WO2021235021A1 - Method for manufacturing retainer for self-aligning roller bearing - Google Patents

Method for manufacturing retainer for self-aligning roller bearing Download PDF

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Publication number
WO2021235021A1
WO2021235021A1 PCT/JP2021/004437 JP2021004437W WO2021235021A1 WO 2021235021 A1 WO2021235021 A1 WO 2021235021A1 JP 2021004437 W JP2021004437 W JP 2021004437W WO 2021235021 A1 WO2021235021 A1 WO 2021235021A1
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WO
WIPO (PCT)
Prior art keywords
cage
row
concave
convex
diameter side
Prior art date
Application number
PCT/JP2021/004437
Other languages
French (fr)
Japanese (ja)
Inventor
廣幸 前田
康樹 薮林
Original Assignee
中西金属工業株式会社
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Publication of WO2021235021A1 publication Critical patent/WO2021235021A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • B21D53/12—Making other particular articles parts of bearings; sleeves; valve seats or the like cages for bearings
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • 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
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles

Definitions

  • the present invention relates to a method for manufacturing a cage used for a self-aligning roller bearing.
  • Self-aligning roller bearings can carry radial loads and axial loads in both directions with a single bearing, and because they have a particularly large radial load capacity, they are suitable for places where heavy loads and impact loads are applied. It is used for the drive unit and axles of.
  • a cage using two cages for individually guiding the two rows of rollers for each row guides both of the two rows of rollers.
  • an integrated cage see, for example, Patent Document 2.
  • Cages such as these are generally manufactured by press working from metal plates such as steel plates and brass plates.
  • a cage for self-aligning roller bearings as in Patent Document 1 guides two rows of roller rows individually by two separate cages, so that when a load is applied to one of the roller rows, one of them is used.
  • the load may not be transmitted from one of the cages to the other cage and the other roller row and cage may not rotate.
  • the size of the cage that can be molded by press working is limited.
  • the integrated cage that guides both rows of rollers is a press machine and a die. Therefore, the size of the cage is limited to the extent that the pocket holes and pillars can be formed by press working.
  • the present invention provides a cage for self-aligning roller bearings, which has good bearing assembly workability without causing roller skew or fretting and shortening the bearing life, without limiting the size of the cage. Moreover, it is an object of the present invention to provide a method of molding by press working without increasing the processing cost.
  • the gist of the present invention is as follows.
  • a method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers The cage is It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other.
  • the engagement depth of the portion is made larger than the axial gap of the bearing. It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
  • the manufacturing method is Including a press working step of forming the single row cage from a metal plate by press working.
  • a step after the bowl-shaped forming step of erecting the large-diameter side portion of the side wall of the single-row cage in the press working step the uneven engagement portion with respect to the portion to be the large-diameter side end face.
  • the concave portion or the convex portion is formed. How to manufacture a cage for self-aligning roller bearings.
  • a method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers The cage is It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other.
  • the engagement depth of the portion is made larger than the axial gap of the bearing. It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
  • the manufacturing method is Including a press working step of forming the single row cage from a metal plate by press working.
  • a step prior to the bowl-shaped forming process of erecting the large-diameter side portion of the side wall of the single-row cage in the press working process the uneven engagement portion with respect to the portion to be the large-diameter side end face. It is characterized in that a concave-convex portion that becomes a concave portion, a concave portion that becomes the concave portion, or a convex portion that becomes the convex portion is formed. How to manufacture a cage for self-aligning roller bearings.
  • the pair of single row cages has the same shape.
  • the cage for self-aligning roller bearings targeted by the manufacturing method of the present invention comprises a pair of single row cages that guide two rows of roller rows for each row.
  • the single row cage has a concave-convex engaging portion having an engaging depth larger than the axial clearance of the self-aligning roller bearing on its large-diameter side end surface. Then, it is used in a state where the uneven engaging portions of the pair of single row cages are engaged with each other.
  • the pair of single-row cages are provided with a concave portion on the large-diameter side end surface of one of the single-row cages and a convex portion on the large-diameter side end surface of the other single-row cage.
  • the engagement depth of the concave-convex engaging portion with which the convex portion engages is made larger than the axial gap of the bearing. Then, it is used in a state where the concave portion and the convex portion are engaged with each other.
  • the manufacturing method of the present invention includes a press working step of forming the single row cage from a metal plate by press working. Then, in a step after the bowl-shaped forming process of erecting the large-diameter side portion of the side wall of the single-row cage in the press working process, the uneven engagement with the portion to be the large-diameter side end face. A portion, or the concave portion or the convex portion is formed. Alternatively, in a process prior to the bowl-shaped molding process, the concave-convex portion that becomes the concave-convex engaging portion, or the concave portion or the convex portion that becomes the concave portion is formed with respect to the portion that becomes the large-diameter side end face. Form a convex part.
  • the single-row cage is press-processed instead of the integrated cage that guides both of the two rows of rollers as in Patent Document 2. Mold.
  • the single-row cage does not interfere with the press and the die, so that the size of the cage that can be formed by press working is not limited.
  • a mold is used as in the case of forming an integrated cage that guides both two rows of roller rows as in Patent Document 2 by press working. The structure is not complicated and the number of processing steps is reduced. Therefore, according to the manufacturing method of the present invention, the processing cost can be reduced and the shape accuracy is improved.
  • the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, and the concave-convex engaging portion is used. It has a larger engagement depth than the axial clearance of the bearing.
  • the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave portion of one of the single row cages and the convex portion of the other single row cage are engaged with each other.
  • the concave-convex engaging portion with which the concave portion and the convex portion engage has an engagement depth larger than the axial gap of the bearing.
  • the pair of single row cages becomes one in use. That is, when a load is applied to one roller row, the load is transmitted from one of the single row cages to the other single row cage, and one roller row and the single row cage and the other roller row are transmitted. And the single row cage rotates as one. Therefore, the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention can equalize the rotation (revolution) of both roller rows. As a result, the self-aligning roller bearing cage causes a problem in the configuration of Patent Document 1 in which two rows of roller bearings are guided by two separate cages, that is, roller skewing and fretting occur. There is no problem that the life of the bearing is shortened.
  • the cage for the self-aligning roller bearing manufactured by the manufacturing method of the present invention is composed of the pair of the single row cages, the cage is elastically deformed when the self-aligning roller bearing is assembled. As it does not need to be inserted, assembly workability is good.
  • FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages.
  • the direction of the rotation axis J (see FIG. 4A) of the self-aligning roller bearing 10 is "axial direction”
  • the direction orthogonal to the axis direction is “diametrical direction”
  • the roller row C1 or The direction in which the rollers 13 are lined up at C2 (see FIGS. 4A and 4B) is referred to as "circumferential direction”.
  • the self-aligning roller bearing cage 1 manufactured by the manufacturing method according to the embodiment of the present invention includes a pair of single row cages 2A. It consists of 2B.
  • the pair of single row cages 2A and 2B have, for example, the same shape, but may have different shapes. However, by making the pair of single row cages 2A and 2B the same shape, it is possible to reduce the manufacturing cost, the parts management cost, and the like.
  • the single-row cages 2A and 2B have a shape in which a large-diameter ring portion 3 and a small-diameter ring portion 4 separated in the axial direction are connected by a plurality of pillar portions 5.
  • a plurality of pocket holes P for accommodating spherical rollers 13 are formed at equal intervals in the circumferential direction.
  • the single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end surface 3A.
  • the side surface of the pillar portion 5 on the pocket hole P side is composed of a guide surface 6, a retaining convex portion 7, and a recessed portion 8.
  • the concave portion 8 inward in the radial direction of the retaining convex portion 7 interferes with the spherical roller 13 (see, for example, FIGS. 3 and 4A) when the retaining convex portion 7 extends inward in the radial direction. It is provided to avoid interference with 13.
  • the self-aligning roller bearing 10 has two rows of roller rows C1 and C2 in the circumferential direction, and has an outer ring. It has a structure in which a barrel-shaped spherical roller 13 is incorporated as a rolling element between the 11 and the inner ring 12.
  • the track 11A of the outer ring 11 is a spherical surface
  • the track 12A of the inner ring 12 is a double row. Since the center of curvature of the track 11A of the outer ring 11 and the center of the bearing coincide with each other, the self-aligning roller bearing 10 has self-alignment property with respect to the inclination of the shaft.
  • the single row cage 2A of the cage 1 guides the roller row C1
  • the single row cage 2B of the cage 1 guides the roller row C2.
  • the cage 1 is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other.
  • the concave-convex engaging portion A has, for example, a rectangular wavy shape as shown in (a) and a substantially rectangular wavy shape obtained by chamfering the corners of the rectangular convex portion as shown in (b). It has a trapezoidal wavy shape such as c), a sine wavy shape such as (d), a rounded rectangular wavy shape such as (e), and the like, and when these shapes are used, they have a repeating shape in the circumferential direction.
  • the engagement depth D shown in FIG. 5 is from the axial gap of the self-aligning roller bearing 10 in order to reliably engage the uneven engagement portions A of the pair of single row cages 2A and 2B in the used state. Also needs to be large.
  • the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B may have the same shape or different shapes. However, if the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B have the same shape, and the pair of single-row cages 2A and 2B have the same shape, the above-mentioned As you can see, manufacturing costs, parts management costs, etc. can be reduced.
  • the roller rows C1 and C2 in a state where the concave-convex engaging portions A of the single row cages 2A and 2B are engaged with each other may be out of phase as shown in the enlarged expansion view of the main part of FIG. 6A.
  • the phases may be the same as shown in the enlarged development view of the main part.
  • the period of the repeating shape in the circumferential direction of the uneven engagement portion A is shorter than the period of the pocket hole P, and the uneven engagement portion A having the same shape has the same shape. It is also easy to make it possible to change the form in which the phases are different as shown in FIG. 7A and the form in which the phases are the same as shown in FIG. 7B.
  • the uneven engagement portion A is not limited to the repeating shape in the circumferential direction. That is, it is not always necessary to provide both unevenness on each of the pair of single row cages 2A and 2B.
  • one of the pair of single row cages 2A and 2B may be provided with a concave portion and the other may be provided with a convex portion to form the concave-convex engaging portion A.
  • the pair of single row cages 2A and 2B have a concave portion on the large diameter side end surface 3A of one single row cage and a convex portion on the large diameter side end surface 3A of the other single row cage. ..
  • one recess A1 is provided on the large diameter side end surface of one single row cage 2A, and the other single row cage 2B is provided.
  • An example is shown in which one convex portion A2 is provided on the end surface on the large diameter side to form the concave-convex engaging portion A.
  • the single row cage 2A may be provided with only two or more concave portions A1 and the single row cage 2B may be provided with only two or more convex portions A2.
  • the method for manufacturing the cage 1 for self-aligning roller bearings includes a press working step of forming single row cages 2A and 2B from a metal plate by press working.
  • a press working step of forming single row cages 2A and 2B from a metal plate by press working.
  • a soft nitriding treatment, a phosphate coating treatment, or the like may be performed, if necessary.
  • a processing step for forming into a bowl shape as shown in (b) is performed.
  • the processing steps for forming the bowl shape are (1) one or more drawing processes and (2) the upper part of the side wall for forming the shape after drawing into a bowl shape. It consists of a bowl-shaped molding process for erecting a certain large-diameter side portion G.
  • the pocket hole processing step of forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing step. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing step.
  • the uneven engagement portion processing step of forming the concave-convex engaging portion A on the portion to be the large-diameter side end surface 3A as in (e) is performed.
  • the concave-convex engaging portion A is formed by punching the cages 2A and 2B from the radial direction.
  • an inner diameter punching process for forming the inner diameter side of the small diameter ring portion 4 was performed.
  • the portion that becomes the large-diameter side end face 3A is To form the concave-convex engaging portion A.
  • the uneven engagement portion A is formed in the uneven engagement portion processing step (e), which is the final step of the press working, but other than the final step of the press working.
  • the uneven engagement portion A may be formed in the process.
  • the concave-convex engaging portion A may be formed by punching out the portions of the cages 2A and 2B that become the large-diameter side end faces 3A by simultaneous processing.
  • a processing step for forming into a bowl-shaped shape in which the concave-convex engaging portion A is formed in the portion to be the large-diameter side end surface 3A as in (b) is performed.
  • the processing steps for forming the bowl shape are (1) one or more drawing processes and (2) unevenness that becomes the uneven engagement portion A with respect to the portion that becomes the large diameter side end surface 3A. It consists of a punching process for punching and forming a portion, and (3) a bowl-shaped forming process for erecting a large-diameter side portion G, which is the upper part of the side wall, for forming the shape after drawing into a bowl shape. ..
  • the punching process for punching and forming the uneven portion to be the concave-convex engaging portion A with respect to the portion to be the large-diameter side end surface 3A may be, for example, simultaneously with the drawing process, or as a separate step, the drawing process. It may be performed between the step and the bowl-shaped forming process, or when the drawing process is performed a plurality of times in the drawing process, it may be performed between the drawing process and the drawing process in the drawing process. That is, in the process prior to the bowl-shaped forming process, the uneven portion that becomes the concave-convex engaging portion A is formed with respect to the portion that becomes the large-diameter side end face 3A.
  • the pocket hole processing for forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing.
  • the concave-convex engaging portion A is formed with respect to the portion to be the large-diameter side end surface 3A in the step before the bowl-shaped forming process of the press working step. Form uneven parts.
  • a blank processing step of punching out the blank material B2 of the metal plate is performed as in (a).
  • the blank material B2 has a shape in which an uneven portion E is provided on the outer periphery of the disk.
  • the portion 9 that becomes the large-diameter side end surface 3A is the outer peripheral surface F of the blank material B2.
  • the concavo-convex portion E becomes the concavo-convex engaging portion A of the single row cages 2A and 2B.
  • a processing step for forming into a bowl shape as shown in (b) is performed.
  • the processing for forming the bowl shape is (1) one or more drawing steps, and (2) a large diameter which is the upper part of the side wall for forming the shape after drawing into a bowl shape. It consists of a bowl-shaped molding process for raising the side portion G.
  • the pocket hole processing step of forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing.
  • the portion 9 that becomes the large diameter side end surface 3A in the blank processing step (a) prior to the bowl-shaped forming processing step of the press processing step.
  • the uneven portion E that becomes the concave-convex engaging portion A is formed.
  • the press working step there is the blank processing step, and the blank materials B1 and B2 of the metal plate are used.
  • the press working step of forming the single row cages 2A and 2B from the metal plate by the press working in the manufacturing method of the present invention is not limited to the one using the blank material of the metal plate. That is, in the press working step, the blanking step of using the blank material of the metal plate may be eliminated, and the cutting and drawing step of cutting and drawing the metal plate material at the same time may be performed.
  • the formation of the concave-convex engaging portion A is a bowl-shaped forming process in which the large-diameter side portion G of the side wall of the single-row cages 2A and 2B in the press processing process is erected. It is performed in a process after the process.
  • the formation of the concavo-convex portion to be the concavo-convex engaging portion A includes a step prior to the bowl-shaped forming process in the press working step (including a processing step of forming the uneven portion performed at the same time as the cutting and drawing process). ).
  • the concave portion A1 or the convex portion A2 is formed in the portion to be the large-diameter side end surface 3A. Perform the forming step.
  • the large-diameter side end surface 3A is used.
  • a step of forming a concave portion to be a concave portion A1 or a convex portion to be a convex portion A2 is performed with respect to the portion to be formed.
  • the self-aligning roller bearing cage 1 targeted by the manufacturing method of the present invention comprises a pair of single row cages 2A and 2B that guide the two rows of roller rows C1 and C2 for each row.
  • the single row cages 2A and 2B have a concave-convex engaging portion A having an engaging depth D larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other.
  • the pair of single-row cages 2A and 2B are provided with a recess A1 on the large-diameter side end surface 3A of one single-row cage 2A, and a convex portion A2 on the large-diameter side end surface 3A of the other single-row cage 2B.
  • the engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 are engaged is made larger than the axial gap of the self-aligning roller bearing 10. Then, it is used in a state where the concave portion A1 and the convex portion A2 are engaged with each other.
  • the manufacturing method of the present invention includes a press working step of forming single row cages 2A and 2B from a metal plate by press working. Then, in a step after the bowl-shaped forming process of the press working step, the concave-convex engaging portion A, the concave portion A1 or the convex portion A2 is formed with respect to the portion to be the large-diameter side end surface 3A.
  • a convex portion to be a portion A2 is formed.
  • the single row cages 2A and 2B are pressed without forming the integrated cage that guides both the two rows of roller rows by press working as in Patent Document 2. Mold by processing. As a result, the single row cages 2A and 2B do not interfere with the press machine and the die, so that the size of the cage that can be formed by press working is not limited.
  • the single row cages 2A and 2B are molded by press working, as in the case of molding an integrated cage that guides both of the two rows of roller rows as in Patent Document 2, by stamping.
  • the mold structure is not complicated and the number of processing steps is reduced. Therefore, according to the manufacturing method of the present invention, the processing cost can be reduced and the shape accuracy is improved.
  • the cage 1 for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other, and the concave-convex engagement is performed.
  • the portion A has an engagement depth D larger than the axial gap of the bearing 10.
  • the self-aligning roller bearing cage 1 manufactured by the manufacturing method of the present invention the concave portion A1 of one single row cage 2A and the convex portion A2 of the other single row cage 2B are engaged with each other.
  • the concave-convex engaging portion A to which the concave portion A1 and the convex portion A2 are engaged has an engagement depth D larger than the axial gap of the bearing 10.
  • the pair of single row cages 2A and 2B are integrated in use. That is, when a load is applied to one roller row C1, the load is transmitted from one single row cage 2A to the other single row cage 2B, and one roller row C1 and the single row cage 2A and the other The roller row C2 and the single row cage 2B rotate together. Therefore, the self-aligning roller bearing cage 1 manufactured by the manufacturing method of the present invention can equalize the rotation (revolution) of both roller rows C1 and C2. As a result, the cage 1 causes a problem in the configuration of Patent Document 1 in which the two rows of roller rows C1 and C2 are guided by two separate cages, that is, roller skew and fretting occur, and the bearing life occurs. Does not occur.
  • the cage 1 for the self-aligning roller bearing manufactured by the manufacturing method of the present invention is composed of a pair of single-row cages 2A and 2B, the cage 1 is used when assembling the self-aligning roller bearing 10. Assembling workability is good because it is not necessary to insert the bearing while elastically deforming it.

Abstract

[Problem] To shape a retainer for a self-aligning roller bearing by means of stamping without limitation on the size of the retainer and without an increase in machining cost, the retainer providing better assembly workability for the bearing without reducing the life of the bearing. [Solution] A retainer (1) for a self-aligning roller bearing comprises a pair of single-row retainers (2A), (2B) that each guide one of two rows of rollers. The single-row retainers (2A), (2B) have, on a large-diameter-side end surface (3A), an indented engagement part (A) having an engagement depth larger than an axial gap of the bearing. A method for manufacturing the retainer (1) includes a stamping step for shaping a metal plate into the single-row retainers (2A), (2B) by means of stamping. In a step subsequent to a bowl-shape forming step for standing a large-diameter-side part of a side wall of the single-row retainers (2A), (2B), the indented engagement part A is formed on a part that becomes the large-diameter-side end surface (3A). Alternatively, in a step prior to the bowl-shape forming step, an indented part that becomes the indented engagement part (A) is formed on a part that becomes the large-diameter-side end surface (3A).

Description

自動調心ころ軸受用保持器の製造方法Manufacturing method of cage for self-aligning roller bearings
　本発明は、自動調心ころ軸受に用いる保持器の製造方法に関する。 The present invention relates to a method for manufacturing a cage used for a self-aligning roller bearing.
　球面軌道の外輪と複列軌道の内輪との間に転動体として樽状の球面ころを組み込んだ構造を有し、外輪軌道面の曲率中心が軸受中心と一致しているため軸の傾きに対して自動調心性を持つ自動調心ころ軸受がある（例えば、特許文献１及び２参照）。 It has a structure in which a barrel-shaped spherical roller is incorporated as a rolling element between the outer ring of the spherical orbit and the inner ring of the double-row orbit, and the center of curvature of the outer ring orbit surface coincides with the bearing center, so that the inclination of the shaft is increased. There are self-aligning roller bearings with self-alignment (see, for example, Patent Documents 1 and 2).
　自動調心ころ軸受は、１個の軸受でラジアル荷重及び両方向のアキシアル荷重を負荷でき、特にラジアル負荷能力が大きいことから、重荷重や衝撃荷重のかかる使用箇所に適しているため、各種機械装置の駆動部や車軸等に用いられる。 Self-aligning roller bearings can carry radial loads and axial loads in both directions with a single bearing, and because they have a particularly large radial load capacity, they are suitable for places where heavy loads and impact loads are applied. It is used for the drive unit and axles of.
　前記球面ころを案内する保持器として、２列のころ列を各列ごとに個別に案内する２個の保持器を用いるもの（例えば、特許文献１参照）、２列のころ列の両方を案内する一体型の保持器を用いるもの（例えば、特許文献２参照）がある。 As the cage for guiding the spherical rollers, a cage using two cages for individually guiding the two rows of rollers for each row (see, for example, Patent Document 1) guides both of the two rows of rollers. There is one that uses an integrated cage (see, for example, Patent Document 2).
　これらのような保持器は、鋼板や黄銅板等の金属板からプレス加工により製造されるのが一般的である。 Cages such as these are generally manufactured by press working from metal plates such as steel plates and brass plates.
特開２００１－１４０８７５号公報Japanese Unexamined Patent Publication No. 2001-140875 特許第６３３７４８２号公報Japanese Patent No. 6337482
　特許文献１のような自動調心ころ軸受用保持器は、２列のころ列を別体の２個の保持器で個別に案内するので、一方のころ列に負荷がかかった際に、一方の保持器から他方の保持器への負荷の伝達がされず、他方のころ列及び保持器が回転しない場合がある。それにより、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題がある。 A cage for self-aligning roller bearings as in Patent Document 1 guides two rows of roller rows individually by two separate cages, so that when a load is applied to one of the roller rows, one of them is used. The load may not be transmitted from one of the cages to the other cage and the other roller row and cage may not rotate. As a result, there is a problem that skewing and fretting of rollers occur and the life of the bearing is shortened.
　特許文献２のような自動調心ころ軸受用保持器は、２列のころ列の両方を案内する一体型であるので、特許文献１のように２列のころ列を別体の２個の保持器で案内することに基づく前記問題は生じない。しかしながら、このような一体型の保持器は、軸受の組立や保持器の成形について、以下の（１）ないし（３）のような問題がある。 Since the cage for self-aligning roller bearings as in Patent Document 2 is an integrated type that guides both of the two rows of roller rows, two rows of roller rows are separated as in Patent Document 1. The problem based on guiding with a cage does not occur. However, such an integrated cage has the following problems (1) to (3) in terms of bearing assembly and cage molding.
（１）軸受の組立作業性が悪いこと
　軸受を組み立てる際に、ころ列の一方は、全箇所のころについて、保持器を弾性変形させながら挿入する必要があるので、組立作業性が悪い。 (1) Poor bearing assembly workability When assembling a bearing, it is necessary to insert the cage while elastically deforming one of the rollers at all points, so the assembly workability is poor.
（２）プレス加工で成形できる保持器のサイズが限定されること
　２列のころ列の両方を案内する一体型の保持器が、ころを収容するポケット孔の成形工程において、プレス機及び金型と干渉するため、プレス加工によるポケット孔及び柱部の成形が可能な範囲に保持器のサイズに限定される。 (2) The size of the cage that can be molded by press working is limited. In the process of forming the pocket hole that accommodates the rollers, the integrated cage that guides both rows of rollers is a press machine and a die. Therefore, the size of the cage is limited to the extent that the pocket holes and pillars can be formed by press working.
（３）プレス加工による成形が難しく加工コストが増大すること
　２列のころ列の両方を案内する一体型の保持器のカップ形状をプレス加工で成形する場合、絞り加工と縁部の折り曲げ加工を複数回行う成形が必要であるため、金型構造が複雑となるとともに加工工程が多くなる。それにより、加工コストが増大する。また、プレス加工による板厚の増減等を考慮すると、カップ形状の精度を確保することが困難である。 (3) Forming by press working is difficult and processing cost increases. When forming the cup shape of an integrated cage that guides both two rows of rollers by press working, drawing and bending the edges are required. Since molding to be performed multiple times is required, the mold structure becomes complicated and the number of processing steps increases. As a result, the processing cost increases. Further, it is difficult to secure the accuracy of the cup shape in consideration of the increase / decrease in the plate thickness due to the press working.
　本発明は、ころのスキューやフレッティングが生じて軸受の寿命が低下することなく、軸受の組立作業性が良い自動調心ころ軸受用保持器を、保持器のサイズが限定されることなく、且つ加工コストが増大することなく、プレス加工により成形する方法を提供すること目的とする。 The present invention provides a cage for self-aligning roller bearings, which has good bearing assembly workability without causing roller skew or fretting and shortening the bearing life, without limiting the size of the cage. Moreover, it is an object of the present invention to provide a method of molding by press working without increasing the processing cost.
　本発明の要旨は以下の通りである。 The gist of the present invention is as follows.
　〔１〕
　２列のころ列を有する自動調心ころ軸受に用いる保持器の製造方法であって、
　前記保持器は、
　　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
　前記単列保持器は、
　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用し、
　前記製造方法は、
　　金属板からプレス加工で前記単列保持器を成形するプレス加工工程を含み、
　　前記プレス加工工程内の前記単列保持器の側壁の大径側部分を起立させる椀型成形加工工程よりも後の工程で、前記大径側端面になる部分に対して前記凹凸係合部、又は、前記凹部若しくは前記凸部を形成することを特徴とする、
自動調心ころ軸受用保持器の製造方法。 [1]
A method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers.
The cage is
It consists of a pair of single row cages that guide the two rows of rollers for each row.
The single row cage is
The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
The manufacturing method is
Including a press working step of forming the single row cage from a metal plate by press working.
In a step after the bowl-shaped forming step of erecting the large-diameter side portion of the side wall of the single-row cage in the press working step, the uneven engagement portion with respect to the portion to be the large-diameter side end face. Alternatively, the concave portion or the convex portion is formed.
How to manufacture a cage for self-aligning roller bearings.
　〔２〕
　２列のころ列を有する自動調心ころ軸受に用いる保持器の製造方法であって、
　前記保持器は、
　　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
　前記単列保持器は、
　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用し、
　前記製造方法は、
　　金属板からプレス加工で前記単列保持器を成形するプレス加工工程を含み、
　　前記プレス加工工程内の前記単列保持器の側壁の大径側部分を起立させる椀型成形加工工程よりも前の工程で、前記大径側端面になる部分に対して、前記凹凸係合部になる凹凸部、又は、前記凹部になる凹部若しくは前記凸部になる凸部を形成することを特徴とする、
自動調心ころ軸受用保持器の製造方法。 [2]
A method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers.
The cage is
It consists of a pair of single row cages that guide the two rows of rollers for each row.
The single row cage is
The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
The manufacturing method is
Including a press working step of forming the single row cage from a metal plate by press working.
In a step prior to the bowl-shaped forming process of erecting the large-diameter side portion of the side wall of the single-row cage in the press working process, the uneven engagement portion with respect to the portion to be the large-diameter side end face. It is characterized in that a concave-convex portion that becomes a concave portion, a concave portion that becomes the concave portion, or a convex portion that becomes the convex portion is formed.
How to manufacture a cage for self-aligning roller bearings.
　〔３〕
　一対の前記単列保持器は、同一形状である、
〔１〕又は〔２〕に記載の自動調心ころ軸受用保持器の製造方法。 [3]
The pair of single row cages has the same shape.
The method for manufacturing a cage for a self-aligning roller bearing according to [1] or [2].
　本発明の製造方法が対象とする自動調心ころ軸受用保持器は、前記のとおり、２列のころ列を各列ごとに案内する一対の単列保持器からなる。前記単列保持器は、その大径側端面に、自動調心ころ軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を有する。そして、一対の前記単列保持器の前記凹凸係合部同士を係合させた状態で使用する。あるいは、前記一対の単列保持器は、一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくしている。そして、前記凹部及び前記凸部を係合させた状態で使用する。 As described above, the cage for self-aligning roller bearings targeted by the manufacturing method of the present invention comprises a pair of single row cages that guide two rows of roller rows for each row. The single row cage has a concave-convex engaging portion having an engaging depth larger than the axial clearance of the self-aligning roller bearing on its large-diameter side end surface. Then, it is used in a state where the uneven engaging portions of the pair of single row cages are engaged with each other. Alternatively, the pair of single-row cages are provided with a concave portion on the large-diameter side end surface of one of the single-row cages and a convex portion on the large-diameter side end surface of the other single-row cage. The engagement depth of the concave-convex engaging portion with which the convex portion engages is made larger than the axial gap of the bearing. Then, it is used in a state where the concave portion and the convex portion are engaged with each other.
　本発明の製造方法は、金属板からプレス加工で前記単列保持器を成形するプレス加工工程を含む。そして、前記プレス加工工程内の前記単列保持器の側壁の大径側部分を起立させる椀型成形加工工程よりも後の工程で、前記大径側端面になる部分に対して前記凹凸係合部、又は、前記凹部若しくは前記凸部を形成する。あるいは、前記椀型成形加工工程よりも前の工程で、前記大径側端面になる部分に対して、前記凹凸係合部になる凹凸部、又は、前記凹部になる凹部若しくは前記凸部になる凸部を形成する。 The manufacturing method of the present invention includes a press working step of forming the single row cage from a metal plate by press working. Then, in a step after the bowl-shaped forming process of erecting the large-diameter side portion of the side wall of the single-row cage in the press working process, the uneven engagement with the portion to be the large-diameter side end face. A portion, or the concave portion or the convex portion is formed. Alternatively, in a process prior to the bowl-shaped molding process, the concave-convex portion that becomes the concave-convex engaging portion, or the concave portion or the convex portion that becomes the concave portion is formed with respect to the portion that becomes the large-diameter side end face. Form a convex part.
　このように、本発明の製造方法は、特許文献２のように２列のころ列の両方を案内する一体型の保持器をプレス加工で成形せずに、前記単列保持器をプレス加工で成形する。それにより、前記単列保持器はプレス機及び金型と干渉しないため、プレス加工で成形できる保持器のサイズが限定されない。その上、前記単列保持器をプレス加工で成形することから、特許文献２のような２列のころ列の両方を案内する一体型の保持器をプレス加工で成形する場合のように金型構造が複雑にならず、加工工程も少なくなる。したがって、本発明の製造方法によれば、加工コストを低減できるとともに、形状精度が高くなる。 As described above, in the manufacturing method of the present invention, the single-row cage is press-processed instead of the integrated cage that guides both of the two rows of rollers as in Patent Document 2. Mold. As a result, the single-row cage does not interfere with the press and the die, so that the size of the cage that can be formed by press working is not limited. Further, since the single-row cage is formed by press working, a mold is used as in the case of forming an integrated cage that guides both two rows of roller rows as in Patent Document 2 by press working. The structure is not complicated and the number of processing steps is reduced. Therefore, according to the manufacturing method of the present invention, the processing cost can be reduced and the shape accuracy is improved.
　また、本発明の製造方法で製造した自動調心ころ軸受用保持器は、一対の前記単列保持器の前記凹凸係合部同士を係合させた状態で使用し、前記凹凸係合部は軸受の軸方向隙間よりも大きい係合深さを有する。あるいは、本発明の製造方法で製造した自動調心ころ軸受用保持器は、一方の前記単列保持器の前記凹部及び他方の前記単列保持器の前記凸部を係合させた状態で使用し、前記凹部及び前記凸部が係合する凹凸係合部は前記軸受の軸方向隙間よりも大きい係合深さを有する。それにより、一対の前記単列保持器は使用状態で一体となる。すなわち、一方のころ列に負荷がかかった際に、一方の前記単列保持器から他方の前記単列保持器へ負荷が伝達され、一方のころ列及び前記単列保持器と他方のころ列及び前記単列保持器は一体となって回転する。したがって、本発明の製造方法で製造した自動調心ころ軸受用保持器は、両方のころ列の回転（公転）を均等化できる。それにより、前記自動調心ころ軸受用保持器は、２列のころ列を別体の２個の保持器で案内する特許文献１の構成における問題、すなわち、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題が生じない。 Further, the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, and the concave-convex engaging portion is used. It has a larger engagement depth than the axial clearance of the bearing. Alternatively, the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave portion of one of the single row cages and the convex portion of the other single row cage are engaged with each other. However, the concave-convex engaging portion with which the concave portion and the convex portion engage has an engagement depth larger than the axial gap of the bearing. As a result, the pair of single row cages becomes one in use. That is, when a load is applied to one roller row, the load is transmitted from one of the single row cages to the other single row cage, and one roller row and the single row cage and the other roller row are transmitted. And the single row cage rotates as one. Therefore, the cage for self-aligning roller bearings manufactured by the manufacturing method of the present invention can equalize the rotation (revolution) of both roller rows. As a result, the self-aligning roller bearing cage causes a problem in the configuration of Patent Document 1 in which two rows of roller bearings are guided by two separate cages, that is, roller skewing and fretting occur. There is no problem that the life of the bearing is shortened.
　さらに、本発明の製造方法で製造した自動調心ころ軸受用保持器は、一対の前記単列保持器により構成されるため、自動調心ころ軸受を組み立てる際に、保持器を弾性変形させながら挿入する必要がないので、組立作業性が良い。 Further, since the cage for the self-aligning roller bearing manufactured by the manufacturing method of the present invention is composed of the pair of the single row cages, the cage is elastically deformed when the self-aligning roller bearing is assembled. As it does not need to be inserted, assembly workability is good.
本発明の実施の形態に係る製造方法で製造した自動調心ころ軸受用保持器の斜視図である。It is a perspective view of the cage for self-aligning roller bearing manufactured by the manufacturing method which concerns on embodiment of this invention. 前記保持器の分解斜視図である。It is an exploded perspective view of the cage. 前記保持器を用いた自動調心ころ軸受の斜視図である。It is a perspective view of the self-aligning roller bearing using the cage. 前記自動調心ころ軸受の縦断面図である。It is a vertical sectional view of the self-aligning roller bearing. 前記自動調心ころ軸受の縦断面斜視図である。It is a vertical sectional perspective view of the self-aligning roller bearing. 凹凸係合部の形状の例（ａ）ないし（ｅ）を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example (a) to (e) of the shape of the concave-convex engagement part. ２列のころ列の位相を異ならせた例を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example which made the phase of two rows of roller rows different. ２列のころ列の位相を同じにした例を示す要部拡大展開図である。It is the main part enlarged development view which shows the example which made the phase of two rows of roller rows the same. ２列のころ列の位相を異ならせた例を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example which made the phase of two rows of roller rows different. ２列のころ列の位相を同じにした例を示す要部拡大展開図である。It is the main part enlarged development view which shows the example which made the phase of two rows of roller rows the same. 一対の単列保持器において、一方の単列保持器に凹部を１つ設けるとともに、他方の単列保持器に凸部を１つ設けた例を示す要部拡大展開図である。FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages. 本発明の実施の形態に係る自動調心ころ軸受用保持器の製造方法におけるプレス加工工程を示す説明図である。It is explanatory drawing which shows the press working process in the manufacturing method of the cage for self-aligning roller bearing which concerns on embodiment of this invention. 前記プレス加工工程の別の例を示す説明図である。It is explanatory drawing which shows another example of the said press working process. 前記プレス加工工程のさらに別の例を示す説明図である。It is explanatory drawing which shows the further example of the press working process.
　以下、本発明に係る実施の形態を図面に基づいて説明する。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
　本明細書において、自動調心ころ軸受１０の回転軸Ｊ（図４Ａ参照）の方向を「軸方向」、軸方向に直交し、回転軸Ｊから遠ざかる方向を「径方向」、ころ列Ｃ１又はＣ２（図４Ａ及び図４Ｂ参照）のころ１３が並ぶ方向を「周方向」という。 In the present specification, the direction of the rotation axis J (see FIG. 4A) of the self-aligning roller bearing 10 is "axial direction", the direction orthogonal to the axis direction is "diametrical direction", and the roller row C1 or The direction in which the rollers 13 are lined up at C2 (see FIGS. 4A and 4B) is referred to as "circumferential direction".
＜自動調心ころ軸受用保持器＞
　図１の斜視図、及び図２の分解斜視図に示すように、本発明の実施の形態に係る製造方法で製造した自動調心ころ軸受用保持器１は、一対の単列保持器２Ａ，２Ｂからなる。一対の単列保持器２Ａ，２Ｂは、例えば同一形状であるが、異なる形状であってもよい。ただし、一対の単列保持器２Ａ，２Ｂを同一形状にすることにより、製造コスト及び部品管理コスト等を低減できる。 <Cage for self-aligning roller bearings>
As shown in the perspective view of FIG. 1 and the exploded perspective view of FIG. 2, the self-aligning roller bearing cage 1 manufactured by the manufacturing method according to the embodiment of the present invention includes a pair of single row cages 2A. It consists of 2B. The pair of single row cages 2A and 2B have, for example, the same shape, but may have different shapes. However, by making the pair of single row cages 2A and 2B the same shape, it is possible to reduce the manufacturing cost, the parts management cost, and the like.
　単列保持器２Ａ，２Ｂは、軸方向に離間した大径リング部３及び小径リング部４を複数の柱部５により繋いだ形状を成す。単列保持器２Ａ，２Ｂには、球面ころ１３（例えば図３及び図４Ａ参照）を収容する複数のポケット孔Ｐが周方向に等間隔に形成される。単列保持器２Ａ，２Ｂは、大径側端面３Ａに凹凸係合部Ａを有する。 The single- row cages 2A and 2B have a shape in which a large-diameter ring portion 3 and a small-diameter ring portion 4 separated in the axial direction are connected by a plurality of pillar portions 5. In the single row cages 2A and 2B, a plurality of pocket holes P for accommodating spherical rollers 13 (see, for example, FIGS. 3 and 4A) are formed at equal intervals in the circumferential direction. The single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end surface 3A.
　柱部５のポケット孔Ｐ側の側面は、案内面６、抜止め凸部７、及び窪み部８からなる。抜止め凸部７の径方向内方の窪み部８は、抜止め凸部７が径方向内方まで延びていると球面ころ１３（例えば図３及び図４Ａ参照）と干渉するため、球面ころ１３との干渉を回避するために設けている。 The side surface of the pillar portion 5 on the pocket hole P side is composed of a guide surface 6, a retaining convex portion 7, and a recessed portion 8. The concave portion 8 inward in the radial direction of the retaining convex portion 7 interferes with the spherical roller 13 (see, for example, FIGS. 3 and 4A) when the retaining convex portion 7 extends inward in the radial direction. It is provided to avoid interference with 13.
＜自動調心ころ軸受＞
　図３の斜視図、図４Ａの縦断面図、及び図４Ｂの縦断面斜視図に示すように、自動調心ころ軸受１０は、２列の周方向のころ列Ｃ１，Ｃ２を有し、外輪１１と内輪１２との間に転動体として樽状の球面ころ１３を組み込んだ構造を有する。外輪１１の軌道１１Ａは球面であり、内輪１２の軌道１２Ａは複列である。自動調心ころ軸受１０は、外輪１１の軌道１１Ａの曲率中心と軸受中心とが一致しているため、軸の傾きに対して自動調心性を持つ。 <Self-aligning roller bearing>
As shown in the perspective view of FIG. 3, the vertical sectional view of FIG. 4A, and the vertical sectional perspective view of FIG. 4B, the self-aligning roller bearing 10 has two rows of roller rows C1 and C2 in the circumferential direction, and has an outer ring. It has a structure in which a barrel-shaped spherical roller 13 is incorporated as a rolling element between the 11 and the inner ring 12. The track 11A of the outer ring 11 is a spherical surface, and the track 12A of the inner ring 12 is a double row. Since the center of curvature of the track 11A of the outer ring 11 and the center of the bearing coincide with each other, the self-aligning roller bearing 10 has self-alignment property with respect to the inclination of the shaft.
　図４Ａ及び図４Ｂに示す使用状態で、保持器１の単列保持器２Ａは、ころ列Ｃ１を案内し、保持器１の単列保持器２Ｂは、ころ列Ｃ２を案内する。保持器１は、図１、図３及び図４Ａのように、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態で使用する。 In the usage state shown in FIGS. 4A and 4B, the single row cage 2A of the cage 1 guides the roller row C1, and the single row cage 2B of the cage 1 guides the roller row C2. As shown in FIGS. 1, 3 and 4A, the cage 1 is used in a state where the concave-convex engaging portions A of the pair of single- row cages 2A and 2B are engaged with each other.
＜凹凸係合部の形状＞
　図５の展開図に示すように、凹凸係合部Ａは、例えば、（ａ）のような矩形波状、（ｂ）のような矩形状の凸部の角部を面取りした略矩形波状、（ｃ）のような台形波状、（ｄ）のような正弦波状、（ｅ）のような丸みを帯びた矩形波状等であり、これらの形状とした場合は、周方向の繰り返し形状を有する。図５に示す係合深さＤは、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を使用状態で確実に係合させるために、自動調心ころ軸受１０の軸方向隙間よりも大きくする必要がある。 <Shape of uneven engagement part>
As shown in the developed view of FIG. 5, the concave-convex engaging portion A has, for example, a rectangular wavy shape as shown in (a) and a substantially rectangular wavy shape obtained by chamfering the corners of the rectangular convex portion as shown in (b). It has a trapezoidal wavy shape such as c), a sine wavy shape such as (d), a rounded rectangular wavy shape such as (e), and the like, and when these shapes are used, they have a repeating shape in the circumferential direction. The engagement depth D shown in FIG. 5 is from the axial gap of the self-aligning roller bearing 10 in order to reliably engage the uneven engagement portions A of the pair of single row cages 2A and 2B in the used state. Also needs to be large.
　単列保持器２Ａの凹凸係合部Ａと単列保持器２Ｂの凹凸係合部Ａは、同一の形状であっても、異なる形状であってもよい。ただし、単列保持器２Ａの凹凸係合部Ａと単列保持器２Ｂの凹凸係合部Ａとを同一形状にして、一対の単列保持器２Ａ，２Ｂを同一形状にすれば、前記のとおり、製造コスト及び部品管理コスト等を低減できる。 The concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B may have the same shape or different shapes. However, if the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B have the same shape, and the pair of single- row cages 2A and 2B have the same shape, the above-mentioned As you can see, manufacturing costs, parts management costs, etc. can be reduced.
　単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態におけるころ列Ｃ１，Ｃ２は、図６Ａの要部拡大展開図のように位相を異ならせてもよく、図６Ｂの要部拡大展開図のように位相を同じにしてもよい。 The roller rows C1 and C2 in a state where the concave-convex engaging portions A of the single row cages 2A and 2B are engaged with each other may be out of phase as shown in the enlarged expansion view of the main part of FIG. 6A. The phases may be the same as shown in the enlarged development view of the main part.
　図７Ａ及び図７Ｂの要部拡大展開図に示すように、凹凸係合部Ａの周方向の繰り返し形状の周期をポケット孔Ｐの周期よりも短くし、同一形状の凹凸係合部Ａで、図７Ａのように位相を異ならせた形態と、図７Ｂのように位相を同じにした形態とを変更可能にすることも容易である。 As shown in the enlarged expansion view of the main part of FIGS. 7A and 7B, the period of the repeating shape in the circumferential direction of the uneven engagement portion A is shorter than the period of the pocket hole P, and the uneven engagement portion A having the same shape has the same shape. It is also easy to make it possible to change the form in which the phases are different as shown in FIG. 7A and the form in which the phases are the same as shown in FIG. 7B.
　凹凸係合部Ａは、周方向の繰り返し形状に限定されない。すなわち、一対の単列保持器２Ａ，２Ｂの各々に必ずしも凹凸の両方を設ける必要はない。例えば、一対の単列保持器２Ａ，２Ｂの一方に凹部を設けるとともに他方に凸部を設けて凹凸係合部Ａとしてもよい。その場合は、一対の単列保持器２Ａ，２Ｂは、一方の単列保持器の大径側端面３Ａに凹部を有し、他方の単列保持器の大径側端面３Ａに凸部を有する。 The uneven engagement portion A is not limited to the repeating shape in the circumferential direction. That is, it is not always necessary to provide both unevenness on each of the pair of single row cages 2A and 2B. For example, one of the pair of single row cages 2A and 2B may be provided with a concave portion and the other may be provided with a convex portion to form the concave-convex engaging portion A. In that case, the pair of single row cages 2A and 2B have a concave portion on the large diameter side end surface 3A of one single row cage and a convex portion on the large diameter side end surface 3A of the other single row cage. ..
　図８の要部拡大展開図は、一対の単列保持器２Ａ，２Ｂにおいて、一方の単列保持器２Ａの大径側端面に凹部Ａ１を１つ設けるとともに、他方の単列保持器２Ｂの大径側端面に凸部Ａ２を１つ設けて凹凸係合部Ａとした例を示している。単列保持器２Ａに凹部Ａ１のみを２つ以上、単列保持器２Ｂに凸部Ａ２のみを２つ以上設けてもよい。図８に示す凹部Ａ１及び凸部Ａ２が係合する凹凸係合部Ａの係合深さＤは、一対の単列保持器２Ａ，２Ｂにおいて、単列保持器２Ａの凹部Ａ１及び単列保持器２Ｂの凸部Ａ２を使用状態で確実に係合させるために、自動調心ころ軸受１０の軸方向隙間よりも大きくする必要がある。 In the enlarged expansion view of the main part of FIG. 8, in the pair of single row cages 2A and 2B, one recess A1 is provided on the large diameter side end surface of one single row cage 2A, and the other single row cage 2B is provided. An example is shown in which one convex portion A2 is provided on the end surface on the large diameter side to form the concave-convex engaging portion A. The single row cage 2A may be provided with only two or more concave portions A1 and the single row cage 2B may be provided with only two or more convex portions A2. The engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 shown in FIG. 8 is such that the concave portion A1 and the single-row holding of the single-row cage 2A are held in the pair of single- row cages 2A and 2B. In order to securely engage the convex portion A2 of the vessel 2B in the used state, it is necessary to make it larger than the axial clearance of the self-aligning roller bearing 10.
＜自動調心ころ軸受用保持器の製造方法＞
　自動調心ころ軸受用保持器１の製造方法は、金属板からプレス加工で単列保持器２Ａ，２Ｂを成形するプレス加工工程を含む。以下において、前記プレス加工工程の例を説明する。なお、前記プレス加工工程を終了した後に、必要に応じて、軟窒化処理や、リン酸塩被膜処理等を行ってもよい。 <Manufacturing method of cage for self-aligning roller bearings>
The method for manufacturing the cage 1 for self-aligning roller bearings includes a press working step of forming single row cages 2A and 2B from a metal plate by press working. Hereinafter, an example of the press working process will be described. After the press working step is completed, a soft nitriding treatment, a phosphate coating treatment, or the like may be performed, if necessary.
　以下に示すプレス加工工程の第１例ないし第３例においては、単列保持器２Ａ，２Ｂが大径側端面３Ａに凹凸係合部Ａを有する形状である場合について説明する。 In the first to third examples of the press working process shown below, a case where the single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end face 3A will be described.
（プレス加工工程の第１例）
　図９の説明図を参照して説明する。 (First example of press working process)
This will be described with reference to the explanatory diagram of FIG.
（ブランク加工工程）
　先ず、（ａ）のように金属板のブランク材Ｂ１を打ち抜くブランク加工工程を行う。ブランク材Ｂ１は円板状である。 (Blank processing process)
First, a blank processing step of punching out the blank material B1 of the metal plate is performed as in (a). The blank material B1 has a disk shape.
（椀型形状に成形するための加工工程）
　次に、（ｂ）のように椀型形状に成形するための加工工程を行う。前記椀型形状に成形するための加工工程は、（１）１回ないし複数回の絞り加工を行う工程と、（２）絞り加工後の形状を椀型に成形するための、側壁の上部である大径側部分Ｇを起立させる椀型成形加工工程とからなる。 (Processing process for forming into a bowl shape)
Next, a processing step for forming into a bowl shape as shown in (b) is performed. The processing steps for forming the bowl shape are (1) one or more drawing processes and (2) the upper part of the side wall for forming the shape after drawing into a bowl shape. It consists of a bowl-shaped molding process for erecting a certain large-diameter side portion G.
（ポケット孔加工工程）
　次に、（ｃ）のようにポケット孔Ｐを形成するポケット孔加工工程を行う。必要に応じて芯出し孔、又は、小径リング部４の内径側を形成する内径抜孔を、前記ポケット孔加工工程前に形成してもよい。本工程例では、芯出し孔Ｈを形成する芯抜加工工程を、前記ポケット孔加工工程前に行った。 (Pocket hole processing process)
Next, the pocket hole processing step of forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing step. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing step.
（柱押加工工程）
　次に、（ｄ）のように窪み部８を形成する柱押加工工程を行う。 (Pillar pushing process)
Next, a pillar pushing process for forming the recessed portion 8 is performed as in (d).
（凹凸係合部加工工程）
　次に、（ｅ）のように大径側端面３Ａになる部分に凹凸係合部Ａを形成する凹凸係合部加工工程を行う。例えば保持器２Ａ，２Ｂの径方向からの打抜加工により、凹凸係合部Ａを形成する。なお、本工程例では、前記ポケット孔加工工程の後で前記凹凸係合部加工工程の前に、小径リング部４の内径側を形成する内径抜加工工程を行った。 (Concavo-convex engagement part processing process)
Next, the uneven engagement portion processing step of forming the concave-convex engaging portion A on the portion to be the large-diameter side end surface 3A as in (e) is performed. For example, the concave-convex engaging portion A is formed by punching the cages 2A and 2B from the radial direction. In this step example, after the pocket hole processing step and before the uneven engagement portion processing step, an inner diameter punching process for forming the inner diameter side of the small diameter ring portion 4 was performed.
　以上のように、プレス加工工程の第１例では、前記プレス加工工程の前記椀型成形加工工程よりも後の凹凸係合部加工工程（ｅ）で、大径側端面３Ａになる部分に対して凹凸係合部Ａを形成する。 As described above, in the first example of the press working step, in the uneven engagement portion machining step (e) after the bowl-shaped forming machining step of the press working step, the portion that becomes the large-diameter side end face 3A is To form the concave-convex engaging portion A.
　上記のプレス加工工程の第１例では、プレス加工の最後の工程である凹凸係合部加工工程（ｅ）で凹凸係合部Ａの形成を行っているが、プレス加工の最後の工程以外の工程で凹凸係合部Ａの形成を行ってもよい。例えば、ポケット孔加工工程（ｃ）の際に、同時加工で、保持器２Ａ，２Ｂの大径側端面３Ａになる部分を打ち抜いて凹凸係合部Ａを形成してもよい。 In the first example of the above-mentioned press working process, the uneven engagement portion A is formed in the uneven engagement portion processing step (e), which is the final step of the press working, but other than the final step of the press working. The uneven engagement portion A may be formed in the process. For example, in the pocket hole processing step (c), the concave-convex engaging portion A may be formed by punching out the portions of the cages 2A and 2B that become the large-diameter side end faces 3A by simultaneous processing.
（プレス加工工程の第２例）
　図１０の説明図を参照して説明する。 (Second example of press working process)
This will be described with reference to the explanatory diagram of FIG.
（ブランク加工工程）
　先ず、（ａ）のように金属板のブランク材Ｂ１を打ち抜くブランク加工工程を行う。ブランク材Ｂ１は円板状である。 (Blank processing process)
First, a blank processing step of punching out the blank material B1 of the metal plate is performed as in (a). The blank material B1 has a disk shape.
（椀型形状に成形するための加工工程）
　次に、（ｂ）のように大径側端面３Ａになる部分に凹凸係合部Ａを形成した椀型形状に成形するための加工工程を行う。前記椀型形状に成形するための加工工程は、（１）１回又は複数回の絞り加工工程と、（２）大径側端面３Ａになる部分に対して、凹凸係合部Ａになる凹凸部を打ち抜いて形成する打抜加工工程と、（３）絞り加工後の形状を椀型に成形するための、側壁の上部である大径側部分Ｇを起立させる椀型成形加工工程とからなる。 (Processing process for forming into a bowl shape)
Next, a processing step for forming into a bowl-shaped shape in which the concave-convex engaging portion A is formed in the portion to be the large-diameter side end surface 3A as in (b) is performed. The processing steps for forming the bowl shape are (1) one or more drawing processes and (2) unevenness that becomes the uneven engagement portion A with respect to the portion that becomes the large diameter side end surface 3A. It consists of a punching process for punching and forming a portion, and (3) a bowl-shaped forming process for erecting a large-diameter side portion G, which is the upper part of the side wall, for forming the shape after drawing into a bowl shape. ..
　大径側端面３Ａになる部分に対して、凹凸係合部Ａになる凹凸部を打ち抜いて形成する打抜加工工程は、例えば、絞り加工工程と同時でもよいし、別工程として、前記絞り加工工程と前記椀型成形加工工程の間で、又は、前記絞り加工工程で複数回の絞り加工を行う場合は、前記絞り加工工程内の絞り加工と絞り加工の間で行ってもよい。すなわち、前記椀型成形加工工程よりも前の工程で、大径側端面３Ａになる部分に対して、凹凸係合部Ａになる凹凸部を形成する。 The punching process for punching and forming the uneven portion to be the concave-convex engaging portion A with respect to the portion to be the large-diameter side end surface 3A may be, for example, simultaneously with the drawing process, or as a separate step, the drawing process. It may be performed between the step and the bowl-shaped forming process, or when the drawing process is performed a plurality of times in the drawing process, it may be performed between the drawing process and the drawing process in the drawing process. That is, in the process prior to the bowl-shaped forming process, the uneven portion that becomes the concave-convex engaging portion A is formed with respect to the portion that becomes the large-diameter side end face 3A.
（ポケット孔加工工程）
　次に、（ｃ）のようにポケット孔Ｐを形成するポケット孔加工を行う。必要に応じて芯出し孔、又は、小径リング部４の内径側を形成する内径抜孔を、前記ポケット孔加工前に形成してもよい。本工程例では、芯出し孔Ｈを形成する芯抜加工を、前記ポケット孔加工前に行った。 (Pocket hole processing process)
Next, the pocket hole processing for forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing.
（柱押加工工程）
　次に、（ｄ）のように窪み部８を形成する柱押加工工程を行う。 (Pillar pushing process)
Next, a pillar pushing process for forming the recessed portion 8 is performed as in (d).
（内径抜加工工程）
　次に、（ｅ）のように、小径リング部４の内径側を形成する内径抜加工工程を行う。 (Inner diameter punching process)
Next, as shown in (e), an inner diameter punching step for forming the inner diameter side of the small diameter ring portion 4 is performed.
　以上のように、プレス加工工程の第２例では、前記プレス加工工程の前記椀型成形加工工程より前の工程で、大径側端面３Ａになる部分に対して、凹凸係合部Ａになる凹凸部を形成する。 As described above, in the second example of the press working process, the concave-convex engaging portion A is formed with respect to the portion to be the large-diameter side end surface 3A in the step before the bowl-shaped forming process of the press working step. Form uneven parts.
（プレス加工工程の第３例）
　図１１の説明図を参照して説明する。 (Third example of press working process)
This will be described with reference to the explanatory diagram of FIG.
（ブランク加工工程）
　先ず、（ａ）のように金属板のブランク材Ｂ２を打ち抜くブランク加工工程を行う。ブランク材Ｂ２は円板の外周に凹凸部Ｅを設けた形状である。大径側端面３Ａになる部分９は、ブランク材Ｂ２の外周面Ｆである。凹凸部Ｅは、単列保持器２Ａ，２Ｂの凹凸係合部Ａになる。 (Blank processing process)
First, a blank processing step of punching out the blank material B2 of the metal plate is performed as in (a). The blank material B2 has a shape in which an uneven portion E is provided on the outer periphery of the disk. The portion 9 that becomes the large-diameter side end surface 3A is the outer peripheral surface F of the blank material B2. The concavo-convex portion E becomes the concavo-convex engaging portion A of the single row cages 2A and 2B.
（椀型形状に成形するための加工工程）
　次に、（ｂ）のように椀型形状に成形するための加工工程を行う。前記椀型形状に成形するための加工は、（１）１回又は複数回の絞り加工工程と、（２）絞り加工後の形状を椀型に成形するための、側壁の上部である大径側部分Ｇを起立させる椀型成形加工工程とからなる。 (Processing process for forming into a bowl shape)
Next, a processing step for forming into a bowl shape as shown in (b) is performed. The processing for forming the bowl shape is (1) one or more drawing steps, and (2) a large diameter which is the upper part of the side wall for forming the shape after drawing into a bowl shape. It consists of a bowl-shaped molding process for raising the side portion G.
（ポケット孔加工工程）
　次に、（ｃ）のようにポケット孔Ｐを形成するポケット孔加工工程を行う。必要に応じて芯出し孔、又は、小径リング部４の内径側を形成する内径抜孔を、前記ポケット孔加工前に形成してもよい。本工程例では、前記芯出し孔Ｈを形成する芯抜加工を、前記ポケット孔加工前に行った。 (Pocket hole processing process)
Next, the pocket hole processing step of forming the pocket hole P is performed as in (c). If necessary, a centering hole or an inner diameter hole for forming the inner diameter side of the small diameter ring portion 4 may be formed before the pocket hole processing. In this step example, the centering process for forming the centering hole H was performed before the pocket hole processing.
（柱押加工工程）
　次に、（ｄ）のように窪み部８を形成する柱押加工工程を行う。 (Pillar pushing process)
Next, a pillar pushing process for forming the recessed portion 8 is performed as in (d).
（内径抜加工工程）
　次に、（ｅ）のように、本工程例では、前記柱押加工の後で、小径リング部４の内径側を形成する内径抜加工工程を行う。 (Inner diameter punching process)
Next, as shown in (e), in this step example, after the pillar pressing process, an inner diameter punching process for forming the inner diameter side of the small diameter ring portion 4 is performed.
　以上のように、プレス加工工程の第３例では、前記プレス加工工程の前記椀型成形加工工程よりも前のブランク加工工程（ａ）で、大径側端面３Ａになる部分９（外周面Ｆ）に対して、凹凸係合部Ａになる凹凸部Ｅを形成する。 As described above, in the third example of the press working process, the portion 9 (outer peripheral surface F) that becomes the large diameter side end surface 3A in the blank processing step (a) prior to the bowl-shaped forming processing step of the press processing step. ), The uneven portion E that becomes the concave-convex engaging portion A is formed.
　以上のようなプレス加工工程の第１例ないし第３例では、前記ブランク加工工程があり、金属板のブランク材Ｂ１，Ｂ２を使用している。本発明の製造方法における金属板からプレス加工で単列保持器２Ａ，２Ｂを成形するプレス加工工程は、金属板のブランク材を使用するものに限定されない。すなわち、前記プレス加工工程において、金属板のブランク材を使用する前記ブランク加工工程を無くし、金属板材から切断と絞りを同時に行う、切絞り加工を行う切絞り加工工程を行ってもよい。 In the first to third examples of the press working process as described above, there is the blank processing step, and the blank materials B1 and B2 of the metal plate are used. The press working step of forming the single row cages 2A and 2B from the metal plate by the press working in the manufacturing method of the present invention is not limited to the one using the blank material of the metal plate. That is, in the press working step, the blanking step of using the blank material of the metal plate may be eliminated, and the cutting and drawing step of cutting and drawing the metal plate material at the same time may be performed.
　前記切絞り加工工程を行う場合であっても、凹凸係合部Ａの形成は、前記プレス加工工程内の単列保持器２Ａ，２Ｂの側壁の大径側部分Ｇを起立させる椀型成形加工工程よりも後の工程で行う。あるいは、凹凸係合部Ａになる凹凸部の形成は、前記プレス加工工程内の前記椀型成形加工工程よりも前の工程（前記切絞り加工と同時に行う前記凹凸部を形成する加工工程も含む）で行う。 Even when the cutting and drawing process is performed, the formation of the concave-convex engaging portion A is a bowl-shaped forming process in which the large-diameter side portion G of the side wall of the single- row cages 2A and 2B in the press processing process is erected. It is performed in a process after the process. Alternatively, the formation of the concavo-convex portion to be the concavo-convex engaging portion A includes a step prior to the bowl-shaped forming process in the press working step (including a processing step of forming the uneven portion performed at the same time as the cutting and drawing process). ).
　一対の単列保持器２Ａ，２Ｂが、一方の単列保持器の大径側端面３Ａに凹部を有し、他方の単列保持器の大径側端面３Ａに凸部を有する場合は、前記プレス加工工程の第１例ないし第３例において、以下の（１）ないし（２）のように加工を行う。 When the pair of single- row cages 2A and 2B have a concave portion on the large-diameter side end surface 3A of one single-row cage and a convex portion on the large-diameter side end surface 3A of the other single-row cage, the above-mentioned In the first to third examples of the press working process, the processing is performed as described in (1) to (2) below.
（１）プレス加工工程の第１例における、大径側端面３Ａになる部分に凹凸係合部Ａを形成する工程に替えて、大径側端面３Ａになる部分に凹部Ａ１又は凸部Ａ２を形成する工程を行う。 (1) Instead of the step of forming the concave-convex engaging portion A in the portion to be the large-diameter side end surface 3A in the first example of the press working process, the concave portion A1 or the convex portion A2 is formed in the portion to be the large-diameter side end surface 3A. Perform the forming step.
（２）プレス加工工程の第２例及び第３例における、大径側端面３Ａになる部分に対して凹凸係合部Ａになる凹凸部を形成する工程に替えて、大径側端面３Ａになる部分に対して凹部Ａ１になる凹部又は凸部Ａ２になる凸部を形成する工程を行う。 (2) Instead of the step of forming the uneven portion to be the concave-convex engaging portion A with respect to the portion to be the large-diameter side end surface 3A in the second and third examples of the press working process, the large-diameter side end surface 3A is used. A step of forming a concave portion to be a concave portion A1 or a convex portion to be a convex portion A2 is performed with respect to the portion to be formed.
＜作用効果＞
　本発明の製造方法が対象とする自動調心ころ軸受用保持器１は、２列のころ列Ｃ１，Ｃ２を各列ごとに案内する一対の単列保持器２Ａ，２Ｂからなる。単列保持器２Ａ，２Ｂは、その大径側端面３Ａに、自動調心ころ軸受１０の軸方向隙間よりも大きい係合深さＤを有する凹凸係合部Ａを有する。そして、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態で使用する。あるいは、一対の単列保持器２Ａ，２Ｂは、一方の単列保持器２Ａの大径側端面３Ａに凹部Ａ１を設けるとともに、他方の単列保持器２Ｂの大径側端面３Ａに凸部Ａ２を設けて、凹部Ａ１及び凸部Ａ２が係合する凹凸係合部Ａの係合深さＤを自動調心ころ軸受１０の軸方向隙間よりも大きくしている。そして、凹部Ａ１及び凸部Ａ２を係合させた状態で使用する。 <Action effect>
The self-aligning roller bearing cage 1 targeted by the manufacturing method of the present invention comprises a pair of single row cages 2A and 2B that guide the two rows of roller rows C1 and C2 for each row. The single row cages 2A and 2B have a concave-convex engaging portion A having an engaging depth D larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the concave-convex engaging portions A of the pair of single- row cages 2A and 2B are engaged with each other. Alternatively, the pair of single- row cages 2A and 2B are provided with a recess A1 on the large-diameter side end surface 3A of one single-row cage 2A, and a convex portion A2 on the large-diameter side end surface 3A of the other single-row cage 2B. The engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 are engaged is made larger than the axial gap of the self-aligning roller bearing 10. Then, it is used in a state where the concave portion A1 and the convex portion A2 are engaged with each other.
　本発明の製造方法は、金属板からプレス加工で単列保持器２Ａ，２Ｂを成形するプレス加工工程を含む。そして、前記プレス加工工程の椀型成形加工工程よりも後の工程で、大径側端面３Ａになる部分に対して凹凸係合部Ａ、又は、凹部Ａ１若しくは凸部Ａ２を形成する。あるいは、前記プレス加工工程の椀型成形加工工程よりも前の工程で、大径側端面３Ａになる部分に対して、凹凸係合部Ａになる凹凸部、又は、凹部Ａ１になる凹部若しくは凸部Ａ２になる凸部を形成する。 The manufacturing method of the present invention includes a press working step of forming single row cages 2A and 2B from a metal plate by press working. Then, in a step after the bowl-shaped forming process of the press working step, the concave-convex engaging portion A, the concave portion A1 or the convex portion A2 is formed with respect to the portion to be the large-diameter side end surface 3A. Alternatively, in the step prior to the bowl-shaped forming process of the press working step, the concave-convex portion that becomes the concave-convex engaging portion A, or the concave or convex portion that becomes the concave-convex A1 with respect to the portion that becomes the large-diameter side end surface 3A. A convex portion to be a portion A2 is formed.
　このように、本発明の製造方法は、特許文献２のように２列のころ列の両方を案内する一体型の保持器をプレス加工で成形せずに、単列保持器２Ａ，２Ｂをプレス加工で成形する。それにより、単列保持器２Ａ，２Ｂはプレス機及び金型と干渉しないため、プレス加工で成形できる保持器のサイズが限定されない。その上、単列保持器２Ａ，２Ｂをプレス加工で成形することから、特許文献２のような２列のころ列の両方を案内する一体型の保持器をプレス加工で成形する場合のように金型構造が複雑にならず、加工工程も少なくなる。したがって、本発明の製造方法によれば、加工コストを低減できるとともに、形状精度が高くなる。 As described above, in the manufacturing method of the present invention, the single row cages 2A and 2B are pressed without forming the integrated cage that guides both the two rows of roller rows by press working as in Patent Document 2. Mold by processing. As a result, the single row cages 2A and 2B do not interfere with the press machine and the die, so that the size of the cage that can be formed by press working is not limited. In addition, since the single row cages 2A and 2B are molded by press working, as in the case of molding an integrated cage that guides both of the two rows of roller rows as in Patent Document 2, by stamping. The mold structure is not complicated and the number of processing steps is reduced. Therefore, according to the manufacturing method of the present invention, the processing cost can be reduced and the shape accuracy is improved.
　また、本発明の製造方法で製造した自動調心ころ軸受用保持器１は、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態で使用し、凹凸係合部Ａは軸受１０の軸方向隙間よりも大きい係合深さＤを有する。あるいは、本発明の製造方法で製造した自動調心ころ軸受用保持器１は、一方の単列保持器２Ａの凹部Ａ１及び他方の単列保持器２Ｂの凸部Ａ２を係合させた状態で使用し、凹部Ａ１及び凸部Ａ２が係合する凹凸係合部Ａは軸受１０の軸方向隙間よりも大きい係合深さＤを有する。それにより、一対の単列保持器２Ａ，２Ｂは使用状態で一体となる。すなわち、一方のころ列Ｃ１に負荷がかかった際に、一方の単列保持器２Ａから他方の単列保持器２Ｂへ負荷が伝達され、一方のころ列Ｃ１及び単列保持器２Ａと他方のころ列Ｃ２及び単列保持器２Ｂは一体となって回転する。したがって、本発明の製造方法で製造した自動調心ころ軸受用保持器１は、両方のころ列Ｃ１，Ｃ２の回転（公転）を均等化できる。それにより、保持器１は、２列のころ列Ｃ１，Ｃ２を別体の２個の保持器で案内する特許文献１の構成における問題、すなわち、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題が生じない。 Further, the cage 1 for self-aligning roller bearings manufactured by the manufacturing method of the present invention is used in a state where the concave-convex engaging portions A of the pair of single- row cages 2A and 2B are engaged with each other, and the concave-convex engagement is performed. The portion A has an engagement depth D larger than the axial gap of the bearing 10. Alternatively, in the self-aligning roller bearing cage 1 manufactured by the manufacturing method of the present invention, the concave portion A1 of one single row cage 2A and the convex portion A2 of the other single row cage 2B are engaged with each other. The concave-convex engaging portion A to which the concave portion A1 and the convex portion A2 are engaged has an engagement depth D larger than the axial gap of the bearing 10. As a result, the pair of single row cages 2A and 2B are integrated in use. That is, when a load is applied to one roller row C1, the load is transmitted from one single row cage 2A to the other single row cage 2B, and one roller row C1 and the single row cage 2A and the other The roller row C2 and the single row cage 2B rotate together. Therefore, the self-aligning roller bearing cage 1 manufactured by the manufacturing method of the present invention can equalize the rotation (revolution) of both roller rows C1 and C2. As a result, the cage 1 causes a problem in the configuration of Patent Document 1 in which the two rows of roller rows C1 and C2 are guided by two separate cages, that is, roller skew and fretting occur, and the bearing life occurs. Does not occur.
　さらに、本発明の製造方法で製造した自動調心ころ軸受用保持器１は、一対の単列保持器２Ａ，２Ｂにより構成されるので、自動調心ころ軸受１０を組み立てる際に、保持器１を弾性変形させながら挿入する必要がないので、組立作業性が良い。 Further, since the cage 1 for the self-aligning roller bearing manufactured by the manufacturing method of the present invention is composed of a pair of single- row cages 2A and 2B, the cage 1 is used when assembling the self-aligning roller bearing 10. Assembling workability is good because it is not necessary to insert the bearing while elastically deforming it.
　以上の実施の形態の記載はすべて例示であり、これに制限されるものではない。本発明の範囲から逸脱することなく種々の改良及び変更を施すことができる。 The above descriptions of the embodiments are all examples and are not limited thereto. Various improvements and changes can be made without departing from the scope of the present invention.
１　自動調心ころ軸受用保持器
２Ａ，２Ｂ　単列保持器
３　大径リング部
３Ａ　大径側端面
４　小径リング部
５　柱部
６　案内面
７　抜止め凸部
８　窪み部
９　大径側端面になる部分
１０　自動調心ころ軸受
１１　外輪
１１Ａ　軌道
１２　内輪
１２Ａ　軌道
１３　球面ころ
Ａ　凹凸係合部
Ａ１　凹部
Ａ２　凸部
Ｂ１，Ｂ２　金属板のブランク材
Ｃ１，Ｃ２　ころ列
Ｄ　係合深さ
Ｅ　凹凸部
Ｆ　外周面
Ｇ　側壁の大径側部分
Ｈ　芯出し孔
Ｊ　回転軸
Ｐ　ポケット孔 1 Cage for self-aligning roller bearings 2A, 2B Single row cage 3 Large diameter ring part 3A Large diameter side end face 4 Small diameter ring part 5 Pillar part 6 Guide surface 7 Retracting convex part 8 Recessed part 9 Large diameter side end face Part 10 Self-aligning roller bearing 11 Outer ring 11A Track 12 Inner ring 12A Track 13 Spherical roller A Concavo-convex engagement part A1 Concave part A2 Convex part B1, B2 Blank material of metal plate C1, C2 Roller row D Engagement depth E Concavo-convex part F Outer peripheral surface G Large diameter side part of the side wall H Centering hole J Rotating shaft P Pocket hole

Claims (3)

  1. 　２列のころ列を有する自動調心ころ軸受に用いる保持器の製造方法であって、
    　前記保持器は、
    　　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
    　前記単列保持器は、
    　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
    　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
    　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
    　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用し、
    　前記製造方法は、
    　　金属板からプレス加工で前記単列保持器を成形するプレス加工工程を含み、
    　　前記プレス加工工程内の前記単列保持器の側壁の大径側部分を起立させる椀型成形加工工程よりも後の工程で、前記大径側端面になる部分に対して前記凹凸係合部、又は、前記凹部若しくは前記凸部を形成することを特徴とする、
    自動調心ころ軸受用保持器の製造方法。     A method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers.
    The cage is
    It consists of a pair of single row cages that guide the two rows of rollers for each row.
    The single row cage is
    The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
    An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
    A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
    It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
    The manufacturing method is
    Including a press working step of forming the single row cage from a metal plate by press working.
    In a step after the bowl-shaped forming step of erecting the large-diameter side portion of the side wall of the single-row cage in the press working step, the uneven engagement portion with respect to the portion to be the large-diameter side end face. Alternatively, the concave portion or the convex portion is formed.
    How to manufacture a cage for self-aligning roller bearings.
  2. 　２列のころ列を有する自動調心ころ軸受に用いる保持器の製造方法であって、
    　前記保持器は、
    　　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
    　前記単列保持器は、
    　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
    　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
    　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
    　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用し、
    　前記製造方法は、
    　　金属板からプレス加工で前記単列保持器を成形するプレス加工工程を含み、
    　　前記プレス加工工程内の前記単列保持器の側壁の大径側部分を起立させる椀型成形加工工程よりも前の工程で、前記大径側端面になる部分に対して、前記凹凸係合部になる凹凸部、又は、前記凹部になる凹部若しくは前記凸部になる凸部を形成することを特徴とする、
    自動調心ころ軸受用保持器の製造方法。     A method for manufacturing a cage used for a self-aligning roller bearing having two rows of rollers.
    The cage is
    It consists of a pair of single row cages that guide the two rows of rollers for each row.
    The single row cage is
    The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
    An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
    A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
    It is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
    The manufacturing method is
    Including a press working step of forming the single row cage from a metal plate by press working.
    In a step prior to the bowl-shaped forming process of erecting the large-diameter side portion of the side wall of the single-row cage in the press working process, the uneven engagement portion with respect to the portion to be the large-diameter side end face. It is characterized in that a concave-convex portion that becomes a concave portion, a concave portion that becomes the concave portion, or a convex portion that becomes the convex portion is formed.
    How to manufacture a cage for self-aligning roller bearings.
  3. 　一対の前記単列保持器は、同一形状である、
    請求項１又は２に記載の自動調心ころ軸受用保持器の製造方法。     The pair of single row cages has the same shape.
    The method for manufacturing a cage for a self-aligning roller bearing according to claim 1 or 2.
PCT/JP2021/004437 2020-05-18 2021-02-05 Method for manufacturing retainer for self-aligning roller bearing WO2021235021A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483770A (en) * 2022-01-25 2022-05-13 中国铁建重工集团股份有限公司 Main bearing of heading machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08326761A (en) * 1995-06-01 1996-12-10 Nakanishi Kinzoku Kogyo Kk Manufacture of retainer for bearing
DE19835367A1 (en) * 1998-08-05 2000-02-17 Fag Oem & Handel Ag Swivel-joint roller bearing has care fixture with ball cage with two halves and held together by link
JP2000104737A (en) * 1998-09-30 2000-04-11 Nsk Ltd Manufacture of press mold retainer for tapered roller bearing
JP2002147450A (en) * 2000-11-16 2002-05-22 Nakanishi Metal Works Co Ltd Spherical roller bearing cage
JP2005090740A (en) * 2003-08-08 2005-04-07 Nsk Ltd Method of manufacturing retainer for roller bearing, and retainer for roller bearing
FR2938027A1 (en) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage for spherical bearing, has spacers prolonged by guiding projection that is axially projected in one of cells annular semi-cage, where line of cells is provided for housing rollers of spherical bearing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08326761A (en) * 1995-06-01 1996-12-10 Nakanishi Kinzoku Kogyo Kk Manufacture of retainer for bearing
DE19835367A1 (en) * 1998-08-05 2000-02-17 Fag Oem & Handel Ag Swivel-joint roller bearing has care fixture with ball cage with two halves and held together by link
JP2000104737A (en) * 1998-09-30 2000-04-11 Nsk Ltd Manufacture of press mold retainer for tapered roller bearing
JP2002147450A (en) * 2000-11-16 2002-05-22 Nakanishi Metal Works Co Ltd Spherical roller bearing cage
JP2005090740A (en) * 2003-08-08 2005-04-07 Nsk Ltd Method of manufacturing retainer for roller bearing, and retainer for roller bearing
FR2938027A1 (en) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage for spherical bearing, has spacers prolonged by guiding projection that is axially projected in one of cells annular semi-cage, where line of cells is provided for housing rollers of spherical bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483770A (en) * 2022-01-25 2022-05-13 中国铁建重工集团股份有限公司 Main bearing of heading machine
CN114483770B (en) * 2022-01-25 2023-10-31 中国铁建重工集团股份有限公司 Main bearing of heading machine

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