CN102699092B - Vibration type seamless three-way pipe cold extrusion forming die - Google Patents
Vibration type seamless three-way pipe cold extrusion forming die Download PDFInfo
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- CN102699092B CN102699092B CN201210179598.6A CN201210179598A CN102699092B CN 102699092 B CN102699092 B CN 102699092B CN 201210179598 A CN201210179598 A CN 201210179598A CN 102699092 B CN102699092 B CN 102699092B
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Abstract
A vibration type seamless three-way pipe cold extrusion forming die comprises an upper die (1) and a lower die (12), wherein a forming hole (13) used for mounting a third extrusion tap is formed in the lower die (12), and the axial line of the forming hole (13) intersects with the axial line of a to-be-extruded straight pipe. The die is characterized in that the lower die (12) is formed by assembling an upper half lower die (3) and a lower half lower die (6); the lower part of the lower half lower die (6) is supported on an end surface bearing (9); the lower half lower die (6) and the upper half lower die (3) can rotate oppositely around the central axis of the lower die; an eccentric vibration mechanism (14) is connected to the lower half lower die (6) and can enable the lower half lower die (6) to vibrate; and a partition sleeve (5) capable of preventing metal deformed by extrusion from entering the junction surface of the upper half lower die (3) and the lower half lower die (6) is mounted in the forming hole (13). The advantages of the eccentric vibration mechanism in cold extrusion processing of a seamless three-way pipe are fully utilized, so that based on the effect of guaranteeing high hardness, high rigidity and excellent fatigue resistance of the three-way pipe, the service life of the extrusion tap is greatly prolonged, the extrusion torque is reduced, and the processing quality of the three-way pipe is remarkably improved.
Description
Technical field
The present invention relates to a kind of pipeline processing mould, especially a kind of mould that utilizes straight tube cold extrusion to form three-way pipe, specifically can make counterdie produce vibration by a small margin and be beneficial to reduce a propelling resistance, improve thread forming tap service life, reduce extrusion torque, improve the oscillating mode seamless T pipe connection cold extrusion molding mould of the crudy of three-way pipe simultaneously.
Background technology
At present, three-way pipe is widely used in the pipe network of carrying liquid, gas, agricultural irrigation, is one of linkage unit the most basic in pipe network.Along with developing rapidly of China Petroleum, agricultural, the requirement of Pipe jointing part is increasing, and pipe fitting kind is also more and more, this has higher requirement to the performance of three-way pipe and Anti-fatigue manufacture technology thereof, not only require the formed precision of three-way pipe high, equipment error is little, strength and stiffness are high, wall thickness is even, and requires three-way pipe should have high-quality surface integrity.Because the pipe fitting that adopts casting method to produce is with tissue defects such as pore, sand holes, so, for middle high-pressure pipe-line system, mostly use high-quality seamless steel pipe cold-extrusion shaping connection pipe fitting.For this research and production on the one hand, domestic still in the starting stage.
At present, known to three-way pipe cold extrusion on three-way forming machine, process, seamless straight steel pipe is contained on mould, and reinforcing makes upper and lower mould closed on upper die and lower die, then on the push rod of two ends, apply equal power, push rod is synchronously pushed steel pipe, and in extrusion process, steel pipe metal occurs to flow, thereby forms three-way pipe.But asymmetric due to metal flow in pressure process, easily assembles metal at the upside of steel pipe.This just easily forms metal folding crackle at outer surface of steel tube on the one hand; Reduce on the other hand the inner space of three-way pipe, thereby hindered flowing of three-way pipe internal gas or liquid; Moreover, also easily make the arm cross section wall thickness ununiformity of three-way pipe even, even at thin-walled place, produce fracture, thereby causing the pipe of product to scrap.
Therefore, up to the present, in seamless T pipe connection cold extrusion process, also exist that steel pipe cross section wall thickness ununiformity is even, outer surface of steel tube exists the problem that has accumulation of metal in metal fold, pipe.There is no a kind of secondary process system that can improve seamless T pipe connection cold-extrusion processing quality practical, simple in structure.
Summary of the invention
The object of the invention is, outer surface of steel tube even for the steel pipe cross section wall thickness ununiformity existing in existing seamless T pipe connection cold extrusion process and have the problem that has accumulation of metal in metal fold, pipe, design and a kind ofly can be reduced to form drag, improve forming quality, overcome the oscillating mode seamless T pipe connection cold extrusion molding mould of forming defects.
Technical scheme of the present invention is:
A kind of oscillating mode seamless T pipe connection cold extrusion molding mould, comprise patrix 1 and counterdie 12, straight tube 2 to be extruded is between patrix 1 and counterdie 12, counterdie 12 is provided with axial line and straight tube axes intersect to be extruded, for the shaped hole 13 of the 3rd crush cones is installed, it is characterized in that described counterdie 12 is coordinated and formed by first counterdie 3 and second counterdie 6, the lower support of second described counterdie 6 is on end face bearing 9, second counterdie 6 can relatively rotate around the central shaft of counterdie with first counterdie 3, second described counterdie 6 is connected with and makes its vibrative eccentric vibration mechanism 14, thereby being delivered to first counterdie 3, the vibration that second counterdie 6 produces eccentric vibration mechanism 14 make counterdie there is the vibration by a small margin around central shaft, thereby reduce the propelling resistance in three-way pipe processing, improve the service life of thread forming tap, reduce extrusion torque, improve the crudy of three-way pipe simultaneously, in described shaped hole 13, be provided with and prevent that crimp metal from entering the spacer 5 between first counterdie 3 and second counterdie 6 faying faces.
First described counterdie 3 inserts in second counterdie 6, the ball 4 that uses both to rotate is installed between the outer ring surface of first counterdie 3 insertion ends and the groove internal face of second counterdie 6, between first counterdie 3 and the structure of second counterdie 6, is marked with lubricating oil or lubricant grease.
Described eccentric vibration mechanism 14 is comprised of eccentric wheel 7 and drive motors 10, and eccentric wheel 7 is arranged in the direction recess 8 of second counterdie 6 bottoms, and eccentric wheel 7 is directly or indirectly arranged on the output shaft of drive motors 10.
Described direction recess 8 is kidney-shaped structure, and the external diameter of the width of kidney-shaped structure and eccentric wheel 7 matches.
Described spacer 5 is flange arrangement, and its flange face is fixedly linked by screw and second counterdie.
The axial line of described shaped hole 13 or angle vertical with the axial line of straight tube 2 to be extruded is less than 90 degree.
Beneficial effect of the present invention:
(1) fully absorbed the advantage of eccentric wheel vibrating mechanism in seamless T pipe connection cold extrusion processing, guaranteeing on the basis of the high rigidity of three-way pipe, high rigidity and good anti-fatigue performance, greatly improved the service life of thread forming tap and reduced extrusion torque, having significantly improved the crudy of three-way pipe simultaneously.Experimental results show that under equal conditions and can be reduced to form drag more than 30%, extend thread forming tap service life more than 25%, and presentation quality row is to significantly improving, the steel pipe cross section wall thickness uniformity remains on more than 95%, outer surface of steel tube is without substantially there not being accumulation of metal phenomenon in metal fold, pipe.
(2) it is simple that the present invention also has mechanism, and flexible operation is convenient to the advantage realizing.
(3) equipment of the present invention can be directly installed on existing three-way forming machine, thereby has small investment, the advantage of instant effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B view of Fig. 1.
Fig. 4 is the structural representation of counterdie firm banking of the present invention.
Fig. 5 is the structural representation of motor mount of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Figure 1-5.
A kind of oscillating mode seamless T pipe connection cold extrusion molding mould, comprise patrix 1 and counterdie 12, straight tube 2(seamless steel pipe to be extruded) between patrix 1 and counterdie 12, insert in straight tube 2 to be extruded straight-through thread forming tap left and right between patrix 1 and counterdie 2 from Fig. 1, counterdie 12 is provided with axial line and straight tube axes intersect to be extruded, for the shaped hole 13 of the 3rd thread forming tap is installed, when pushing the three-way pipe of vertical stratification, two described axial lines are mutually vertical, as shown in Figure 1, when described two axial line out of plumb, form only trousers shape three-way pipe or tree Y-branch fitting pipe (not shown).Described counterdie 12 is coordinated and is formed by first counterdie 3 and second counterdie 6, the lower support of second described counterdie 6 can adopt thrust roller bearing at end face bearing 9() on, end face bearing 9 is arranged on (as Fig. 4) on base 11, second counterdie 6 can relatively rotate around the central shaft of counterdie with first counterdie 3, second described counterdie 6 is connected with and makes its vibrative eccentric vibration mechanism 14, thereby being delivered to first counterdie 3, the vibration that second counterdie 6 produces eccentric vibration mechanism 14 make counterdie there is the vibration by a small margin around central shaft, thereby reduce the propelling resistance in three-way pipe processing, improve the service life of thread forming tap, reduce extrusion torque, improve the crudy of three-way pipe simultaneously, in described shaped hole 13, be provided with and prevent that crimp metal from entering the spacer 5 between first counterdie 3 and second counterdie 6 faying faces, in order to make spacer 5 can be fixed in counterdie, spacer 5 can be designed to flange arrangement, its flange face is fixedly linked by screw and second counterdie.
For the ease of first counterdie 3, inserting second counterdie 6 can relatively rotate, reduce rotary resistance, can adopt first described counterdie 3 is inserted in second counterdie 6, the structure of the ball 4 that uses both rotations is installed simultaneously between the outer ring surface of first counterdie 3 insertion ends and the groove internal face of second counterdie 6, as shown in Figure 3, between first counterdie 3 and the structure of second counterdie 6, be marked with lubricating oil or lubricant grease.
Concrete methods of realizing of the present invention is:
First, in seamless T pipe connection cold extrusion process, seamless steel pipe 2 is installed between patrix 1 and counterdie 3
Secondly, choose motor 10 as the vibration source of auxiliary vibration processing, by its by bolted on box style substructure 11, its output shaft connects an eccentric wheel 7.
The 3rd, the bed die of three-way pipe is divided into first counterdie 3 and second counterdie 6 that can mutually rotate, ball 4 and lubricating fluid in gap between two parts, have been added, and utilize spacer 5 to prevent from pushing mobile material to enter in the gap between first counterdie and second counterdie second counterdie bolted of spacer 5 and counterdie.Three-way pipe cold extrusion die is fixed on box style substructure 11 by thrust roller bearing 9, and mould can freely be rotated around central shaft.
The 4th, in the bottom of second counterdie of three-way pipe cold extrusion, open a kidney-shaped groove 8, adjust groove to suitable position.
The 5th, eccentric wheel 7 is fixed in the groove 8 of mold base, adjust the eccentric suitable position that takes turns to.
The 6th, during motor 10 work, be with movable eccentric wheel 7 rotations, the large radius of eccentric wheel is surveyed groove 8 walls are had to effect of impact, in every twice knockout process, eccentric wheel, owing to impinging upon respectively two surveys up and down of groove walls, once turns clockwise the latter half 6 of counterdie, and another time is for being rotated counterclockwise, thereby the latter half that makes counterdie is done vibration by a small margin, and the frequency of vibration equals the speed of motor 10.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (6)
1. an oscillating mode seamless T pipe connection cold extrusion molding mould, comprise patrix (1) and counterdie (12), straight tube to be extruded (2) is positioned between patrix (1) and counterdie (12), counterdie (12) is provided with axial line and straight tube axes intersect to be extruded, for the shaped hole (13) of the 3rd crush cones is installed, it is characterized in that described counterdie (12) is coordinated and formed by first counterdie (3) and second counterdie (6), the lower support of described second counterdie (6) is on end face bearing (9), second counterdie (6) can relatively rotate around the central shaft of counterdie with first counterdie (3), described second counterdie (6) is connected with and makes its vibrative eccentric vibration mechanism (14), the vibration that second counterdie (6) produces eccentric vibration mechanism (14) is delivered to first counterdie (3) thereby makes counterdie have the vibration around central shaft, thereby reduce the propelling resistance in three-way pipe processing, improve the service life of thread forming tap, reduce extrusion torque, improve the crudy of three-way pipe simultaneously, in described shaped hole (13), be provided with and prevent that crimp metal from entering the spacer (5) between first counterdie (3) and second counterdie (6) faying face.
2. oscillating mode seamless T pipe connection cold extrusion molding mould according to claim 1, it is characterized in that described first counterdie (3) inserts in second counterdie (6), the ball (4) that uses both to rotate is installed between the outer ring surface of first counterdie (3) insertion end and the groove internal face of second counterdie (6), between first counterdie (3) and the structure of second counterdie (6), is marked with lubricating oil or lubricant grease.
3. oscillating mode seamless T pipe connection cold extrusion molding mould according to claim 1, it is characterized in that described eccentric vibration mechanism (14) is comprised of eccentric wheel (7) and drive motors (10), eccentric wheel (7) is arranged in the direction recess (8) of second counterdie (6) bottom, and eccentric wheel (7) is directly or indirectly arranged on the output shaft of drive motors (10).
4. oscillating mode seamless T pipe connection cold extrusion molding mould according to claim 3, is characterized in that described direction recess (8) is kidney-shaped structure, and the external diameter of the width of kidney-shaped structure and eccentric wheel (7) matches.
5. oscillating mode seamless T pipe connection cold extrusion molding mould according to claim 1, is characterized in that described spacer (5) is flange arrangement, and its flange face is fixedly linked by screw and second counterdie.
6. oscillating mode seamless T pipe connection cold extrusion molding mould according to claim 1, is characterized in that the described axial line of shaped hole (13) and the axial line of straight tube to be extruded (2) is vertical or angle is less than 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210179598.6A CN102699092B (en) | 2012-06-04 | 2012-06-04 | Vibration type seamless three-way pipe cold extrusion forming die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210179598.6A CN102699092B (en) | 2012-06-04 | 2012-06-04 | Vibration type seamless three-way pipe cold extrusion forming die |
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| Publication Number | Publication Date |
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| CN102699092A CN102699092A (en) | 2012-10-03 |
| CN102699092B true CN102699092B (en) | 2014-03-26 |
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| CN201210179598.6A Active CN102699092B (en) | 2012-06-04 | 2012-06-04 | Vibration type seamless three-way pipe cold extrusion forming die |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103962408A (en) * | 2014-05-29 | 2014-08-06 | 河北宏润重工股份有限公司 | Extrusion forming mould for branch pipes of main nuclear pipeline |
| CN109423571B (en) * | 2017-08-28 | 2019-11-12 | 中国石油天然气集团公司 | A kind of X80 steel-grade seam-less T-joint and its manufacturing method |
| CN110523948B (en) * | 2019-08-29 | 2024-04-16 | 卓然(靖江)设备制造有限公司 | Axial vibration centrifugal machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028208A (en) * | 1978-08-16 | 1980-03-05 | Lucas Industries Ltd | Apparatus for shaping a workpiece |
| EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
| CN201572808U (en) * | 2009-10-20 | 2010-09-08 | 西安创新精密仪器研究所 | Hydraulic servo vibration extruder |
| CN102380517A (en) * | 2011-10-19 | 2012-03-21 | 浙江工业大学 | Multifunctional vibration extrusion die based on electro-hydraulic servo driving |
| CN102397908A (en) * | 2011-11-29 | 2012-04-04 | 浙江工业大学 | High-frequency flutter cold extruding die |
-
2012
- 2012-06-04 CN CN201210179598.6A patent/CN102699092B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028208A (en) * | 1978-08-16 | 1980-03-05 | Lucas Industries Ltd | Apparatus for shaping a workpiece |
| EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
| CN201572808U (en) * | 2009-10-20 | 2010-09-08 | 西安创新精密仪器研究所 | Hydraulic servo vibration extruder |
| CN102380517A (en) * | 2011-10-19 | 2012-03-21 | 浙江工业大学 | Multifunctional vibration extrusion die based on electro-hydraulic servo driving |
| CN102397908A (en) * | 2011-11-29 | 2012-04-04 | 浙江工业大学 | High-frequency flutter cold extruding die |
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| CN102699092A (en) | 2012-10-03 |
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Denomination of invention: Cold extrusion die for vibrating seamless tee pipe Effective date of registration: 20211215 Granted publication date: 20140326 Pledgee: Jiangsu Baoying Rural Commercial Bank Co.,Ltd. Pledgor: YANGZHOU PIPE FITTING FACTORY Co.,Ltd. Registration number: Y2021980015048 |