CN201320553Y - Roller for two-roller periodical cold rolling mill - Google Patents
Roller for two-roller periodical cold rolling mill Download PDFInfo
- Publication number
- CN201320553Y CN201320553Y CNU2008201572332U CN200820157233U CN201320553Y CN 201320553 Y CN201320553 Y CN 201320553Y CN U2008201572332 U CNU2008201572332 U CN U2008201572332U CN 200820157233 U CN200820157233 U CN 200820157233U CN 201320553 Y CN201320553 Y CN 201320553Y
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- roll
- roll axle
- roller
- pass
- locating piece
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Abstract
The utility model discloses a roller for a two-roller periodical cold rolling mill, which comprises an upper roller shaft and a lower roller shaft. An upper positioning block is fixedly mounted on the upper roller shaft; an annular hole-shaped upper pass is matched with the positioning block through a positioning groove formed on the outer side of the upper pass and is in interference fit with the upper roller shaft; a lower positioning block is fixedly mounted on the lower roller shaft; an annular hole-shaped lower pass is matched with the positioning block through another positioning groove formed on the outer side of the lower pass and is in interference fit with the lower roller shaft; and the upper pass is matched with the lower pass. The utility model has the advantages of reasonable design, compact structure, accurate positioning, convenient use and maintenance and safe and reliable performance; and the roller shafts after being improved are easy to process, thereby reducing the processing cost. Meanwhile, the roller can effectively improve the operation and maintenance performance of devices, remarkably reduce the overhaul cost, reduce the failure rate, and prolong the service life of the roller and the passes, so that the roller has good popularization and application values.
Description
Technical field
The utility model relates to a kind of roll, relates in particular to a kind of roll that is used for two roller cold-rolling pilger mills, belongs to the cold-rolling equipment technical field of producing seamless steel pipe.
Background technology
Seamless steel pipe is common metallurgical metallic article, and its production procedure is: pipe production (steel-making, steel rolling), steel tube blank (metal round steel), pipe are prepared (length cutting, surperficial peeling, spotting), circular steel are machined to be qualified pipe; Hollow forging is produced (hot-rolling perforation machine is processed into the hot rolling hollow forging to high temperature pipe perforation cogging with the metal pipe); Specification requirement according to production tube, adopt (the cold rolling or cold-drawn of corresponding cold machining process, advantages such as wherein cold rolling production is big because of deflection, be easy to control, precision height, speed is fast, output is big, become the cold working mode of production that extensively adopts at present) carry out deformation process, hollow forging production is become the finished product seamless steel pipe of requirement up to specification.
The cold pilger mill that is used for the cold rolling production of seamless steel pipe is divided into two kinds of double-roller type and multi rolls, two roller cold-rolling pilger mills wherein by rolling mechanism, transmission mechanism, send slew gear etc. to and partly form.Rolling mechanism is made up of parts such as roll device, warp tool (pass, top), adjustment wedge (wedge), support, work housing, skate apparatus, driving rack, level gauges; Roll device is made up of topping roll, bottom roll, topping roll wherein is made up of parts such as topping roll axle, bearing and bearing block, travelling gear, packing ring, end caps, bottom roll is made up of parts such as bottom roll axle, bearing and bearing block, driving gear set, packing ring, end caps, topping roll and bottom roll are assembled into group (cover) part in advance and use, and pass is directly installed on topping roll, the bottom roll.
The design feature of the rolling mechanism of two roller cold-rolling pilger mills is: support is installed on the concrete foundation, work housing, level gauge, driving rack are installed in the support respectively, the roll device that has installed pass is installed in the work housing, adjusts wedge (wedge) and is installed on topping roll and the frame between the plane.During roll seamless steel tube, the main motor outputting power, drive work housing is done horizontal direction in support oscillation cycle motion by main drive gear by crank connecting rod apparatus, roller gear is meshed with driving rack in the support, drive roll and do the swing circle motion, by the pass that is installed on the roll pipe is carried out metal cold deformation processing, become the production tube that meets specification requirement, when rolling against regulation requirement of pipe, can be by changing pass, adjusting the wedge position it is met the requirements.
As depicted in figs. 1 and 2, present two traditional roller cold-rolling pilger mill roll devices, its pass adopts " half pass " structure, characteristics are: going up (descending) roll is a step cylinder, there is a breach of settling half pass at the middle part of going up (descending) roll mandrel 3a (9a), the warp tool that adopts is the combination of going up (descend) half pass 4a (10a) and last (descending) tapered wedges 5a (11a): will with identical 1 half pass of place roll notch size this breach of packing into, and be fixed in the breach with a tapered wedges.Simultaneously, go up on (descend) the pass set bolt 13a (15a), two by one that tapered wedges set bolt 14a (16a) will go up (descending) half pass 4a (10a) respectively and corresponding tapered wedges is fixed on roll.Roll is after using after a while, owing to be squeezed, impact and abrasive action, at first tapered wedges and pass matching loose, the gap increases, this moment, reciprocal play took place in pass on roll mandrel, wedge stress increases, cause roll shaft baseplane (being the baseplane of roll middle part breach) wearing and tearing to be sunk, the broadening of wedge groove, cause that the pass cylindrical is lower than roller surface, the pipe external diameter can't be adjusted, and correlation technique requires and can not effectively be guaranteed, cause roll mandrel to lose efficacy, discard the service life of having reduced roll device.Because the effect of wedge stress, cause the half pass load that withstands shocks, cause pass explosion, breakage, will change parts such as half pass, tapered wedges in order to guarantee the rolling quality requirement, so this type of accessory consumption is big.When warp tool is changed operation, need carry out in the cold-rolling equipment support, the operating condition adverse circumstances are poor, and there is potential safety hazard in the labour intensity height.
In recent years, annular distance type deformation technology reaches its maturity, and the pass of two roller cold-rolling pilger mills progressively adopts " annular distance type " structure, and its design feature is: roll is a step cylinder, pass is " an annular distance type ", and the annular distance type is the mesopore cylinder that a cylindrical is worn semi-circular recesses; The annular distance type adopts interference fit to be directly installed on the roll mandrel, the annular distance type gives closed containing with roll mandrel, with the interference fit of roll mandrel cylindrical and annular distance type endoporus as the location, traditional tapered wedges, the fastening locate mode of screw have been discarded, accurate positioning, firm, eliminate wedge stress, improved the service life of roll device.The annular distance type is installed locate mode, has determined the dismounting of the annular distance type operation of need disembarking, and has improved operating environment, so its roll device adopts unilateral gear transmission, compact conformation is convenient to dismounting, replacing annular distance type.
Because half pass is different fully with the mounting means of annular distance type, a collar pass cold-rolling equipment expense costliness newly is installed, to carry out the major tuneup expense high to having two traditional roller cold-rolling pilger mills now.Therefore on the basis of existing half concave roll device, improve by annular distance type production instructions for use, can on the basis that eliminate safe hidden trouble, reduce improvement cost, guarantee the possibility of equipment improvement work improving roll device service life at roll mandrel.
Summary of the invention
The purpose of this utility model provides a kind of roll that is used for two roller cold-rolling pilger mills, to substitute the cold roller and deformed production of seamless steel pipe that existing half concave roll device is used for traditional double-roller cold pilger mill, its be existing technological improvement of " half concave roll device ", solved effectively the easy explosion of warp tool pass that two roller cold-rolling pilger mill roll devices cause owing to wedge stress, broken invalid, roll service life low, change pass operation labor intensity height, have problem such as potential safety hazard.
The purpose of this utility model is achieved in that a kind of roll that is used for two roller cold-rolling pilger mills, comprise topping roll axle and bottom roll axle, be fixed with locating piece on the described topping roll axle, one epithyrid that is the annular distance type matches with this locating piece by a locating slot of being located at its outside, and described epithyrid and this topping roll axle interference fit are installed; Be fixed with locating piece on the described bottom roll axle, a lower pass that is the annular distance type matches with this locating piece by a locating slot of being located at its outside, and described lower pass and this bottom roll axle interference fit are installed; Described epithyrid and lower pass are suitable.
Preferably, the described rectangular shape of locating piece of going up offers an installing hole on it, and by a screw that is complementary with this installing hole it is installed on this topping roll axle.
Preferably, the described down rectangular shape of locating piece offers an installing hole on it, and by a screw that is complementary with this installing hole it is installed on this bottom roll axle.
Preferably, the described material that goes up locating piece and following locating piece is steel, heat treatment quenching and tempering HRC=33-38 No. 45.
Preferably, described topping roll axle is step-like, and outwards is equipped with this topping roll axle interference fit in turn in the bilateral symmetry of described epithyrid: two axial positioning sleeves, two top chocks, two lining rings and two gears.
Preferably, described epithyrid, two axial positioning sleeves, two top chocks, two lining rings and two gears are with the temperature differential method directional heat and are set on the described topping roll axle.
Preferably, described bottom roll axle is step-like, and outwards is equipped with this bottom roll axle interference fit in turn in the bilateral symmetry of described lower pass: two axial positioning sleeves, two steps, two lining rings and two gear trains.
Preferably, described lower pass, two axial positioning sleeves, two steps, two lining rings and two gear trains are with the temperature differential method directional heat and are set on the described bottom roll axle.
Preferably, the material of described topping roll axle and bottom roll axle is 40CrMo, heat treatment quenching and tempering hardness HB=255-302.
Preferably, offer a screwed hole on the both ends of the surface of described topping roll axle respectively at least, offer a screwed hole on the both ends of the surface of described bottom roll axle respectively at least.
The utility model is owing to adopted above technical scheme, make it compared with prior art, have the following advantages and good effect: the roll that originally is used for two roller cold-rolling pilger mills, it is reasonable in design, compact conformation, accurate positioning, and working service is convenient, performance is safe and reliable, be easy to processing through improved roll mandrel, reduced processing charges.Simultaneously, also for having created condition the service life that reduces labor intensity, eliminates site safety hidden danger, raising roll and pass.In addition, its effectively raising equipment operation, maintainability significantly reduce the recondition expense spending, reduce fault rate, therefore possess good application value.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of half pass topping roll in the prior art.
Fig. 2 is the structural representation of half pass bottom roll in the prior art.
Fig. 3 is the structural representation of topping roll in the utility model preferred embodiment.
Fig. 4 is the structural representation of bottom roll in the utility model preferred embodiment.
Fig. 5 is the front view that is loaded on the epithyrid of topping roll axle in the utility model preferred embodiment.
Fig. 6 is the left view of epithyrid among Fig. 5.
Fig. 7 is the front view that is loaded on the last locating piece of topping roll axle in the utility model preferred embodiment.
Fig. 8 is a left view of going up locating piece among Fig. 7.
Fig. 9 goes up the assembling schematic diagram of locating piece at the topping roll axle in the utility model preferred embodiment.
Figure 10 be among Fig. 9 A-A to cutaway view.
The number in the figure explanation:
3a-topping roll axle 4a-epithyrid 5a-goes up tapered wedges
Tapered wedges under the 9a-bottom roll axle 10a-lower pass 11a-
13a-epithyrid set bolt 14a-goes up the tapered wedges set bolt
Tapered wedges set bolt under the 15a-lower pass set bolt 16a-
1-gear 2-top chock 3-topping roll axle 31-screwed hole
4-epithyrid 41-locating slot 5-axial location cover 6-lining ring
7-gear train 8-step 9-bottom roll axle 10-lower pass
11-axial location cover 12-lining ring 13-goes up locating piece 131-installing hole
Locating piece 16-screw under the 14-screw 15-
The specific embodiment
Fig. 3, Fig. 4 show the utility model respectively and are used for the topping roll of a preferred embodiment of roll of two roller cold-rolling pilger mills and the structure of bottom roll, they are installed in certain iron company steel tube factory rolling mechanism of existing XNT-55 two roller cold-rolling pilger mills at last, are used for the cold roller and deformed production of seamless steel pipe.
As shown in Figure 3, topping roll axle 3 is that a length is the multiple step-like cylinder of 1145mm, step surface is followed successively by: φ 180*92, φ 195*63, φ 205*87.5, φ 204*20, φ 205*92.5, φ 225*5, φ 230*85.5, φ 280*65, φ 212*170, φ 205*225, φ 204*20, φ 205*87.5, φ 195*63, φ 180*92mm, the two ends of topping roll axle 3 are processed with φ 100*100, φ 90*100mm stepped hole respectively.As shown in figure 10, be processed with the M16 screwed hole 31 that three place's degree of depth are 47mm on the both ends of the surface of topping roll axle 3 respectively, the semi-circular opening keyway in top that adds section chief 85mm, wide 45mm, dark 13mm on the φ 180*92 step outer cylinder surface at two ends respectively, the φ 280*65 step outer cylinder surface at middle part is processed the rectangular channel of wide 40mm, this groove center line and roll keyway center line are 102 ° of angles, and processing one degree of depth is the M12 screwed hole of 25mm in the groove.The material of topping roll axle 3 is 40CrMo, heat treatment quenching and tempering hardness HB=255-302.At the middle part of topping roll axle 3 locating piece 13 on is housed, is used for assembling guiding and location between topping roll axle 3 and the epithyrid 13, its material is No. 45 steel, heat treatment quenching and tempering HRC=33-38.Shown in Fig. 7,8, profile of locating piece 13 is rectangular on this, and is processed with an installing hole 131 at its front position, is fixed on the topping roll axle 3 by a soket head cap screw 14 again.Shown in Fig. 5,6, the profile of epithyrid 4 is the annular distance type, and offers the locating slot 41 that a size with last locating piece 13 is complementary in the one outside.
As shown in Figure 4, bottom roll axle 9 is that a length is the multiple step-like cylinder of 1350mm, step surface is followed successively by: φ 180*194.5, φ 195*63, φ 205*87.5, φ 204*20, φ 205*92.5, φ 225*5, φ 230*85.5, φ 280*65, φ 212*170, φ 205*225, φ 204*20, φ 205*87.5, φ 195*63, φ 180*194.5mm, the two ends of bottom roll axle 9 are processed with φ 100*100 respectively, φ 90*200mm stepped hole, both ends of the surface are processed the M16 screwed hole that three place's degree of depth are 47mm respectively, the φ 180*92 step outer cylinder surface at two ends adds section chief 185mm respectively, wide 45mm, the semi-circular opening keyway in top of dark 13mm, the φ 280*65 step outer cylinder surface at middle part is processed the rectangular channel of wide 40mm, this groove center line and roll keyway center line are 102 ° of angles, and processing one degree of depth is the M12 screwed hole of 25mm in the groove.The material of bottom roll axle 9 is 40CrMo, heat treatment quenching and tempering hardness HB=255-302.See also Fig. 4, it is identical with last locating piece 13 that the hardness of the profile of following locating piece 15, material and heat treatment quenching and tempering requires all, and be packed on the bottom roll axle 9 by screw 16, so repeat no more.Similarly, lower pass 10 also is complementary with the structure of epithyrid 4, and its profile also is the annular distance type, and offers a locating slot that matches with the size of following locating piece 15 (scheming not shown) in the one outside.
For being expressly understood that more the utility model is used for the roll of two roller cold-rolling pilger mills, below the assembling and the course of work of upper and lower roll are done an explanation:
Shown in Fig. 3,9, at first will go up locating piece 13 is fixed in the rectangular channel of topping roll axle 3 by soket head cap screw 14, then the locating slot 41 of epithyrid 4 is aimed at this locating piece 13, and adopt temperature differential method with epithyrid 4 assembled orientation to topping roll axle 3, outwards in turn 5, two top chocks of two axial location covers 2, two lining rings 6 and two gears 1 are assembled on each step of aforesaid topping roll axle 3 in the bilateral symmetry of epithyrid 4 by temperature differential method more subsequently, so far finish the assembling of topping roll.Bottom roll axle 9 is similar with the assembling process of topping roll axle 3, as shown in Figure 4, finally also outwards installs in turn in the bilateral symmetry of lower pass 10 by temperature differential method: 11, two steps of two axial location covers 8, two lining rings 12 and two gear trains 7.
Subsequently, in the work housing with the supporting rolling mechanism of packing into of above-mentioned upper and lower roll, and adopt upper and lower pressing plate location, both sides,, so just finished machine installation on the field apparatus of roll device by the tapered wedges adjustment.In use, drive rolling mechanism by the main drive gear connecting rod and do cyclic movement in support, upper and lower roll rotates in frame under the drive of gear, and pipe is carried out the rolling processing of cold deformation.Because what the upper and lower roll mandrel of roll device and the annular distance type of warp tool adopted is the closed containing assembling of interference fit, accurate positioning, firm has been eliminated wedge stress, thereby has been improved the service life of roll mandrel and warp tool.Simultaneously, because of the both ends of the surface at topping roll axle 3 and bottom roll axle 9 all are processed with screwed hole, help when the roll disassembling operation, installing the top like this and tear instrument open, convenient operation fast.
Roll mandrel after the improvement is easy to processing, reduced processing charges, can effectively solve the easy explosion of warp tool that existing two roller cold-rolling pilger mill roll devices cause because of wedge stress, broken invalid, roll service life low, change problem such as pass operation labor intensity height, this has created condition service life for reducing labor intensity, eliminate site safety hidden danger, raising roll and pass.Therefore aforementioned steel tube factory can reduce recondition expense more than 150,000 yuan every year, and as seen it provides the equipment operation maintenance performance, reduces the fault generation, achieves noticeable achievement really.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (10)
1. a roll that is used for two roller cold-rolling pilger mills comprises topping roll axle (3) and bottom roll axle (9), it is characterized in that:
Be fixed with locating piece on (13) on the described topping roll axle (3), an epithyrid (4) that is the annular distance type matches with this locating piece (13) by a locating slot (41) of being located at its outside, and described epithyrid (4) is installed with this topping roll axle (3) interference fit;
Be fixed with locating piece (15) on the described bottom roll axle (9), a lower pass (10) that is the annular distance type matches with this locating piece (15) by a locating slot of being located at its outside, and described lower pass (10) is installed with this bottom roll axle (9) interference fit;
Described epithyrid (4) is suitable with lower pass (10).
2. the roll that is used for two roller cold-rolling pilger mills as claimed in claim 1, it is characterized in that: the described rectangular shape of locating piece (13) of going up, offer an installing hole (131) on it, and it is installed on this topping roll axle (3) by a screw (14) that is complementary with this installing hole (131).
3. the roll that is used for two roller cold-rolling pilger mills as claimed in claim 1, it is characterized in that: the described rectangular shape of locating piece (15) down, offer an installing hole on it, and it is installed on this bottom roll axle (9) by a screw (16) that is complementary with this installing hole.
4. as each described roll that is used for two roller cold-rolling pilger mills among the claim 1-3, it is characterized in that: the described material that goes up locating piece (13) and following locating piece (15) is steel, heat treatment quenching and tempering HRC=33-38 No. 45.
5. as each described roll that is used for two roller cold-rolling pilger mills among the claim 1-3, it is characterized in that: described topping roll axle (3) is step-like, and outwards is equipped with this topping roll axle (3) interference fit in turn in the bilateral symmetry of described epithyrid (4): two axial positioning sleeves (5), two top chocks (2), two lining rings (6) and two gears (1).
6. the roll that is used for two roller cold-rolling pilger mills as claimed in claim 5 is characterized in that: described epithyrid (4), two axial positioning sleeves (5), two top chocks (2), two lining rings (6) and two gears (1) are with the temperature differential method orientation and are installed on the described topping roll axle (3).
7. as each described roll that is used for two roller cold-rolling pilger mills among the claim 1-3, it is characterized in that: described bottom roll axle (9) is step-like, and outwards is equipped with this bottom roll axle (9) interference fit in turn in the bilateral symmetry of described lower pass (10): two axial positioning sleeves (11), two steps (8), two lining rings (12) and two gear trains (7).
8. the roll that is used for two roller cold-rolling pilger mills as claimed in claim 7 is characterized in that: described lower pass (10), two axial positioning sleeves (11), two steps (8), two lining rings (12) and two gear trains (7) are with the temperature differential method orientation and are installed on the described bottom roll axle (9).
9. as each described roll that is used for two roller cold-rolling pilger mills among the claim 1-3, it is characterized in that: the material of described topping roll axle (3) and bottom roll axle (9) is 40CrMo, heat treatment quenching and tempering hardness HB=255-302.
10. as each described roll that is used for two roller cold-rolling pilger mills among the claim 1-3, it is characterized in that: offer a screwed hole (31) on the both ends of the surface of described topping roll axle (3) respectively at least, offer a screwed hole on the both ends of the surface of described bottom roll axle (9) respectively at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201572332U CN201320553Y (en) | 2008-12-17 | 2008-12-17 | Roller for two-roller periodical cold rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201572332U CN201320553Y (en) | 2008-12-17 | 2008-12-17 | Roller for two-roller periodical cold rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320553Y true CN201320553Y (en) | 2009-10-07 |
Family
ID=41157942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201572332U Expired - Lifetime CN201320553Y (en) | 2008-12-17 | 2008-12-17 | Roller for two-roller periodical cold rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201320553Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073545A (en) * | 2014-08-29 | 2017-08-18 | 维克托里克公司 | Roller with compound angle flange |
| CN113770182A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Online roll gap detection method for seamless steel tube cold rolling mill roll device |
-
2008
- 2008-12-17 CN CNU2008201572332U patent/CN201320553Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073545A (en) * | 2014-08-29 | 2017-08-18 | 维克托里克公司 | Roller with compound angle flange |
| US10369609B2 (en) | 2014-08-29 | 2019-08-06 | Victaulic Company | Roller with compound angle flange |
| CN107073545B (en) * | 2014-08-29 | 2020-06-19 | 维克托里克公司 | Roller with compound corner flange |
| CN113770182A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Online roll gap detection method for seamless steel tube cold rolling mill roll device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL SPECIAL STEEL CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20140120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200940 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140120 Address after: 200940 Baoshan District aquatic Road, Shanghai, No. 1269 Patentee after: BAOSTEEL SPECIALSTEEL CO., LTD. Address before: 201900 Fujin Road, Shanghai, orchard, Baoshan District Patentee before: Baoshan Iron & Steel Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |