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WO1999047291A1 - Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure - Google Patents

Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure Download PDF

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Publication number
WO1999047291A1
WO1999047291A1 PCT/JP1998/001173 JP9801173W WO9947291A1 WO 1999047291 A1 WO1999047291 A1 WO 1999047291A1 JP 9801173 W JP9801173 W JP 9801173W WO 9947291 A1 WO9947291 A1 WO 9947291A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
work
opening
sheet metal
peripheral end
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/JP1998/001173
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 PCT/JP1998/001173 priority Critical patent/WO1999047291A1/fr
Priority to DE19882388T priority patent/DE19882388T1/de
Publication of WO1999047291A1 publication Critical patent/WO1999047291A1/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
    • 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
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/32—Making machine elements wheels; discs discs, e.g. disc wheels

Definitions

  • the present invention relates to a method for manufacturing a sheet metal product having a groove on an inner peripheral end face.
  • Specific examples of the sheet metal product manufactured by the present invention include a disk-shaped part for forming a fluid chamber filled with a fluid used in a transmission of an automobile. .
  • An object of the present invention is to provide a method of manufacturing a sheet metal product having a groove on an inner peripheral end surface capable of improving the surface smoothness of a groove bottom surface and a groove wall surface without leaving room for fogging. Disclosure of the invention
  • a method for manufacturing a sheet metal product having a groove on an inner peripheral end face includes the steps of: rotating a sheet metal work having an opening at a fixed position around the axis of the opening; By moving the grooving inner die provided in the opening radially outward of the work, the grooving molding surface of the grooving inner die is moved to the inner peripheral surface of the opening. It presses against the end surface to form a groove on the inner peripheral end surface.
  • a groove can be provided on the inner peripheral end face of the sheet metal product without cutting.
  • the outer die for grooving is moved radially inward on the outer peripheral end face while rotating the circular sheet metal work, so that the outer die for grooving is grooved.
  • a method in which a molding surface is pressed against the outer peripheral end surface to form a groove therein is disclosed, for example, in Japanese Patent Publication No. 5-81339.
  • the groove is formed on the inner peripheral end face by adopting a method of moving the inner groove forming die radially outward in the opening of the rotating sheet metal work.
  • the method of manufacturing a sheet metal product having the above does not coincide with the method of forming grooves on the outer peripheral end surface disclosed in the above-mentioned Japanese Patent Publication No. 5-813339.
  • the manufacturing method according to the present invention can be carried out regardless of the thickness of the work made of sheet metal. That is, when the work is thick enough to form a groove as it is, a groove can be formed directly on the inner peripheral end face. On the other hand, when the work is too thin to form a groove until then, a thickening step for thickening the peripheral portion of the opening of the work is performed. Thus, the production method of the present invention can be performed.
  • the thickening step in this case may be performed prior to the above-described groove forming step (grooving step), or the thickening step may be performed simultaneously with the groove forming step.
  • the inner mold used in the thickening step is an inner mold for thickening having a molding surface for thickening
  • the inner mold used in the grooving step is provided with the molding surface for grooving described above. It is an inner mold for grooving.
  • the inner groove forming die is rotationally driven in synchronization with the work.
  • This method improves the surface smoothness of the inner surface of the groove formed by the grooved molding surface (for example, the groove bottom surface and the groove wall surfaces on both sides thereof).
  • the grooving inner die is rotated in synchronization with the above-mentioned work so that the grooving molding surface of the grooving inner die does not slip on the inner peripheral end surface of the work, the work is increased.
  • the inner surface of the groove formed by the groove forming surface is roughened by friction with the groove forming surface because the groove forming surface of the groove inner mold does not rub against the inner peripheral end surface of the groove. It is unlikely that the surface smoothness will be reduced.
  • the shape of the groove provided on the inner peripheral end face of the sheet metal product manufactured according to the present invention may be V-shaped, U-shaped, or square. Or an arc shape.
  • grooves having a groove bottom concentric with the axis of the work opening and groove walls on both sides of the groove bottom are formed in the opening of the obtained sheet metal product. It can be suitably used to hold a seal ring for liquid-tightly sealing a gap between the inserted shaft and the sheet metal product externally fitted to the shaft.
  • the arc-shaped groove holds a large number of balls that slidably connect the inner member provided at the opening and the outer member formed by the sheet metal product. When such a configuration is adopted, the inner member and the outer member are slidably connected without using a separate ball bearing. You. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a partially cutaway front view showing a preparation stage for an embodiment of the manufacturing method according to the present invention.
  • FIG. 2 is a partially broken front view showing a groove forming step in the embodiment of the manufacturing method according to the present invention.
  • FIG. 3 is a partial cross-sectional view showing a preliminary thickening step in the embodiment of the manufacturing method according to the present invention.
  • FIG. 4 is a partial cross-sectional view showing the thickening step in the embodiment of the manufacturing method according to the present invention.
  • FIG. 5 shows a preliminary groove for an embodiment of the manufacturing method according to the present invention. It is a fragmentary sectional view showing an attaching process.
  • FIG. 6 is a partial cross-sectional view showing the groove forming step in the embodiment of the manufacturing method according to the present invention.
  • FIG. 7 is an explanatory view showing the shape of the periphery of the opening in each step of the sheet metal work that has undergone the thickening step and the grooving step.
  • FIG. 8 is a partial cross-sectional view illustrating the shape of the groove.
  • FIG. 9 is a partial cross-sectional view illustrating a sheet metal product obtained by the manufacturing method of the present invention.
  • FIG. 10 is a partial cross-sectional view illustrating another sheet metal product obtained by the manufacturing method of the present invention.
  • a work holding member 1 is composed of a rotary mounting table 12 around which a drive belt 11 is wound and a presser table 13 disposed opposite to the rotary mounting table 12.
  • the work W made of sheet metal is held between the rotary mounting table 12 and the presser table 13 and held at a fixed position.
  • the work W as a starting material is circular, has a circular opening 81 in the center thereof, and the inner peripheral end surface 82 is formed by the peripheral surface of the opening 81.
  • the inner peripheral end surface 82 is a target portion for grooving. 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 1 2 by the presser table 1 3, and Rotate at a fixed position around the axis of the opening 81.
  • the grooved inner die 2 is a ring-shaped grooved surface 2
  • the inner mold 2 for grooving is a slide drive mechanism including a cam plate 31 and a movable base 32 that is slid horizontally by the rotation of the cam plate 31. 3 and is connected to the rotary drive shaft 33 as well as being mounted on the movable table 32.
  • the rotary drive shaft 33 has a fixed position with respect to the movable table 32 of the slide mechanism 3, and the rotation axis R of the slide drive shaft 33 corresponds to the grooved molding surface 2 of the grooved inner die 2.
  • the groove forming surface 21 bites into the inner peripheral end surface 82 corresponding to the pressing force at that time, and a groove is formed in the inner peripheral end surface 82.
  • FIG. 9 shows an example of a sheet metal product obtained through the grooving process.
  • a portion indicated by reference numeral 83 is a groove formed by passing through the above-mentioned groove forming step.
  • the groove 83 has a ring shape extending in the circumferential direction of the inner peripheral end face 82 of the opening 81.
  • the groove forming inner mold 2 may be rotated and driven in synchronization with the work W.
  • the peripheral speed of the groove forming surface 21 and the inner circumferential end face 8 2 of the work W are preferably set. It is preferable that the inner groove forming die 2 is rotated in synchronization with the work W so that the peripheral speed of the groove 2 becomes the same.
  • the groove 83 is formed so that the groove forming surface 21 and the inner peripheral end surface 82 of the work W do not slip, the inner surface (surface) of the groove 83 is formed.
  • the smoothness is improved. Therefore, when the seal ring is held in the groove 83, high adhesion is secured between the seal ring and the inner surface of the groove 83.
  • FIG. 3 is a two-dot chain line
  • FIG. 7 is a one-dot chain line.
  • the thickening process for increasing the thickness of the periphery of the opening 81 of the sheet metal work W as the starting material shown, and the grooving process according to the above are performed in this order. .
  • the thickening step is performed, for example, when the work W as a starting material is thin and it is difficult to form the groove 83 of the inner peripheral end face 82 until then. Therefore, by performing such a thickening process, it is possible to manufacture a sheet metal product having the groove 83 on the inner peripheral end face 82 even if the thin work W is used as a starting material.
  • the thickening process in the figure is divided into the preliminary thickening process shown in Fig. 3 and the actual thickening process shown in Fig. 4.
  • a circular work W indicated by a virtual line is clamped by the work clamping member 1A.
  • the work holding member 1A has a rotary mounting table 12A that is driven to rotate, and a presser table 13A that is provided to face the rotary mounting table 12A. Is held between the rotary mounting table 12 A and the presser table 13 A and held at a fixed position. Then, when the rotary mounting table 12 A is driven to rotate, the work W is pressed against the rotary mounting table 12 A by the presser table 13 A, and the circumference of the axial line of the opening 81 is maintained. In addition, it rotates in a fixed position.
  • the rotating mounting table 12A and the presser table 13A are provided with tapered surfaces 14 and 15 that extend inward.
  • This inner mold for preliminary thickening 4 A has a ring-shaped recessed pre-thickened molding surface 41 A, and is arranged in the opening 81 of the work W at the preparation stage.
  • the inner mold 4A for thickening the pre-thickness can be slid and moved in the lateral direction by the action of the slide drive mechanism 3 similar to that described with reference to FIGS. 1 and 2. In addition to this, it is possible to rotate around the axis of the pre-thickened molding surface 41A. In addition, it is possible to simultaneously rotate and move the inner mold 4A for preliminary thickening in the lateral direction.
  • the work W held by the work holding member 1A and the work holding member 1 are rotated at a fixed position around the axis of the opening 81 along with the work holding member 1, and the pre-thickening inner die 4 is rotated.
  • A is laterally slid as indicated by an arrow M1 and moved outward in the radial direction of the work W, the pre-thickened molding surface 41A is formed in the opening 81 of the work W. Press the periphery.
  • the peripheral portion of the opening 81 of the work W is pushed radially outward as shown in the figure, and accordingly, the peripheral portion of the opening 81 is formed into a pre-thickened molding surface.
  • the bulge bulges into a shape that fills the space between 41 A and the taper surfaces 14 and 15 described above, and the peripheral edge of the opening 81 is preliminarily thickened.
  • the inner peripheral end of the pre-thickened portion (pre-thick portion) 84 has a relatively long shape and protrudes inward.
  • Work W that has passed through the pre-thickening process is thickened in the thickening process shown in Fig. 4.
  • the work holding member 1B has the same structure as the work holding member 1A described in FIG.
  • the slope of the taper surfaces 16 and 17 is greater than the slope of the taper surfaces 14 and 15 described in Fig. 3.
  • the thickened inner mold 4B has the same structure as the preliminary thickened inner mold 4A described with reference to FIG. 3, but has a recessed actual thickness formed in a ring shape.
  • the concave depth of the thickening molding surface 41B is smaller than that of the preliminary thickening molding surface 41A described in FIG.
  • the work W is arranged in the opening.
  • This inner mold 4B for thickening can be slid and moved in the lateral direction by the action of the slide drive mechanism 3 similar to that described in FIGS. 1 and 2.
  • the slide drive mechanism 3 Similar to that described in FIGS. 1 and 2.
  • the work W held by the work holding member 1B and the work holding member 1 are rotated at a fixed position around the opening axis while the work holding member 1 is rotated.
  • the thickened molding surface 41B is the extra thick wall which is the periphery of the opening.
  • Department 8 4 see FIG. 3
  • the preliminary thickened portion 84 forms a space between the thickened molding surface 41 B and the taper surfaces 16 and 17 described above. It swells to fill the shape and the thickness is increased.
  • the cross-sectional shape of the thickened portion (the thickened portion) 85 is close to a regular polygon.
  • the thickening step is divided into the preliminary thickening step and the main thickening step as described above, there is an advantage that buckling at the peripheral portion of the opening 81 is less likely to occur.
  • each grooving process is basically the same as that described in Figs. 1 and 2. It is performed through the same procedure as the attaching process.
  • the work holding member 1C has a rotary mounting table 12C that is driven to rotate, and a presser table 13C that is provided to face the rotary mounting table 12C.
  • the rotary mounting table 12 C and the presser table 13 C are sandwiched and held at a fixed position. Then, when the rotary mounting table 12C is driven to rotate, the work W is pressed against the rotary mounting table 12C by the presser table 13C, and its opening (the thick wall as described in FIG. 4). (The opening surrounded by the part 85) rotates in a fixed position around the axis.
  • the rotating mounting table 12 C and the presser table 13 C have inwardly extending taper surfaces 18, 1 9 Is provided.
  • the pre-grooving inner mold 4 C is an inner mold for preliminary grooving.
  • the pre-grooving inner mold 4 C has a pre-grooving molding surface 41 C having a ring shape and a substantially semicircular cross section, and is provided in the opening of the work W in the preparation stage. Have been.
  • the inner groove 4C for preliminary grooving can be moved by sliding in the lateral direction by the action of the slide drive mechanism 3 similar to that described with reference to FIGS. 1 and 2.
  • the pre-grooving molding surface 41 C can be rotated around the axis. It is also possible to rotate the inner groove 4C for preliminary grooving and to move it in the lateral direction at the same time.
  • the work W held by the work holding member 1C as shown in FIG. 5 is opened together with the work holding member 1 (the opening surrounded by the thick portion 85 described in FIG. 4). ), While rotating it at a fixed position around the axis of ⁇ ⁇ , slide the inner groove 4C for pre-grooving in the lateral direction as indicated by the arrow M3 so that it moves radially outward of the work W.
  • the preformed groove forming surface 41C pushes the thick wall portion 85 (see Fig. 4), which is the inner peripheral end surface of the work W, radially outward.
  • the pre-grooving molding surface 41 C of the work W bites into the main thick portion 85, and the pre-groove 86 is formed in the main thick portion 85.
  • the work holding member 1D has the same structure as the work holding member 1C described in FIG. 5, but the rotary mounting table 12D and the presser base 13D have the same structure as that of FIG. Instead of the taper surfaces 18 and 19 described, groove forming surfaces 18D and 19D are provided. These groove forming surfaces 18D and 19D are useful for finishing the shape of the groove outer surface with high accuracy.
  • the inner groove forming die 4D has the same structure as the pre-thickened inner die 4A described in FIG.
  • the work W held by the work holding member 1D as shown in FIG. 6 and the work holding member 1 are fixed around the axis of the opening (the opening surrounded by the spare groove 86 described in FIG. 5). While rotating the inner groove 4D, slide it in the horizontal direction as indicated by arrow M4 and move it outward in the radial direction of the work W. Forming surface 4 ID presses the pre-grooved inner peripheral end face of work W, and thereby the actual groove is formed on the inner peripheral end face.
  • the groove 83 formed on the inner peripheral end surface of the sheet metal product S 2 manufactured through the above-described thickening step and groove forming step is concentric with the axis of the opening 81. And a groove bottom surface 8 3a on both sides of the groove bottom surface 8 3a.
  • the gap between the shaft (not shown) passed through the opening of the sheet metal product S2 and the sheet metal product S2 fitted to the shaft is liquid-tight.
  • the peripheral speed of the groove forming surface 41D and the inner circumference of the work W are required when performing the above-described groove forming step, particularly, when performing the main groove forming step. It is desirable to keep the peripheral speed of the end face the same so that they do not slip. By doing so, the smoothness of the inner surface (surface) of the groove 83 is improved, and when the seal ring is held, the gap between the seal ring and the inner surface of the groove 83 is increased. High adhesion is ensured.
  • FIG. 1 the peripheral speed of the groove forming surface 41D and the inner circumference of the work W are required when performing the above-described groove forming step, particularly, when performing the main groove forming step. It is desirable to keep the peripheral speed of the end face the same so that they do not slip. By doing so, the smoothness of the inner surface (surface) of the groove 83 is improved, and when the seal ring is held, the gap between the seal ring and the inner surface of the groove 83 is increased. High adhesion is ensured.
  • the work W made of sheet metal as a starting material is represented by a one-point line
  • the work W which has been preliminarily thickened is represented by a two-dot chain line
  • the thickened work W is shown.
  • W is represented by a dashed line
  • the pre-grooved work W is represented by a three-dot chain line.
  • FIG. 8 shows a sheet metal product S3 in which the peripheral portion of the opening of the work is made uneven in the thickness increasing step and a groove 83 is formed therein.
  • Ma Fig. 10 shows a sheet metal product S4 in which the peripheral portion of the opening of the work was made uneven in the thickening process to form a groove 83 and a groove 86 on the outer peripheral surface. Is shown. The groove 86 on the outer peripheral surface is not formed by the method of the present invention.
  • a sheet metal product having a groove on the inner peripheral end face can be manufactured without using cutting. It becomes. Furthermore, since the groove bottom surface and the groove wall surface have high surface smoothness, the sheet metal product manufactured according to the present invention uses the groove on the inner peripheral end surface as a holding groove for the seal ring or holds the ball. It can be used as a groove.

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

Abstract

L'invention concerne un procédé de fabrication d'un produit en tôle, présentant une rainure dans sa surface terminale circonférentielle intérieure. Ledit procédé permet de former une rainure dans une surface terminale circonférentielle intérieure d'une pièce en tôle, sans qu'il soit nécessaire de recourir à un procédé de coupage. Il permet en outre de supprimer la phase d'enlèvement des copeaux se trouvant dans ladite rainure, d'éliminer le risque que ces derniers détériorent le milieu de travail et d'améliorer le lissé des surfaces inférieures et supérieures de ladite rainure. Ledit procédé consiste principalement à former une rainure dans une surface terminale circonférentielle intérieure d'un produit en tôle présentant une ouverture, par le déplacement d'un moule à rainurer interne, prévu dans l'ouverture, dans le sens extérieur diamétralement opposé de la pièce et, à comprimer ainsi une surface de rainurage du moule interne contre ladite surface terminal circonférentielle intérieure, c'est-à-dire la surface circonférentielle de l'ouverture, à mesure que la pièce est tournée, de sorte qu'elle soit mise dans une position prédéterminée autour de l'axe de l'ouverture. Selon ledit procédé, une rainure peut être formée dans une surface terminale circonférentielle d'un produit en tôle sans qu'il soit nécessaire de recourir à un procédé de coupage.
PCT/JP1998/001173 1998-03-18 1998-03-18 Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure Ceased WO1999047291A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP1998/001173 WO1999047291A1 (fr) 1998-03-18 1998-03-18 Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure
DE19882388T DE19882388T1 (de) 1998-03-18 1998-03-18 Verfahren zum Herstellen eines Blechteils mit einer Nut an einer inneren Endoberfläche hiervon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/001173 WO1999047291A1 (fr) 1998-03-18 1998-03-18 Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure

Publications (1)

Publication Number Publication Date
WO1999047291A1 true WO1999047291A1 (fr) 1999-09-23

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Application Number Title Priority Date Filing Date
PCT/JP1998/001173 Ceased WO1999047291A1 (fr) 1998-03-18 1998-03-18 Procede de fabrication d'un produit en tole presentant une rainure dans sa surface terminale circonferentielle interieure

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DE (1) DE19882388T1 (fr)
WO (1) WO1999047291A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208324A (en) * 1981-06-17 1982-12-21 Nissan Motor Co Ltd Additional processing of coupling sleeve in synchromesh mechanism and its device
JPS6372441A (ja) * 1986-09-12 1988-04-02 Hamana Buhin Kogyo Kk 円盤状ピストンの製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208324A (en) * 1981-06-17 1982-12-21 Nissan Motor Co Ltd Additional processing of coupling sleeve in synchromesh mechanism and its device
JPS6372441A (ja) * 1986-09-12 1988-04-02 Hamana Buhin Kogyo Kk 円盤状ピストンの製造方法

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Publication number Publication date
DE19882388T1 (de) 2000-05-31

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