EP3756785A1 - Skew rolling mill with dual-rotatable-shafts - Google Patents

Skew rolling mill with dual-rotatable-shafts Download PDF

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Publication number
EP3756785A1
EP3756785A1 EP20180751.8A EP20180751A EP3756785A1 EP 3756785 A1 EP3756785 A1 EP 3756785A1 EP 20180751 A EP20180751 A EP 20180751A EP 3756785 A1 EP3756785 A1 EP 3756785A1
Authority
EP
European Patent Office
Prior art keywords
bed
rotatable shaft
rotatable
roller
rolling mill
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
Application number
EP20180751.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Baoyu Wang
Longfei LIN
Jinping Liu
Shengqiang LIU
Huibo ZHANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Publication of EP3756785A1 publication Critical patent/EP3756785A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/14—Making articles shaped as bodies of revolution balls, rollers, cone rollers, or like bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/008—Skew rolling stands, e.g. for rolling rounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling

Definitions

  • the present invention relates to the technical field of metal plastic forming processes and equipment, and in particular relates to a skew rolling mill with dual-rotatable-shafts.
  • a skew rolling mill Since skew rolling processes have such advantages as high production efficiency, high forming precision and high material utilization rate, a skew rolling mill has been widely applied in the field of metal plastic forming, mainly including plastic forming of parts like steel grinding balls, bearing steel balls, bearing steel ball rollers, anodic phosphor copper balls, anchor rods, oxy-piercing steel cores, anti-skid nails, threaded rods, lead screws and spline shafts. Due to the advantages of no damage to surface fiber of a formed piece, improvement to surface performance, high material utilization rate, and high production efficiency, the skew rolling mill has now been widely adopted by the market.
  • a frame type skew rolling mill that adopts a frame type structure and has the advantages of large mechanical stiffness, reliability in use and the like is a main device for large-tonnage skew rolling forming of steel grinding balls, bearing steel balls, bearing steel ball rollers, anodic phosphor copper balls, anchor rods, oxy-piercing steel cores, anti-skid nails and the like currently.
  • the defects of being large in tonnage, having many parts involved, being complicated in mounting and debugging, being not compact in device structure and the like also exist.
  • a machine tool type skew rolling mill that adopts a machine tool type structure, is equipped with an automatic system and has the advantages of being compact in device structure, being simple in mounting and debugging and the like, is the main device for forming processes including roll threading, spline rolling, linear knurling, knurling, lead screw rolling, rolling-cutting and the like in the market currently.
  • the skew rolling mill is generally used for warm and cold forming of small- and medium-sized parts.
  • a clamp type skew rolling mill that adopts a structure in which a left clamp and a right clamp rotate around a middle rotatable shaft and has the advantages of being simple in debugging, having few parts involved, being easy in manufacturing, small in device weight and the like, is slightly applied to such aspects as forming, roll threading, spline rolling and the like of small-sized ball parts.
  • the defects of being not high in stiffness, large in work noise, complicated in adjustment of a guide plate and the like exist.
  • the objective of the present invention is to overcome defects of the prior art and provide a skew rolling mill with dual-rotatable-shafts, which adopts a dual-rotating-shaft structure, and realizes the effect that two beds are synchronously centered and pressed down by means of synchronizing gears.
  • the rolling unit comprises a left roll system, a right roll system, a left roller and a right roller;
  • the left roll system and the right roll system each include a main shaft, a feeding end bearing seat, a discharging end bearing seat, a coupler and a thread bushing;
  • the couplers are connected to the main shafts for inputting power for the main shafts;
  • the rollers are mounted on the main shafts;
  • the main shafts are jointly supported by the feeding end bearing seats and the discharging end bearing seats;
  • the feeding end bearing seats are fixedly mounted on the discharging end bearing seats; and
  • the discharging end bearing seats are supported by the beds and are fixed by the thread bushings and locking bolts which are matched with each other.
  • circular arc segments are processed on lower end surfaces of side back plates of the discharging end bearing seats, and the axes of the circular arc segments coincide with the horizontal rolling center line;
  • the discharging end bearing seats are capable of rotating around the horizontal rolling center line so as to adjust the size of the tilt angles ⁇ ;
  • the middles of the side back plates of the discharging end bearing seats are fixedly provided with the thread bushings, and the axes of the thread bushings coincide with the horizontal rolling center line;
  • the thread bushings are matched with locking bolts, and the left roll system and the right roll system are respectively fixed on the left bed and the right bed by the locking bolts;
  • the horizontal rolling center line is a connecting line of geometric centers of the left roller and the right roller.
  • the bed synchronizing unit comprises a left synchronizing gear and a right synchronizing gear, which are respectively fixed on the left bed and the right bed; the left synchronizing gear and the right synchronizing gear are respectively coaxial with the left bed rotatable shaft and the right bed rotatable shaft; the left synchronizing gear and the right synchronizing gear are engaged, thus enabling the rotation motion of the left bed and the right bed around the left bed rotatable shaft and the right bed rotatable shaft respectively to be changed into the opposite-direction motion at the same speed.
  • the roller distance adjusting unit comprises a pull rod, an adjusting nut, a locking nut, a cylindrical block, a cylindrical gasket and a spherical gasket; the cylindrical gasket and the spherical gasket are fixed on upper ends of the beds, and the cylindrical block is fixed to the pull rod; the cylindrical block is capable of rotating around the cylindrical gasket, and the adjusting nut is capable of rotating around the spherical gasket; the opening distance between the upper part of the left bed and the upper part of the right bed can be adjusted by rotating the adjusting nut, thereby changing the roller spacing between the left roller and the right roller.
  • graduations are processed on the pull rod and the adjusting nut, or the pull rod and the adjusting nut are provided with graduated rulers.
  • the tilt angle adjusting units are a plurality of screw-down nuts; the left bed and the right bed are each provided with two screw-down nuts, and the screw-down nuts are respectively disposed at the upper parts of the feeding end bearing seats and the discharging end bearing seats; and when the screw-down nuts are rotated, the discharging end bearing seats can be made to rotate around the horizontal rolling center line, thus adjusting the size of the tilt angles ⁇ .
  • the base unit comprises a base, a bed rotatable shaft seat and a bed rotatable shaft cover; the bed rotatable shaft seat is fixed on the base, and the bed rotatable shaft cover is arranged on the rotatable shaft seat; and the bed rotatable shaft seat and the bed rotatable shaft cover are upper and lower split seats of the bed rotatable shafts, and bed rotatable shaft mounting holes are processed in the bed rotatable shaft seat and the bed rotatable shaft cover with the axis of the billet as a symmetry center.
  • the guide plate unit comprises a guide plate seat, a feeding guide cylinder, a middle guide plate and a discharging guide slot;
  • the guide plate seat is fixed on the base;
  • the feeding guide cylinder, the middle guide plate and the discharging guide slot are all fixed to the upper part of the guide plate seat; and
  • the feeding guide cylinder and the middle guide plate are capable of preventing swing of the billet and limiting the rotation of the billet between two rollers, and the discharging guide slot is used for guiding a formed piece out.
  • the skew rolling mill with dual-rotatable-shafts is used for cold rolling or hot rolling, wherein the cold rolling temperature is room temperature, and the hot rolling temperature is 600 DEG to 1400 DEG
  • X-X- axis of billet X L -X L - axis of left roll system and axis of left roller
  • X R ⁇ ⁇ X R ⁇ ⁇ axis of right bed rotatable shaft and axis of right synchronizing gear Y-Y- horizontal rolling center line, and O-O- axis of pull rod.
  • an embodiment of the present invention provides a skew rolling mill with dual-rotatable-shafts, comprising a base unit, a guide plate unit, a left rotatable shaft 6L, a right rotatable shaft 6R, a left bed 3L, a right bed 3R, a left synchronizing gear 2L, a right synchronizing gear 2R, a left roll system, a right roll system, a left roller 4L, a right roller 4R, tilt angle adjusting bolts 15 and a roller distance adjusting unit.
  • the base unit is fixed on a mounting foundation and is used for fixing a skew rolling mill body.
  • the base unit comprises a base 1, a bed rotatable shaft seat 12 and a bed rotatable shaft cover 11.
  • the bed rotatable shaft seat 12 is fixedly mounted on the base 1 by virtue of threads or welding, and the bed rotatable shaft cover 11 is fastened to and mounted on the rotatable shaft seat 12 by bolts.
  • the guide plate unit is fixedly mounted on the base part and comprises a guide plate seat 10, a feeding guide cylinder 7, a middle guide plate 8, and a discharging guide slot 9.
  • the feeding guide cylinder 7, the middle guide plate 8 and the discharging guide slot 9 are fixed to the guide plate seat 10 by means of threads.
  • the feeding guide cylinder 7 and the middle guide plate 8 can prevent swing of a billet and limit the rotation of the billet between the two rollers, and the discharging guide slot 9 is used for guiding a formed piece out.
  • the left bed rotatable shaft 6L and the right bed rotatable shaft 6R are the same in geometric dimensions, are symmetrically arranged about the axis X-X of the billet and are mounted under the support of the rotatable shaft seat 12 and the rotatable shaft cover 11.
  • the left bed 3L and the right bed 3R are the same in geometric dimensions, are symmetrically arranged about the axis X-X of the billet and are respectively mounted under the support of the left bed rotatable shaft 6L and the right bed rotatable shaft 6R, such that the left bed 3L and the right bed 3R can do rotation motion around the left bed rotatable shaft 6L and the right bed rotatable shaft 6R respectively.
  • the left synchronizing gear 2L and the right synchronizing gear 2R are the same in geometric dimensions and are respectively fixed onto the left bed 3L and the right bed 3R, the axis X L ⁇ ⁇ X L ⁇ coincides with the axis X L ⁇ ⁇ X L ⁇ of the left bed rotatable shaft 6L, and the axis X R ⁇ ⁇ X R ⁇ coincides with the axis X R ⁇ ⁇ X R ⁇ of the right rotatable shaft 6R.
  • the left synchronizing gear 2L and the right synchronizing gear 2R are engaged, thus enabling the rotation motion of the left bed 3L and the right bed 3R around the left bed rotatable shaft 6L and the right bed rotatable shaft 6R respectively to be changed into the opposite-direction motion at the same speed, so that the left bed 3L and the right bed 3R can be synchronously centered and pressed down, and accordingly it is guaranteed that the vertical center line of the skew rolling mill does not offset.
  • the left roll system and the right roll system which are the same in forming components and geometric dimensions and can rotate around the horizontal rolling center line Y-Y of the skew rolling mill, are arranged at two sides of the axis X-X of the billet, are staggered with the axis X-X of the billet at an tilt angle ⁇ and are respectively mounted under the support of the left bed 3L and the right bed 3R.
  • the left roll system and the right roll system each comprise a main shaft 18, a feeding end bearing seat 14, a discharging end bearing seat 17, a coupler 19 and a thread bushing 16.
  • Circular arc segments (matched with circular arc parts disposed on the beds) are processed on the lower end surfaces of side back plates of the discharging end bearing seats 17, and the axes of the circular arc segments coincide with the vertical rolling center line Y-Y of the skew rolling mill.
  • the middles of the side back plates of the discharging end bearing seats 17 are fixedly provided with the thread bushings 16, and the axes of the thread bushings 16 coincide with the horizontal rolling center line Y-Y of the skew rolling mill.
  • the discharging end bearing seats 17 can be adjusted by the screw-down nuts to rotate around the horizontal rolling center line Y-Y so as to adjust the size of the tilt angles ⁇ .
  • the thread bushings 16 are matched with locking nuts for respectively fixing the left roll system and the right roll system onto the left bed 3L and the right bed 3R.
  • the left bed 3L, the right bed 3R and the discharging end bearing seats 17 are all provided with tilt angle graduated rulers 13 for displaying the size of the tilt angles ⁇ .
  • the left roller 4L and the right roller 4R are the same in geometric dimensions, the axis X L -X L of the left roller coincides with the axis X L -X L of the left roll system, and the axis X R -X R of the right roller coincides with the axis X R -X R of the right roll system.
  • the tilt angle adjusting bolts 15 are arranged at the upper parts of the discharging end bearing seats 17. By rotating the tilt angle adjusting bolts 15, the discharging end bearing seats 17 are made to rotate around the horizontal rolling center line Y-Y, thus adjusting the tilt angle ⁇ .
  • the roller distance adjusting unit is arranged at the upper ends of the left bed 3L and the right bed 3R, and comprises a pull rod 5, an adjusting nut 24, a locking nut 22, a cylindrical block 20, a cylindrical gasket 21 and a spherical gasket 23.
  • the cylindrical gasket 21 and the spherical gasket 23 are fixed to the beds, and the cylindrical block 20 is fixed to the pull rod 5.
  • the cylindrical block 20 can rotate around the cylindrical gasket 21, and the adjusting nut 24 can rotate around the spherical gasket 23.
  • graduations are processed on the pull rod 5 and the adjusting nut 23, or the pull rod 5 and the adjusting nut 23 are provided with graduated rulers.
  • the adjusting nut 24 can adjust the opening distance between the upper part of the left bed 3L and the upper part of the right bed 3R, thus adjusting the roller spacing between the left roller 4L and the right roller 4R.
  • the working principle of the present invention is: the billet heated to the rolling temperature (room temperature for cold rolling and the temperature of 600 DEG to 1400 DEG for hot rolling) is transferred into the skew rolling mill, power is inputted by the couplers 19, the inputted power is respectively transferred to the left roller 4L and the right roller 4R by the main shafts 18, so as to drive the left roller 4L and the right roller 4R to do same-direction synchronous rotation motion. Under the action of the friction force of the rollers/the billet, the billet is subjected to skew rolling forming between the left roller 4L and the right roller 4R.
  • the skew rolling mill has the advantages that the beds are synchronously centered and pressed down, the vertical center line does not offset, the strength of the beds is high, the mounting and debugging are simple and the like such that the skew rolling mill can be applied to mass skew rolling forming of middle- and small-sized parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP20180751.8A 2019-06-20 2020-06-18 Skew rolling mill with dual-rotatable-shafts Pending EP3756785A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910539248.8A CN110193516B (zh) 2019-06-20 2019-06-20 一种双转轴式斜轧机

Publications (1)

Publication Number Publication Date
EP3756785A1 true EP3756785A1 (en) 2020-12-30

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Application Number Title Priority Date Filing Date
EP20180751.8A Pending EP3756785A1 (en) 2019-06-20 2020-06-18 Skew rolling mill with dual-rotatable-shafts

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EP (1) EP3756785A1 (zh)
CN (1) CN110193516B (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113967708A (zh) * 2021-11-26 2022-01-25 广东欧亚包装有限公司 一种ropp螺口器
IT202200000959A1 (it) * 2022-01-20 2023-07-20 Evirt Italia S R L Macchina rullatrice per realizzare impronte su corpi cilindrici e procedimento per sostituire un rullo formatore di detta macchina rullatrice

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CN110743993B (zh) * 2019-10-25 2021-06-01 北京科技大学 以金属线材为原料的斜轧零件自动化生产装置
CN111299323B (zh) * 2020-02-27 2021-06-01 北京科技大学 一种双转轴式电动伺服柔性斜轧机
CN111420995B (zh) * 2020-02-27 2021-06-15 北京科技大学 一种双转轴式电动伺服柔性斜轧机的多功能控制系统
CN112045120B (zh) * 2020-08-26 2022-01-28 太原科技大学 一种直齿轮传动的双环辊旋轧机构
CN111804855B (zh) * 2020-08-26 2022-08-02 太原科技大学 一种三自由度旋轧机
CN114589199B (zh) * 2022-03-11 2023-08-15 北京科技大学 一种可实现精密楔横轧制的成形装置
CN114798718B (zh) * 2022-03-11 2023-05-05 北京科技大学 一种倾斜式精密楔横轧成形装置
CN218310359U (zh) * 2022-07-07 2023-01-17 无锡先导智能装备股份有限公司 压辊驱动装置及用于锂电池极片集流体的滚压装置

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US3269161A (en) * 1964-03-30 1966-08-30 Kinefac Corp Die roll forming and finishing machine
DE2810460A1 (de) * 1977-03-14 1978-09-21 Proizv Ob Elektrostaltyaschmas Walzwerkgeruest zum schraegwalzen von drehkoerpern
US4322961A (en) * 1980-02-26 1982-04-06 Kinefac Corp. Die rolling machine
JP2963221B2 (ja) * 1991-03-14 1999-10-18 トピー工業株式会社 水平圧延機
EP1125648A2 (en) * 2000-02-16 2001-08-22 Morgan Construction Company Housingless roll stand
CN101088656A (zh) * 2007-06-07 2007-12-19 常熟市钢强金属制品厂 棒材轧球机的成球机构
CN103464658B (zh) * 2013-09-29 2015-09-23 常熟市非凡金属制品有限公司 轧钢球机的成球辊自动调整式成球装置
CN104190831B (zh) * 2014-08-13 2016-05-04 西安交通大学 一种棒材轧球机
CN205797991U (zh) * 2016-06-16 2016-12-14 邵胜太 一种短应力线二辊卧式斜轧机
CN105013992B (zh) * 2015-07-31 2017-03-15 江阴东邦钢球机械有限公司 钢球旋切机

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JPS62267006A (ja) * 1986-05-14 1987-11-19 Sumitomo Heavy Ind Ltd 傾斜ロ−ル支持装置
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Publication number Priority date Publication date Assignee Title
US3269161A (en) * 1964-03-30 1966-08-30 Kinefac Corp Die roll forming and finishing machine
DE2810460A1 (de) * 1977-03-14 1978-09-21 Proizv Ob Elektrostaltyaschmas Walzwerkgeruest zum schraegwalzen von drehkoerpern
US4322961A (en) * 1980-02-26 1982-04-06 Kinefac Corp. Die rolling machine
JP2963221B2 (ja) * 1991-03-14 1999-10-18 トピー工業株式会社 水平圧延機
EP1125648A2 (en) * 2000-02-16 2001-08-22 Morgan Construction Company Housingless roll stand
CN101088656A (zh) * 2007-06-07 2007-12-19 常熟市钢强金属制品厂 棒材轧球机的成球机构
CN103464658B (zh) * 2013-09-29 2015-09-23 常熟市非凡金属制品有限公司 轧钢球机的成球辊自动调整式成球装置
CN104190831B (zh) * 2014-08-13 2016-05-04 西安交通大学 一种棒材轧球机
CN105013992B (zh) * 2015-07-31 2017-03-15 江阴东邦钢球机械有限公司 钢球旋切机
CN205797991U (zh) * 2016-06-16 2016-12-14 邵胜太 一种短应力线二辊卧式斜轧机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113967708A (zh) * 2021-11-26 2022-01-25 广东欧亚包装有限公司 一种ropp螺口器
IT202200000959A1 (it) * 2022-01-20 2023-07-20 Evirt Italia S R L Macchina rullatrice per realizzare impronte su corpi cilindrici e procedimento per sostituire un rullo formatore di detta macchina rullatrice

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CN110193516B (zh) 2021-02-05

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