CN86103262B - Pipe skew rolling mill with pipe end reducing device - Google Patents
Pipe skew rolling mill with pipe end reducing device Download PDFInfo
- Publication number
- CN86103262B CN86103262B CN86103262A CN86103262A CN86103262B CN 86103262 B CN86103262 B CN 86103262B CN 86103262 A CN86103262 A CN 86103262A CN 86103262 A CN86103262 A CN 86103262A CN 86103262 B CN86103262 B CN 86103262B
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- pipe
- roll
- rolling mill
- rolling
- rolling machine
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- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract 2
- 238000005098 hot rolling Methods 0.000 abstract 2
- 230000000737 periodic effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 238000009785 tube rolling Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The present invention relates to a pipe skew rolling mill, and is characterized by that on the outlet side of rolled piece a pipe end reducing device is mounted. It has the advantages of simple structure, low investment, practicality, easy operation, etc. When the automatic pipe rolling mill is used for an automatic pipe rolling mill set with a secondary perforation process, the gripping condition that a tubular billet subjected to secondary perforation enters the automatic pipe rolling mill can be improved; when the pipe end surface bending device is used on an extension machine of a periodic hot-rolling pipe unit, the times of heading the hollow billet on the periodic hot-rolling pipe unit and the outward bending and the cracks of the pipe end surface can be reduced. Tests show that the operation rate of the pilger mill and the yield of the pipe can be improved by more than 1 film percent respectively, and obvious economic benefit can be obtained.
Description
The present invention relates to a kind of tube slope rolling machine of being furnished with the bottlenecking device.
Pipe after the rolling perforation of common tube slope rolling machine is to carry out by means of the axle top and the roll that are through in the pipe, through secondary punch machine or tubing elongator rolling etc. the external diameter hollow billet is difficult enters the pipe mill pass smoothly and be rolled.For roll is nipped smoothly, in the plug rolling unit, often to limit the deflection of automatic tube rolling mill, influence the ability of automatic tube rolling mill, and in the Pilger mill group, take the lead by feeder, general every hollow billet will be taken the lead through 20-30 time, influence the productivity ratio of pipe mill, produce owing to take the lead outside the pipe end surface roll over, defective such as crackle, reduce the lumber recovery of tubing, when feed quantity is excessive, often cause unit exception, influence the operating rate of pipe mill.
In the tube rolling production process, someone adopts two frames of arranging relatively along the axle direction, in the middle of frame is one group of roll, with the axle is that the center is symmetrically distributed, one on roll is contained on the bearing block of a fixed frame, and the other end then is contained on the bearing block of relative therewith rotary frame, and rotary frame is around the revolution of hollow billet center line, change the light-wall pipe pipe mill of the incident angle of roll axis and axle axis, as US-3465563 patent in 1969.This pipe mill complex structure.
The objective of the invention is to propose a kind of tube slope rolling machine that can dwindle tubing front end external diameter, it especially is beneficial to the transformation to existing skew rolling mill, overcomes the deficiency of aforementioned tube slope rolling machine.
The characteristics of the tube slope rolling machine of being furnished with the bottlenecking device that the present invention proposes are to insert single-action hydraulic cylinder in the corresponding roll-box of rolled piece outlet side housing screw, constitute the bottlenecking device.Under the effect of this device, roll produces additional drift angle α around the swing of the sphere end of rolled piece entrance side housing screw, has changed the position of roll axis, thereby the pass that change roll and axle top are constituted reaches the purpose that can dwindle tubing front end external diameter.When tubing front end undergauge length satisfies technological requirement, with the single-action hydraulic cylinder pressure release of bottlenecking device reset change over to normally rolling.
Because the present invention only inserts single-action hydraulic cylinder in the corresponding roll-box of tube slope rolling machine rolled piece outlet side housing screw, so have simple in structure, small investment, practicality, easy-operating advantage.When the bottlenecking device is used to have the plug rolling unit of secondary punch technology, can improve the bite condition that enters automatic tube rolling mill through the hollow billet behind the secondary punch.When on the elongator that is used for the Pilger mill group, the take the lead number of times of the hollow billet of producing on Pilger mill obviously reduces, reduced simultaneously outside unit exception phenomenon and the pipe end surface roll over, defective such as crackle, can improve the operating rate of Pilger mill and tubing lumber recovery each more than 1%, obtain tangible economic benefit.
Accompanying drawing is a structure principle chart of being furnished with the tube slope rolling machine of bottlenecking device.(1) is roll-box among the figure, (2) be rolled piece, (3) be rolled piece outlet side housing screw, (4) be the single-action hydraulic cylinder of bottlenecking device, (5) are rolled piece entrance side housing screws, and (6) are rolls, (7) be the preceding axis of roll swing, (8) be the axle top, (9) are the axis after the roll swing, (10) bottlenecking device.
The embodiment that present invention will be described in detail with reference to the accompanying.
The present invention goes up boring one circular hole at the corresponding roll-box of tube slope rolling machine rolled piece (2) outlet side housing screw (3) (1), and single-action hydraulic cylinder (4) is inserted in the good circular hole of boring, has constituted bottlenecking device (10).When the rodless cavity topping up of single-action hydraulic cylinder (4), under the effect of piston, roll-box (1) is swung around the sphere end of rolled piece (2) entrance side housing screw (5) together with roll (6), make roll (6) axis change to the position of (9) by (7), produce additional drift angle α, owing to changed the axial location of roll (6), so changed the normal pass that roll (6) and axle top (8) are constituted when rolling, rolled piece (2) pipe end external diameter is carried out plastic working, realize bottlenecking, and the internal diameter of rolled piece (2) is by the size decision of axle top (8).When bottlenecking length satisfies technological requirement, single-action hydraulic cylinder (4) pressure release with bottlenecking device (10), roll (6) resets under the acting in conjunction of roll-force and roll balance gear (scheming not shown) together with roll-box (1), change over to normally rolling, thereby satisfy technological requirement.
Claims (5)
1, a kind of tube slope rolling machine comprises 〈 ﹠﹠ 〉
2, want 1 described tube slope rolling machine according to right, its structure is that the bottlenecking device is contained in and the corresponding 〈 ﹠﹠ of housing screw〉in.
3, want 2 described tube slope rolling machines according to right, it is characterized in that in the corresponding pressure roller case of housing screw, being processed into a hole.
4, tube slope rolling machine according to claim 1 is characterized in that the hydraulic cylinder of bottlenecking device is inserted in the hole of rolled piece outlet side and the corresponding roll-box of housing screw.
5, tube slope rolling machine according to claim 4, when it is characterized in that the rodless cavity topping up when hydraulic cylinder, under the use of piston, roll-box around the swing of the sphere end of rolled piece entrance side housing screw, makes the axis of roll produce additional drift angle α together with roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86103262A CN86103262B (en) | 1986-05-14 | 1986-05-14 | Pipe skew rolling mill with pipe end reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86103262A CN86103262B (en) | 1986-05-14 | 1986-05-14 | Pipe skew rolling mill with pipe end reducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103262A CN86103262A (en) | 1987-01-24 |
| CN86103262B true CN86103262B (en) | 1988-04-06 |
Family
ID=4802012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86103262A Expired CN86103262B (en) | 1986-05-14 | 1986-05-14 | Pipe skew rolling mill with pipe end reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86103262B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689409B (en) * | 2016-02-03 | 2017-12-22 | 西安建筑科技大学 | A kind of method for controlling the Mannesmann piercing mill amount of wagging the tail |
| DE102018003434A1 (en) * | 2018-04-27 | 2019-10-31 | Sms Group Gmbh | Cross rolling mill with hydraulic roller adjustment |
-
1986
- 1986-05-14 CN CN86103262A patent/CN86103262B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86103262A (en) | 1987-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Publication of corrected invention patent application |
Correct: Shao Zuotian|Jiang Yongjing False: Shao Zuotian Number: 6 Page: 13 Volume: 3 Correct: North China University of Technology Chengdu seamless steel tube factory False: Beifang Polytechnic Univ. Number: 6 Page: 13 Volume: 3 |
|
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| CI01 | Publication of corrected invention patent application |
Correct: Jiang Yongjing False: Wang Yongjing Number: 14 Page: 53 Volume: 4 |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CI01 | Publication of corrected invention patent application |
Correction item: Inventor Correct: Jiang Yongjing False: Wang Yongjing Number: 46 Page: 62 Volume: 4 |
|
| ERR | Gazette correction |
Free format text: CORRECT FROM: WANG YONGJING TO: JIANG YONGJING Free format text: JIANG YONGJING Free format text: CORRECT FROM: SHAO ZUOTIAN TO: SHAO ZUOTIAN JIANG YONGJING; FROM: NORTH CHINA POLYTECHNICAL COLLEGETO: CHENGDU SEAMLESS STEEL TUBE FACTORY, NORTH CHINA POLYTECHNICAL COLLEGE |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |