CN101015838B - Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs - Google Patents
Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs Download PDFInfo
- Publication number
- CN101015838B CN101015838B CN2007100614728A CN200710061472A CN101015838B CN 101015838 B CN101015838 B CN 101015838B CN 2007100614728 A CN2007100614728 A CN 2007100614728A CN 200710061472 A CN200710061472 A CN 200710061472A CN 101015838 B CN101015838 B CN 101015838B
- Authority
- CN
- China
- Prior art keywords
- screw
- thread
- thickness
- uniform
- sickness
- 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.)
- Active
Links
- 206010025482 malaise Diseases 0.000 title claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 230000000994 depressogenic effect Effects 0.000 claims description 9
- 238000009826 distribution Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 241000282461 Canis lupus Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Metal Rolling (AREA)
Abstract
The invention relates to a roller slim adjusting unequal screw press screw couple of large middle-thick roller, characterized in that unequal screw press screw couple and the equal screw press screw couple have constant screw distance and tooth distance, wherein the screw tooth thickness of press nut (2) is larger than the screw tooth thickness of press screw (1), the screw tooth thickness of press nut (2) is equal to the former equal screw tooth thickness and the screw tooth thickness difference delta, the screw tooth thickness of pressed screw (1) is equal to the former equal thickness screw tooth reduced by the screw tooth thickness difference delta, and the screw tooth thickness different delta is 2.5-3.5mm, the valley bottom of the pressure screw (1) is disposed with an arc groove tangent with the profile of two nearby screw tooth while the arc radius R is 8-12mm. The invention can improve 3 years of service life than equal thickness press screw couple.
Description
Technical field
The present invention relates to field of metallurgical machine, particularly relate to a kind of large-scale heavy and medium plate mill roll gap adjusting and depress the screw thread pair device.
Background technology
Existing heavy and medium plate mill of China and about 29 covers of steekle mill of producing cut deal specially, total production capacity is about 2,000 ten thousand tons.Output will have certain growth along with the operation of Baosteel 5000mm milling train and the operation of a collection of transformation and newly-built equipment in 2005.Ji steel 3500mm heavy and medium plate mill, Shoudu Iron and Steel Co 3500mm heavy and medium plate mill etc. are wherein typically arranged.
Large-scale heavy and medium plate mill roll gap is regulated and is depressed the core component that screw thread pair is the milling train electric screw down gear.Its life-span and reliability concern the steady production of whole rolling.Yet in actual use, depress the screw thread pair serious wear, the life-span is short, increases and shuts down the replacing time, has a strong impact on production process, brings enormous economic loss.
Milling train both sides housing screw, nut serious wear problem have appearred in the 2800mm jobbing sheet-rolling mill operation initial stage of certain medium plate mill, have copper scale to discharge from screw box when screw thread pair starts with the adjustment roll gap, depress motor working current and often surpass the design normal value.After the shutdown, the copper alloy nut serious wear is found in dismounting housing screw, nut inspection.It is more serious to have occurred the wearing and tearing of annular local chase, root on the zigzag tooth form, and
The housing screw tooth form local surfaces bonding copper scale of steel and burn vestige.Depress the secondary major injury of convex spherical of thrust bearing, the rolling element limit end office (EO) portion's pressure break or the decortication of bearing.According to field investigation, the 3500mm heavy and medium plate mill of certain medium plate mill is depressed screw thread pair nut year wear extent and is surpassed more than the 1mm.
Summary of the invention
Depress screw thread pair copper in order to solve existing heavy and medium plate mill
Problems such as the nut life-span is low, the invention provides a kind of large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs, reasonable in design, the reliable operation of this non-uniform sickness screw-tooth pressure down screw-pairs is depressed screw thread pair with the uniform thickness thread and is compared its service life and can improve more than 3 years.
The technical solution adopted for the present invention to solve the technical problems is: large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs is compared constant with the pitch that the uniform thickness thread is depressed screw thread pair with backlash, the thickness of its screw box thread is greater than the thickness of housing screw thread, the thickness of its screw box thread equals former uniform thickness thread thickness and adds the thick poor δ of thread, the thickness of non-uniform sickness screw-tooth pressure down screw-pairs housing screw thread equals former uniform thickness thread thickness and subtracts the thick poor δ of thread, the thick poor δ of thread=2.5～3.5mm.The place opens arc groove in housing screw thread the lowest point, and the outline line of arc groove and two adjacent threads is tangent, arc radius R=8～12mm.
Description of drawings
Fig. 1 is that the screw thread pair structural representation is depressed in large-scale heavy and medium plate mill roll gap adjusting;
Fig. 2 is that large-scale heavy and medium plate mill roll gap adjusting uniform thickness thread is depressed the screw thread pair partial enlarged drawing;
Fig. 3 is that the screw thread pair material stiffness is to thread interface pressure distribution effect;
Fig. 4 is large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs partial enlarged drawing;
Fig. 5 is the 2nd a layer of thread interface pressure distribution map;
Fig. 6 is the 8th a layer of thread interface pressure distribution map;
Fig. 7 is the 21st a layer of thread interface pressure distribution map.
In Fig. 1,1. housing screw, 2. screw box.
The specific embodiment
Embodiment
Fig. 1 is that a tame large-scale heavy and medium plate mill is depressed the screw thread pair structural representation, and part 1 is a housing screw, and part 2 is a nut, and thread adopts wolf's fang shape (see figure 2).The housing screw material adopts steel, and the nut material adopts copper.Both elastic modelling quantity differ twice.Under the roll-force effect, housing screw 1 thread that rigidity is high takes place to be close to rigid displacement, and nut 2 threads that rigidity is low are similar to cantilever beam generation elastic bending deflection.The distortion of nut thread 2 contact zones is extremely inhomogeneous, and elastic flattening distortion in thread root place is big, and thread top but flexural deformation is big.Thus, nut 2 threads contacts pressure peak trends towards thread root place, and thread top but pressure is minimum even disengage (seeing Fig. 3 copper nut screw thread pair pressure distribution curve).
Housing screw 1 and nut 2 materials be respectively steel and copper or
The thread surface pressure distribution (see figure 3) that steel and steel coupling occasion obtain, the cross line is steel and copper product, corresponding steel of line of dots and steel material.Two kinds of simulations are except the nut material difference, and other condition is all identical.Obviously, when housing screw and nut elastic modelling quantity were identical, the contact pressure distribution is symmetry substantially, in the middle of peak value occupy; When the material elastic modelling quantity of housing screw and nut material differed big more, the contact pressure distribution was slope shape, the nut root of the tooth place of its peak value deflection soft material.
The pitch P of large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs=40mm (see figure 4), for satisfying the sliding function condition, the manufactured materials of housing screw and nut is respectively steel and copper material.Thread adopts wolf's fang shape, and pitch depresses with backlash and uniform thickness thread that screw thread pair is the same to remain unchanged, housing screw thread thickness difference δ=3mm.Non-uniform sickness screw-tooth pressure down screw-pairs nut 2 thread thickness equal former uniform thickness thread thickness and add the thick poor δ of thread, and the thickness of non-uniform sickness screw-tooth pressure down screw-pairs housing screw 1 thread equals former uniform thickness thread thickness and subtracts the thick poor δ of thread.The place opens arc groove in non-uniform sickness screw-tooth pressure down screw-pairs housing screw 1 thread the lowest point, and the outline line of arc groove and two adjacent threads is tangent, arc radius R=10mm.Former uniform thickness thread thickness is 10mm, non-uniform sickness screw-tooth pressure down screw-pairs housing screw 1 thread reduced thickness: b1=10mm-3mm=7mm, and non-uniform sickness screw-tooth pressure down screw-pairs nut 2 thread thickness increase: b2=10mm+3mm=13mm.
The place opens and the tangent arc groove of two adjacent thread outline lines in housing screw 1 thread paddy, to guarantee with rigidity conditions such as nut thread bendings.Reduced pressure distribution map with 22 layers of thread nut non-uniform sickness screw-tooth pressure down screw-pairs the 2nd layer, the 8th layer and the 21st layer thread is from bottom to top seen Fig. 5, Fig. 6 and Fig. 7.
The working life of the large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs of the thick poor 3mm of pitch 40mm thread, uniform thickness was depressed the working life raising of screw thread pair more than 3 years relatively.
Claims (1)
1. one kind large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs, comprise (2) two parts of housing screw (1) and screw box, it is characterized in that: large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs is compared constant with the pitch that the uniform thickness thread is depressed screw thread pair with backlash, the thickness of its screw box (2) thread is greater than the thickness of housing screw (1) thread, the thickness of screw box (2) thread equals former uniform thickness thread thickness and adds the thick poor δ of thread, the thickness of housing screw (1) thread equals former uniform thickness thread thickness and subtracts the thick poor δ of thread, the thick poor δ of thread=2.5～3.5mm; The material of described housing screw (1) and screw box (2) is respectively steel and copper material; The place opens arc groove in housing screw (1) thread the lowest point, and the outline line of arc groove and two adjacent threads is tangent, arc radius R=8～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100614728A CN101015838B (en) | 2007-01-28 | 2007-01-28 | Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100614728A CN101015838B (en) | 2007-01-28 | 2007-01-28 | Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101015838A CN101015838A (en) | 2007-08-15 |
| CN101015838B true CN101015838B (en) | 2011-12-07 |
Family
ID=38725153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100614728A Active CN101015838B (en) | 2007-01-28 | 2007-01-28 | Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101015838B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231397B (en) * | 2020-02-10 | 2021-12-28 | 北京华电光大环境股份有限公司 | Continuous pleating equipment and SCR plate type catalyst |
| CN114234884B (en) * | 2021-11-22 | 2024-08-27 | 河南航天液压气动技术有限公司 | Trapezoidal screw pair gap detection equipment and detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1075701A (en) * | 1964-03-06 | 1967-07-12 | Hille Engineering Company Ltd | An improvement in or relating to rolling mills |
| US3534577A (en) * | 1966-11-08 | 1970-10-20 | Hans R Fernbach | Rolling mills for rolling metal |
| CN2362604Y (en) * | 1998-12-03 | 2000-02-09 | 洪伟 | Novel frameless double-roller aluminium band casting mill |
| CN1454724A (en) * | 2003-05-19 | 2003-11-12 | 北京科技大学 | Frame-free vertical rolling mill locating and locking mechanism |
| CN1709599A (en) * | 2005-06-08 | 2005-12-21 | 太原科技大学 | Rolling mill press-down screw mechanism |
-
2007
- 2007-01-28 CN CN2007100614728A patent/CN101015838B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1075701A (en) * | 1964-03-06 | 1967-07-12 | Hille Engineering Company Ltd | An improvement in or relating to rolling mills |
| US3534577A (en) * | 1966-11-08 | 1970-10-20 | Hans R Fernbach | Rolling mills for rolling metal |
| CN2362604Y (en) * | 1998-12-03 | 2000-02-09 | 洪伟 | Novel frameless double-roller aluminium band casting mill |
| CN1454724A (en) * | 2003-05-19 | 2003-11-12 | 北京科技大学 | Frame-free vertical rolling mill locating and locking mechanism |
| CN1709599A (en) * | 2005-06-08 | 2005-12-21 | 太原科技大学 | Rolling mill press-down screw mechanism |
Non-Patent Citations (8)
| Title |
|---|
| .提高轧钢机压下丝杠螺纹副寿命的设计.浙江大学学报(工学版) 1995.3.1995,(1995.3),367-371. |
| 全永昕 |
| 沈萌红 |
| 沈萌红;全永昕;詹建潮;韦云隆;.提高轧钢机压下丝杠螺纹副寿命的设计.浙江大学学报(工学版) 1995.3.1995,(1995.3),367-371. * |
| 胡孔白.浅谈2300中板二辊轧机"压下螺丝回松"现象.重型机械 2004.1.2004,(2004.1),34-36、46. |
| 胡孔白.浅谈2300中板二辊轧机"压下螺丝回松"现象.重型机械 2004.1.2004,(2004.1),34-36、46. * |
| 詹建潮 |
| 韦云隆 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101015838A (en) | 2007-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101015838B (en) | Large-scale heavy and medium plate mill roll-gap-regulation non-uniform sickness screw-tooth pressure down screw-pairs | |
| CN202498152U (en) | Simple fine blanking die | |
| CN103042094B (en) | The precision punching method of automobile disk-type braking brake block steel back and fine blanking die thereof | |
| JP4543980B2 (en) | Manufacturing method of extra-thick steel plate with excellent internal properties | |
| CN101367092A (en) | Working roll technique for controlling edge drop of cold-rolled steel | |
| CN101722186B (en) | Self-potential roller-type cross wedge rolling mill | |
| CN202779359U (en) | Precise stamping die with gear ring pressing plate | |
| CN110732560A (en) | novel hot continuous rolling strip steel supporting roll and manufacturing method thereof | |
| CN102151701A (en) | Hydraulic depressing device of wedge of rolling mill | |
| US3733878A (en) | Roll end relief for rolling mills | |
| CN201366433Y (en) | Axial locating device of rolling mill | |
| CN2818000Y (en) | Six-roller rolling mill with roller movable axially | |
| CN202438619U (en) | Concave die capable of preventing products from being broken at curve positions in bending | |
| CN101259485A (en) | 20 high mill intermediate roller cone | |
| CN2776543Y (en) | Roll body structure of shaft shoulder type high pressure roll grinder | |
| CN108326962A (en) | Die-cutting apparatus, rotor, circular pressing circular mold cutting device, production line and die-cutting machine | |
| CN201316741Y (en) | Hydraulic directly-driven back-lining bearing roller convexity fine-adjusting structure of cold rolling machine | |
| CN201127955Y (en) | Complete hydraulic pressing type six-roller cold calender | |
| CN100337763C (en) | Rolling mill press-down screw mechanism | |
| CN212821775U (en) | Screw-down screw rod of rolling mill | |
| CN200995227Y (en) | High-rigidity and small-flexiblity wide-band roller | |
| CN220463236U (en) | Guide structure of bearing double-end-face grinding machine | |
| CN101402102B (en) | Hydraulic direct drive backing cloth bearing roller convexity fine tuning structure of cold rolling mill | |
| CN215032849U (en) | Die carrier for QDC hardware die | |
| CN201064786Y (en) | Novel separating type balancing device used on roller of cold rolling mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN TIANZHONG ZHONGZHI TECHNOLOGY ENGINEERING Free format text: FORMER OWNER: YANSHAN UNIVERSITY Effective date: 20150701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Jingliang Inventor after: Sun Liguo Inventor before: Shen Guangxian Inventor before: Li Ming Inventor before: Chen Xiumin Inventor before: Peng Chunyan Inventor before: Zuo Dawei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHEN GUANGXIAN LI MING CHEN XIUMIN PENG CHUNYAN ZUO DAWEI TO: MA JINGLIANG SUN LIGUO |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150701 Address after: 300409 Tianjin City, Beichen science and Technology Park South Road No. 16 King Patentee after: Tianjin Tianzhong Zhongzhi Technological Engineering Co., Ltd. Address before: 066004 Hebei street, Qinhuangdao, Hebei Province, No. 438 Patentee before: Yanshan University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210222 Address after: 300409 No. 65, Gaoxin Avenue, outer ring Development Zone, science and Technology Park, Beichen District, Tianjin Patentee after: TIANJIN ZHONGZHONG SCIENCE TECHNOLOGY & ENGINEERING Co.,Ltd. Address before: No.16, Jingxiang Road, South District, Beichen Science Park, Tianjin, 300409 Patentee before: TIANJIN TIANZHONG ZHONGZHI TECHNOLOGICAL ENGINEERING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300409 No. 65, Gaoxin Avenue, outer ring Development Zone, science and Technology Park, Beichen District, Tianjin Patentee after: Zhongzhong Technology (Tianjin) Co.,Ltd. Address before: 300409 No. 65, Gaoxin Avenue, outer ring Development Zone, science and Technology Park, Beichen District, Tianjin Patentee before: TIANJIN ZHONGZHONG SCIENCE TECHNOLOGY & ENGINEERING Co.,Ltd. |