WO2018199232A1 - Spherical sliding bearing and method for manufacturing same - Google Patents

Spherical sliding bearing and method for manufacturing same Download PDF

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Publication number
WO2018199232A1
WO2018199232A1 PCT/JP2018/016991 JP2018016991W WO2018199232A1 WO 2018199232 A1 WO2018199232 A1 WO 2018199232A1 JP 2018016991 W JP2018016991 W JP 2018016991W WO 2018199232 A1 WO2018199232 A1 WO 2018199232A1
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Prior art keywords
outer ring
metal plate
inner ring
ring
spherical
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PCT/JP2018/016991
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French (fr)
Japanese (ja)
Inventor
ゆりえ 落合
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Ntn株式会社
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Priority claimed from JP2018079507A external-priority patent/JP2018189233A/en
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2018199232A1 publication Critical patent/WO2018199232A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in

Definitions

  • the present invention relates to a spherical plain bearing that oscillates while receiving a load and allows an inclination of a shaft and a method for manufacturing the same.
  • a spherical plain bearing is a combination of an inner ring having a convex spherical sliding surface and an outer ring having a concave spherical sliding surface, which rotates or swings while receiving a load, and has a shaft. It is comprised so that the inclination of may be accept
  • the inner ring of this type of conventional spherical plain bearing is formed by cutting a metal bar or pipe material and forming an outer peripheral surface that forms a convex spherical surface and an inner peripheral surface that forms a cylindrical surface by cutting or grinding. It was made by doing.
  • the outer ring is manufactured by cutting a metal bar or pipe material and forming an outer peripheral surface forming a cylindrical surface and an inner peripheral surface forming a concave spherical surface by cutting, grinding, or the like. (For example, see Patent Document 1 below).
  • a problem to be solved by the present invention is to provide a spherical plain bearing capable of improving the yield of materials.
  • the present invention is a spherical plain bearing comprising a combination of an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface that is in sliding contact with the sliding surface of the inner ring.
  • the outer ring is formed of a strip-shaped metal plate formed in a cylindrical shape, and the metal plate has a concave surface whose cross-sectional shape in the width direction is an arc on one surface, and the one surface is the outer ring.
  • a configuration having an inner peripheral surface can be employed.
  • one surface of the strip-shaped metal plate formed in a cylindrical shape is the concave surface of the outer ring, and the other surface of the metal plate is the outer peripheral surface of the outer ring.
  • both ends of a cylindrical outer ring made of a metal plate can be widened so that the inner ring can be easily fitted to the inner periphery of the outer ring.
  • the outer ring includes a cylindrical outer ring member that is fitted to the outer periphery of the outer ring by an interference fit, and the outer ring fitted with the outer ring member has one end portion and the other end portion of each other.
  • the structure which will be in the state which abuts can be employ
  • the outer ring in which the outer ring member is fitted to the outer peripheral part can be finished so as to be a spherical surface along the sliding surface of the inner ring with respect to the inner peripheral surface. For this reason, the dimensional accuracy of the inner peripheral surface of the outer ring can be improved.
  • the inner ring can be fitted to the inner periphery of the outer ring. Furthermore, the outer ring in which the inner ring is fitted to the inner circumferential part can prevent the inner ring from dropping from the outer ring by fitting the outer ring member to the outer circumferential part.
  • the present invention is a method for manufacturing a spherical plain bearing comprising an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface that is in sliding contact with the sliding surface of the inner ring.
  • a concave surface is formed on one surface of the belt-shaped metal plate so that the cross-sectional shape in the width direction is an arc by forging, The metal plate is bent so that one end and the other end of the metal plate face each other in a state where the concave surface is inside, and the outer ring having the one surface as an inner peripheral surface is formed.
  • the present invention provides a spherical plain bearing comprising a combination of an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner circumferential surface slidably contacting the sliding surface of the inner ring.
  • the inner ring is formed of a strip-shaped metal plate formed in a cylindrical shape, and the metal plate has a convex surface whose cross-sectional shape in the width direction is an arc on one surface, and the one surface is the inner ring.
  • a configuration having a sliding surface can be employed.
  • one surface of the strip-shaped metal plate formed in a cylindrical shape is the convex surface of the inner ring, and the other surface of the metal plate is the inner peripheral surface of the inner ring.
  • the said structure WHEREIN The said metal plate employ
  • the inner ring can be easily fitted to the inner peripheral portion of the outer ring because the plurality of strip-shaped divided bodies arranged in a cylindrical shape can be joined to form the inner ring at the inner peripheral portion of the outer ring.
  • the metal plate has a cylindrical surface positioned radially inward of the convex surface on both axial sides of the convex surface, or a configuration in which the inner ring has a circumferential groove on the convex surface is adopted. be able to.
  • the present invention provides a spherical plain bearing comprising an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface slidably contacting the sliding surface of the inner ring.
  • a method Form a convex surface on one surface of the band-shaped metal plate so that the cross-sectional shape in the width direction becomes an arc by forging, Bending the metal plate into a cylindrical shape by abutting one end and the other end of the metal plate with the convex surface on the outside, forming the inner ring having the one surface as the sliding surface , Finishing the convex surface of the inner ring to be a spherical surface along the inner peripheral surface of the outer ring, A manufacturing method in which the inner ring is combined with the inner side of the outer ring can be employed.
  • the outer ring can form the concave surface which is a spherical surface by performing forging or the like on one surface of the metal plate. For this reason, the part removed by grinding etc. with respect to the material used as an outer ring
  • the inner ring can form the convex surface which is a spherical surface by performing forging or the like on one surface of the metal plate. For this reason, the part removed by grinding etc. with respect to the material used as an inner ring reduces, and the improvement of the yield of the material can be aimed at.
  • Partially cutaway perspective view showing the state before bending of the metal plate as the inner ring
  • segmentation perspective view which shows the modification of an inner ring
  • Side view showing a modification of the inner ring Longitudinal sectional view showing an inner ring having a circumferential groove on the outer periphery Longitudinal sectional view showing another modification of the inner ring
  • the perspective view which shows the state before processing the metal plate used as the inner ring
  • the spherical plain bearing 10 is a combination of an inner ring 1 having a spherical sliding surface 2 on the outer periphery and an outer ring 3 having an inner peripheral surface 4 slidably contacting the sliding surface 2. And an outer ring member 5 fitted to the outer periphery of the outer ring 3.
  • the inner ring 1 is a convex spherical surface whose outer peripheral surface is a sliding surface 2, and is made of a metallic cylindrical member whose inner peripheral surface is a cylindrical surface.
  • the sliding surface 2 has a circular cross section in the radial direction.
  • the inside of the inner peripheral surface of the inner ring 1 is a bearing hole 6 through which a support shaft (not shown) passes in the axial direction.
  • the inner ring 1 is a plane in which both side surfaces in the axial direction are parallel to the radial plane, and the interval between the side surfaces is formed wider than the interval between the side surfaces of the outer ring 3.
  • the outer ring 3 is composed of one strip-shaped metal plate 11 formed in a cylindrical shape, and the inner peripheral surface 4 is a spherical concave surface, and the outer peripheral surface 7 is a cylindrical surface.
  • the inner peripheral surface 4 of the outer ring 3 has a circular cross-sectional shape in the radial direction, and the arc has the same or slightly larger radius of curvature than the arc of the sliding surface 2 of the inner ring 1.
  • the outer ring member 5 is fitted on the outer peripheral surface 7 of the outer ring 3 by an interference fit.
  • one end 11b and the other end 11c of the metal plate 11 constituting the outer ring 3 are abutted against each other (see FIG. 4C).
  • the inner peripheral surface 4 of the outer ring 3 is a continuous surface having no radial step.
  • the outer ring 3 is made of a strip-shaped metal plate such as an aluminum alloy, stainless steel, or steel. Further, as will be described later, the outer ring 3 is formed into a cylindrical shape by bending a metal plate 11 so that one surface thereof becomes a concave surface 11a having an arc cross section and the concave surface 11a becomes an inner peripheral surface. It is formed.
  • the outer ring member 5 is formed in a cylindrical shape, and an inner peripheral surface and an outer peripheral surface thereof are formed in a cylindrical surface.
  • a housing (not shown) for attaching the spherical plain bearing 10 is fitted to the outer peripheral portion of the outer ring member 5.
  • the material of the inner ring 1 and the outer ring member 5 is not particularly limited, and can be made of a metal such as an aluminum alloy, stainless steel, or steel, a synthetic resin, or a ceramic.
  • the spherical plain bearing 10 of this embodiment is configured as described above, and both ends of the outer ring 3 made of the cylindrical metal plate 11 can be widened to combine the inner ring 1 inside the outer ring 3. For this reason, the combination of the inner ring 1 and the outer ring 3 becomes easy.
  • the outer ring 3 is formed by fitting the outer ring member 5 to the outer peripheral surface 7 by an interference fit.
  • the outer ring 3 can be finished on the inner circumferential surface 4 before the inner ring 1 is combined.
  • the inner circumferential surface 4 of the outer ring 3 can improve the dimensional accuracy as a concave spherical surface.
  • one surface of the strip-shaped metal plate 11 formed in a cylindrical shape is a concave surface 11 a
  • the other surface of the metal plate 11 is an outer peripheral surface 7.
  • the material of the outer ring 3 may be subjected to a finishing process such as a minimum necessary cutting or grinding process for forming the concave surface 11a on one surface of the metal plate 11. For this reason, it becomes possible to reduce the part removed by cutting etc. with respect to the material of the outer ring
  • the outer ring 3 has the outer ring member 5 fitted on the outer peripheral surface 7 by an interference fit.
  • the present invention is not limited to this.
  • the outer ring 3 the outer ring member 5 can be directly fitted into the housing (not shown) by an interference fit without fitting. Even in this case, the outer ring 3 is in a state in which the one end 11b and the other end 11c of the metal plate 11 constituting the outer ring 3 are abutted with each other.
  • FIGS. 3A to 3C and FIGS. 4A to 4C are views showing a manufacturing process of the spherical plain bearing 10.
  • a band-shaped metal plate 11 having the same width as the axial width W1 of the outer ring 3 is created.
  • the thickness of the metal plate 11 is the same thickness as the distance a1 between the outer peripheral surface 7 of the outer ring 3 and the minimum inner diameter portion of the inner peripheral surface 4, and for example, the load capacity, the usage environment, and the usage of the spherical plain bearing 10 are used. It can be set by the device.
  • the strip-shaped metal plate 11 is cut to the same length as the outer peripheral surface circumferential length L1 of the outer ring 3 shown in FIG. 2B. Thereafter, as shown in FIG. 3C, the strip-shaped metal plate 11 is inclined at the angle ⁇ 1 inward in the longitudinal direction from the other surface 11d toward the one surface at the one end portion 11b and the other end portion 11c in the length direction. Cutting to the state to do.
  • the angle ⁇ 1 at the one end portion 11b and the other end portion 11c is the same length as the peripheral length L2 of the minimum inner diameter portion of the inner peripheral surface 4 of the outer ring 3 shown in FIG. It is prescribed by that.
  • a concave surface 11 a is formed by forging so that the cross-sectional shape in the width direction is an arc with respect to one surface of the metal plate 11.
  • the radius of curvature of the arc that is the cross-sectional shape of the concave surface 11a in the width direction is the same as or slightly larger than the radius of curvature of the sliding surface 2 of the inner ring 1.
  • the outer ring 3 is formed by bending the metal plate 11 into a cylindrical shape by abutting the one end portion 11b and the other end portion 11c with the concave surface 11a inside.
  • the outer ring 3 When the bending process is finished and the bending stress is released, the outer ring 3 is in a state in which the one end 11b and the other end 11c are slightly separated as shown in FIG. 4B.
  • the cylindrical outer ring member 5 is fitted to the outer periphery of the outer ring 3 by interference fitting. At this time, since the outer ring 3 is tightened by the outer ring member 5, the one end part 11b and the other end part 11c of the outer ring 3 are brought into contact with each other (see FIG. 4C).
  • the concave surface 11 a that becomes the inner peripheral surface 4 of the outer ring 3 is finished so as to be a spherical surface along the sliding surface 2 of the inner ring 1.
  • the outer ring 3 is in a state in which one end portion 11b and the other end portion 11c thereof are abutted with each other.
  • the inner peripheral surface 4 of the outer ring 3 becomes a continuous surface without a step in the radial direction. Note that superfinishing can be performed instead of the finishing, and superfinishing may be performed after finishing.
  • the outer ring member 5 is removed from the outer ring 3, the space between one end 11b and the other end 11c of the outer ring 3 is expanded, the outer ring 3 is expanded, and the inner ring 1 is combined inside.
  • the inner ring 1 and the outer ring 3 are combined to form a spherical plain bearing 10.
  • a housing (not shown) is fitted to the outer periphery of the outer ring 3 by an interference fit.
  • the outer ring 3 is brought into a state where the one end part 11 b and the other end part 11 c are abutted, and the sliding surface 2 of the inner ring 1 can be smoothly slid with respect to the inner peripheral surface 4 of the outer ring 3. .
  • the outer ring member 5 may be fitted to the outer peripheral part of the outer ring 3 by an interference fit, and the one end 11b and the other end 11c of the outer ring 3 may be joined.
  • this joining method an existing method such as arc welding or spot welding can be used.
  • the spherical plain bearing 20 of this embodiment includes an outer ring member 5 in that the outer ring 3 is formed of a cylindrical member that is seamless in the radial direction, and the inner ring 1 is formed of a band-shaped metal plate 21 formed in a cylindrical shape. This is different from the first embodiment described above. In other configurations, the same configurations as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the spherical plain bearing 20 of this embodiment includes a combination of an inner ring 1 having a spherical sliding surface 2 on the outer periphery and an outer ring 3 having an inner peripheral surface 4 slidably contacting the sliding surface 2. It will be.
  • the inner ring 1 is composed of one strip-shaped metal plate 21 formed in a cylindrical shape, and has a sliding surface 2 that is a spherical surface on the outer periphery and an inner peripheral surface that is a cylindrical surface on the inner periphery.
  • the inside of the inner peripheral surface of the inner ring 1 has a bearing hole 6 through which a support shaft (not shown) passes in the axial direction.
  • the inner ring 1 is a plane in which both side surfaces in the axial direction are parallel to the radial plane, and the axial width W2 defined as the interval between the side surfaces is wider than the interval between the side surfaces of the outer ring 3. It is formed (see FIG. 5).
  • the inner ring 1 has one end 21b and the other end 21c of a metal plate 21 constituting the inner ring 1 attached to each other (see FIG. 6B).
  • the sliding surface 2 of the inner ring 1 is a continuous surface having no radial step.
  • the inner ring 1 is composed of a strip-shaped metal plate 21 such as an aluminum alloy, stainless steel, or steel. Further, as will be described later, the inner ring 1 is formed so that one surface of the metal plate 21 becomes a convex surface 21a whose cross-sectional shape in the width direction is an arc, and the convex surface 21a becomes a sliding surface 2 Is formed in a cylindrical shape.
  • the outer ring 3 is made of a metallic cylindrical member having an outer peripheral surface 7 that is a cylindrical surface and an inner peripheral surface 4 that is a concave spherical surface that protrudes radially outward.
  • the inner peripheral surface 4 of the outer ring 3 has a circular cross section in the radial direction.
  • the arc of the inner peripheral surface 4 of the outer ring 3 has the same or slightly larger radius of curvature than the arc of the sliding surface 2 of the inner ring 1.
  • the material of the outer ring 3 is not particularly limited, and for example, a metal such as an aluminum alloy, stainless steel, or steel, a synthetic resin, or a ceramic can be employed.
  • the spherical plain bearing 20 of the second embodiment is configured, and in the inner ring 1, one surface of the strip-shaped metal plate 21 formed in a cylindrical shape becomes a convex surface 21 a, and the other surface of the metal plate 21. Is the inner surface.
  • the material of the inner ring 1 may be subjected to a finishing process such as a minimum necessary cutting or grinding process for forming the convex surface 21a on one surface of the metal plate 21. This makes it possible to reduce the portion to be removed and improve the material yield.
  • FIG. 7A, FIG. 7B, FIG. 8A, and FIG. 8B are diagrams showing manufacturing steps of the spherical plain bearing 20.
  • the inner ring 1 has the same width as the axial width W2, and the distance between the inner peripheral surface of the inner ring 1 and the maximum outer diameter portion of the sliding surface 2 is as follows.
  • a strip-shaped metal plate 21 having the same thickness as a2 is created.
  • the strip-shaped metal plate 21 is cut to the same length as the sliding surface circumferential length L3 at the maximum outer diameter portion of the sliding surface 2 of the inner ring 1 shown in FIG. 6B.
  • the band-shaped metal plate 21 is inclined inward in the length direction from one surface to the other surface 21d at one end 21b and the other end 21c in the length direction. Cutting in an inclined state.
  • the angle ⁇ 2 at the one end 21b and the other end 21c is defined by setting the length on the other surface 21d side of the metal plate 21 to the same length as the inner peripheral surface circumferential length L4 of the inner ring 1 shown in FIG. 6B. Is done.
  • a convex surface 21a is formed on one surface of the metal plate 21 by forging so that the cross-sectional shape in the width direction becomes an arc.
  • the metal plate 21 is bent into a cylindrical shape by abutting the one end 21b and the other end 21c with the convex surface 21a facing outward.
  • the one end 21b and the other end 21c of the inner ring 1 are joined together by welding in a state where they are butted.
  • the convex surface 21a of the joined inner ring 1 is finished so as to be a spherical surface along the inner circumferential surface 4 of the outer ring 3, thereby forming the inner ring 1 (see FIG. 6B).
  • the inner ring 1 is in a state where the one end 21b and the other end 21c are abutted against each other.
  • the sliding surface 2 of the inner ring 1 becomes a continuous surface without a step in the radial direction. Note that superfinishing can be performed instead of the finishing, and superfinishing may be performed after finishing.
  • a spherical plain bearing 20 is configured by this combination.
  • the thickness of the metal plate 21 is the same as the distance a ⁇ b> 2 between the inner peripheral surface of the inner ring 1 and the maximum outer diameter portion of the sliding surface 2.
  • the other surface 21 d of the metal plate 21 becomes the inner peripheral surface of the inner ring 1.
  • wheel 1 of this embodiment consists of the one strip
  • a band-shaped metal plate 21 is formed from three band-shaped divided bodies 22 having an arc shape, and each band-shaped divided body 22 is in a cylindrical shape.
  • the inner ring 1 shown in FIG. 10 can also be configured by joining together by welding.
  • the inner ring 1 one end portion 21b and the other end portion 21c of a single band-shaped metal plate 21 formed in a cylindrical shape are joined by welding, but the joining means is not limited to welding.
  • the inner ring 1 may have a circumferential groove 1 a formed on the entire circumference of the sliding surface 2.
  • the one end 21b and the other end 21c of the metal plate 21 can be joined by the fixed band 30 wound around the circumferential groove 1a.
  • the inner ring 1 has a sliding surface 2 on the entire outer peripheral surface, but is not limited thereto.
  • cylindrical surfaces 23a and 23a may be provided on both sides in the axial direction of the sliding surface 2.
  • the metal plate 21 is integrally formed with a protruding portion 23 that protrudes outward in the width direction over the entire length of the convex surface 21 a that becomes the sliding surface 2.
  • the outer peripheral surfaces of the protruding portions 23 become cylindrical surfaces 23a and 23a.
  • the cylindrical surface 23 a is located on the radially inner side with respect to the convex surface 21 a serving as the sliding surface 2.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

Provided is a spherical sliding bearing configured so that the yield of a material can be improved. This spherical slide bearing comprises a combination of: an inner ring (1) having a spherical sliding surface (2) on the outer periphery thereof; and an outer ring (3) having an inner peripheral surface (4) in sliding contact with the sliding surface (2) of the inner ring (1). The outer ring (3) is formed from a circular-cylindrically formed band-shaped metallic plate. The metallic plate has on one side thereof a recessed surface, the cross-sectional shape of which in a width direction being a circular arc, and the one side serves as the inner peripheral surface (4) of the outer ring (3).

Description

球面滑り軸受およびその製造方法Spherical plain bearing and manufacturing method thereof
　この発明は、荷重を受けつつ揺動運動し、かつ軸の傾きを許容する球面滑り軸受およびその製造方法に関する。 The present invention relates to a spherical plain bearing that oscillates while receiving a load and allows an inclination of a shaft and a method for manufacturing the same.
　従来、球面滑り軸受は、凸球面の摺動面を有する内輪と、凹球面の摺動面を有する外輪とを組み合わせたものであって、荷重を受けつつ回転運動あるいは揺動運動し、かつ軸の傾きを許容するように構成されている。 Conventionally, a spherical plain bearing is a combination of an inner ring having a convex spherical sliding surface and an outer ring having a concave spherical sliding surface, which rotates or swings while receiving a load, and has a shaft. It is comprised so that the inclination of may be accept | permitted.
　この種の従来の球面滑り軸受の内輪は、金属製の棒材またはパイプ材等の材料を切断し、切削、研削加工などにより、凸球面をなす外周面および円筒面をなす内周面を形成することで製作されていた。 The inner ring of this type of conventional spherical plain bearing is formed by cutting a metal bar or pipe material and forming an outer peripheral surface that forms a convex spherical surface and an inner peripheral surface that forms a cylindrical surface by cutting or grinding. It was made by doing.
　また、外輪も同様に、金属製の棒材またはパイプ材等の材料を切断し、切削、研削加工などにより、円筒面をなす外周面および凹球面をなす内周面を形成することで製作されていた（例えば、下記特許文献１参照）。 Similarly, the outer ring is manufactured by cutting a metal bar or pipe material and forming an outer peripheral surface forming a cylindrical surface and an inner peripheral surface forming a concave spherical surface by cutting, grinding, or the like. (For example, see Patent Document 1 below).
実開平６－１４５４０号公報Japanese Utility Model Publication No. 6-14540
　特許文献１に記載された球面滑り軸受では、内輪または外輪の製作の際、上記材料を所定の寸法となるまでに、切削、研削して取り除く必要がある。特に、棒材などの中実の素材から内輪の内外周面または外輪の内周面を形成する際、素材の多くの部分を取り除く必要があることから、材料の歩留りが悪いという問題があった。 In the spherical plain bearing described in Patent Document 1, when manufacturing the inner ring or the outer ring, it is necessary to cut and grind the material until it reaches a predetermined size. In particular, when forming the inner and outer peripheral surfaces of the inner ring or the inner peripheral surface of the outer ring from a solid material such as a bar, there is a problem that the yield of the material is poor because it is necessary to remove many parts of the material. .
　そこで、この発明が解決すべき課題としては、材料の歩留りの向上を図ることができる球面滑り軸受を提供することにある。 Therefore, a problem to be solved by the present invention is to provide a spherical plain bearing capable of improving the yield of materials.
　上記の課題を解決するために、この発明は、外周に球面の摺動面を有する内輪と、前記内輪の摺動面に摺接する内周面を有する外輪との組み合わせからなる球面滑り軸受であって、
　前記外輪は、円筒状に形成される帯状の金属板からなり、前記金属板は、一方の表面に幅方向の断面形状が円弧となる凹面を有するものであり、前記一方の表面が前記外輪の内周面とされた構成を採用することができる。 In order to solve the above-mentioned problems, the present invention is a spherical plain bearing comprising a combination of an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface that is in sliding contact with the sliding surface of the inner ring. And
The outer ring is formed of a strip-shaped metal plate formed in a cylindrical shape, and the metal plate has a concave surface whose cross-sectional shape in the width direction is an arc on one surface, and the one surface is the outer ring. A configuration having an inner peripheral surface can be employed.
　この構成によると、円筒状に形成される帯状の金属板の一方の表面が、外輪の上記凹面となり、その金属板の他方の表面が外輪の外周面となる。 According to this configuration, one surface of the strip-shaped metal plate formed in a cylindrical shape is the concave surface of the outer ring, and the other surface of the metal plate is the outer peripheral surface of the outer ring.
　また、金属板からなる円筒状の外輪の両端部を広げて、外輪の内周部に内輪を容易に嵌め合わせることができる。 Also, both ends of a cylindrical outer ring made of a metal plate can be widened so that the inner ring can be easily fitted to the inner periphery of the outer ring.
　この構成において、前記外輪がその外周部に締まり嵌めにより嵌合される円筒状の外環部材を備え、その外環部材が嵌合された前記外輪は、その一端部および他端部が相互に突き当たる状態となる構成を採用することができる。 In this configuration, the outer ring includes a cylindrical outer ring member that is fitted to the outer periphery of the outer ring by an interference fit, and the outer ring fitted with the outer ring member has one end portion and the other end portion of each other. The structure which will be in the state which abuts can be employ | adopted.
　この構成によると、外環部材が外周部に嵌り合う外輪は、その内周面に対して内輪の摺動面に沿う球面となるように仕上げ加工を行うことが可能となる。このため、外輪の内周面の寸法精度を向上させることができる。 According to this configuration, the outer ring in which the outer ring member is fitted to the outer peripheral part can be finished so as to be a spherical surface along the sliding surface of the inner ring with respect to the inner peripheral surface. For this reason, the dimensional accuracy of the inner peripheral surface of the outer ring can be improved.
　また、外環部材を外輪の外周部から取り外すことにより、外輪の内周部に内輪を嵌め合わせることができる。さらに、内周部に内輪が嵌め合わされた外輪は、その外周部に外環部材を嵌め合わせることで、外輪からの内輪の脱落を防止することができる。 Also, by removing the outer ring member from the outer periphery of the outer ring, the inner ring can be fitted to the inner periphery of the outer ring. Furthermore, the outer ring in which the inner ring is fitted to the inner circumferential part can prevent the inner ring from dropping from the outer ring by fitting the outer ring member to the outer circumferential part.
　上記課題を解決するために、この発明は、外周に球面の摺動面を有する内輪と、前記内輪の摺動面に摺接する内周面を有する外輪とからなる球面滑り軸受の製造方法であって、
　帯状の金属板の一方の表面に鍛造加工により幅方向の断面形状が円弧となるように凹面を形成し、
　前記金属板を前記凹面が内側となる状態で、前記金属板の一端部と他端部を突き合わせて円筒状とする曲げ加工して、前記一方の表面を内周面とする前記外輪を形成し、
　前記外輪の外周部に外環部材を締まり嵌めにより嵌め合わせ、
　前記外輪の凹面を前記内輪の摺動面に沿う球面となるように仕上げ加工を施し、
　前記外輪を前記外環部材から取り外し、
　前記外輪の内側に前記内輪を組み合わせた方法を採用することができる。 In order to solve the above-mentioned problems, the present invention is a method for manufacturing a spherical plain bearing comprising an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface that is in sliding contact with the sliding surface of the inner ring. And
A concave surface is formed on one surface of the belt-shaped metal plate so that the cross-sectional shape in the width direction is an arc by forging,
The metal plate is bent so that one end and the other end of the metal plate face each other in a state where the concave surface is inside, and the outer ring having the one surface as an inner peripheral surface is formed. ,
Fit the outer ring member to the outer periphery of the outer ring by an interference fit,
Finishing the concave surface of the outer ring to be a spherical surface along the sliding surface of the inner ring,
Removing the outer ring from the outer ring member;
A method in which the inner ring is combined with the inner side of the outer ring can be employed.
　前記方法の後に、さらに、前記外輪の外周部に前記外環部材を締まり嵌めにより嵌め合わせ、前記外輪の一端部および他端部を接合した方法を採用することができる。 After the method, it is possible to employ a method in which the outer ring member is fitted to the outer peripheral portion of the outer ring by an interference fit, and one end and the other end of the outer ring are joined.
　また、上記の課題を解決するために、この発明は、外周に球面の摺動面を有する内輪と、前記内輪の摺動面に摺接する内周面を有する外輪との組み合わせからなる球面滑り軸受であって、
　前記内輪は、円筒状に形成される帯状の金属板からなり、前記金属板は、一方の表面に幅方向の断面形状が円弧となる凸面を有するものであり、前記一方の表面が前記内輪の摺動面とされた構成を採用することができる。 In order to solve the above problems, the present invention provides a spherical plain bearing comprising a combination of an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner circumferential surface slidably contacting the sliding surface of the inner ring. Because
The inner ring is formed of a strip-shaped metal plate formed in a cylindrical shape, and the metal plate has a convex surface whose cross-sectional shape in the width direction is an arc on one surface, and the one surface is the inner ring. A configuration having a sliding surface can be employed.
　この構成によると、円筒状に形成される帯状の金属板の一方の表面が、内輪の上記凸面となり、その金属板の他方の表面が内輪の内周面となる。 According to this configuration, one surface of the strip-shaped metal plate formed in a cylindrical shape is the convex surface of the inner ring, and the other surface of the metal plate is the inner peripheral surface of the inner ring.
　上記構成において、前記金属板は、円弧状をなす複数の帯状分割体が円筒状に接合されたものであり、それぞれの前記帯状分割体が、その一方の表面に前記凸面を有する構成を採用することができる。 The said structure WHEREIN: The said metal plate employ | adopts the structure which the some strip | belt-shaped division body which makes circular arc shape joined to the cylindrical shape, and each said strip | belt-shaped division body has the said convex surface on the one surface. be able to.
　この場合、外輪の内周部において、円筒状に配置された複数の帯状分割体を接合して内輪とすることができるので、外輪の内周部に内輪を容易に嵌め合せることができる。 In this case, the inner ring can be easily fitted to the inner peripheral portion of the outer ring because the plurality of strip-shaped divided bodies arranged in a cylindrical shape can be joined to form the inner ring at the inner peripheral portion of the outer ring.
　さらに、前記金属板が前記一方の表面において、前記凸面の軸方向両側にその凸面よりも径方向内側に位置する円筒面を有する構成や、前記内輪がその凸面に周溝を有する構成を採用することができる。 Furthermore, a configuration in which the metal plate has a cylindrical surface positioned radially inward of the convex surface on both axial sides of the convex surface, or a configuration in which the inner ring has a circumferential groove on the convex surface is adopted. be able to.
　さらに、上記の課題を解決するために、この発明は、外周に球面の摺動面を有する内輪と、前記内輪の摺動面に摺接する内周面を有する外輪とからなる球面滑り軸受の製造方法であって、
　帯状の金属板の一方の表面に鍛造加工により幅方向の断面形状が円弧となるように凸面を形成し、
　前記金属板を前記凸面が外側となる状態で、前記金属板の一端部と他端部を突き合わせて円筒状とする曲げ加工し、前記一方の表面を前記摺動面とする前記内輪を形成し、
　前記内輪の凸面を前記外輪の内周面に沿う球面となるように仕上げ加工を施し、
　前記外輪の内側に前記内輪を組み合わせた製造方法を採用することができる。 Furthermore, in order to solve the above-described problems, the present invention provides a spherical plain bearing comprising an inner ring having a spherical sliding surface on the outer periphery and an outer ring having an inner peripheral surface slidably contacting the sliding surface of the inner ring. A method,
Form a convex surface on one surface of the band-shaped metal plate so that the cross-sectional shape in the width direction becomes an arc by forging,
Bending the metal plate into a cylindrical shape by abutting one end and the other end of the metal plate with the convex surface on the outside, forming the inner ring having the one surface as the sliding surface ,
Finishing the convex surface of the inner ring to be a spherical surface along the inner peripheral surface of the outer ring,
A manufacturing method in which the inner ring is combined with the inner side of the outer ring can be employed.
　この発明は、外輪は、金属板の一方の表面に対し、鍛造加工等を行うことによって、球面である上記凹面を形成することができる。このため、外輪となる材料に対して、研削加工等により取り除く部分が減り、その材料の歩留りの向上を図ることができる。 In the present invention, the outer ring can form the concave surface which is a spherical surface by performing forging or the like on one surface of the metal plate. For this reason, the part removed by grinding etc. with respect to the material used as an outer ring | wheel reduces, and the improvement of the yield of the material can be aimed at.
　また、内輪は、金属板の一方の表面に対し、鍛造加工等を行うことによって、球面である上記凸面を形成することができる。このため、内輪となる材料に対して、研削加工等により取り除く部分が減り、その材料の歩留りの向上を図ることができる。 Also, the inner ring can form the convex surface which is a spherical surface by performing forging or the like on one surface of the metal plate. For this reason, the part removed by grinding etc. with respect to the material used as an inner ring reduces, and the improvement of the yield of the material can be aimed at.
この発明に係る第一の実施形態の球面滑り軸受の縦断面図Longitudinal sectional view of the spherical plain bearing of the first embodiment according to the present invention 同上の外輪を示す縦断面図Longitudinal sectional view showing the outer ring 同上の外輪を示す側面図Side view showing the outer ring 同上の球面滑り軸受の外輪となる金属板を示す斜視図The perspective view which shows the metal plate used as the outer ring | wheel of a spherical plain bearing same as the above. 同上の金属板の一方の表面を凹面とした状態を示す斜視図The perspective view which shows the state which made one surface of the metal plate same as the concave surface 同上の外輪となる金属板の両端部を切削加工した後の状態を示す側面図The side view which shows the state after cutting both ends of the metal plate used as an outer ring same as the above 図３Ｂ中の金属板を円筒状に加工する前の状態を示す斜視図The perspective view which shows the state before processing the metal plate in FIG. 3B into a cylindrical shape. 同上の外輪を示す側面図Side view showing the outer ring 同上の外輪の外周部に外環部材を嵌め合わせた状態を示す側面図The side view which shows the state which fitted the outer ring member to the outer peripheral part of the outer ring same as the above この発明に係る第二の実施形態の球面滑り軸受の縦断面図A longitudinal sectional view of a spherical plain bearing of a second embodiment according to the present invention 同上の内輪を示す縦断面図Longitudinal sectional view showing the inner ring 同上の内輪を示す側面図Side view showing the inner ring 同上の内輪となる金属板を示す部分斜視図The fragmentary perspective view which shows the metal plate used as an inner ring same as the above 同上の内輪となる金属板の両端部を切削加工した後の状態を示す側面図Side view showing the state after cutting both ends of the metal plate that is the inner ring of the above 同上の内輪となる金属板の一方の表面を凸面に加工した後の状態を示す斜視図The perspective view which shows the state after processing the one surface of the metal plate used as an inner ring same as the above into a convex surface. 同上の内輪となる金属板の曲げ加工前の状態を示す一部切り欠き斜視図Partially cutaway perspective view showing the state before bending of the metal plate as the inner ring 同上の内輪の変形例を示す分割斜視図The division | segmentation perspective view which shows the modification of an inner ring | wheel same as the above. 同上の内輪の変形例を示す側面図Side view showing a modification of the inner ring 同上の外周に周溝を有する内輪を示す縦断面図Longitudinal sectional view showing an inner ring having a circumferential groove on the outer periphery 同上の内輪の他の変形例を示す縦断面図Longitudinal sectional view showing another modification of the inner ring 図１２Ａ中の内輪となる金属板を円筒状に加工する前の状態を示す斜視図The perspective view which shows the state before processing the metal plate used as the inner ring | wheel in FIG. 12A to a cylindrical shape.
　以下、この発明の第一の実施形態に係る球面滑り軸受を図１に基づいて説明する。この実施形態に係る球面滑り軸受１０は、図１に示すように、外周に球面の摺動面２を有する内輪１と、摺動面２に摺接する内周面４を有する外輪３との組み合わせからなり、外輪３の外周部に嵌合する外環部材５を備える。 Hereinafter, a spherical plain bearing according to a first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the spherical plain bearing 10 according to this embodiment is a combination of an inner ring 1 having a spherical sliding surface 2 on the outer periphery and an outer ring 3 having an inner peripheral surface 4 slidably contacting the sliding surface 2. And an outer ring member 5 fitted to the outer periphery of the outer ring 3.
　内輪１は、外周面が摺動面２となる凸状の球面であり、内周面が円筒面である金属製の筒状部材からなる。摺動面２は、径方向の断面形状が円弧となっている。内輪１の内周面の内部は、支持軸（図示省略）が軸方向に貫通する軸受孔６とされる。 The inner ring 1 is a convex spherical surface whose outer peripheral surface is a sliding surface 2, and is made of a metallic cylindrical member whose inner peripheral surface is a cylindrical surface. The sliding surface 2 has a circular cross section in the radial direction. The inside of the inner peripheral surface of the inner ring 1 is a bearing hole 6 through which a support shaft (not shown) passes in the axial direction.
　また、内輪１は、軸方向の両側面がラジアル平面に平行な平面であり、それぞれの側面の間隔は、外輪３のそれぞれの側面の間隔よりも広く形成されている。 Further, the inner ring 1 is a plane in which both side surfaces in the axial direction are parallel to the radial plane, and the interval between the side surfaces is formed wider than the interval between the side surfaces of the outer ring 3.
　外輪３は、円筒状に形成された一つの帯状の金属板１１からなり、内周面４が球状の凹面であり、外周面７が円筒面をなしている。外輪３の内周面４は、径方向の断面形状が円弧であり、その円弧は、内輪１の摺動面２の円弧に対して、同じまたはわずかに大きい曲率半径を有している。 The outer ring 3 is composed of one strip-shaped metal plate 11 formed in a cylindrical shape, and the inner peripheral surface 4 is a spherical concave surface, and the outer peripheral surface 7 is a cylindrical surface. The inner peripheral surface 4 of the outer ring 3 has a circular cross-sectional shape in the radial direction, and the arc has the same or slightly larger radius of curvature than the arc of the sliding surface 2 of the inner ring 1.
　外輪３の外周面７には、外環部材５が締まり嵌めにより嵌め合わされている。外環部材５が嵌め合わされる外輪３は、これを構成する金属板１１の一端部１１ｂおよび他端部１１ｃが相互に突き合わされている（図４Ｃ参照）。この突き合わせ部分において、外輪３の内周面４は径方向の段差のない連続面となっている。 The outer ring member 5 is fitted on the outer peripheral surface 7 of the outer ring 3 by an interference fit. In the outer ring 3 to which the outer ring member 5 is fitted, one end 11b and the other end 11c of the metal plate 11 constituting the outer ring 3 are abutted against each other (see FIG. 4C). In this abutting portion, the inner peripheral surface 4 of the outer ring 3 is a continuous surface having no radial step.
　外輪３は、アルミニウム合金、ステンレス鋼、鉄鋼などの帯状の金属板からなる。また、外輪３は、後述のように、金属板１１をその一方の表面が断面円弧状の凹面１１ａとなるように形成して、凹面１１ａが内周面となるように曲げ加工により円筒状に形成されたものである。 The outer ring 3 is made of a strip-shaped metal plate such as an aluminum alloy, stainless steel, or steel. Further, as will be described later, the outer ring 3 is formed into a cylindrical shape by bending a metal plate 11 so that one surface thereof becomes a concave surface 11a having an arc cross section and the concave surface 11a becomes an inner peripheral surface. It is formed.
　外環部材５は、円筒状に形成され、その内周面および外周面が円筒面に形成される。外環部材５の外周部に球面滑り軸受１０を取り付けるハウジング（図示省略）が嵌め合わされている。 The outer ring member 5 is formed in a cylindrical shape, and an inner peripheral surface and an outer peripheral surface thereof are formed in a cylindrical surface. A housing (not shown) for attaching the spherical plain bearing 10 is fitted to the outer peripheral portion of the outer ring member 5.
　内輪１および外環部材５の材質は、特に限定されず、例えば、アルミニウム合金、ステンレス鋼、鉄鋼などの金属製や、合成樹脂製、セラミックス製とすることができる。 The material of the inner ring 1 and the outer ring member 5 is not particularly limited, and can be made of a metal such as an aluminum alloy, stainless steel, or steel, a synthetic resin, or a ceramic.
　この実施形態の球面滑り軸受１０は、上述のように構成され、円筒状の金属板１１からなる外輪３の両端部を広げて、外輪３の内側に内輪１を組み合わせることができる。このため、内輪１と外輪３との組み合わせが容易になる。 The spherical plain bearing 10 of this embodiment is configured as described above, and both ends of the outer ring 3 made of the cylindrical metal plate 11 can be widened to combine the inner ring 1 inside the outer ring 3. For this reason, the combination of the inner ring 1 and the outer ring 3 becomes easy.
　また、外輪３は、外周面７に外環部材５が締まり嵌めにより嵌め合わされているものである。この外輪３は、内輪１を組み合わせる前に、その内周面４に対して、仕上げ加工を施すことができる。その結果、外輪３の内周面４は、凹面である球面としての寸法精度を向上させることができる。 Further, the outer ring 3 is formed by fitting the outer ring member 5 to the outer peripheral surface 7 by an interference fit. The outer ring 3 can be finished on the inner circumferential surface 4 before the inner ring 1 is combined. As a result, the inner circumferential surface 4 of the outer ring 3 can improve the dimensional accuracy as a concave spherical surface.
　さらに、外輪３は、円筒状に形成される帯状の金属板１１の一方の表面が、凹面１１ａとなり、金属板１１の他方の表面が外周面７となる。このような外輪３の材料は、金属板１１の一方の表面に凹面１１ａを形成するための必要最小限の切削または研削加工等の仕上げ加工を行えばよい。このため、外輪３の材料に対して、切削加工等により取り除く部分を減らすことが可能となり、材料の歩留りを向上させることができる。 Further, in the outer ring 3, one surface of the strip-shaped metal plate 11 formed in a cylindrical shape is a concave surface 11 a, and the other surface of the metal plate 11 is an outer peripheral surface 7. The material of the outer ring 3 may be subjected to a finishing process such as a minimum necessary cutting or grinding process for forming the concave surface 11a on one surface of the metal plate 11. For this reason, it becomes possible to reduce the part removed by cutting etc. with respect to the material of the outer ring | wheel 3, and can improve the yield of material.
　なお、この実施形態において、外輪３は、その外周面７に外環部材５が締まり嵌めにより嵌め合わされているが、これに限られない。例えば、外輪３としては、外環部材５を嵌め合わせずに、ハウジング（図示省略）の内部に締まり嵌めにより直接嵌め合わせることもできる。この場合においても、外輪３は、これを構成する金属板１１の一端部１１ｂおよび他端部１１ｃが相互に突き合わされた状態となる。 In this embodiment, the outer ring 3 has the outer ring member 5 fitted on the outer peripheral surface 7 by an interference fit. However, the present invention is not limited to this. For example, as the outer ring 3, the outer ring member 5 can be directly fitted into the housing (not shown) by an interference fit without fitting. Even in this case, the outer ring 3 is in a state in which the one end 11b and the other end 11c of the metal plate 11 constituting the outer ring 3 are abutted with each other.
　次に、第一の実施形態の球面滑り軸受１０の製造方法を図面に基づいて説明する。図３Ａ～図３Ｃ、図４Ａ～図４Ｃは、球面滑り軸受１０の製造工程を示す図である。 Next, a method for manufacturing the spherical plain bearing 10 of the first embodiment will be described with reference to the drawings. FIGS. 3A to 3C and FIGS. 4A to 4C are views showing a manufacturing process of the spherical plain bearing 10.
　上記製造方法としては、まず、図３Ａに示すように、外輪３の軸幅Ｗ１と同じ幅寸法を有する帯状の金属板１１を作成する。ここで、金属板１１の厚みは、外輪３の外周面７と内周面４の最小内径部との間隔ａ１と同じ厚みであり、例えば、球面滑り軸受１０の負荷容量、使用環境、使用される装置により設定することができる。 As the manufacturing method, first, as shown in FIG. 3A, a band-shaped metal plate 11 having the same width as the axial width W1 of the outer ring 3 is created. Here, the thickness of the metal plate 11 is the same thickness as the distance a1 between the outer peripheral surface 7 of the outer ring 3 and the minimum inner diameter portion of the inner peripheral surface 4, and for example, the load capacity, the usage environment, and the usage of the spherical plain bearing 10 are used. It can be set by the device.
　その帯状の金属板１１を、図２Ｂに示す外輪３の外周面周長Ｌ１と同じ長さに切断する。その後、図３Ｃに示すように、帯状の金属板１１を長さ方向の一端部１１ｂおよび他端部１１ｃにおいて、他方の表面１１ｄから一方の表面に向かって長さ方向内向きに角度θ１をもって傾斜する状態に切削加工をする。 The strip-shaped metal plate 11 is cut to the same length as the outer peripheral surface circumferential length L1 of the outer ring 3 shown in FIG. 2B. Thereafter, as shown in FIG. 3C, the strip-shaped metal plate 11 is inclined at the angle θ1 inward in the longitudinal direction from the other surface 11d toward the one surface at the one end portion 11b and the other end portion 11c in the length direction. Cutting to the state to do.
　一端部１１ｂおよび他端部１１ｃでの角度θ１は、金属板１１の一方の表面側での長さを、図２Ｂに示す外輪３の内周面４の最小内径部の周長Ｌ２と同じ長さとすることで規定される。 The angle θ1 at the one end portion 11b and the other end portion 11c is the same length as the peripheral length L2 of the minimum inner diameter portion of the inner peripheral surface 4 of the outer ring 3 shown in FIG. It is prescribed by that.
　次に、図３Ｂに示すように、鍛造加工により、金属板１１の一方の表面に対して幅方向の断面形状が円弧となるように凹面１１ａを形成する。このとき、凹面１１ａの幅方向断面形状である円弧の曲率半径は、内輪１の摺動面２の曲率半径と同じまたはわずかに大きいものである。これにより、外輪３の内周面４を内輪１の摺動面２に沿う状態とすることができる。 Next, as shown in FIG. 3B, a concave surface 11 a is formed by forging so that the cross-sectional shape in the width direction is an arc with respect to one surface of the metal plate 11. At this time, the radius of curvature of the arc that is the cross-sectional shape of the concave surface 11a in the width direction is the same as or slightly larger than the radius of curvature of the sliding surface 2 of the inner ring 1. Thereby, the inner peripheral surface 4 of the outer ring 3 can be in a state along the sliding surface 2 of the inner ring 1.
　続いて、図４Ａに示すように、金属板１１を凹面１１ａが内側となる状態で一端部１１ｂおよび他端部１１ｃを相互に突き合わせて円筒状とする曲げ加工をし、外輪３を形成する。 Subsequently, as shown in FIG. 4A, the outer ring 3 is formed by bending the metal plate 11 into a cylindrical shape by abutting the one end portion 11b and the other end portion 11c with the concave surface 11a inside.
　この曲げ加工が終わり、曲げ応力が開放されると、図４Ｂに示すように、外輪３は、その一端部１１ｂおよび他端部１１ｃがわずかに離れた状態となる。 When the bending process is finished and the bending stress is released, the outer ring 3 is in a state in which the one end 11b and the other end 11c are slightly separated as shown in FIG. 4B.
　曲げ加工後に、外輪３の外周部に円筒状の外環部材５を締まり嵌めにより嵌め合わせる。このとき、外環部材５により外輪３は締め付けられるため、外輪３の一端部１１ｂおよび他端部１１ｃが相互に突き合わされた状態となる（図４Ｃ参照）。 After the bending process, the cylindrical outer ring member 5 is fitted to the outer periphery of the outer ring 3 by interference fitting. At this time, since the outer ring 3 is tightened by the outer ring member 5, the one end part 11b and the other end part 11c of the outer ring 3 are brought into contact with each other (see FIG. 4C).
　そして、外輪３の内周面４となる凹面１１ａを、内輪１の摺動面２に沿う球面となるように仕上げ加工を施す。ここで、外輪３はその一端部１１ｂおよび他端部１１ｃが相互に突き合わされた状態となっている。 Then, the concave surface 11 a that becomes the inner peripheral surface 4 of the outer ring 3 is finished so as to be a spherical surface along the sliding surface 2 of the inner ring 1. Here, the outer ring 3 is in a state in which one end portion 11b and the other end portion 11c thereof are abutted with each other.
　その突き合わせ部分を含めた凹面１１ａの全周に仕上げ加工を施すことにより、外輪３の内周面４は径方向の段差のない連続面となる。なお、上記仕上げ加工の代わりに、超仕上げ加工を行うことも可能であり、仕上げ加工後に超仕上げ加工を行ってもよい。 By finishing the entire circumference of the concave surface 11a including the butted portion, the inner peripheral surface 4 of the outer ring 3 becomes a continuous surface without a step in the radial direction. Note that superfinishing can be performed instead of the finishing, and superfinishing may be performed after finishing.
　仕上げ加工後、外環部材５を外輪３から取り外し、外輪３の一端部１１ｂと他端部１１ｃとの間を広げて、外輪３を拡径して内側に内輪１を組み合わせる。このように内輪１と外輪３とが組み合わされて、球面滑り軸受１０が構成される。 After finishing, the outer ring member 5 is removed from the outer ring 3, the space between one end 11b and the other end 11c of the outer ring 3 is expanded, the outer ring 3 is expanded, and the inner ring 1 is combined inside. Thus, the inner ring 1 and the outer ring 3 are combined to form a spherical plain bearing 10.
　この球面滑り軸受１０は、外輪３の外周部にハウジング（図示省略）が締まり嵌めにより嵌め合わされる。この嵌め合わせにより、外輪３は、一端部１１ｂおよび他端部１１ｃが突き合わされた状態となり、外輪３の内周面４に対して内輪１の摺動面２を円滑に摺動させることができる。 In this spherical plain bearing 10, a housing (not shown) is fitted to the outer periphery of the outer ring 3 by an interference fit. By this fitting, the outer ring 3 is brought into a state where the one end part 11 b and the other end part 11 c are abutted, and the sliding surface 2 of the inner ring 1 can be smoothly slid with respect to the inner peripheral surface 4 of the outer ring 3. .
　なお、外輪３の内側に内輪１を組み合わせた後に、外輪３の外周部に外環部材５を締まり嵌めにより嵌め合わせ、外輪３の一端部１１ｂおよび他端部１１ｃを接合してもよい。この接合方法として、アーク溶接やスポット溶接など既存の工法を用いることができる。 Note that after the inner ring 1 is combined with the inner side of the outer ring 3, the outer ring member 5 may be fitted to the outer peripheral part of the outer ring 3 by an interference fit, and the one end 11b and the other end 11c of the outer ring 3 may be joined. As this joining method, an existing method such as arc welding or spot welding can be used.
　次に、この発明の第二の実施形態に係る球面滑り軸受を図５、図６Ａ、図６Ｂに基づいて説明する。
　この実施形態の球面滑り軸受２０は、外輪３が径方向に継ぎ目のない筒状部材から形成され、内輪１が円筒状に形成された帯状の金属板２１からなる点、外環部材５を備えていない点で、上述した第一の実施形態と相違する。その他の構成において、第一の実施形態と同じ構成と考えられるものは、同じ符号を付して、その説明を省略する。 Next, a spherical plain bearing according to a second embodiment of the present invention will be described with reference to FIGS. 5, 6A, and 6B.
The spherical plain bearing 20 of this embodiment includes an outer ring member 5 in that the outer ring 3 is formed of a cylindrical member that is seamless in the radial direction, and the inner ring 1 is formed of a band-shaped metal plate 21 formed in a cylindrical shape. This is different from the first embodiment described above. In other configurations, the same configurations as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　この実施形態の球面滑り軸受２０は、図５に示すように、外周に球面の摺動面２を有する内輪１と、摺動面２に摺接する内周面４を有する外輪３との組み合わせからなるものである。 As shown in FIG. 5, the spherical plain bearing 20 of this embodiment includes a combination of an inner ring 1 having a spherical sliding surface 2 on the outer periphery and an outer ring 3 having an inner peripheral surface 4 slidably contacting the sliding surface 2. It will be.
　内輪１は、円筒状に形成された一つの帯状の金属板２１からなり、外周に球面となる摺動面２と、内周に円筒面となる内周面を有する。内輪１の内周面の内部は、支持軸（図示省略）が軸方向に貫通する軸受孔６を有する。 The inner ring 1 is composed of one strip-shaped metal plate 21 formed in a cylindrical shape, and has a sliding surface 2 that is a spherical surface on the outer periphery and an inner peripheral surface that is a cylindrical surface on the inner periphery. The inside of the inner peripheral surface of the inner ring 1 has a bearing hole 6 through which a support shaft (not shown) passes in the axial direction.
　内輪１は、図６Ａに示すように、軸方向の両側面がラジアル平面に平行な平面であり、それぞれの側面の間隔とされる軸幅Ｗ２は、外輪３のそれぞれの側面の間隔よりも広く形成されている（図５参照）。 As shown in FIG. 6A, the inner ring 1 is a plane in which both side surfaces in the axial direction are parallel to the radial plane, and the axial width W2 defined as the interval between the side surfaces is wider than the interval between the side surfaces of the outer ring 3. It is formed (see FIG. 5).
　内輪１は、これを構成する金属板２１の一端部２１ｂ、他端部２１ｃが相互に付き合わされている（図６Ｂ参照）。この突き合わせ部分において、内輪１の摺動面２は径方向の段差のない連続面となっている。 The inner ring 1 has one end 21b and the other end 21c of a metal plate 21 constituting the inner ring 1 attached to each other (see FIG. 6B). In this abutting portion, the sliding surface 2 of the inner ring 1 is a continuous surface having no radial step.
　内輪１は、アルミニウム合金、ステンレス鋼、鉄鋼などの帯状の金属板２１からなる。また、内輪１は、後述のように、金属板２１の一方の表面が幅方向の断面形状が円弧である凸面２１ａとなるように形成され、凸面２１ａが摺動面２となるように曲げ加工により円筒状に形成されたものである。 The inner ring 1 is composed of a strip-shaped metal plate 21 such as an aluminum alloy, stainless steel, or steel. Further, as will be described later, the inner ring 1 is formed so that one surface of the metal plate 21 becomes a convex surface 21a whose cross-sectional shape in the width direction is an arc, and the convex surface 21a becomes a sliding surface 2 Is formed in a cylindrical shape.
　外輪３は、外周面７が円筒面となり、かつ内周面４が径方向外向きに突出する凹状の球面となる金属製の筒状部材からなる。外輪３の内周面４は、径方向の断面形状が円弧をなしている。外輪３の内周面４の円弧は、内輪１の摺動面２の円弧に対して、同じまたはわずかに大きい曲率半径を有している。 The outer ring 3 is made of a metallic cylindrical member having an outer peripheral surface 7 that is a cylindrical surface and an inner peripheral surface 4 that is a concave spherical surface that protrudes radially outward. The inner peripheral surface 4 of the outer ring 3 has a circular cross section in the radial direction. The arc of the inner peripheral surface 4 of the outer ring 3 has the same or slightly larger radius of curvature than the arc of the sliding surface 2 of the inner ring 1.
　外輪３の材質は、特に限定されず、例えば、アルミニウム合金、ステンレス鋼、鉄鋼などの金属製や、合成樹脂製、セラミック製などを採用することができる。 The material of the outer ring 3 is not particularly limited, and for example, a metal such as an aluminum alloy, stainless steel, or steel, a synthetic resin, or a ceramic can be employed.
　以上のように第二の実施形態の球面滑り軸受２０は構成され、内輪１は、円筒状に形成される帯状の金属板２１の一方の表面が、凸面２１ａとなり、金属板２１の他方の表面が内周面となる。 As described above, the spherical plain bearing 20 of the second embodiment is configured, and in the inner ring 1, one surface of the strip-shaped metal plate 21 formed in a cylindrical shape becomes a convex surface 21 a, and the other surface of the metal plate 21. Is the inner surface.
　この内輪１の材料は、金属板２１の一方の表面に凸面２１ａを形成するための必要最小限の切削または研削加工等の仕上げ加工を行えばよく、内輪１の材料に対して、切削加工等により取り除く部分を減らすことが可能となり、材料の歩留りを向上させることができる。 The material of the inner ring 1 may be subjected to a finishing process such as a minimum necessary cutting or grinding process for forming the convex surface 21a on one surface of the metal plate 21. This makes it possible to reduce the portion to be removed and improve the material yield.
　次に、第二の実施形態の球面滑り軸受２０の製造方法を図面に基づいて説明する。図７Ａ、図７Ｂ、図８Ａ、図８Ｂは、球面滑り軸受２０の製造工程を示す図である。 Next, a method for manufacturing the spherical plain bearing 20 of the second embodiment will be described with reference to the drawings. 7A, FIG. 7B, FIG. 8A, and FIG. 8B are diagrams showing manufacturing steps of the spherical plain bearing 20.
　上記製造方法としては、まず、図７Ａに示すように、内輪１の軸幅Ｗ２と同じ幅寸法を有し、かつ、内輪１の内周面と摺動面２の最大外径部との間隔ａ２と同じ厚みを有する帯状の金属板２１を作成する。その帯状の金属板２１を、図６Ｂに示す内輪１の摺動面２の最大外径部での摺動面周長Ｌ３と同じ長さに切断する。 As the manufacturing method, first, as shown in FIG. 7A, the inner ring 1 has the same width as the axial width W2, and the distance between the inner peripheral surface of the inner ring 1 and the maximum outer diameter portion of the sliding surface 2 is as follows. A strip-shaped metal plate 21 having the same thickness as a2 is created. The strip-shaped metal plate 21 is cut to the same length as the sliding surface circumferential length L3 at the maximum outer diameter portion of the sliding surface 2 of the inner ring 1 shown in FIG. 6B.
　その後、図７Ｂに示すように、帯状の金属板２１を、長さ方向の一端部２１ｂおよび他端部２１ｃにおいて、一方の表面から他方の表面２１ｄへ向かって長さ方向内向きに角度θ２をもって傾斜する状態に切削加工をする。 After that, as shown in FIG. 7B, the band-shaped metal plate 21 is inclined inward in the length direction from one surface to the other surface 21d at one end 21b and the other end 21c in the length direction. Cutting in an inclined state.
　一端部２１ｂおよび他端部２１ｃでの角度θ２は、金属板２１の他方の表面２１ｄ側での長さを、図６Ｂに示す内輪１の内周面周長Ｌ４と同じ長さとすることで規定される。 The angle θ2 at the one end 21b and the other end 21c is defined by setting the length on the other surface 21d side of the metal plate 21 to the same length as the inner peripheral surface circumferential length L4 of the inner ring 1 shown in FIG. 6B. Is done.
　続いて、図８Ａに示すように、金属板２１の一方の表面に対して、鍛造加工により、幅方向の断面形状が円弧となるように凸面２１ａを形成する。 Subsequently, as shown in FIG. 8A, a convex surface 21a is formed on one surface of the metal plate 21 by forging so that the cross-sectional shape in the width direction becomes an arc.
　その後、図８Ｂに示すように、金属板２１を凸面２１ａが外側となる状態で一端部２１ｂおよび他端部２１ｃを相互に突き合わせて円筒状とする曲げ加工をする。 Thereafter, as shown in FIG. 8B, the metal plate 21 is bent into a cylindrical shape by abutting the one end 21b and the other end 21c with the convex surface 21a facing outward.
　曲げ加工の後、内輪１の一端部２１ｂおよび他端部２１ｃを突き合わせた状態で溶接により接合する。接合された内輪１の凸面２１ａを、外輪３の内周面４に沿う球面となるように仕上げ加工を行い、内輪１を形成する（図６Ｂ参照）。 After bending, the one end 21b and the other end 21c of the inner ring 1 are joined together by welding in a state where they are butted. The convex surface 21a of the joined inner ring 1 is finished so as to be a spherical surface along the inner circumferential surface 4 of the outer ring 3, thereby forming the inner ring 1 (see FIG. 6B).
　ここで、内輪１はその一端部２１ｂおよび他端部２１ｃが相互に突き合わされた状態となっている。その突き合わせ部分を含めた凸面２１ａの全周に仕上げ加工を施すことにより、内輪１の摺動面２は径方向の段差のない連続面となる。なお、上記仕上げ加工の代わりに、超仕上げ加工を行うことも可能であり、仕上げ加工後に超仕上げ加工を行ってもよい。 Here, the inner ring 1 is in a state where the one end 21b and the other end 21c are abutted against each other. By finishing the entire circumference of the convex surface 21a including the abutting portion, the sliding surface 2 of the inner ring 1 becomes a continuous surface without a step in the radial direction. Note that superfinishing can be performed instead of the finishing, and superfinishing may be performed after finishing.
　仕上げ加工後、外輪３の内周面４に内輪１の摺動面２を摺動させながら、外輪３の内側に内輪１を組み合わせる。この組み合わせにより、球面滑り軸受２０が構成される。 After finishing, the inner ring 1 is combined with the inner side of the outer ring 3 while sliding the sliding surface 2 of the inner ring 1 on the inner peripheral surface 4 of the outer ring 3. A spherical plain bearing 20 is configured by this combination.
　この内輪１の製造方法では、金属板２１の厚さは、内輪１の内周面と摺動面２の最大外径部との間隔ａ２と同じ厚みとしている。このような金属板２１に対して円筒状に曲げ加工を施すと、金属板２１の他方の表面２１ｄが内輪１の内周面となる。 In the manufacturing method of the inner ring 1, the thickness of the metal plate 21 is the same as the distance a <b> 2 between the inner peripheral surface of the inner ring 1 and the maximum outer diameter portion of the sliding surface 2. When such a metal plate 21 is bent into a cylindrical shape, the other surface 21 d of the metal plate 21 becomes the inner peripheral surface of the inner ring 1.
　このため、金属板２１の一方の表面に対して、凸面２１ａを形成するための必要最小限の切削または研削加工等の仕上げ加工を行えばよく、内輪１の材料となる金属板２１に対して切削加工等により取り除く部分を減らすことが可能となり、内輪１の材料の歩留りを向上させることができる。 For this reason, it is only necessary to perform a finishing process such as a minimum cutting or grinding process for forming the convex surface 21 a on one surface of the metal plate 21, and the metal plate 21 that is a material of the inner ring 1. It is possible to reduce a portion to be removed by cutting or the like, and the yield of the material of the inner ring 1 can be improved.
　なお、この実施形態の内輪１は、円筒状に形成された一本の帯状の金属板２１からなるものであるが、これに限られない。例えば、内輪１の変形例としては、図９に示すように、帯状の金属板２１を円弧状をなす三本の帯状分割体２２から形成し、それぞれの帯状分割体２２を円筒状となる状態で溶接により接合し、図１０に示す内輪１を構成することもできる。 In addition, although the inner ring | wheel 1 of this embodiment consists of the one strip | belt-shaped metal plate 21 formed in the cylindrical shape, it is not restricted to this. For example, as a modification of the inner ring 1, as shown in FIG. 9, a band-shaped metal plate 21 is formed from three band-shaped divided bodies 22 having an arc shape, and each band-shaped divided body 22 is in a cylindrical shape. The inner ring 1 shown in FIG. 10 can also be configured by joining together by welding.
　また、内輪１は、円筒状に形成された一本の帯状の金属板２１の一端部２１ｂと他端部２１ｃとが溶接により接合されるものであるが、接合の手段は溶接に限られない。例えば、図１１に示すように、内輪１が摺動面２の全周に形成された周溝１ａを有するものとしてもよい。この周溝１ａ内に巻き付けた固定バンド３０により、金属板２１の一端部２１ｂと他端部２１ｃとを接合することができる。 Further, in the inner ring 1, one end portion 21b and the other end portion 21c of a single band-shaped metal plate 21 formed in a cylindrical shape are joined by welding, but the joining means is not limited to welding. . For example, as shown in FIG. 11, the inner ring 1 may have a circumferential groove 1 a formed on the entire circumference of the sliding surface 2. The one end 21b and the other end 21c of the metal plate 21 can be joined by the fixed band 30 wound around the circumferential groove 1a.
　また、内輪１は、外周面の全面が摺動面２となっているが、これに限られない。例えば、内輪１の他の変形例としては、図１２Ａに示すように、摺動面２の軸方向両側に円筒面２３ａ、２３ａを有するものとしてもよい。この場合、図１２Ｂに示すように、金属板２１に、摺動面２となる凸面２１ａの全長にわたり幅方向外向きに突き出す突出部２３を一体に形成する。 Further, the inner ring 1 has a sliding surface 2 on the entire outer peripheral surface, but is not limited thereto. For example, as another modification of the inner ring 1, as shown in FIG. 12A, cylindrical surfaces 23a and 23a may be provided on both sides in the axial direction of the sliding surface 2. In this case, as shown in FIG. 12B, the metal plate 21 is integrally formed with a protruding portion 23 that protrudes outward in the width direction over the entire length of the convex surface 21 a that becomes the sliding surface 2.
　突出部２３を形成した金属板２１を円筒状に折り曲げ加工すると、ぞれぞれの突出部２３の外周面が円筒面２３ａ、２３ａとなる。円筒面２３ａは、摺動面２となる凸面２１ａよりも、径方向内側に位置している。これらの円筒面２３ａのそれぞれに、固定バンド３０を巻き付けることで、金属板２１の一端部２１ｂと他端部２１ｃとを相互に接合することができる。 When the metal plate 21 on which the protruding portions 23 are formed is bent into a cylindrical shape, the outer peripheral surfaces of the protruding portions 23 become cylindrical surfaces 23a and 23a. The cylindrical surface 23 a is located on the radially inner side with respect to the convex surface 21 a serving as the sliding surface 2. By winding the fixing band 30 around each of the cylindrical surfaces 23a, the one end 21b and the other end 21c of the metal plate 21 can be joined to each other.
１　内輪
１ａ　周溝
２　摺動面
３　外輪
４　内周面
５　外環部材
６　軸受孔
７　外周面
１０、２０　球面滑り軸受
１１、２１　金属板
１１ａ　凹面
１１ｂ、２１ｂ　一端部
１１ｃ、２１ｃ　他端部
１１ｄ、２１ｄ　他方の表面
２１ａ　凸面
２２　帯状分割体
２３　突出部
２３ａ　円筒面
３０　固定バンド
ａ１、ａ２　間隔
Ｌ１　外周面周長
Ｌ２　周長
Ｌ３　摺動面周長
Ｌ４　内周面周長
Ｗ１、Ｗ２　軸幅
θ１、θ２　角度 DESCRIPTION OF SYMBOLS 1 Inner ring 1a Circumferential groove 2 Sliding surface 3 Outer ring 4 Inner peripheral surface 5 Outer ring member 6 Bearing hole 7 Outer peripheral surface 10, 20 Spherical plain bearing 11, 21 Metal plate 11a Concave surface 11b, 21b One end part 11c, 21c The other end part 11d 21d The other surface 21a Convex surface 22 Strip-like divided body 23 Protruding portion 23a Cylindrical surface 30 Fixed band a1, a2 Distance L1 Peripheral length L2 Perimeter L3 Sliding surface perimeter L4 Inner peripheral perimeter W1, W2 Axial width θ1 , Θ2 angle

Claims (10)

  1. 　外周に球面の摺動面（２）を有する内輪（１）と、前記内輪（１）の摺動面（２）に摺接する内周面（４）を有する外輪（３）との組み合わせからなる球面滑り軸受（１０）であって、
    　前記外輪（３）は、円筒状に形成される帯状の金属板（１１）からなり、前記金属板（１１）は、一方の表面に幅方向の断面形状が円弧となる凹面（１１ａ）を有するものであり、前記一方の表面が前記外輪（３）の内周面（４）とされた球面滑り軸受。     It consists of a combination of an inner ring (1) having a spherical sliding surface (2) on the outer periphery and an outer ring (3) having an inner peripheral surface (4) in sliding contact with the sliding surface (2) of the inner ring (1). A spherical plain bearing (10),
    The outer ring (3) is composed of a strip-shaped metal plate (11) formed in a cylindrical shape, and the metal plate (11) has a concave surface (11a) whose cross-sectional shape in the width direction is an arc on one surface. A spherical plain bearing in which the one surface is an inner peripheral surface (4) of the outer ring (3).
  2. 　前記外輪（３）がその外周部に締まり嵌めにより嵌合される円筒状の外環部材（５）を備え、その外環部材（５）が嵌合された前記外輪（３）は、その一端部（１１ｂ）および他端部（１１ｃ）が相互に突き当たる状態となる請求項１に記載された球面滑り軸受。 The outer ring (3) includes a cylindrical outer ring member (5) fitted to the outer peripheral portion thereof by an interference fit, and the outer ring (3) fitted with the outer ring member (5) has one end thereof. The spherical plain bearing according to claim 1, wherein the portion (11b) and the other end portion (11c) are brought into contact with each other.
  3. 　外周に球面の摺動面（２）を有する内輪（１）と、前記内輪（１）の摺動面（２）に摺接する内周面（４）を有する外輪（３）とからなる球面滑り軸受の製造方法であって、
    　帯状の金属板（１１）の一方の表面に鍛造加工により幅方向の断面形状が円弧となるように凹面（１１ａ）を形成し、
    　前記金属板（１１）を前記凹面（１１ａ）が内側となる状態で、前記金属板（１１）の一端部（１１ｂ）と他端部（１１ｃ）を突き合わせて円筒状とする曲げ加工して、前記一方の表面を内周面（４）とする前記外輪（３）を形成し、
    　前記外輪（３）の外周部に外環部材（５）を締まり嵌めにより嵌め合わせ、
    　前記外輪（３）の凹面（１１ａ）を前記内輪（１）の摺動面（２）に沿う球面となるように仕上げ加工を施し、
    　前記外輪（３）を前記外環部材（５）から取り外し、
    　前記外輪（３）の内側に前記内輪（１）を組み合わせた球面滑り軸受の製造方法。     Spherical slip consisting of an inner ring (1) having a spherical sliding surface (2) on the outer periphery and an outer ring (3) having an inner peripheral surface (4) in sliding contact with the sliding surface (2) of the inner ring (1). A bearing manufacturing method comprising:
    A concave surface (11a) is formed on one surface of the strip-shaped metal plate (11) by forging so that the cross-sectional shape in the width direction is an arc,
    Bending the metal plate (11) into a cylindrical shape by abutting the one end (11b) and the other end (11c) of the metal plate (11) with the concave surface (11a) on the inside, Forming the outer ring (3) having the one surface as an inner peripheral surface (4);
    The outer ring member (5) is fitted to the outer periphery of the outer ring (3) by an interference fit,
    Finishing the concave surface (11a) of the outer ring (3) to be a spherical surface along the sliding surface (2) of the inner ring (1),
    Removing the outer ring (3) from the outer ring member (5);
    A method of manufacturing a spherical plain bearing in which the inner ring (1) is combined inside the outer ring (3).
  4. 　前記外輪（３）の外周部に前記外環部材（５）を締まり嵌めにより嵌め合わせ、前記外輪（３）の一端部（１１ｂ）および他端部（１１ｃ）を接合した請求項３に記載された球面滑り軸受の製造方法。 The outer ring member (5) is fitted to the outer periphery of the outer ring (3) by an interference fit, and one end (11b) and the other end (11c) of the outer ring (3) are joined. Of manufacturing spherical plain bearings.
  5. 　外周に球面の摺動面（２）を有する内輪（１）と、前記内輪（１）の摺動面（２）に摺接する内周面（４）を有する外輪（３）との組み合わせからなる球面滑り軸受（２０）であって、
    　前記内輪（１）は、円筒状に形成される帯状の金属板（２１）からなり、前記金属板（２１）は、一方の表面に幅方向の断面形状が円弧となる凸面（２１ａ）を有するものであり、前記一方の表面が前記内輪（１）の前記摺動面（２）とされた球面滑り軸受。     It consists of a combination of an inner ring (1) having a spherical sliding surface (2) on the outer periphery and an outer ring (3) having an inner peripheral surface (4) in sliding contact with the sliding surface (2) of the inner ring (1). A spherical plain bearing (20),
    The inner ring (1) includes a strip-shaped metal plate (21) formed in a cylindrical shape, and the metal plate (21) has a convex surface (21a) whose cross-sectional shape in the width direction is an arc on one surface. A spherical plain bearing in which the one surface is the sliding surface (2) of the inner ring (1).
  6. 　前記金属板（２１）は、円弧状をなす複数の帯状分割体（２２）が円筒状に接合されたものであり、前記それぞれの帯状分割体（２２）が、その一方の表面に前記凸面（２１ａ）を有する請求項５に記載された球面滑り軸受。 The metal plate (21) is formed by joining a plurality of strip-shaped divided bodies (22) having an arc shape in a cylindrical shape, and each of the strip-shaped divided bodies (22) has the convex surface ( Spherical plain bearing according to claim 5 having 21a).
  7. 　前記金属板（２１）が前記一方の表面において、前記凸面（２１ａ）の軸方向両側にその凸面（２１ａ）よりも径方向内側に位置する円筒面（２３ａ）を有する請求項５または６に記載された球面滑り軸受。 The said metal plate (21) has the cylindrical surface (23a) located in a radial inside rather than the convex surface (21a) in the axial direction both sides of the said convex surface (21a) in said one surface. Spherical plain bearing.
  8. 　前記内輪（１）がその凸面（２１ａ）に周溝（１ａ）を有する請求項５または６に記載された球面滑り軸受。 The spherical plain bearing according to claim 5 or 6, wherein the inner ring (1) has a circumferential groove (1a) on its convex surface (21a).
  9. 　外周に球面の摺動面（２）を有する内輪（１）と、前記内輪（１）の摺動面（２）に摺接する内周面（４）を有する外輪（３）とからなる球面滑り軸受の製造方法であって、
    　帯状の金属板（２１）の一方の表面に鍛造加工により幅方向の断面形状が円弧となるように凸面（２１ａ）を形成し、
    　前記金属板（２１）を前記凸面（２１ａ）が外側となる状態で、前記金属板（２１）の一端部（２１ｂ）と他端部（２１ｃ）を突き合わせて円筒状とする曲げ加工し、前記一方の表面を摺動面（２）とする前記内輪（１）を形成し、
    　前記内輪（１）の凸面（２１ａ）を前記外輪（３）の内周面（４）に沿う球面となるように仕上げ加工を施し、
    　前記外輪（３）の内側に前記内輪（１）を組み合わせた球面滑り軸受の製造方法。     Spherical slip consisting of an inner ring (1) having a spherical sliding surface (2) on the outer periphery and an outer ring (3) having an inner peripheral surface (4) in sliding contact with the sliding surface (2) of the inner ring (1). A bearing manufacturing method comprising:
    A convex surface (21a) is formed on one surface of the belt-shaped metal plate (21) so that the cross-sectional shape in the width direction is an arc by forging,
    Bending the metal plate (21) into a cylindrical shape by abutting one end (21b) and the other end (21c) of the metal plate (21c) with the convex surface (21a) on the outside, Forming the inner ring (1) having one surface as a sliding surface (2);
    Finishing the convex surface (21a) of the inner ring (1) to be a spherical surface along the inner peripheral surface (4) of the outer ring (3),
    A method of manufacturing a spherical plain bearing in which the inner ring (1) is combined inside the outer ring (3).
  10. 　前記曲げ加工の前に、前記帯状の金属板（２１）の両端部（２１ｂ、２１ｃ）を前記一方の表面から他方の表面（２１ｄ）に向かって長さ方向内向きに傾斜する状態に形成する請求項９に記載された球面滑り軸受の製造方法。 Before the bending process, both end portions (21b, 21c) of the strip-shaped metal plate (21) are formed so as to be inclined inward in the longitudinal direction from the one surface to the other surface (21d). A method for manufacturing a spherical plain bearing according to claim 9.
PCT/JP2018/016991 2017-04-28 2018-04-26 Spherical sliding bearing and method for manufacturing same WO2018199232A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112128238A (en) * 2020-09-25 2020-12-25 无锡优尼福科技有限公司 Joint bearing and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452415A (en) * 1966-11-25 1969-07-01 Glacier Metal Co Ltd Method of making a joint of the ball and socket type
US3526940A (en) * 1968-06-26 1970-09-08 Glacier Metal Co Ltd Method of manufacturing a joint of the ball and socket type
GB1310984A (en) * 1969-08-20 1973-03-21 Elges H Self-aligning bearing
JPH0596545U (en) * 1992-05-29 1993-12-27 エヌティエヌ株式会社 Spherical bearing
JP2000027854A (en) * 1998-05-15 2000-01-25 Rexnord Corp Diametrally divided composite spherical bearing and manufacture therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452415A (en) * 1966-11-25 1969-07-01 Glacier Metal Co Ltd Method of making a joint of the ball and socket type
US3526940A (en) * 1968-06-26 1970-09-08 Glacier Metal Co Ltd Method of manufacturing a joint of the ball and socket type
GB1310984A (en) * 1969-08-20 1973-03-21 Elges H Self-aligning bearing
JPH0596545U (en) * 1992-05-29 1993-12-27 エヌティエヌ株式会社 Spherical bearing
JP2000027854A (en) * 1998-05-15 2000-01-25 Rexnord Corp Diametrally divided composite spherical bearing and manufacture therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112128238A (en) * 2020-09-25 2020-12-25 无锡优尼福科技有限公司 Joint bearing and preparation method thereof

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