WO2004020824A1 - Method of producing bearings - Google Patents

Method of producing bearings Download PDF

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Publication number
WO2004020824A1
WO2004020824A1 PCT/JP2003/010786 JP0310786W WO2004020824A1 WO 2004020824 A1 WO2004020824 A1 WO 2004020824A1 JP 0310786 W JP0310786 W JP 0310786W WO 2004020824 A1 WO2004020824 A1 WO 2004020824A1
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WO
WIPO (PCT)
Prior art keywords
bottomed hole
bearing body
hemispherical
manufacturing
diameter
Prior art date
Application number
PCT/JP2003/010786
Other languages
French (fr)
Japanese (ja)
Inventor
Seiichi Nakayama
Atsushi Aoyama
Original Assignee
Taiho Kogyo Co., Ltd.
Chubu Tepro 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
Application filed by Taiho Kogyo Co., Ltd., Chubu Tepro Co., Ltd. filed Critical Taiho Kogyo Co., Ltd.
Publication of WO2004020824A1 publication Critical patent/WO2004020824A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—Pistons
    • F04B27/0886—Piston shoes
    • 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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • 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
    • B21K21/08—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
    • B21K21/10—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs cone-shaped or bell-shaped articles, e.g. insulator caps

Definitions

  • the present invention relates to a method for manufacturing a bearing, and more particularly, to a method for manufacturing a bearing suitable for use in, for example, a swash plate type compressor.
  • a hemispherical shoe used for a swash plate type compressor is known.
  • the conventional hemispherical shoe is manufactured as follows. That is, first, a columnar iron as a material is cut into required dimensions and used as a material. Next, the material is preformed into a roughly spherical shape by forging, and finally the material is forged into a hemispherical shape.
  • the conventional hemispherical shoe described above has a disadvantage that the weight is heavy for a small volume because the inside is solid.
  • a reduction in the weight of the above-described conventional hemispherical shoe has been desired.
  • a hemispherical shoe having a hollow interior has been proposed (for example, Japanese Patent Application Laid-Open No. 2002-31051).
  • the hemispherical show proposed in this publication is light in weight, but is manufactured by connecting two members, so that the manufacturing cost of the hemispherical show increases, and the drawback of low strength and durability is high. there were.
  • an object of the present invention is to provide a bearing that is lightweight and has good durability. That is, the present invention provides a round bar-shaped material having a required size, wherein a bottomed hole is formed at one end face in the axial direction, and then the material is preformed so that the outer peripheral portion on the bottomed hole side is reduced in diameter. Then, the material is finish-molded to produce a hemispherical bearing having a hollow portion, a flat end surface at one axial end, and a hemispherical surface at the other axial end. It is intended to be.
  • the inside of the bearing body manufactured by the manufacturing method of the present invention is hollow, a lighter bearing body can be provided as compared with a conventional show in which the inside is solid. Moreover, since the bearing body is manufactured by molding a single material, a bearing body with good durability can be provided.
  • FIG. 1 is a diagram showing a manufacturing process of a first embodiment of the present invention
  • FIG. 2 is a view showing a manufacturing process of the second embodiment of the present invention.
  • reference numeral 1 denotes a material for manufacturing a hemispherical bearing body.
  • a columnar iron-based material is cut into a predetermined dimension L in the axial direction to obtain the material 1.
  • the axial dimension of the material 1 is about 1.5 times the diameter D.
  • Both end surfaces 1 A and IB of the material 1 in the axial direction are flat surfaces orthogonal to the axis.
  • a circular first bottomed hole 1C having a predetermined depth is formed in the center of one end face 1B of the material 1 by cutting.
  • the depth of the first bottomed hole 1C is set to about 1/4 of the axial dimension L, and the inner diameter of the first bottomed hole 1C is set to about 80% of the outer diameter D. ing.
  • a circular second bottomed hole 1 is formed at a predetermined depth continuously from the first bottomed hole 1C. D is formed by cutting.
  • the inner diameter of the second bottomed hole 1D is about half the diameter D of the material 1, and the depth of the second bottomed hole 1D is about twice that of the first bottomed hole 1C. Dimensions are set.
  • a conical recess 1E having a shallow depth is formed in the center of the other end face 1A of the material 1 by cutting.
  • the material 1 in this state is preformed by a forging device (not shown).
  • a forging device not shown.
  • the outer peripheral portion 1F on the outer side of the first bottomed hole 1C is formed into a conical shape in which the opening side of the first bottomed hole 1C is narrowed.
  • the material 1 preformed as described above is finish-molded into a hemispherical shape by a forging device (not shown) to form a hemispherical bearing body 1 ′.
  • Manufacturing is completed.
  • the concave portion 1E is formed into a trapezoidal shape from a conical cross section, and the end surface 1A is further expanded radially outward, so that the concave portion 1E is formed with a sliding surface.
  • a flat end face 5 is formed.
  • the conical outer peripheral portion 1F and the outer peripheral portion of the material 1 continuous therefrom are formed into a hemispherical surface 6 having a smooth surface.
  • a hemispherical hollow portion 7 is formed inside.
  • the thickness of the portion forming the end face 5 and the thickness of the portion forming the hemisphere 6 are substantially the same. Further, a small-diameter through-hole 8 formed by reducing the diameter of the first bottomed hole 1C is formed at the top of the hemisphere 6, and the inside of the inside is formed through the through-hole 8.
  • the hollow part 7 communicates with the outside of the bearing body 1 ′.
  • the inside of the hemispherical bearing body 1 ′ manufactured by the manufacturing method of the present embodiment is hollow, it is compared with a conventional hemispherical shell having a solid inside.
  • a lightweight bearing 1 ' can be provided.
  • the bearing 1 ′ is a single Since the material is manufactured by molding, a bearing body with low manufacturing cost and excellent durability can be provided.
  • the hemispherical bearing body 1 'manufactured according to the present embodiment is suitable for use in a swash plate type compressor.
  • FIGS. 2 (a) to 2 (e) show a second embodiment of the present invention. The formation process is omitted.
  • a circular first bottomed hole 1C is formed at a predetermined depth in the center of one end surface 1B of the material 1 by cutting (FIGS. 2 (a) and 2 (b)). .
  • a second bottomed hole 1D is formed by cutting at a predetermined depth continuously from the first bottomed hole 1C (see FIG. c)).
  • the material 1 in this state is preformed by a forging device (not shown).
  • the outer peripheral portion 1F on the outer side of the first bottomed hole 1C is formed into a conical shape in which the opening side of the first bottomed hole 1C is narrowed (FIG. 2 (d)).
  • the preformed material 1 is finish-molded by a forging device (not shown) so as to have a hemispherical shape as a whole.
  • a hemispherical bearing body 1 ′ having the hollow portion 7 is manufactured as in the first embodiment.
  • the concave portion 1E is omitted, the entire area of the end face 5 is flat.
  • Other configurations of the bearing body 1 ′ after the completion of the finish forming are the same as those of the first embodiment. According to the second embodiment, the same operation and effect as those of the first embodiment can be obtained.
  • the effect of being able to provide a bearing body that is lightweight and has excellent durability is obtained.

Abstract

A method of producing bearings, comprising the steps of: first, cutting a cylindrical material into axial predetermined lengths, which are blanks (1), then, forming one end surface of the blank (1) with a first bottomed hole (1C) and a second bottomed hole (1D) continuing therefrom, thereafter, pre-forming the blank (1) to conically shape the outer periphery (1F) on the first bottomed hole (1C) side, finish-forming the thus shaped blank (1) into a semispherical shape as a whole, thereby producing an internally hollowed semispherical bearing (1’). According to such production method, a semispherical bearing (1’) that is light in weight and superior in durability can be provided.

Description

軸受体の製造方法 Manufacturing method of bearing body
技術分野 Technical field
本発明は軸受体の製造方法に関し、 より詳しくは、 例えば斜板式コンプレッ サに用いて好適な軸受体の製造方法に関する。  The present invention relates to a method for manufacturing a bearing, and more particularly, to a method for manufacturing a bearing suitable for use in, for example, a swash plate type compressor.
明 田  Akita
背景技術 Background art
従来、 斜板式コンプレッサに用いられる半球状シユーは知られている。 そし て、 従来の半球状シユーは次のようにして製造されている。 すなわち、 先ず材 料となる円柱状の鉄を所要寸法に切断してそれを素材とする。 次にその素材を 概略球状に鍛造で予成形した後、 最後に半球状となるように鍛造で仕上げ成形 するようにしている。  Conventionally, a hemispherical shoe used for a swash plate type compressor is known. Then, the conventional hemispherical shoe is manufactured as follows. That is, first, a columnar iron as a material is cut into required dimensions and used as a material. Next, the material is preformed into a roughly spherical shape by forging, and finally the material is forged into a hemispherical shape.
ところで、 上述した従来の半球状シユーは、 その内部が中実となっているた め、 体積が小さい割りには重量が重くなるという欠点があった。 そして、 近年、 車両に搭載する各部品の軽量化が要望されていることから、 上記従来の半球状 シュ一についても軽量化が望まれていたものである。 なお、従来、 内部を中空として軽量化した半球状シユーが提案されている （例 えば、 特開 2 0 0 2— 3 1 0 5 1号公報）。 しかしながら、 この公報で提案され ている半球状シユーは、 重量が軽い反面、 2部材を連結して製造しているため、 半球状シユーの製造コストが高くなり、 力つ耐久性が悪いという欠点があった。  By the way, the conventional hemispherical shoe described above has a disadvantage that the weight is heavy for a small volume because the inside is solid. In recent years, there has been a demand for weight reduction of each component to be mounted on a vehicle, and therefore, a reduction in the weight of the above-described conventional hemispherical shoe has been desired. Heretofore, a hemispherical shoe having a hollow interior has been proposed (for example, Japanese Patent Application Laid-Open No. 2002-31051). However, the hemispherical show proposed in this publication is light in weight, but is manufactured by connecting two members, so that the manufacturing cost of the hemispherical show increases, and the drawback of low strength and durability is high. there were.
発明の開示 Disclosure of the invention
そこで、 本発明の目的は、 軽量であって、 しかも耐久性が良い軸受体を提供 することである。 すなわち、 本発明は、 所要寸法の丸棒状の素材における軸方向の一方の端面 に有底孔を形成し、 次に上記素材を上記有底孔側の外周部が縮径されるように 予成形し、 次に該素材を仕上げ成形して、 內部が中空で、 かつ軸方向の一端側 に平坦な端面を備えるとともに、 軸方向の他端側に半球面を備える半球状の軸 受体を製造するようにしたものである。 Therefore, an object of the present invention is to provide a bearing that is lightweight and has good durability. That is, the present invention provides a round bar-shaped material having a required size, wherein a bottomed hole is formed at one end face in the axial direction, and then the material is preformed so that the outer peripheral portion on the bottomed hole side is reduced in diameter. Then, the material is finish-molded to produce a hemispherical bearing having a hollow portion, a flat end surface at one axial end, and a hemispherical surface at the other axial end. It is intended to be.
本発明の製造方法により製造した軸受体は、 その内部が中空となっているの で、 内部が中実であった従来のシユーと比較して、 軽量な軸受体を提供するこ とができる。 しかも、 軸受体は単一の素材を成形して製造するので、 耐久性が 良好な軸受体を提供できる。 図面の簡単な説明  Since the inside of the bearing body manufactured by the manufacturing method of the present invention is hollow, a lighter bearing body can be provided as compared with a conventional show in which the inside is solid. Moreover, since the bearing body is manufactured by molding a single material, a bearing body with good durability can be provided. BRIEF DESCRIPTION OF THE FIGURES
図 1は本発明の第 1実施例の製造工程を示す図、  FIG. 1 is a diagram showing a manufacturing process of a first embodiment of the present invention,
図 2は本発明の第 2実施例の製造工程を示す図である。 発明を実施するための最良の形態  FIG. 2 is a view showing a manufacturing process of the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
以下図示実施例について、 本発明の製造方法を説明すると、 図 1 ( a ) にお いて、 1は半球状の軸受体を製造するための素材である。 先ず、 円柱状の鉄系 材料を軸方向において所定寸法 Lに切断して、 この素材 1を得る。 素材 1の直 径 Dを 1としたときに、 素材 1の軸方向寸法は直径 Dの 1 . 5倍程度の寸法と なっている。 この素材 1における軸方向の両端面 1 A、 I Bは、 軸心と直交す る平坦面となっている。  Hereinafter, the manufacturing method of the present invention will be described with reference to the illustrated embodiment. In FIG. 1A, reference numeral 1 denotes a material for manufacturing a hemispherical bearing body. First, a columnar iron-based material is cut into a predetermined dimension L in the axial direction to obtain the material 1. Assuming that the diameter D of the material 1 is 1, the axial dimension of the material 1 is about 1.5 times the diameter D. Both end surfaces 1 A and IB of the material 1 in the axial direction are flat surfaces orthogonal to the axis.
次に図 1 bに示すように、 素材 1における一方の端面 1 Bの中央側に所定の 深さで円形の第 1有底穴 1 Cを切削加工により形成する。 第 1有底穴 1 Cの深 さは、 軸方向寸法 Lの約 4分の 1程度に設定してあり、 第 1有底穴 1 Cの内径 は、 外径 Dの 8割程度の寸法にしている。 次に図 1 ( c ) に示すように、 上記第 1有底穴 1 Cにおける底部の中央に、 該第 1有底孔 1 Cから連続して所定深さで円形の第 2有底孔 1 Dを切削加工に より形成する。 この第 2有底孔 1 Dの内径は、 素材 1の直径 Dの約半分程度の 寸法としてあり、 第 2有底孔 1 Dの深さは、 第 1有底孔 1 Cの約 2倍の寸法に 設定している。 Next, as shown in FIG. 1B, a circular first bottomed hole 1C having a predetermined depth is formed in the center of one end face 1B of the material 1 by cutting. The depth of the first bottomed hole 1C is set to about 1/4 of the axial dimension L, and the inner diameter of the first bottomed hole 1C is set to about 80% of the outer diameter D. ing. Next, as shown in FIG. 1 (c), at the center of the bottom of the first bottomed hole 1C, a circular second bottomed hole 1 is formed at a predetermined depth continuously from the first bottomed hole 1C. D is formed by cutting. The inner diameter of the second bottomed hole 1D is about half the diameter D of the material 1, and the depth of the second bottomed hole 1D is about twice that of the first bottomed hole 1C. Dimensions are set.
次に図 1 ( c ) に示すように、 上記素材 1の他方の端面 1 Aの中央に深さが 浅い円錐形の凹部 1 Eを切削加工により形成する。  Next, as shown in FIG. 1 (c), a conical recess 1E having a shallow depth is formed in the center of the other end face 1A of the material 1 by cutting.
次に、 図 1 ( d ) に示すように、 この状態の素材 1を図示しない鍛造装置に よって予成形する。 この予成形によって、 第 1有底孔 1 Cの外方側となる外周 部 1 Fが、 第 1有底孔 1 Cの開口側が窄まる円錐状に成形される。  Next, as shown in FIG. 1 (d), the material 1 in this state is preformed by a forging device (not shown). By this preforming, the outer peripheral portion 1F on the outer side of the first bottomed hole 1C is formed into a conical shape in which the opening side of the first bottomed hole 1C is narrowed.
次に図 1 ( e ) に示すように、 上述したように予成形した上記素材 1を図示 しない鍛造装置により、 全体として半球状となるように仕上げ成形して、 半球 状の軸受体 1 ' の製造が完了する。 この仕上げ成形が完了することにより、 凹 部 1 Eは断面が円錐形から台形状に成形されるとともに、 上記端面 1 Aがさら に半径方向外方に拡径されることで、 摺動面となる平坦な端面 5が形成されて いる。 また、 円錐状であった外周部 1 Fとそこから連続する素材 1の外周部は、 表面が滑らかな半球面 6に成形される。 そして、 内部には、 半球状の中空部 7 が形成されている。 そして、 上記端面 5を構成する部分の肉厚と、 半球面 6を 構成する部分の肉厚は略同じ肉厚となっている。 さらに、 半球面 6の頂部の位 置には、 上記第 1有底孔 1 Cが縮径されて形成された小径の貫通孔 8が形成さ れており、 この貫通孔 8を介して内部の中空部 7が軸受体 1 ' の外部と連通出 来るようになっている。  Next, as shown in FIG. 1 (e), the material 1 preformed as described above is finish-molded into a hemispherical shape by a forging device (not shown) to form a hemispherical bearing body 1 ′. Manufacturing is completed. By the completion of the finish forming, the concave portion 1E is formed into a trapezoidal shape from a conical cross section, and the end surface 1A is further expanded radially outward, so that the concave portion 1E is formed with a sliding surface. A flat end face 5 is formed. Further, the conical outer peripheral portion 1F and the outer peripheral portion of the material 1 continuous therefrom are formed into a hemispherical surface 6 having a smooth surface. A hemispherical hollow portion 7 is formed inside. The thickness of the portion forming the end face 5 and the thickness of the portion forming the hemisphere 6 are substantially the same. Further, a small-diameter through-hole 8 formed by reducing the diameter of the first bottomed hole 1C is formed at the top of the hemisphere 6, and the inside of the inside is formed through the through-hole 8. The hollow part 7 communicates with the outside of the bearing body 1 ′.
以上のように、 上記本実施例の製造方法により製造した半球状の軸受体 1 ' は、 その内部が中空となっているので、 内部が中実であった従来の半球状シュ 一と比較して、 軽量な軸受体 1 ' を提供できる。 しかも、 軸受体 1 ' は単一の 素材を成形して製造するので、 製造コストが安く耐久性が良好な軸受体を提供 することができる。 As described above, since the inside of the hemispherical bearing body 1 ′ manufactured by the manufacturing method of the present embodiment is hollow, it is compared with a conventional hemispherical shell having a solid inside. Thus, a lightweight bearing 1 'can be provided. Moreover, the bearing 1 ′ is a single Since the material is manufactured by molding, a bearing body with low manufacturing cost and excellent durability can be provided.
したがって、 本実施例によって製造した半球状の軸受体 1 ' は、 斜板式コン プレッサに用いて好適である。  Therefore, the hemispherical bearing body 1 'manufactured according to the present embodiment is suitable for use in a swash plate type compressor.
次に、 図 2 (a) 〜図 2 (e) は、 本発明の第 2実施例を示したものであり、 この第 2実施例は、 上記第 1実施例の製造工程における凹部 1 Eの形成過程を 省略したものである。  Next, FIGS. 2 (a) to 2 (e) show a second embodiment of the present invention. The formation process is omitted.
すなわち、 先ず、 素材 1における一方の端面 1 Bの中央側に所定の深さで円 形の第 1有底穴 1 Cを切削加工により形成する （図 2 (a)、 図 2 (b))。  That is, first, a circular first bottomed hole 1C is formed at a predetermined depth in the center of one end surface 1B of the material 1 by cutting (FIGS. 2 (a) and 2 (b)). .
次に、 上記第 1有底穴 1 Cにおける底部の中央に、 該第 1有底孔 1 Cから連 続して所定深さで第 2有底孔 1Dを切削加工により形成する （図 2 (c))。 次に、 この状態の素材 1を図示しない鍛造装置によって予成形する。 この予 成形によって、 第 1有底孔 1 Cの外方側となる外周部 1 Fが、 第 1有底孔 1 C の開口側が窄まる円錐状に成形される （図 2 (d))。  Next, in the center of the bottom of the first bottomed hole 1C, a second bottomed hole 1D is formed by cutting at a predetermined depth continuously from the first bottomed hole 1C (see FIG. c)). Next, the material 1 in this state is preformed by a forging device (not shown). By this preforming, the outer peripheral portion 1F on the outer side of the first bottomed hole 1C is formed into a conical shape in which the opening side of the first bottomed hole 1C is narrowed (FIG. 2 (d)).
次に、 このように予成形した上記素材 1を図示しない鍛造装置により、 全体 として半球状となるように仕上げ成形する。 これにより、 上記第 1実施例と 同様に中空部 7を備えた半球状の軸受体 1 ' が製造される。 この第 2実施例で は、 凹部 1 Eを省略したので、 端面 5の全域が平坦面となっている。 仕上げ成 形完了後の軸受体 1 ' のその他の構成は、 上記第 1実施例のものと同じである。 このような第 2実施例によつても上記第 1実施例と同様の作用効果を得るこ とができる。 産業上の利用可能性  Next, the preformed material 1 is finish-molded by a forging device (not shown) so as to have a hemispherical shape as a whole. Thus, a hemispherical bearing body 1 ′ having the hollow portion 7 is manufactured as in the first embodiment. In the second embodiment, since the concave portion 1E is omitted, the entire area of the end face 5 is flat. Other configurations of the bearing body 1 ′ after the completion of the finish forming are the same as those of the first embodiment. According to the second embodiment, the same operation and effect as those of the first embodiment can be obtained. Industrial applicability
以上のように、 本発明によれば、 軽量であって、 かつ耐久性が良好な軸受体 を提供することができるという効果が得られる。  As described above, according to the present invention, the effect of being able to provide a bearing body that is lightweight and has excellent durability is obtained.

Claims

請 求 の 範 囲 The scope of the claims
1 . 所要寸法の丸棒状の素材における軸方向の一方の端面に有底孔を形成し、 次に上記素材を上記有底孔側の外周部が縮径されるように予成形し、 次に該素 材を仕上げ成形して、 内部が中空で、 かつ軸方向の一端側に平坦な端面を備え るとともに、 軸方向の他端側に半球面を備える半球状の軸受体を製造すること を特徴とする軸受体の製造方法。 1. A bottomed hole is formed at one end face in the axial direction of a round bar-shaped material having required dimensions, and then the material is preformed so that the outer peripheral portion on the bottomed hole side is reduced in diameter. This material is finish-molded to produce a hemispherical bearing body having a hollow inside, a flat end face at one axial end, and a hemispherical face at the other axial end. Characteristic method of manufacturing a bearing body.
2 . 上記有底孔は開口側が大径となる二段階の有底孔であることを特徴とする 請求項 1に記載の軸受体の製造方法。 2. The method for manufacturing a bearing body according to claim 1, wherein the bottomed hole is a two-stage bottomed hole having a large diameter on the opening side.
3 . 上記所要の寸法に切断された素材における他方の端面に凹部を形成し、 上 記仕上げ成形が完了した際に上記平坦な端面の中央に凹部を形成したことを特 徴とする請求項 1または請求項 2に記載の軸受体の製造方法。 3. A concave portion is formed in the other end surface of the material cut to the required dimensions, and a concave portion is formed in the center of the flat end surface when the above-mentioned finish forming is completed. Or the method for producing a bearing body according to claim 2.
4 . 上記半球面の頂部の位置には、 上記有底孔が縮径されることで形成された 小径の貫通孔が形成されており、 この貫通孔を介して内部の中空部分と外部と が連通していることを特徴とする請求項 1から請求項 3のいずれか 1つに記載 の軸受体の製造方法。 4. At the top of the hemisphere, there is formed a small-diameter through-hole formed by reducing the diameter of the bottomed hole. Through this through-hole, the inside hollow portion and the outside are separated. 4. The method for manufacturing a bearing body according to claim 1, wherein the bearing body is in communication.
5 . 上記丸棒状の材料として鉄系の材料を用いたことを特徴とする請求項 1か ら請求項 4のいずれか 1つに記載の軸受体の製造方法。 5. The method according to claim 1, wherein an iron-based material is used as the round bar-shaped material.
PCT/JP2003/010786 2002-08-30 2003-08-26 Method of producing bearings WO2004020824A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103143580A (en) * 2013-03-12 2013-06-12 宁波安拓实业有限公司 Manufacturing process of conical sleeve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101090662B1 (en) 2008-06-13 2011-12-07 한라공조주식회사 Forming method of center hole of shaft for compressor
JP2010048156A (en) * 2008-08-21 2010-03-04 Taiho Kogyo Co Ltd Shoe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512175A (en) * 1980-03-28 1985-04-23 Taiho Kogyo Co., Ltd. Swash plate type compressor shoe and manufacturing method therefor
US4683804A (en) * 1985-01-18 1987-08-04 Taiho Kogyo Kabushiki Kaisha Swash plate type compressor shoe
JP2001263225A (en) * 2000-03-17 2001-09-26 Toyota Autom Loom Works Ltd Method of manufacturing shoe for swash plate type compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512175A (en) * 1980-03-28 1985-04-23 Taiho Kogyo Co., Ltd. Swash plate type compressor shoe and manufacturing method therefor
US4683804A (en) * 1985-01-18 1987-08-04 Taiho Kogyo Kabushiki Kaisha Swash plate type compressor shoe
JP2001263225A (en) * 2000-03-17 2001-09-26 Toyota Autom Loom Works Ltd Method of manufacturing shoe for swash plate type compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103143580A (en) * 2013-03-12 2013-06-12 宁波安拓实业有限公司 Manufacturing process of conical sleeve

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