WO2014119120A1 - 鍛造装置および鍛造方法 - Google Patents

鍛造装置および鍛造方法 Download PDF

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Publication number
WO2014119120A1
WO2014119120A1 PCT/JP2013/082464 JP2013082464W WO2014119120A1 WO 2014119120 A1 WO2014119120 A1 WO 2014119120A1 JP 2013082464 W JP2013082464 W JP 2013082464W WO 2014119120 A1 WO2014119120 A1 WO 2014119120A1
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WO
WIPO (PCT)
Prior art keywords
forging
forming roller
central axis
mandrel
outer peripheral
Prior art date
Application number
PCT/JP2013/082464
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
拓也 助田
寛史 井下
直樹 平位
善統 石川
秀次 内藤
Original Assignee
トヨタ自動車株式会社
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 トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to KR1020157020584A priority Critical patent/KR20150103187A/ko
Priority to EP13873655.8A priority patent/EP2952273A4/en
Priority to CN201380071753.5A priority patent/CN104968450A/zh
Priority to RU2015131210A priority patent/RU2015131210A/ru
Priority to BR112015018258A priority patent/BR112015018258A2/pt
Priority to US14/764,699 priority patent/US20150352629A1/en
Publication of WO2014119120A1 publication Critical patent/WO2014119120A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K23/00—Making other articles
    • B21K23/04—Making other articles flanged articles
    • 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
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels

Definitions

  • the present invention relates to a forging device and a forging method for performing molding by pressing a forming roller against a material to expand the material in a radial direction and a central axis direction of the material.
  • Patent Document 1 discloses a forging method in which a cylindrical metal material is expanded to expand the material in the radial direction of the material.
  • a material is rotated around the central axis of the material, and a cylindrical forming roller is pressed against one end surface of the rotated material in the central axis direction of the material. Then, the molding roller is brought into contact with the material in this way, and the molding roller is lowered while being rotated with the material. Thereby, pressure is applied to the material from the forming roller, and the material can be expanded in the radial direction.
  • the forging method of Patent Document 1 can perform diameter expansion forming that expands the material in the radial direction of the material, a boss that forms a boss portion in which the central portion of the material is raised in the central axis direction of the material. Unable to perform extrusion molding. Therefore, first, after performing the step of performing diameter expansion molding by the forging method of Patent Document 1, it is necessary to separately perform the step of performing boss extrusion molding. Therefore, when manufacturing a forged product having a boss portion, a different forging device is required for each process, which increases the cost.
  • the present invention has been made to solve the above-described problems, and an object thereof is to provide a forging device and a forging method capable of manufacturing a forged product having a boss portion while reducing the cost.
  • One aspect of the present invention made to solve the above problems includes a turntable that rotates about a rotation axis, and a cylindrical forming roller, and a cylindrical material is made of the material by the turntable.
  • the forming roller In the forging device that forges the material by pressing the outer peripheral surface of the forming roller against the end surface of the material in the direction of the center axis while rotating around the center axis, the forming roller is the rotating shaft.
  • the position of the end of the molding roller opposite to the rotary shaft side in the central axis direction of the molding roller from the position of the outer circumferential surface of the material after forging is arranged away from Is the outside in the radial direction of the material.
  • the outer surface of the molding roller is pressed against the end surface of the material in the direction of the center axis. It is possible to perform diameter expansion molding that expands in the radial direction. Furthermore, since the forming roller is arranged away from the rotating shaft of the turntable, the material of the material flows toward the rotating shaft with respect to the forming roller, and the central portion of the material is raised in the direction of the center axis of the material. Boss forming for forming the boss portion can be performed. Thus, diameter expansion molding and boss extrusion molding can be performed simultaneously. Therefore, a forged product having a boss portion can be manufactured while reducing the cost.
  • the position of the end portion of the outer peripheral surface of the forming roller opposite to the rotating shaft side of the rotating table in the central axis direction of the forming roller is larger in the radial direction of the material than the position of the outer peripheral surface of the material after forging. Outside.
  • the outer peripheral surface of the forming roller is pressed over a wide range at the end surface of the material in the central axis direction. Therefore, the accuracy of the end surface of the material after forging can be guaranteed by the outer peripheral surface of the forming roller. Therefore, the accuracy of the end face of the material after forging can be improved.
  • a cylindrical mandrel is provided, the center axis of the mandrel is coincident with the rotation axis, and the forming roller is on the rotation axis side in the center axis direction of the forming roller.
  • An inner end face is provided, and the distance between the central axis of the mandrel and the inner end face is preferably larger than the radius of the mandrel and smaller than the radius of the material.
  • the hollow cylindrical boss portion can be formed at the center of the material by flowing the material between the outer peripheral surface of the mandrel and the inner end surface of the forming roller. Since the material flows while adhering to the outer peripheral surface of the mandrel, desired accuracy can be secured on the inner peripheral surface of the boss portion by managing the accuracy of the outer peripheral surface of the mandrel.
  • the time for forging the material can be shortened.
  • the accuracy of the end face of the material is improved.
  • the center axis of the forming roller is substantially orthogonal to the rotation axis.
  • the mechanism for supporting the forming roller can be simplified.
  • the two molding rollers can be integrated with one shaft member while the central axes of the two molding rollers are matched. Therefore, the mechanism for supporting the two forming rollers can be simplified.
  • Another aspect of the present invention made in order to solve the above-mentioned problems uses a turntable that rotates around a rotation shaft and a cylindrical forming roller, and a cylindrical material is made into the material by the turntable.
  • the forging method of forging the material by pressing the outer peripheral surface of the forming roller against the end surface of the material in the direction of the central axis while rotating about the central axis of the material, the forming roller rotates the rotation
  • the position of the end of the forming roller that is disposed away from the shaft and is opposite to the rotating shaft side in the central axis direction of the forming roller on the outer peripheral surface of the forming roller is the position of the outer peripheral surface of the material after forging. It is characterized by being outside in the radial direction of the material.
  • the outer surface of the molding roller is pressed against the end surface of the material in the direction of the center axis. It is possible to perform diameter expansion molding that expands in the radial direction. Furthermore, since the forming roller is arranged away from the rotating shaft of the turntable, the material of the material flows toward the rotating shaft with respect to the forming roller, and the central portion of the material is raised in the direction of the center axis of the material. Boss forming for forming the boss portion can be performed. Thus, diameter expansion molding and boss extrusion molding can be performed simultaneously. Therefore, a forged product having a boss portion can be manufactured while reducing the cost.
  • the position of the end portion of the outer peripheral surface of the forming roller opposite to the rotating shaft side of the rotating table in the central axis direction of the forming roller is larger in the radial direction of the material than the position of the outer peripheral surface of the material after forging. Outside.
  • the outer peripheral surface of the forming roller is pressed over a wide range at the end surface of the material in the central axis direction. Therefore, the accuracy of the end surface of the material after forging can be guaranteed by the outer peripheral surface of the forming roller. Therefore, the accuracy of the end face of the material after forging can be improved.
  • a cylindrical mandrel is used, the center axis of the mandrel coincides with the rotation axis, and the forming roller is on the rotation axis side in the center axis direction of the forming roller.
  • An inner end face is provided, and the distance between the central axis of the mandrel and the inner end face is preferably larger than the radius of the mandrel and smaller than the radius of the material.
  • the hollow cylindrical boss portion can be formed at the center of the material by flowing the material between the outer peripheral surface of the mandrel and the inner end surface of the forming roller. Since the material flows while adhering to the outer peripheral surface of the mandrel, desired accuracy can be secured on the inner peripheral surface of the boss portion by managing the accuracy of the outer peripheral surface of the mandrel.
  • the time for forging the material can be shortened.
  • the accuracy of the end face of the material is improved.
  • the center axis of the forming roller is substantially orthogonal to the rotation axis.
  • the mechanism for supporting the forming roller can be simplified.
  • the two molding rollers can be integrated with one shaft member while the central axes of the two molding rollers are matched. Therefore, the mechanism for supporting the two forming rollers can be simplified.
  • a forged product having a boss portion can be manufactured while reducing the cost.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. It is a figure explaining a prior art. It is sectional drawing which shows the structure outline
  • FIG. 1 and FIG. 2 are sectional views showing an outline of the configuration of the forging device 1 of the present embodiment.
  • FIG. 1 shows a state before the material W is forged
  • FIG. 2 shows a state after the material W is forged.
  • the forging device 1 includes a turntable 10, a mandrel 12, a forming roller 14, roller moving means (not shown), and the like.
  • the turntable 10 rotates around the rotation axis L1. Then, the turntable 10 rotates the material W arranged on the surface 10a around the central axis of the material W.
  • the mandrel 12 is formed in a cylindrical shape.
  • the mandrel 12 is disposed on the surface 10 a of the turntable 10 so that the central axis of the mandrel 12 coincides with the rotation axis L ⁇ b> 1 of the turntable 10.
  • the mandrel 12 is inserted inside the inner peripheral surface Wa of the material W, and the outer peripheral surface 12a of the mandrel 12 and the inner peripheral surface Wa of the material W are brought into contact with each other.
  • the material W is placed on the surface 10a of the turntable 10 while being moved. Thereby, the central axis of the raw material W can be made to correspond to the rotational axis L1 and the central axis of the mandrel 12.
  • the forming roller 14 is formed in a cylindrical shape.
  • the forming roller 14 includes an outer peripheral surface 14a and an inner end surface 14b.
  • the inner end face 14b is an end face on the rotation axis L1 side of the forming roller 14 in the direction of the central axis L2.
  • two forming rollers 14 are provided.
  • the two forming rollers 14 are arranged at positions where the phases are shifted by 180 ° with respect to the rotation direction of the turntable 10.
  • the two forming rollers 14 are integrated with each other by the shaft 20 so that the central axes L2 coincide with each other.
  • the shaft 20 is attached to the housing 22 in a rotatable state. Therefore, the two forming rollers 14 integrated by the shaft 20 rotate integrally around the central axis L2 of the forming roller 14.
  • the forming roller 14 is disposed away from the rotation axis L1. That is, a gap is provided between the rotation axis L1 and the inner end surface 14b of the forming roller 14 (specifically, the intersection of the inner end surface 14b with the central axis L2).
  • the distance ⁇ 0 between the rotation axis L1 and the inner end face 14b is larger than the radius r of the mandrel 12 and smaller than the radius R0 of the material W.
  • the central axis L2 of the forming roller 14 is substantially orthogonal to the rotation axis L1. Specifically, for example, the central axis L2 intersects with the rotation axis L1 at an angle of 90 ° ⁇ 10 ° (ie, 80 ° to 100 °).
  • the material of the turntable 10, the mandrel 12, and the forming roller 14 may be, for example, cold tool steel (SKD11, SKH), cemented carbide, or the like. Further, the outer peripheral surface 14a of the forming roller 14 is a portion that contacts the material W as will be described later. Therefore, it is desirable that the outer peripheral surface 14a of the forming roller 14 is coated to maintain the surface state.
  • the roller moving means is attached to the housing 22.
  • This roller moving means moves the two forming rollers 14 parallel to the rotation axis L1 by moving the housing 22 in parallel to the direction of the rotation axis L1 of the turntable 10.
  • the roller moving means is, for example, a ball screw or a hydraulic mechanism.
  • the forging device 1 has a control unit (not shown).
  • the control unit is configured by a microcomputer, for example, and controls driving of the turntable 10 and roller moving means.
  • a hollow cylindrical material W is placed on the surface 10a of the turntable 10.
  • the mandrel 12 is inserted inside the inner peripheral surface Wa of the material W, and the center axis of the material W is made to coincide with the rotation axis L 1 of the turntable 10.
  • the height H (length in the direction of the rotation axis L1) of the mandrel 12 is larger than the height h (length in the direction of the rotation axis L1) of the material W.
  • the turntable 10 and the mandrel 12 are rotated around the rotation axis L1 (the center axis of the mandrel 12 and the center axis of the material W). And thereby, the raw material W is rotated centering on the rotating shaft L1.
  • the forming roller 14 is moved toward the material W by the roller moving means. Then, the outer peripheral surface 14 a of the forming roller 14 is pressed against the end surface Wb of the material W (the end surface on the forming roller 14 side in the central axis direction of the material W), and the forming roller 14 is brought into contact with the material W.
  • the material W is rotated around the rotation axis L1. Therefore, the molding roller 14 is rotated together with the material W by bringing the molding roller 14 into contact with the material W as described above. That is, the forming roller 14 rotates around the central axis L2.
  • the forming roller 14 is moved toward the material W by the roller moving means. Then, since pressure is applied from the forming roller 14 to the end surface Wb of the material W, the material W spreads outward in the radial direction of the material W. In this way, diameter expansion molding is performed on the material W.
  • the distance ⁇ 0 between the rotation axis L1 of the turntable 10 (the center axis of the material W) and the inner end surface 14b of the forming roller 14 is larger than the radius r of the mandrel 12 and the material W It is smaller than the radius R0 (see FIG. 1) of the material W before forging and the radius R1 (see FIG. 2) of the material W after forging the material W.
  • the outer peripheral surface 12a of the mandrel 12 and the inner end surface 14b of the forming roller 14 are separated by a distance ⁇ 1, and a gap is provided between the outer peripheral surface 12a of the mandrel 12 and the inner end surface 14b of the forming roller 14. It has been. Therefore, when pressure is applied from the forming roller 14 to the end face Wb of the material W as described above, as shown in FIG. 2, the radially inner portion of the material W faces toward the forming roller 14 in the rotation axis L1 direction. And get up. As a result, a boss Wc rising in the central axis direction of the material W is formed at the center of the material W. In this way, boss extrusion molding is performed on the material W.
  • the diameter expansion molding and the boss ejection molding can be simultaneously performed on the material W.
  • the position of the outer end portion 14c opposite to the rotation axis L1 side in the central axis L2 direction on the outer peripheral surface 14a of the forming roller 14 is It is on the outer side in the radial direction of the material W from the position of the outer peripheral surface Wd of the material W after forging. Accordingly, the outer peripheral surface 14a of the forming roller 14 is pressed over a wide range at the end surface Wb of the material W in the radial direction of the material W from the start to the end of the forging of the material W. Therefore, the accuracy of the end surface Wb of the material W after forging can be guaranteed by the outer peripheral surface 14 a of the forming roller 14. Therefore, the accuracy of the end face Wb of the material W after forging is improved.
  • the forging device 1 can perform diameter expansion molding and boss extrusion molding with a lower load than conventional die forging (forging using a molding die).
  • FIG. 7 an example in which the mandrel 12 is separate from the turntable 10 as shown in FIG.
  • FIG. 7 an example in which the surface 10a of the turntable 10 is inclined and the outer peripheral surface 14a of the forming roller 14 is inclined with respect to the central axis L2 is also conceivable.
  • 8 and 9 splines may be formed on the outer peripheral surface 12a of the mandrel 12.
  • the boss portion Wc can be formed while forming a spline on the inner peripheral surface Wa of the material W.
  • FIG. 10 the example which makes the surface 10a of the turntable 10 into a waveform shape is also considered.
  • a forging device that does not have a mandrel 12 as shown in FIG.
  • the raw material W before forging is formed in a solid cylindrical shape. 6 to 8, 10, and 11 show a part of the forging device.
  • the present embodiment includes a turntable 10 that rotates around a rotation axis L1 and a cylindrical forming roller 14, and the turntable 10 rotates a cylindrical material W around the center axis of the material W.
  • the forming roller 14 In the forging device 1 that forges the material W by pressing the outer peripheral surface 14a of the forming roller 14 against the end surface Wb of the material W in the central axis direction, the forming roller 14 is separated from the rotation axis L1.
  • the position of the outer end portion 14c on the outer peripheral surface 14a of the forming roller 14 opposite to the rotation axis L1 side in the direction of the central axis L2 of the forming roller 14 is the outer peripheral surface Wd of the material W after forging. It is outside in the radial direction of the material W from the position of.
  • the outer peripheral surface 14a of the forming roller 14 is turned to the end surface Wb of the material W in the direction of the center axis L2 while rotating the cylindrical material W around the center axis of the material W by the turntable 10.
  • the material W can be expanded in a radial direction.
  • the forming roller 14 is arranged away from the rotation axis L1 of the turntable 10, the material of the material W flows toward the rotation axis L1 with respect to the forming roller 14, and the central portion of the material W is moved to the material W. It is possible to perform boss extraction molding for forming the boss portion Wc raised in the central axis direction.
  • diameter expansion molding and boss extrusion molding can be performed simultaneously. Therefore, a forged product having the boss Wc can be manufactured while reducing the cost.
  • the position of the outer end portion 14c on the outer circumferential surface 14a of the molding roller 14 in the direction of the center axis L2 of the molding roller 14 on the side opposite to the rotation axis L1 side of the rotary table 10 is the outer circumference of the material W after forging. It is outside in the radial direction of the material W rather than the position of the surface Wd.
  • the outer peripheral surface 14a of the forming roller 14 is pressed over a wide range at the end surface Wb of the material W in the central axis direction of the material W. Therefore, the accuracy of the end surface Wb of the material W after forging can be guaranteed by the outer peripheral surface 14a of the forming roller 14. Therefore, the accuracy of the end face Wb of the material W after forging can be improved.
  • the forging device 1 has a cylindrical mandrel 12, the center axis of the mandrel 12 coincides with the rotation axis L1 of the turntable 10, and the forming roller 14 is in the direction of the center axis L2 of the forming roller 14
  • the inner end surface 14b on the rotation axis L1 side of the mandrel 12 is preferably provided, and the distance ⁇ 1 between the central axis of the mandrel 12 and the inner end surface 14b is preferably larger than the radius of the mandrel 12 and smaller than the radius of the material.
  • the hollow cylindrical boss portion Wc can be formed at the central portion of the material W by causing the material of the material W to flow between the outer peripheral surface 12 a of the mandrel 12 and the inner end surface 14 b of the forming roller 14. it can. And since the material of the raw material W flows while adhering to the outer peripheral surface 12a of the mandrel 12, the desired accuracy can be secured on the inner peripheral surface of the boss portion Wc by managing the accuracy of the outer peripheral surface 12a of the mandrel 12. .
  • the forging device 1 can shorten the time for forging the material W by having two forming rollers 14. Further, the accuracy of the end face Wb of the material W is improved.
  • the center axis L2 of the forming roller 14 is substantially orthogonal to the rotation axis L1 of the turntable 10.
  • the mechanism for supporting the forming roller 14 can be simplified.
  • the two molding rollers 14 can be integrated with one shaft 20 while the central axes of the two molding rollers 14 are matched. Therefore, the mechanism for supporting the two forming rollers 14 can be simplified. Therefore, handling of the two forming rollers 14 becomes easy. Further, the force that can be applied to the material W by the forming roller 14 can be increased. Further, the rigidity of the forming roller 14 can be obtained.
  • the forging manufactured by the forging device 1 and the forging method of the present invention is suitable for power transmission parts.
  • steel parts used for power transmission such as gears and shafts used in automobiles, construction vehicles, construction machines, etc., and particularly suitable for automobile transmission gears and CVT sheaves.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
PCT/JP2013/082464 2013-01-30 2013-12-03 鍛造装置および鍛造方法 WO2014119120A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020157020584A KR20150103187A (ko) 2013-01-30 2013-12-03 단조 장치 및 단조 방법
EP13873655.8A EP2952273A4 (en) 2013-01-30 2013-12-03 FORGING DEVICE AND FORGING METHOD
CN201380071753.5A CN104968450A (zh) 2013-01-30 2013-12-03 锻造装置以及锻造方法
RU2015131210A RU2015131210A (ru) 2013-01-30 2013-12-03 Штамповочное устройство и способ штамповки
BR112015018258A BR112015018258A2 (pt) 2013-01-30 2013-12-03 dispositivo de forjamento e método de forjamento
US14/764,699 US20150352629A1 (en) 2013-01-30 2013-12-03 Forging device and forging method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-015916 2013-01-30
JP2013015916A JP2014144481A (ja) 2013-01-30 2013-01-30 鍛造装置および鍛造方法

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WO2014119120A1 true WO2014119120A1 (ja) 2014-08-07

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US (1) US20150352629A1 (ru)
EP (1) EP2952273A4 (ru)
JP (1) JP2014144481A (ru)
KR (1) KR20150103187A (ru)
CN (1) CN104968450A (ru)
BR (1) BR112015018258A2 (ru)
RU (1) RU2015131210A (ru)
WO (1) WO2014119120A1 (ru)

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CN106903255A (zh) * 2017-04-19 2017-06-30 中国航发北京航空材料研究院 一种回转体锻件的旋转滚动锻造装置
TR201809473A2 (tr) 2018-07-03 2018-07-23 Tusas Motor Sanayii Anonim Sirketi Bi̇r rotasyonel si̇metri̇k ve si̇metri̇k olmayan plasti̇k şeki̇llendi̇rme tezgahi

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CN104968450A (zh) 2015-10-07
EP2952273A4 (en) 2016-03-23
RU2015131210A (ru) 2017-03-03
BR112015018258A2 (pt) 2017-07-18
US20150352629A1 (en) 2015-12-10
JP2014144481A (ja) 2014-08-14
EP2952273A1 (en) 2015-12-09
KR20150103187A (ko) 2015-09-09

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