WO2020015554A1 - Machine composite à forger et à former de tube métallique par laminage - Google Patents

Machine composite à forger et à former de tube métallique par laminage Download PDF

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Publication number
WO2020015554A1
WO2020015554A1 PCT/CN2019/095280 CN2019095280W WO2020015554A1 WO 2020015554 A1 WO2020015554 A1 WO 2020015554A1 CN 2019095280 W CN2019095280 W CN 2019095280W WO 2020015554 A1 WO2020015554 A1 WO 2020015554A1
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WIPO (PCT)
Prior art keywords
forming
rolling
die
frame
forging
Prior art date
Application number
PCT/CN2019/095280
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English (en)
Chinese (zh)
Inventor
韩静涛
郝庆乐
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韩静涛
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Filing date
Publication date
Application filed by 韩静涛 filed Critical 韩静涛
Publication of WO2020015554A1 publication Critical patent/WO2020015554A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length

Definitions

  • the invention relates to the field of metal pipe forming equipment, and more particularly, to a compound forging and rolling metal pipe forming machine.
  • the equipment used for tube forming in the industry mainly consists of cyclic tube rolling mills, three-roll skew rolling mills and tension reducers.
  • the cyclic tube rolling machine feeds the tube material into a rolling groove composed of a core rod and a periodically reciprocating hole shape at a certain frequency.
  • the inner wall is supported by the core rod and gradually shrinks and changes the shape of the rolled tube blank.
  • the common type of cyclic tube rolling mill is mainly the two-roller Pilger rolling mill.
  • due to the reciprocating movement of the stand and rolls during the rolling process there are many moving parts and large inertia, which results in poor stability of the rolling process, and the rolling mill structure is complex, Maintenance and adjustment are more difficult; the dimensional accuracy of the tubes rolled by the two-roll mill is low, and the surface quality is poor.
  • the three rolls of the three-roll skew rolling mill are uniformly arranged around the rolling centerline at 120 °, and the roll axis is inclined and crossed at a certain angle (that is, the rolling angle and the feeding angle) to make the tube
  • the billet spirally advances under the action of the roll, and the outer surface of the rolled pipe will form a "spiral line", which affects the surface quality, and the "triangular" defect at the tail is easy to cause rolling.
  • the three-roller tension reducer generally consists of a series of holes with more than 10 frames.
  • the tension is provided by the speed difference between the speeds of the rolls of the adjacent frames, thereby completing the hollow reduction of the billet.
  • due to the large number of frames Therefore, the equipment investment is large, the production line is long, the floor area is large, and the equipment adjustment and control are more complicated.
  • the present invention provides a composite forging and rolling metal tube forming machine, which has fewer moving parts, less inertia, and stable rolling process; multi-directional forming can not only reduce the force of a single mold, but also It can improve the dimensional accuracy and surface quality of pipes; meanwhile, the number of racks is small, and the equipment investment is low.
  • the object of the present invention is to provide a composite forging and rolling metal tube forming machine.
  • feeding device Including: feeding device, compound forging and rolling forming device and transmission device connected in sequence;
  • the composite forging and rolling forming device includes: forming die, bearing block connecting rod, stroke spur gear, rack, die track frame, forming frame; forming die is composed of three sector blocks, and is equidistant around the central axis of the tube blank at 120 ° Arrangement: With each fan-shaped mold block as the center, the bearing seat connecting rod and the stroke spur gear are symmetrically arranged on both sides, and the three are set on the same mold shaft; the forming mold is set on the mold rail frame, and the mold rail frame and the forming Frame fixed connection;
  • the transmission device includes: a transmission frame, a main transmission shaft, an intermediate transmission shaft, a transmission bevel gear and an eccentric wheel; the end of the transmission mechanism is three eccentric wheels, and the eccentric wheel is connected to the transmission bevel gear through the eccentric shaft; and the transmission bevel gear and The main drive shaft or intermediate drive shaft is connected; the main drive shaft and the intermediate drive shaft are placed in the drive frame through bearing positioning;
  • the three eccentric wheels are respectively connected to the bearing seat connecting rod of the compound forging and rolling device through the eccentric connecting rod.
  • the composite forging and rolling metal pipe forming machine further includes an induction heating device; the induction heating device is arranged between the feeding device and the composite forging and rolling forming device; the induction heating device is used for heating the blank during hot forming;
  • the induction heating device includes an induction heating coil and an induction heating equipment control cabinet.
  • the composite forging and rolling metal pipe forming machine further includes a material receiving device
  • the material receiving device is arranged after the composite forging and rolling forming device
  • the linear stroke range of the die block in the rolling direction is 0 to 325 mm, and the swing angle range of the die block is 0 to 116.5 °.
  • the moving displacement and rotation angle of the die are controlled by the stroke spur gear, so there is a strict correspondence at each moment.
  • the material receiving device and the material feeding device described above can adopt the material pick-up device commonly used in the prior art, and can achieve the effect of material pick-up.
  • a composite forging and rolling metal tube forming machine It consists of four parts: (1) the material transfer device, including the material receiving and feeding frame, is mainly composed of the blank feeding mechanism, the blank holding mechanism and the blank rotation mechanism, which can accurately control the tightening and relaxation of the blank, feeding and retreating And rotating action; (2) induction heating device, mainly composed of induction heating equipment and induction heating coil, mainly used for heating the blank during hot forming; (3) composite forging and rolling forming device, mainly composed of three fan-shaped die blocks Hole-making type, and at the same time cooperate with the corresponding core mold device to complete the forming of the blank; (4) The transmission device is mainly composed of a driving shaft and a driving gear and a corresponding crank link mechanism, and the mold can be moved by a motor-driven transmission device Synchronization and precise control.
  • the hydraulic chuck in the feeding (connecting) device is the blank holding mechanism, which provides the holding force required for the blank through hydraulic pressure to control the tightening and loosening of the blank; the hydraulic chuck is installed on the protrusion from the chuck seat.
  • One end of the shaft and the other end of the shaft are connected with a pair of reduction gears through a flat key.
  • the rotation of the reduction gear is controlled by a servo motor installed above the chuck seat.
  • the rotation of the blank can be realized by programming the servo motor; the above components are It is installed on a walking cart.
  • the walking cart is driven by a motor and moves forward and backward on the positioning guide by the walking guide wheel.
  • the induction heating device is mainly composed of an induction heating coil and an induction heating equipment control cabinet.
  • the composite forging and rolling forming device includes a forming die, a bearing link, a stroke spur gear, a rack, a mold rail frame, a fixed forming frame, and the like.
  • the forming die is composed of three fan-shaped blocks, and is arranged at an equal distance of 120 ° around the central axis of the tube blank (that is, the rolling centerline).
  • the profile of each fan-shaped block includes reducing, reducing, and sizing sections, which can realize the blank.
  • Forming; with each fan-shaped mold block as the center, the bearing seat connecting rod and the stroke spur gear are symmetrically arranged on both sides thereof, and the three are installed on the same mold shaft.
  • the bearing block connecting rod is reciprocated and linearly moved by the transmission mechanism.
  • This movement is transmitted by the mold shaft to make the stroke spur gear reciprocate linearly and rotationally on the rack meshing with it; due to the fan-shaped mold block and the stroke spur gear During the movement, it is relatively stationary, so each fan-shaped mold block also performs reciprocating rectilinear and rotary motions at the same time.
  • the above components are placed in the mold rail frame, and the rail frame and the fixed forming frame are firmly connected by bolts, and the two remain stationary during the forming process.
  • the linear stroke range of the die along the rolling direction is 0 to 325mm, and the die swing angle range is 0 to 116.5 °.
  • the moving displacement and rotation angle of the die are controlled by the spur gear, so there is a strict correspondence at every moment.
  • Transmission devices include: transmission frame, main transmission shaft, intermediate transmission shaft, transmission bevel gear, eccentric wheel, etc.
  • the power of the motor is input by the main drive shaft, and the "one drag three" multi-direction distribution is realized through the intermediate drive shaft and the transmission bevel gear.
  • the connecting rods are connected to form three sets of crank connecting rod mechanisms, thereby realizing the reciprocating linear movement of the bearing block connecting rods; the three eccentric wheels rotate at the same speed and the same angle of rotation, which ensures the synchronization of the movement of the three sector mold blocks.
  • the forming steps of the metal pipe blank of the present invention are:
  • the motor of the walking carriage is started, which drives the guide 3 of the walking carriage to move on the positioning guide, so as to push the blank forward.
  • the blank is heated by the induction heating coil and sent to the forming frame (directly after the blank is fed during cold forming) Into the forming frame);
  • the servo motor will drive a pair of reduction gears to rotate the hydraulic chuck and the billet by 15 to 90 °, while continuing to feed the billet into the swing forming frame to form again;
  • the forming mold described in the present invention is composed of three fan-shaped swinging mold blocks, which are arranged at an equal distance around the central axis of the tube blank.
  • the mold blocks are synchronously swung by a crank link mechanism driven by a motor, and the mold blocks are connected around it. While the shaft is rotating, the connecting shaft is performing reciprocating linear motion.
  • the linear stroke range of the mold along the rolling direction is 0 to 325 mm, and the mold swing angle range is 0 to 116.5 °. At each moment, its displacement and rotation angle strictly correspond.
  • the splicing device described in the present invention is used to form a blank with a fixed length of 0.5-10m.
  • the splicing device may not be used; the induction heating device is used for heating the blank during thermoforming. , Not used during cold forming;
  • the present invention has the following beneficial effects:
  • the rolling process is stable, avoiding equipment vibration caused by the reciprocating movement of the cyclic tube rolling mill frame; the number of frames is small, which is convenient for adjustment and control; continuous forming will not cause rolling card or tail "triangular" defects; the total equipment investment is low, accounting for The floor area is small.
  • FIG. 1 is a schematic diagram of a composite forging and rolling metal pipe forming machine according to the present invention
  • FIG. 2 is a schematic diagram of a transmission device of the present invention
  • FIG. 3 is a schematic diagram of a composite forging and rolling forming apparatus according to the present invention.
  • Fig. 4 is a side sectional view of Fig. 3
  • FIG. 5 is a schematic diagram of an induction heating coil of the present invention.
  • FIG. 6 is a schematic diagram of a core mold device according to the present invention.
  • FIG. 7 is a schematic diagram of a feeding device of the present invention.
  • FIG. 8 is a schematic diagram of a receiving device of the present invention.
  • feeding device Including: feeding device, compound forging and rolling forming device, transmission device, induction heating device and receiving device connected in sequence;
  • the composite forging and rolling forming device includes: forming die, bearing block connecting rod, stroke spur gear, rack, die track frame, forming frame; forming die is composed of three sector blocks, and is equidistant around the central axis of the tube blank at 120 ° Arrangement: With each fan-shaped mold block as the center, the bearing seat connecting rod and the stroke spur gear are symmetrically arranged on both sides, and the three are set on the same mold shaft; the forming mold is set on the mold rail frame, and the mold rail frame and the forming Frame fixed connection;
  • the transmission device includes: a transmission frame, a main transmission shaft, an intermediate transmission shaft, a transmission bevel gear and an eccentric wheel; the end of the transmission mechanism is three eccentric wheels, and the eccentric wheel is connected to the transmission bevel gear through the eccentric shaft; and the transmission bevel gear and The main drive shaft or intermediate drive shaft is connected; the main drive shaft and the intermediate drive shaft are placed in the drive frame through bearing positioning;
  • the three eccentric wheels are respectively connected to the bearing seat connecting rod of the compound forging and rolling device through the eccentric connecting rod.
  • the induction heating device is arranged between the feeding device and the composite forging and rolling forming device; the induction heating device is used for heating the blank during hot forming; the induction heating device includes: an induction heating coil and an induction heating equipment control cabinet.
  • the material receiving device is arranged after the composite forging and rolling forming device
  • the linear travel range of the mold block in the rolling direction is 0 to 325 mm, and the swing angle range of the mold block is 0 to 116.5 °.
  • the moving displacement and rotation angle of the mold are controlled by the spur gear, so there is a strict correspondence at each moment.
  • the blank 6 is installed on the feeding frame 8.
  • the front of the blank is supported by the feeding support roller 26, and the tail of the blank is tightened by the hydraulic chuck 27 to ensure that the core mold 7 passes through the inner hole of the blank 6.
  • the trolley motor 38 starts And guide the trolley 33 on the positioning guide 34 to move the billet.
  • the billet enters the induction heating coil 4, it is quickly heated to the target temperature, and then sent to the forming frame 3 (blank feed during cold forming) And then directly into the forming frame without heating).
  • three fan-shaped mold blocks 21 are arranged at an equal distance of 120 ° around the central axis of the tube blank.
  • the fan-shaped mold blocks 21 and a pair of stroke spur gears 23 are fixed on the mold shaft 22 through a flat key connection, and the bearing seat is connected to The rod 20 cooperates with the mold shaft 22 through the bearing.
  • the stroke spur gear reciprocates and linearly moves on the rack 24.
  • the sector mold block, the stroke spur gear, the bearing block connecting rod, the mold shaft and the rack are installed on the mold track frame.
  • the mold rail frame is fixed on the forming frame 3 by bolting.
  • the motor drives the main transmission shaft 11 and rotates through the bevel gear A12 and the intermediate transmission shaft 16, driving the bevel gear B13, the bevel gear C14, the bevel gear D15, and the eccentric shaft 17 and the eccentric 18 to rotate.
  • the eccentric wheel 18 is connected to the bearing block connecting rod 20 through a connecting shaft 19 and an eccentric link 9 and drives a spur gear and a mold to perform synchronous reciprocating rotation and linear motion.
  • the reduction pinion 29, the reduction gear 30, and the hydraulic chuck 27 are driven by the servo motor 28 to rotate the billet by 15-90 °, while continuing to feed the billet into the re-formation.
  • the front end of the blank enters the receiving rack 1, it is supported by the receiving support roller 39, the front end of the blank is tightened by the hydraulic chuck of the receiving rack 1, and the hydraulic chuck of the feeding rack 8 loosens the tail end of the blank.
  • the blank is further formed by the receiving device until the entire tube blank is formed, and then the blank is cooled and cut to a certain length.
  • the Q235 high frequency straight seam welded pipe is selected as the blank, the original outer diameter of the blank is 86mm, the wall thickness is 4.5mm, and the fixed length is 3m;
  • the starting carriage motor 38 drives the feeding hydraulic cylinder motor gear 39 to rotate on the feeding positioning guide 32, the starting carriage motor 38 starts and drives the walking trolley guide wheel 33 to move on the positioning guide 34, and drives the blank to enter at 1.5m / min.
  • the feed speed is advanced by 25mm, and the billet is heated to 1000 ° C through the induction heating coil 4 and sent to the forming frame 3;
  • the copper tube is selected as the blank, the original outer diameter of the blank is 60mm, the wall thickness is 4mm, and the length of the fixed length is 6m;
  • the starting of the trolley motor 38 drives the feeding hydraulic cylinder motor gear 39 to rotate on the feed positioning guide 32.
  • the trolley motor 38 starts and drives the trolley guide wheel 33 to move on the positioning guide 34, which drives the blank to feed at 3m / min.
  • the speed is advanced by 10mm and fed into the forming frame 3;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

L'invention concerne une machine composite à forger et à former de tube métallique par laminage, comprenant : un dispositif d'alimentation, un dispositif composite de forgeage et de formage par laminage et un dispositif de transmission, reliés séquentiellement. Le dispositif composite de forgeage et de formage par laminage comprend : une matrice de formage, une bielle de siège de palier (20), un engrenage droit à course (23) , une crémaillère (24), un cadre guide-matrice (25) et un cadre de formage (3). La matrice de formage est constituée de trois blocs formant secteurs (21) qui sont placés de façon équidistante à 120 degrés autour de l'axe central d'une ébauche de tube. En prenant comme centre chaque bloc de matrice formant secteur, la bielle de siège de palier et l'engrenage droit de à course sont disposés symétriquement sur deux côtés de ce-dernier, respectivement, les trois blocs étant disposés sur le même arbre de matrice (22). La matrice de formage est disposée dans le cadre guide-matrice. Le cadre guide-matrice est relié de manière fixe au cadre de formage. La machine de formage comprend peu d'éléments mobiles, présente une faible inertie et offre un procédé de laminage stable. Le formage multidirectionnel peut non seulement réduire la pression d'une seule matrice, mais également augmenter la précision dimensionnelle et la qualité de surface d'un tube. De plus, le nombre de cadres est réduit et l'investissement en termes d'équipement est faible.
PCT/CN2019/095280 2018-07-17 2019-07-09 Machine composite à forger et à former de tube métallique par laminage WO2020015554A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810785432.6 2018-07-17
CN201810785432.6A CN110722003A (zh) 2018-07-17 2018-07-17 一种复合锻轧金属管成形机

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WO2020015554A1 true WO2020015554A1 (fr) 2020-01-23

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112222199B (zh) * 2020-09-19 2022-05-13 太原科技大学 一种高精度、重载三辊冷轧机

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JPS645632A (en) * 1987-06-30 1989-01-10 Otani Kikai Seisakusho Kk Vertical type roll forging machine
CN2456862Y (zh) * 2000-09-26 2001-10-31 刘守光 多工序一次成形机
CN1519064A (zh) * 2003-01-24 2004-08-11 王晓邦 一种长行程往复式轧管机
CN2801310Y (zh) * 2005-05-26 2006-08-02 佛山市顺德区冠邦科技有限公司 一种冷轧管机的轧辊布局及其传动机构
CN101249603A (zh) * 2008-04-09 2008-08-27 宝鸡市浩源特种材料有限公司 高强度高硬度合金的轧锻一体化工艺及其轧锻设备
WO2016207016A1 (fr) * 2015-06-22 2016-12-29 Manyo Co., Ltd. Machine de forgeage par laminage et procédé de forgeage par laminage
CN206261186U (zh) * 2016-08-18 2017-06-20 江西金虎保险设备集团有限公司 一种圆锥齿轮传动桥式全驱承载式底架
CN208495380U (zh) * 2018-07-17 2019-02-15 韩静涛 一种复合锻轧金属管成形机

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US4157025A (en) * 1977-12-05 1979-06-05 Berezin Evgeny N Method and mill for rolling metal billets
DE4336422C2 (de) * 1993-10-20 1996-10-24 Mannesmann Ag Kurbeltrieb für ein Kaltpilgerwalzwerk
CN103433293B (zh) * 2013-08-23 2016-10-05 宁波东重机械有限公司 双线冷轧管机
CN204523775U (zh) * 2015-03-31 2015-08-05 中国重型机械研究院股份公司 一种可偏心调整的轧机机架装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS645632A (en) * 1987-06-30 1989-01-10 Otani Kikai Seisakusho Kk Vertical type roll forging machine
CN2456862Y (zh) * 2000-09-26 2001-10-31 刘守光 多工序一次成形机
CN1519064A (zh) * 2003-01-24 2004-08-11 王晓邦 一种长行程往复式轧管机
CN2801310Y (zh) * 2005-05-26 2006-08-02 佛山市顺德区冠邦科技有限公司 一种冷轧管机的轧辊布局及其传动机构
CN101249603A (zh) * 2008-04-09 2008-08-27 宝鸡市浩源特种材料有限公司 高强度高硬度合金的轧锻一体化工艺及其轧锻设备
WO2016207016A1 (fr) * 2015-06-22 2016-12-29 Manyo Co., Ltd. Machine de forgeage par laminage et procédé de forgeage par laminage
CN206261186U (zh) * 2016-08-18 2017-06-20 江西金虎保险设备集团有限公司 一种圆锥齿轮传动桥式全驱承载式底架
CN208495380U (zh) * 2018-07-17 2019-02-15 韩静涛 一种复合锻轧金属管成形机

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