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WO1999047289A1 - Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne - Google Patents

Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne Download PDF

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Publication number
WO1999047289A1
WO1999047289A1 PCT/JP1998/001172 JP9801172W WO9947289A1 WO 1999047289 A1 WO1999047289 A1 WO 1999047289A1 JP 9801172 W JP9801172 W JP 9801172W WO 9947289 A1 WO9947289 A1 WO 9947289A1
Authority
WO
WIPO (PCT)
Prior art keywords
work
opening
sheet metal
cylindrical portion
opening edge
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.)
Ceased
Application number
PCT/JP1998/001172
Other languages
English (en)
Japanese (ja)
Inventor
Toshiaki Kanemitsu
Misao Oda
Kazuyuki Oda
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.)
Kanemitsu KK
Kanemitsu Corp
Original Assignee
Kanemitsu KK
Kanemitsu Corp
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 Kanemitsu KK, Kanemitsu Corp filed Critical Kanemitsu KK
Priority to DE19882358T priority Critical patent/DE19882358T1/de
Priority to PCT/JP1998/001172 priority patent/WO1999047289A1/fr
Publication of WO1999047289A1 publication Critical patent/WO1999047289A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/32—Making machine elements wheels; discs discs, e.g. disc wheels
    • 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
    • B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
    • 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

Definitions

  • the present invention relates to a method for manufacturing a sheet metal product having a cylindrical portion on an inner periphery.
  • Specific examples of the sheet metal product manufactured according to the present invention include Puri.
  • the tubular portion of the sheet metal product manufactured according to the present invention serves, for example, as a boss portion for attaching the sheet metal product to a shaft.
  • An object of the present invention is to provide a method for forming a tubular portion having no connection portion on the inner periphery of a sheet metal work, in other words, a method for manufacturing a sheet metal product having a tubular portion on the inner periphery. ing. Disclosure of the invention
  • a method for manufacturing a sheet metal product having a cylindrical portion on the inner periphery is a method for manufacturing a sheet metal product having an opening, and having an inward bifurcated annular protrusion at an opening edge thereof. While rotating the work in a fixed position around the axis of the opening, the inner die provided in the opening is moved outward in the radial direction of the work to move the inner die. The step of pressing the mold surface against the annular protruding piece and extending the annular protruding piece in a direction along the axis of the opening to form a cylindrical portion is performed.
  • the tubular portion can be formed on the inner periphery of the sheet metal product without using welding or burring.
  • a tube is provided on the inner periphery of the sheet metal work.
  • the above-mentioned welding and burring processes have been performed, and as in the present invention, a sheet metal work is rotated and arranged in an opening of the work while rotating the work. By moving the mold outward in the radial direction, the mold surface of the inner mold is pressed against the inward bifurcated annular protruding piece, and the annular protruding piece is stretched.
  • the method of forming a part has been proposed according to the present invention.
  • a method of moving an outer mold disposed outside the work with respect to the work is a usual means.
  • the inner peripheral portion has a cylindrical portion.
  • the method of manufacturing a sheet metal product is not in line with the technology disclosed in the above-mentioned Japanese Patent Publication No. 5-81339.
  • the inward bifurcated annular protruding piece can be formed by rubbing an opening edge of an opening provided in a plate portion of a sheet metal work at a middle portion in a thickness direction thereof. It is.
  • the inner mold for scraping provided in the opening is moved outward in the radial direction of the work.
  • a V-shaped rubbing surface provided in the inner mold is pressed against the middle in the thickness direction of the opening edge of the opening, and the opening edge is cracked.
  • another method of manufacturing a sheet metal product having a tubular portion on the inner periphery is to rotate a sheet metal work having an opening at a fixed position around the axis of the opening. Then, by moving the inner mold provided in the opening to the outside in the radial direction of the work, the mold surface of the inner mold is pressed against the opening edge of the work to open the work. O Rolling the cylindrical part to the edge.
  • the step of rolling the opening edge of the work into a cylindrical shape can be performed irrespective of the thickness of the sheet metal work.
  • the opening edge it is possible to form the cylindrical part by pressing the inner mold surface directly on the part.
  • the process of thickening the opening edge of the work is performed. After that, the above rolling may be performed.
  • the step of thickening the edge of the opening of the work includes rotating the work having the opening at a fixed position around the axis of the opening while increasing the thickness of the work provided in the opening.
  • the inner mold is moved radially outward of the work so that the molding surface for thickening the inner mold is pressed against the opening edge of the work. It is possible.
  • the process of increasing the thickness of the opening edge in this manner is disclosed in the above-mentioned Japanese Patent Publication No. 5-8133 9 for the same reason as described above. It's not about keeping pace with technology.
  • the sheet metal product manufactured by the present invention has a cylindrical portion protruding on both one side and the other side, but has a cylindrical portion protruding only on one side. It may be.
  • the step of rolling the cylindrical portion includes removing the meat of the opening edge of the work from the work. It is desirable that this is a process of forming a cylindrical shape on one side and the other side. According to this method, it is possible to perform the cylindrical portion protruding on one side and the other side in one process.
  • the thickening step is performed as described above.
  • the process be a process in which the meat at the edge of the opening of the work is bulged in one side and the other side of the work.
  • the step of rolling the cylindrical portion is a step of forming the meat at the opening edge of the work into a cylindrical shape on one side and the other side of the work. . According to these methods, it is possible to easily increase the protruding length from one side of the cylindrical portion and the protruding length from the other side.
  • the step of rolling the cylindrical portion involves removing the meat at the opening edge of the work on one surface of the work. It is desirable that this is a process in which only the side is raised in a cylindrical shape. Also, in the case of manufacturing a sheet metal product having a cylindrical portion protruding only on one side, when performing the above-described thickening step, the thickening step is performed by opening the work. Desirably, the process is to bulge the edge meat only on one side of the work.
  • FIG. 1 is a partially cutaway front view showing a preparation stage for a first embodiment of the manufacturing method according to the present invention.
  • FIG. 2 (a) is a partially broken front view in which the main part of FIG. 1 is enlarged
  • FIG. 2 (b) is a partially broken front view for explaining the scraping process
  • FIG. 7 is a partially broken front view showing another preparation stage.
  • FIG. 4 (a) is a partially broken front view in which the main part of FIG. 3 is enlarged
  • FIG. 4 (b) is a partially broken front view for explaining a tubular portion forming step.
  • FIG. 5 is a partially broken front view showing a preparation stage for a second embodiment of the manufacturing method according to the present invention.
  • Fig. 6 (a) is a partially cutaway front view in which the main part of Fig. 5 is enlarged
  • Fig. 6 (b) is a partially cutaway front view for explaining the preceding thickening step.
  • FIG. 7 is a partially broken front view showing another preparation stage for the second embodiment.
  • FIG. 8 (a) is a partially broken front view in which the main part of FIG. 7 is enlarged
  • FIG. 8 (b) is a partially broken front view for explaining the subsequent thickening step.
  • FIG. 9 is a partially cutaway front view showing still another preparation stage for the second embodiment.
  • Fig. 10 (a) is a partially cutaway front view in which the main parts of Fig. 9 are enlarged.
  • Figure (b) is a partially cutaway front view for explaining the cylindrical part rolling process.
  • FIG. 11 is a partially broken front view showing a preparation stage for a third embodiment of the manufacturing method according to the present invention.
  • Fig. 12 (a) is a partially broken front view in which the main parts of Fig. 11 are enlarged, and Fig. 12 (b) is a partially broken front view for explaining the thickening process.
  • FIG. 13 is a partially cutaway front view showing still another preparation stage for the first embodiment.
  • FIG. 14 (a) is a partially cutaway front view in which the main part of FIG. 13 is enlarged
  • FIG. 14 (b) is a partially cutaway front view for explaining the cylindrical portion rolling process.
  • the step of forming an inward bifurcated annular projecting piece 8 3 at the opening edge 8 2 of a flat circular sheet-metal work W having an opening 81 (an annular projecting piece forming step) Step) and a step of forming the inward bifurcated annular protruding piece 83 of the sheet metal work W having undergone this annular protruding piece forming step into a cylindrical shape (cylindrical portion forming step).
  • the work W made of sheet metal prepared in the annular projecting piece forming step may be formed as a flat plate portion W1 around the opening 81, and the overall shape of the work W is as shown in the figure. Even a flat thing, Alternatively, it may be in the form of a force.
  • This working device includes a work holding member 1 and a slide mechanism 3.
  • the work clamping member 1 has a rotary mounting table 12 around which the drive belt 11 is wound and a presser table 13 arranged opposite to the rotary mounting table 12.
  • the work W is held between the rotary mounting table 12 and the presser table 13 and held at a fixed position.
  • the arrow a indicates the pressing direction of the holding table 13.
  • the slide mechanism 3 includes a cam plate 31 and a movable base 32 that is horizontally slid by rotation of the cam plate 31, and is mounted on the movable base 32.
  • the inner mold 21 or the inner mold 25 is connected to the rotary drive shaft 33.
  • the rotational drive shaft 33 has a fixed position with respect to the movable base 32, and its rotation axis coincides with the axis of the inner die 21 or the inner die 25 mounted on the movable base 32. Therefore, when the rotational force is transmitted to the rotary drive shaft 33, the inner die 21 or the inner die 25 mounted on the movable base 32 together with the rotary drive shaft 33 rotates as indicated by the arrow R1.
  • the cam plate 31 is rotated, the inner die 21 or the inner die 25 mounted on the movable base 32 together with the movable base 32 slides and moves in the horizontal direction (arrow S).
  • rotating the inner die 21 or the inner die 25 mounted on the movable base 32 and moving the inner die 25 in the horizontal direction are performed simultaneously. Has become possible.
  • the mark W used in the annular projecting piece forming process shown in FIGS. 1 and 2 is circular, and has a circular opening 81 in a plate portion W1 at the center thereof. 2 is the target part. Then, when the rotary mounting table 12 of the work holding member 1 is driven to rotate, the work W is pressed against the rotary mounting table 12 by the presser table 13 and the opening 8 1 Rotate as shown by the arrow R 2 at a fixed position around the axis of.
  • the work W used in the tubular portion forming step shown in FIGS. 3 and 4 is a work that has undergone an annular projecting piece forming step, and has an opening edge 8 2 at its opening edge 8 2. 3 and its annular projection 83 is the target portion. Then, when the rotary mounting table 1 2 of the work holding member 1 is driven to rotate, the work W is pressed against the rotary mounting table 12 by the presser table 13, and the opening 8 1 of the opening 8 1 is closed. Rotate in a fixed position around the axis as indicated by arrow R2.
  • the inner die 21 used in the annular projecting piece forming step is a split inner die having a split surface 22 having a V-shaped cross section.
  • the work W is clamped by the work clamping member 1 and held in a fixed position, and the inner mold for friction 21 is mounted on the movable base 32. Opening of Work W 8 Deployed within 1.
  • Figure 2 (a) shows the positional relationship between the work W and the inner mold 21 for scraping in this preparation stage.
  • the work W is rotated at a fixed position around the axis of the opening 81 as indicated by an arrow R2, and at the same time, the inner mold 21 for scraping is rotated by an arrow R1.
  • the inner mold 21 for scraping is rotated by an arrow R1.
  • the rubbing surface 2 2 of the inner mold for rubbing 2 presses the opening edge 8 2 of the work W shown in FIG.
  • the rubbing surface 22 rubs the opening edge 81 at the middle portion in the thickness direction as shown in FIG. O
  • the inner mold 25 used in the tubular portion forming step has a concavely shaped mold surface 26 formed by a cylindrical surface.
  • the work W having undergone the above-described annular projection forming process is held by the work holding member 1 to be held at a fixed position, and the inner die 25 is movable. It is mounted on the platform 32 and placed in the opening 81 of the work W.
  • Figure 4 (a) shows the positional relationship between the work W and the inner mold 25 at this preparation stage.
  • the stroke W is rotated at a fixed position around the axis of the opening 81 as indicated by the arrow R2, and at the same time, the inner mold 25 is rotated by the arrow R1.
  • the mold surface 26 of the inner mold 25 presses the inward bifurcated annular projection 83 of the work W shown in FIG. 4A, and the annular projection 83 is formed. It is extended in a direction along the axis of the opening 81 to form a cylindrical portion 84. This produces the sheet metal product M ⁇
  • the sheet metal product M manufactured in this manner has a cylindrical portion 84 standing up on both one side and the other side.
  • the cylindrical portion 84 can be used, for example, as a boss portion through which a shaft passes.
  • the inner dies 21 and 25 When performing the above-described annular projecting piece forming step or tubular section forming step, when the inner dies 21 and 25 are pressed against the opening edge portion 82 of the work W or the annular projecting piece 83, they do not slip. It is desirable that it rotates in a state. For this purpose, the inner dies 21 and 25 should be rotated in synchronization with the work W. In this manner, the smoothness of the inner surface (surface) of the annular projection 83 and the cylindrical portion 84 is improved, and the inner surface of the cylindrical portion 84 is also used as a contact surface with the seal ring. become able to.
  • a second embodiment of the present invention will be described with reference to FIG. 5 to FIG.
  • the embodiment shown here is a two-step process (a thickening process in the first stage and a thickening process in the second stage) of thickening the opening edge 8 2 of the circular sheet metal work W having the opening 81.
  • the process of forming a cylindrical part on the inner periphery of the sheet metal work W that has undergone those thickening steps (the cylindrical part rolling) Manufacturing process).
  • the sheet metal workpiece W prepared in the thickening process only needs to be formed as a flat plate portion W1 around the opening 81, and the overall shape of the work W is as shown in the figure. It may be flat or cup-shaped.
  • Work used in the cylindrical part rolling process shown in Fig. 9 and Fig. 10 W is a work that has gone through each of the thickening processes of the former stage and the latter stage.
  • the opening edge portion 82 is sufficiently thickened, and the cross-sectional outline of such a sufficiently thickened portion is shown.
  • the circular opening edge 82 is the processing target portion.
  • Fig. 6 (a) shows the positional relationship between the work W and the inner mold 27a for thickening in the pre-stage at this preparation stage.
  • Reference numeral 27b denotes a rear thickening inner mold having a rear thickening molding surface 28b recessed into an arc-shaped cross section.
  • the work W is rotated in a fixed position around the axis of the opening 81 as shown by the arrow R2, and at the same time, the inner die 41 is moved by the arrow R1. With the force not rotated in this manner, the workpiece is slid in the horizontal direction as indicated by the arrow S in FIG. 10 (b) and moved outward in the radial direction of the work W.
  • the mold surface 42 of the inner mold 41 presses the sufficiently thick opening edge 82 of the work W shown in FIG.
  • the meat of the opening edge portion 82 rises in a cylindrical shape on one surface side and the other surface side of the work W, and the cylindrical portion 84 is formed by rolling. As a result, a sheet metal product M is manufactured.
  • the cylindrical portion 84 stands on both one side and the other side. Therefore, in such a sheet metal product M, the cylindrical portion 84 is, for example, a boss portion through which a shaft passes. Available.
  • the inner die 41 and the opening edge part 82 of the work W rotate without slipping.
  • the inner die 41 may be rotated in synchronization with the work W.
  • the smoothness of the inner surface (surface) of the cylindrical portion 84 is improved, and the inner surface of the cylindrical portion 84 can be used as a contact surface with the seal ring.
  • the thickening step is divided into a first thickening step and a second thickening step, so that the work W is seated at the time of thickening. It is hard to buckle.
  • the thickening step may be performed in a single step.
  • a third embodiment of the present invention will be described with reference to FIG. 11 to FIG.
  • the step of thickening the opening edge portion 82 of the circular sheet metal work W having the opening 81 thickening step
  • thickening step and the sheet metal working through the thickening step are described.
  • Forming a cylindrical portion on the inner periphery of the work W (a cylindrical portion rolling process).
  • the work W used in the thickening process shown in FIGS. 11 and 12 has a circular shape, and has an opening 81 in a plate portion W1 at a central portion thereof. 2 is the target part. So Then, when the rotary mounting table 1 2 of the work holding member 1 is driven to rotate, the opening 8 1 is maintained while the work W is pressed against the rotary mounting table 12 by the presser table 13. Rotate as shown by the arrow R 2 in a fixed position around the axis of the.
  • the work W made of sheet metal prepared in the thickening process only needs to be formed as a flat plate portion W1 around the opening 81, and the entire shape of the work W is as shown in the figure. It may be flat or cup-shaped.
  • the work W used in the cylinder rolling process shown in FIGS. 13 and 14 is a work that has undergone a thickening process, and its opening edge portion 82 is sufficiently thickened.
  • the opening edge portion 82 having a substantially circular cross-section and having a sufficiently large thickness is a portion to be processed. Then, when the rotary mounting table 1 2 of the work holding member 1 is driven to rotate, the mark W is pressed against the rotary mounting table 12 by the presser table 13, and the circumference of the axis of the opening 8 1 is maintained. Then rotate in the fixed position as indicated by arrow R2.
  • the inner mold 43 used in the thickening step is an inner mold having a concave-shaped thickened molding surface 44.
  • the work W is clamped by the work clamping member 1 and held in a fixed position, and the thickening inner mold 4 4 is moved by the movable base 3 2.
  • Work W Deployed in mouth 81.
  • Figure 12 (a) shows the positional relationship between the work W and the inner mold 43 for thickening in this preparation stage.
  • the work W is rotated in a fixed position around the axis of the opening 81 as indicated by an arrow R2, and at the same time, the inner mold 43 for thickening is indicated by an arrow. While rotating as R 1, slide in the horizontal direction as indicated by the arrow S in Fig. 12 (b) and move it outward in the radial direction of the work W. In this way, the thickened molding surface 44 of the thickening inner mold 43 presses the opening edge 82 of the work W shown in Fig. 12 (a). According to the pressing force, the meat of the opening edge portion 82 rises in a bulging shape on one surface side of the work W, and the opening edge portion 82 becomes thick.
  • the inner die 45 used in the cylindrical part rolling step has a concave die surface 46 formed by a cylindrical surface.
  • the work W that has undergone the above-described thickening process is held in place by being held by the work holding member 1 and the inner mold 45 is formed.
  • the positional relationship between the work W and the inner mold 41 in this preparation stage is shown in Fig. 14 (a), as shown in Fig. 14 (a).
  • the inner die 45 is rotated at a fixed position around the axis of the opening 81, and at the same time, the inner die 45 is rotated as shown by the arrow R1 while the inner die 45 is rotated as shown by the arrow S in FIG. 14 (b). And slide it to the outside in the radial direction of the work W.
  • the mold surface 46 of the inner mold 45 presses the sufficiently thick opening edge 82 of the work W shown in FIG.
  • the meat of the opening edge portion 82 rises in a cylindrical shape on one surface side of the work W, and the cylindrical portion 84 is formed by rolling. As a result, a sheet metal product M is manufactured.
  • the cylindrical portion 84 stands up only on one side thereof.
  • the cylindrical portion 84 can be used, for example, as a boss portion through which a shaft passes.
  • the step of increasing the thickness of the opening edge 82 of the work W is performed by expanding the thickness of the opening edge 82 of the work W to only one side of the work W. Since it is a process of building up in a protruding state, it is possible to easily obtain a sheet metal product M in which the cylindrical portion 84 is raised only on one surface side by performing the cylindrical portion rolling process. .
  • Industrial applicability As described above, according to the method for manufacturing a sheet metal product having a tubular portion on the inner periphery according to the present invention, a sheet metal product having a tubular portion on the inner periphery can be obtained without using welding-over ring processing. It can be manufactured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé destiné à la fabrication d'un produit métallique en plaque comportant une partie cylindrique à sa circonférence interne. Le procédé permet de former une partie cylindrique (84) à la circonférence interne d'une pièce métallique en plaque (W) sans soudure ni rabattage, d'éviter une opération de soudure susceptible de créer des problèmes et de détériorer l'environnement de travail, et d'accroître la longueur axiale de ladite partie cylindrique (84). Le procédé repose sur une technique qui consiste à laminer une partie cylindrique (84) sur la partie bord ouvert (82) d'une pièce métallique en plaque (W), présentant une ouverture (81), en pressant la surface (26) d'un moule interne (25) disposé dans ladite ouverture (81) contre la partie bord ouvert (82) et en déplaçant ledit moule (25) vers l'extérieur de la pièce (W) quand cette dernière tourne autour de l'axe de l'ouverture (81) et qu'elle est placée dans une position prédéterminée. Le procédé permet de former une partie cylindrique (84) à la circonférence interne de la pièce métallique en plaque (W) sans soudure ni rabattage.
PCT/JP1998/001172 1998-03-18 1998-03-18 Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne Ceased WO1999047289A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19882358T DE19882358T1 (de) 1998-03-18 1998-03-18 Verfahren zum Herstellen eines Blechteils mit einem zylindrischen Abschnitt an einem inneren Umfangsrand
PCT/JP1998/001172 WO1999047289A1 (fr) 1998-03-18 1998-03-18 Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/001172 WO1999047289A1 (fr) 1998-03-18 1998-03-18 Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne

Publications (1)

Publication Number Publication Date
WO1999047289A1 true WO1999047289A1 (fr) 1999-09-23

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PCT/JP1998/001172 Ceased WO1999047289A1 (fr) 1998-03-18 1998-03-18 Procede permettant de fabriquer un produit metallique en plaque comportant une partie cylindrique a sa circonference interne

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DE (1) DE19882358T1 (fr)
WO (1) WO1999047289A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003022485A1 (fr) * 2001-09-12 2003-03-20 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Dispositif pour la production d'une piece de transmission a symetrie de rotation presentant un moyeu

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0966330A (ja) * 1995-08-31 1997-03-11 Fuji Kiko Co Ltd 円板外周部の増肉方法及び外周に伝導部を有する円板部材の成形方法
JPH105912A (ja) * 1996-06-14 1998-01-13 Nissan Motor Co Ltd 裂開加工用ローラ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0966330A (ja) * 1995-08-31 1997-03-11 Fuji Kiko Co Ltd 円板外周部の増肉方法及び外周に伝導部を有する円板部材の成形方法
JPH105912A (ja) * 1996-06-14 1998-01-13 Nissan Motor Co Ltd 裂開加工用ローラ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003022485A1 (fr) * 2001-09-12 2003-03-20 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Dispositif pour la production d'une piece de transmission a symetrie de rotation presentant un moyeu

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Publication number Publication date
DE19882358T1 (de) 2000-05-31

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