CN111069297A - A kind of rounding mill fork head - Google Patents
A kind of rounding mill fork head Download PDFInfo
- Publication number
- CN111069297A CN111069297A CN202010033747.2A CN202010033747A CN111069297A CN 111069297 A CN111069297 A CN 111069297A CN 202010033747 A CN202010033747 A CN 202010033747A CN 111069297 A CN111069297 A CN 111069297A
- Authority
- CN
- China
- Prior art keywords
- fillet
- rolling mill
- fork head
- fork
- mounting groove
- 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
- 102000004315 Forkhead Transcription Factors Human genes 0.000 title claims abstract description 11
- 108090000852 Forkhead Transcription Factors Proteins 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
- B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
本发明公开了一种变圆角轧机叉头，用以解决现有轧机叉头因强度不足而经常发生开裂事故的问题。通过设计一种具有变圆角结构的轧机叉头，特点在于在叉头滑块安装槽的棱边圆角为半径变化的圆角，此设计大幅度改善了叉头的滑块安装槽圆角应力集中现象，从而提高叉头的结构强度。本发明具有结构简单、制造方便等特点。
The invention discloses a fork head of a variable fillet rolling mill, which is used to solve the problem that cracking accidents often occur in the fork head of the existing rolling mill due to insufficient strength. By designing a rolling mill fork with variable fillet structure, the feature is that the edge fillet of the slider installation groove of the fork head is a fillet with a variable radius. This design greatly improves the fillet of the slider installation groove of the fork head. Stress concentration phenomenon, thereby improving the structural strength of the fork. The invention has the characteristics of simple structure, convenient manufacture and the like.
Description
Technical Field
The invention relates to the field of metallurgical equipment, in particular to a variable fillet rolling mill fork.
Background
The rolling mill jaw is the important part of bearing that connects motor and rolling mill flat head, and at rolling in-process, the rolling mill jaw plays the effect of transmission moment of torsion, and the inside slider mounting groove position stress of jaw is great under the moment of torsion effect, and especially there is stress concentration at slider mounting groove root fillet intersection, leads to the problem of cracking often to appear in rolling mill jaw slider mounting groove edge fillet intersection under the effect of long-term alternating load. Therefore, stress concentration at the intersection of the root fillets of the sliding block mounting groove is relieved through a design means, and the method has very important significance for solving the problem of cracking of the fork head of the rolling mill and prolonging the fatigue service life of the fork head of the rolling mill.
Disclosure of Invention
In order to overcome the problems, the invention provides a variable fillet rolling mill fork, aiming at relieving stress concentration at the intersection of fillets at the root part of a fork slide block mounting groove and solving the problem of frequent cracking at the root part of the existing fork slide block mounting groove.
In order to achieve the purpose, the invention adopts the following technical scheme based on the fillet structure characteristic of the slide block mounting groove: through designing a rolling mill jaw that has the fillet characteristic of changing, the characteristics lie in that slider mounting groove edge fillet is the fillet of radius change, and the fillet variation range is between 10 ~ 60 millimeters.
The invention has the beneficial effects that: through designing a become fillet rolling mill jaw, make slider mounting groove edge fillet be radius change characteristics to alleviate the stress concentration phenomenon of slider mounting groove root fillet intersection, realize increasing substantially the ability that the jaw bore the moment of torsion, prolong the purpose of the fatigue life of rolling mill jaw.
Drawings
FIG. 1 is a three-dimensional schematic view of the structure of the present invention.
FIG. 2 is an enlarged view of the mounting slot for the fork head slider of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 is a three-dimensional schematic diagram of the structure of the invention, and the rolling mill fork is of a symmetrical structure and is specifically characterized by comprising a rolling mill connecting end 1, a middle part 2 and a motor connecting end 3. The rolling mill connecting end 1 is internally provided with a tiger's mouth which consists of an inner arc surface 4, an outer arc surface 5, a sliding block mounting groove 6 and an oil hole 7. The slide block mounting groove 6 is embedded in the middle of the outer arc surface 5, and the oil hole 7 is communicated to the motor connecting end 3.
FIG. 2 is an enlarged view of the mounting groove of the fork head slider of the present invention, wherein the fillet radius of the edge of the mounting groove of the slider is designed to vary from a fillet radius R near the inner circular arc 41Gradually decreases to R along the edge2。
Preferably, the slider mounting groove edge radius R is as shown in FIG. 21Is 40 mm and R2When 15 millimeters, can effectively slow down the stress concentration phenomenon of slider mounting groove root fillet intersection, easily processing production and assembly simultaneously.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033747.2A CN111069297A (en) | 2020-01-11 | 2020-01-11 | A kind of rounding mill fork head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033747.2A CN111069297A (en) | 2020-01-11 | 2020-01-11 | A kind of rounding mill fork head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111069297A true CN111069297A (en) | 2020-04-28 |
Family
ID=70323138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010033747.2A Pending CN111069297A (en) | 2020-01-11 | 2020-01-11 | A kind of rounding mill fork head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111069297A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294013A (en) * | 2002-03-29 | 2003-10-15 | Shin Caterpillar Mitsubishi Ltd | Structure of stepped rod |
| CN1541805A (en) * | 2003-02-26 | 2004-11-03 | 黑根沙伊特-Mfd有限公司及两合公司 | Process of roller burnishing of the transition between bearing pin and flange of crank shafts |
| JP2012197832A (en) * | 2011-03-18 | 2012-10-18 | Jtekt Corp | Sliding tripod constant velocity joint |
| CN203051207U (en) * | 2013-02-06 | 2013-07-10 | 重庆水泵厂有限责任公司 | Centrifugal pump provided with low-stress snap ring groove |
| CN207049217U (en) * | 2017-03-15 | 2018-02-27 | 四川三洲特种钢管有限公司 | A kind of rolling mill universal shaft coupling |
| CN111069296A (en) * | 2020-01-11 | 2020-04-28 | 湖南科技大学 | A rolling mill fork with stress relief groove |
| CN212821784U (en) * | 2020-01-11 | 2021-03-30 | 湖南科技大学 | A semicircular stress relief groove for the fork of a rolling mill |
| CN212821783U (en) * | 2020-01-11 | 2021-03-30 | 湖南科技大学 | A rounding mill fork head |
-
2020
- 2020-01-11 CN CN202010033747.2A patent/CN111069297A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294013A (en) * | 2002-03-29 | 2003-10-15 | Shin Caterpillar Mitsubishi Ltd | Structure of stepped rod |
| CN1541805A (en) * | 2003-02-26 | 2004-11-03 | 黑根沙伊特-Mfd有限公司及两合公司 | Process of roller burnishing of the transition between bearing pin and flange of crank shafts |
| JP2012197832A (en) * | 2011-03-18 | 2012-10-18 | Jtekt Corp | Sliding tripod constant velocity joint |
| CN203051207U (en) * | 2013-02-06 | 2013-07-10 | 重庆水泵厂有限责任公司 | Centrifugal pump provided with low-stress snap ring groove |
| CN207049217U (en) * | 2017-03-15 | 2018-02-27 | 四川三洲特种钢管有限公司 | A kind of rolling mill universal shaft coupling |
| CN111069296A (en) * | 2020-01-11 | 2020-04-28 | 湖南科技大学 | A rolling mill fork with stress relief groove |
| CN212821784U (en) * | 2020-01-11 | 2021-03-30 | 湖南科技大学 | A semicircular stress relief groove for the fork of a rolling mill |
| CN212821783U (en) * | 2020-01-11 | 2021-03-30 | 湖南科技大学 | A rounding mill fork head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200428 |
|
| WD01 | Invention patent application deemed withdrawn after publication |