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WO1998009749A1 - Procede de fabrication d'un arbre a partir de plaques metalliques - Google Patents

Procede de fabrication d'un arbre a partir de plaques metalliques Download PDF

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Publication number
WO1998009749A1
WO1998009749A1 PCT/JP1996/002536 JP9602536W WO9809749A1 WO 1998009749 A1 WO1998009749 A1 WO 1998009749A1 JP 9602536 W JP9602536 W JP 9602536W WO 9809749 A1 WO9809749 A1 WO 9809749A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal plate
shaft
punch
die
forming
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/JP1996/002536
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuhiro Iseri
Kazuaki Hayashizaki
Yutaka Hino
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority to JP03834495A priority Critical patent/JP3475551B2/ja
Priority claimed from JP03834495A external-priority patent/JP3475551B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to EP96929544A priority patent/EP0937522A4/fr
Priority to PCT/JP1996/002536 priority patent/WO1998009749A1/fr
Priority to US09/147,557 priority patent/US6006579A/en
Publication of WO1998009749A1 publication Critical patent/WO1998009749A1/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
    • B21K23/00—Making other articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/20—Making uncoated products by backward extrusion
    • 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
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/04—Stamping using rigid devices or tools for dimpling
    • 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
    • B21K1/06—Making machine elements axles or shafts
    • 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
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/12—Making machine elements axles or shafts of specially-shaped 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
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/02—Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded

Definitions

  • the present invention relates to a method for forming a shaft from a metal plate rather than a metal plate.
  • FIG. 17 is a diagram showing a conventional method of forming a shaft on a metal plate by caulking and fixing. A hole is machined in the metal plate 10 on which the shaft 11 is to be installed, and the Yukiyoshi 11 machined in another process is fixed by caulking.
  • Fig. 18 shows a conventional method of forming a shaft on a metal plate by spot welding. The shaft 13 processed in another process is spot-welded to the metal plate 12 on which the shaft 13 is to be installed.
  • Japanese Patent Publication No. 6-267673 discloses that a plate 21 is pressed from one side by a first tool 22 to form a hole on one side and a projecting part on the other side, as shown in FIG. After forming 24, the lower surface 23a of the second tool 23 is brought into contact with the hole side, and by pressing, the amount of oil in the pressed portion is moved to the projecting portion to further project the projecting portion 24.
  • a forming method is described in which the first tool 24 is protruded, and the first tool 24 is pressed again to add height to the protruding portion 24 to form a cross portion.
  • a front extrusion method shown in FIG. 20 and a rear extrusion method shown in FIG. 21 are known.
  • the conventional method of forming a shaft by crimping or spot welding as described above increases the cost because the shaft is processed in a separate process and then fixed to a metal plate. Also, when caulking is fixed, it is difficult to deform the metal plate due to the caulking pressure, and it is difficult to obtain the perpendicularity between the metal plate and the shaft.In spot welding, the welding area is small, so sufficient strength can be obtained. There was no problem.
  • the pellet material is processed to form a deformed material by processing the pellet material. Absent.
  • the present invention solves the above-mentioned conventional problems, and includes a first step of half-punching a metal plate by pressing or extruding forward, and a metal plate obtained by the first step and held by a die. A second step of pushing a punch into the projecting portion of the metal plate and pushing the projecting portion backward in a direction opposite to the pushing of the punch, thereby extending the projecting portion in an axial shape. It is a forming method.
  • the present invention is characterized in that a plurality of shafts having the same height are collectively formed.
  • the present invention provides that, in the second step, the progressive processing is performed such that the direction in which the protruding portion is elongated to form the shaft and the direction in which the metal plate is punched in the other step are opposite to each other. It is a feature.
  • the metal plate is extruded forward by press working to form a protruding part, and then this protruding part is extruded rearward by a punch and die to form a shaft. Further, it is possible to form a shaft having a sufficient perpendicularity or the like at an arbitrary position on the metal plate from the metal plate integrally and with a small number of steps.
  • a plurality of shafts of the same height can be extended by the backward extrusion process in the second step, and when the metal plate rises from the die surface, However, it is possible to prevent variations in the amount of lifting and tilting of the metal plate.
  • the direction in which the shaft is extended and the direction in which the metal plate is punched in the other steps are opposite to each other, so that the rearward extrusion of the metal plate in the progressive processing is performed. At this time, there is no gap between the die surface and the metal plate, and punching in other processes becomes difficult.
  • FIG. 1 is a view showing a state before a first step in a method for forming a shaft from a metal plate according to one embodiment of the present invention.
  • FIG. 2 is a view showing a state in which a projection is formed in the first step.
  • FIG. 3 is a view showing a relationship between a punch, a die, and a metal plate in the second step.
  • FIG. 4 is a view showing a state after completion of the second step.
  • FIG. 5 (a) is a diagram showing the volume of the protrusion.
  • (b) is a diagram showing the volume of the shaft.
  • FIG. 6 is a diagram showing the relationship between the punch-in amount and the escape rate of the SPCC material.
  • FIG. 7 is a diagram showing the relationship between the punch-in amount and the escape ratio of the high-tensile steel material.
  • FIG. 4 is a diagram showing the relationship between the outer diameter of the protrusion of the metal plate and the inner diameter of the die.
  • FIG. 9 is a diagram showing the relationship between the height of the projecting portion of the metal plate and the depth of the die.
  • FIG. 10 is a diagram showing a dimensional relationship between a punch and a die in a first step.
  • FIG. 11 is a diagram showing a relationship between a punch press-in amount and a protrusion height in a first step.
  • FIG. 12 is a diagram showing a dimensional relationship between a punch and a die in the second step.
  • FIG. 13 is a diagram showing the amount of pushing of the punch in the second step.
  • FIG. 14 is a diagram showing the dimensions of the shaft after the completion of machining.
  • FIG. 15 (a) is an explanatory diagram in the case where the direction of elongation of the shaft in progressive feeding is the same as the punching direction of another process.
  • (b) is an explanatory view in the case where the direction of elongation of the shaft in progressive feeding and the punching direction of another process are opposite.
  • FIG. 16 is a diagram showing a processing state of a stepped shaft.
  • FIG. 17 is a diagram showing a conventional method of installing a shaft by caulking.
  • FIG. 18 is a diagram showing a conventional method of installing a shaft by spot welding.
  • FIG. 19 is a view showing a conventional shaft forming method according to a known example.
  • FIG. 20 is an explanatory diagram of front extrusion.
  • FIG. 21 is an explanatory view of the rear extrusion process.
  • Fig. 1 is a metal plate whose shaft is to be protruded
  • 2 is a case where a metal plate 1 is half-punched or a front extrusion is performed to move the material in the same direction as the moving direction of the punch 2 by pressing.
  • Die used when punching half-punch or forward extrusion of metal plate 1 together with punch 2 by press, and 4 shown in Fig. 2 is protrusion of metal plate 1 obtained by half-punching or front extrusion 3 is a punch used to extrude the material of the protruding portion 4 backward, 6 is a die used together with the punch 5 to extrude the protruding portion 4 rearward, and 7 shown in FIG.
  • This is a shaft that has been extruded and integrated with the metal plate 1.
  • a material having a volume necessary for forming the shaft 7 is half-punched or extruded forward by a press using the punch 2.
  • the projecting portion 4 of the metal plate 1 half-punched or extruded forward is compressed by a punch 5 and a die 6, and extruded rearward to process a shaft 7.
  • the material of the protruding portion 4 is replaced by the shaft 7 and extends in the moving direction of the shaft 7 force punch 5, so that the metal plate 1 rises above the upper surface of the die 6 as shown in FIG.
  • the die diameter is 2 You.
  • Fig. 6 shows that the larger the punch diameter, the greater the amount of material escape.
  • the number of punches becomes 4, it can be seen that about half of the material pushed in has escaped to the surroundings. Also, when looking at the same punch diameter, the larger the amount pushed in, the less material escapes.
  • the punch diameter and the amount of indentation required for pin forming are determined.
  • the protrusion 7 of the material obtained by the front extrusion is fitted into the die 6, and the shaft 7 is formed by rear extrusion in which the material is crushed by the punch 5.
  • the diameter of the die 6 since the diameter of the die 6 must be the same as the diameter of the shaft 7, the diameter A of the material protrusion 4 is set as shown in FIG. 8 so that the material protrusion 4 easily fits into the die 6. It is better to make it smaller than the diameter B of the die 6.
  • the diameter of the protruding part was smaller by 0.011 in diameter than the die diameter of the rear extrusion.
  • this setting is not suitable for the progressive type, because it requires power to enter the die.
  • the die diameter of the front extrusion should be smaller than the diameter of the boss by 0.01 or more, up to about 0.1 mm, and optimally smaller by 0.05 mm. It is important to set.
  • the protrusion 4 of the metal plate 1 is fitted into the die 6, if there is a gap between the upper surface of the die 6 and the metal plate, a step is formed at the root of the shaft, and as shown in FIG.
  • the depth should be 0.05 to 0.1 mm deeper than the height of the protruding part of the material.
  • the push-in amount h 5 of the punch 5 as shown in the first 3 FIG 1. is a 6 5 Jour.
  • the thickness t is 1.2 noodles
  • the diameter d 7 is ⁇ 1 983 ⁇ 1.992I I
  • the height and diameter variation are 0.07I I and 0.01 respectively
  • the tip of the shaft is 0.000 ⁇ 0.05.
  • the points for raising the height of the shaft are front extrusion, which is to protrude a lot of material and to reduce the thickness of the side wall of the pin. The result of confirming the height limit is shown below.
  • the material jumps up at the time of the backward extrusion, but this differs depending on the height of the shaft and the amount of the jump. Therefore, in the same process of rear extrusion, only the same shaft height can be formed. In this process, other processing (punching, bending, etc.) cannot be performed, and it is better that there is no pilot that obstructs the material from jumping. Furthermore, when the backward extrusion process is performed in a progressive type, the direction of the shaft is restricted. When molding the downward shaft 30 as shown in Fig. 15 (a), the material 31 jumps up, creating a gap between the die surface 32 and the material 31. During processing, the material 31 will bend. Conversely, when forming the shaft 34 upward, as shown in Fig. 15 (b), the material 31 is pushed downward, so that there is no gap between the die surface 32 and the material 31; In the process 35, the punching process becomes difficult.
  • a metal plate is subjected to forward extrusion by press working to form a protruding portion, and then the protruding portion is rearward extruded by a punch and a die to form a shaft.
  • An excellent effect is achieved in that an axis with sufficient outer diameter accuracy, perpendicularity, etc. can be formed at an arbitrary position on the metal plate from the metal plate integrally and with a small number of steps. .
  • a plurality of shafts of the same height can be extended by the rear extrusion process in the second step, so that the metal plate can be lifted from the die surface.
  • the direction in which the shaft is extended and the direction in which the metal plate is punched in the other steps are opposite to each other, so that the rearward extrusion of the metal plate in the progressive processing is performed. At this time, there is no gap between the die surface and the metal plate, and punching in other processes becomes difficult.

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

Abstract

L'invention porte sur un procédé d'usinage à partir d'une partie quelconque d'une plaque métallique d'un arbre dont l'axe est perpendiculaire à ladite plaque. Le procédé comprend une première étape consistant à extruder la plaque (1) dans un sens à la presse et une deuxième étape consistant à soumettre la protubérance formée pendant la première étape à une extrusion en sens opposé à l'aide d'un poinçon inséré à force qui en provoque l'allongement en longueur. On obtient ainsi un arbre suffisamment long avec une grande précision.
PCT/JP1996/002536 1995-02-27 1996-09-06 Procede de fabrication d'un arbre a partir de plaques metalliques Ceased WO1998009749A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP03834495A JP3475551B2 (ja) 1995-02-27 1995-02-27 金属板からの軸形成方法
EP96929544A EP0937522A4 (fr) 1996-09-06 1996-09-06 Procede de fabrication d'un arbre a partir de plaques metalliques
PCT/JP1996/002536 WO1998009749A1 (fr) 1995-02-27 1996-09-06 Procede de fabrication d'un arbre a partir de plaques metalliques
US09/147,557 US6006579A (en) 1995-02-27 1996-09-06 Method of fabricating shaft from metal plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP03834495A JP3475551B2 (ja) 1995-02-27 1995-02-27 金属板からの軸形成方法
PCT/JP1996/002536 WO1998009749A1 (fr) 1995-02-27 1996-09-06 Procede de fabrication d'un arbre a partir de plaques metalliques

Publications (1)

Publication Number Publication Date
WO1998009749A1 true WO1998009749A1 (fr) 1998-03-12

Family

ID=14153773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1996/002536 Ceased WO1998009749A1 (fr) 1995-02-27 1996-09-06 Procede de fabrication d'un arbre a partir de plaques metalliques

Country Status (2)

Country Link
EP (1) EP0937522A4 (fr)
WO (1) WO1998009749A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970137A4 (fr) * 2006-01-05 2012-12-19 Nisshin Steel Co Ltd Procede de formation de grain pour base de boucle
CN108555123A (zh) * 2018-05-07 2018-09-21 江苏太平洋齿轮传动有限公司 一种高精度深孔挤压模具结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105904163A (zh) * 2016-06-01 2016-08-31 江苏创汽车零部件有限公司 一种输入支架爪形件的冷锻成形工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117674A (fr) * 1974-02-28 1975-09-13
JPS5722841A (en) * 1980-07-16 1982-02-05 Nakamura Seisakusho:Kk Formation of plural pieces of stud bolt
JPS5987946A (ja) * 1982-11-10 1984-05-21 Aida Eng Ltd 薄肉で構成された突起を有する部品の製造方法およびその装置
JPH04127930A (ja) * 1990-09-19 1992-04-28 Aida Eng Ltd 傘歯車の塑性加工方法およびその装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452495A1 (de) * 1962-05-28 1969-03-27 Louis Vetter Tuben Und Metallk Verfahren und Vorrichtung zum Herstellen eines einseitig offenen Behaelters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117674A (fr) * 1974-02-28 1975-09-13
JPS5722841A (en) * 1980-07-16 1982-02-05 Nakamura Seisakusho:Kk Formation of plural pieces of stud bolt
JPS5987946A (ja) * 1982-11-10 1984-05-21 Aida Eng Ltd 薄肉で構成された突起を有する部品の製造方法およびその装置
JPH04127930A (ja) * 1990-09-19 1992-04-28 Aida Eng Ltd 傘歯車の塑性加工方法およびその装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0937522A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970137A4 (fr) * 2006-01-05 2012-12-19 Nisshin Steel Co Ltd Procede de formation de grain pour base de boucle
CN108555123A (zh) * 2018-05-07 2018-09-21 江苏太平洋齿轮传动有限公司 一种高精度深孔挤压模具结构

Also Published As

Publication number Publication date
EP0937522A1 (fr) 1999-08-25
EP0937522A4 (fr) 2001-10-24

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