outside edge line radius of curvature be R2=1.5~2.5 times of R1, most preferably 2 times of R1；A pair of importings arc facing each other
The distance between outside edge line summit of curved surface 211 is：
Wherein, 1.71≤k1≤ 1.76, k1It is optimal when=1.72；
The wire of four described importing arc-shaped curved surfaces 211 is same straight line, the straight line and the center for being rolled into type hole
Line is overlapped, and the bus for importing arc-shaped curved surface 211 is circular arc, and the circular arc determines that be A points by 3 points at first point：The importing arc is bent
The summit of the outside edge line in face 211, second point is B points：Respective point on the edge line of the connection entrance of sizing section, thirdly
That is C points：In the horizontal direction, it is B point distances L from second point2For L310.4~12.4%, in vertical direction, thirdly
It is 3~20 degree, the length L of the entrance 21 with the line of second point and the angle β of horizontal direction34Account for whole core rod thickness
L363~69%；Bushing 1 outlet includes：Four to leading that the corresponding exit ramp of the outlet section 23 of core rod 2 is mutually connected
Go out inclined-plane and connect four export corner curved surfaces on adjacent export inclined-plane two-by-two；The thickness L of bushing 1 end wall 12131For core rod 2
Thickness L39.3~13.3%；The end face of bushing 1 opening end exceeds the end face of the entrance 21 of core rod 2, between the two
Apart from L35For core rod thickness L32.1~2.5%；Bushing 1 lateral surface is that, close to the big taper surface of its open one end external diameter, it is bored
Angle α is spent between 3~4 °.
In summary, only presently preferred embodiments of the present invention, not for limiting the scope that the present invention is implemented, it is all according to
The equivalent changes and modifications that shape, construction, feature and spirit described in scope of the invention as claimed are made, all should be included in this
In the right of invention.
Claims (6)
1. a kind of square shape tube Die, including：It is bushing and be arranged on it is bushing in core rod, it is characterised in that：It is described
Core rod on offer and be rolled into type hole through core rod, this, which is rolled into type hole, includes：Entrance and sizing section, it is described bushing
One end is provided with the opening for installing core rod, described core rod from the opening be embedded in it is bushing in, the bushing other end is set
There is end wall, offered on the end wall with being rolled into the outlet that type hole is engaged；
Described sizing section includes：Respectively with four straight flanges of square steel tubes cross-sectional profiles and being connected adjacent two-by-two
Between four corner circular arcs of straight flange corresponding four flat faces and four corner arc surfaces, a pair of flat faces facing each other
Spacing be L, the radius of curvature of four corner arc surfaces is R1, the length of the sizing section is whole core rod thickness L320.6
~24.6%；
Described entrance includes：The importing arc-shaped curved surface of four corresponding to sizing section flat faces linkings, four connections are two-by-two
The adjacent entrance corner curved surface for importing arc-shaped curved surface, the radius of curvature of the outside edge line of entrance corner curved surface is R2=1.5~2.5
R again1；The distance between outside edge line summit of a pair of importings arc-shaped curved surface facing each other is：
Wherein, 1.71≤k1≤1.76；
The wire of four described importing arc-shaped curved surfaces is same straight line, and the straight line is overlapped with being rolled into the center line of type hole,
The bus for importing arc-shaped curved surface is circular arc, and the circular arc is determined by 3 points, first point：The top of the outside edge line of the importing arc-shaped curved surface
Point, second point：Respective point on the edge line of the connection entrance of sizing section, thirdly：In the horizontal direction, from second point
Distance is L310.4~12.4%, be thirdly 3 with the line of second point and the angle of horizontal direction in vertical direction~
20 degree；The type hole that is rolled into of the core rod is provided with connection sizing section and the outlet section of bushing outlet, and the outlet section includes：Four
The individual exit ramp being mutually connected with the flat face of sizing section and four outlet corners for being connected adjacent outlets inclined-plane two-by-two are bent
Face.
2. square shape tube Die according to claim 1, it is characterised in that：Described outlet section accounts for described
Core rod thickness L32.5~4.5%.
3. square shape tube Die according to claim 1, it is characterised in that：The bushing outlet includes：Four
Four of export inclined-plane that individual exit ramp corresponding to core rod outlet section is mutually connected and connection adjacent export inclined-plane two-by-two lead
Go out corner curved surface.
4. square shape tube Die according to claim 3, it is characterised in that：The thickness of the bushing end wall is mould
Core thickness L39.3~13.3%.
5. square shape tube Die according to claim 4, it is characterised in that：The end face of the bushing opening end surpasses
Go out the entrance end face of core rod, distance between the two is core rod thickness L32.1~2.5%.
6. the square shape tube Die according to one of claim 1 to 5, it is characterised in that：Described bushing outside
Face is that its conicity angles alpha is between 3~4 ° close to the big taper surface of its open one end external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661403.5A CN105312343B (en) | 2015-10-14 | 2015-10-14 | A kind of square shape tube Die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661403.5A CN105312343B (en) | 2015-10-14 | 2015-10-14 | A kind of square shape tube Die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105312343A CN105312343A (en) | 2016-02-10 |
| CN105312343B true CN105312343B (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510661403.5A Active CN105312343B (en) | 2015-10-14 | 2015-10-14 | A kind of square shape tube Die |
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| Country | Link |
|---|---|
| CN (1) | CN105312343B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734276B (en) * | 2017-03-30 | 2018-08-24 | 绵阳晟昊光电科技有限公司 | A kind of pipe change one-time formed automatic draw-off gear of square tube |
| CN114011897B (en) * | 2021-11-01 | 2024-03-05 | 湖南中创空天新材料股份有限公司 | Extrusion die and working belt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07195115A (en) * | 1993-12-29 | 1995-08-01 | Yoshikatsu Waratani | Device for drawing tube |
| CN2231949Y (en) * | 1995-09-07 | 1996-07-31 | 王文斌 | Quadrilateral spiral section cold drawing die set |
| CN101708507A (en) * | 2009-12-05 | 2010-05-19 | 衡阳华菱钢管有限公司 | Compound external mold for cold drawing steel tube |
| CN104741400A (en) * | 2015-04-13 | 2015-07-01 | 江苏华程工业制管股份有限公司 | Inequilateral empty sinking mold for rectangular specially-shaped steel pipe |
| CN104785559A (en) * | 2015-04-13 | 2015-07-22 | 张家港市华程异型钢管有限公司 | Square special-shaped steel tube equilateral empty sinking die |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1810151C (en) * | 1991-06-18 | 1993-04-23 | Витебское отделение Института физики твердого тела и полупроводников АН БССР | Drawing die for deforming products, mainly of lead-tin alloys |
-
2015
- 2015-10-14 CN CN201510661403.5A patent/CN105312343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07195115A (en) * | 1993-12-29 | 1995-08-01 | Yoshikatsu Waratani | Device for drawing tube |
| CN2231949Y (en) * | 1995-09-07 | 1996-07-31 | 王文斌 | Quadrilateral spiral section cold drawing die set |
| CN101708507A (en) * | 2009-12-05 | 2010-05-19 | 衡阳华菱钢管有限公司 | Compound external mold for cold drawing steel tube |
| CN104741400A (en) * | 2015-04-13 | 2015-07-01 | 江苏华程工业制管股份有限公司 | Inequilateral empty sinking mold for rectangular specially-shaped steel pipe |
| CN104785559A (en) * | 2015-04-13 | 2015-07-22 | 张家港市华程异型钢管有限公司 | Square special-shaped steel tube equilateral empty sinking die |
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| Publication number | Publication date |
|---|---|
| CN105312343A (en) | 2016-02-10 |
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Address after: Suzhou City, Jiangsu province 215611 village Tangqiao town of Zhangjiagang City Han Zhangjiagang Huacheng special materials Limited by Share Ltd Applicant after: ZHANGJIAGANG HUACHENG SPECIAL STEEL CO.,LTD. Address before: Suzhou City, Jiangsu province 215611 village Tangqiao town of Zhangjiagang City Han Zhangjiagang Huacheng special shaped steel tube Co. Applicant before: ZHANGJIAGANG HUACHENG SPECIAL SHAPE TUBE Co.,Ltd. |
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Address after: No. 1, Chuangxing Road, Fenghuang Town, Zhangjiagang City, Suzhou City, Jiangsu Province, 215600 Patentee after: Suzhou Huachuang special material Co.,Ltd. Address before: Zhangjiagang Huacheng Special Materials Co., Ltd., Hanshan Village, Tangqiao Town, Zhangjiagang City, Suzhou City, Jiangsu Province, 215611 Patentee before: ZHANGJIAGANG HUACHENG SPECIAL STEEL CO.,LTD. |
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