JP2015193048A - Assembly apparatus of roller bearing and manufacturing method of roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly apparatus of a roller bearing which is capable of stably supporting retainers having different sizes and enables rollers to fit in fitting holes of each retainer, and to provide a manufacturing method of the roller bearing.SOLUTION: A roller bearing assembly apparatus 1 causes rollers 11 to fit in fitting holes 10a of a retainer 10 to assemble a roller bearing. The roller bearing assembly apparatus 1 includes: a support base 3 in which the retainer 10 is disposed; a columnar member 4 holding the rollers 11; and a retainer pressing member 6 which is disposed so as to sandwich the retainer 10 with the column member 4 and presses the retainer 10 from the opposite side of the columnar member 4.

Description

  The present invention relates to a roller bearing assembling apparatus and a roller bearing manufacturing method, and more specifically, enables a roller to be fitted into a fitting hole of a retainer while stably supporting retainers having various sizes. The present invention relates to a roller bearing assembly apparatus and a roller bearing manufacturing method.

  As an example of a roller bearing assembly device, for example, in JP-A-2006-247778 (Patent Document 1), a cylindrical roller, a retainer having a fitting hole into which the roller is fitted, and a roller together with the retainer There is disclosed a needle roller bearing manufacturing apparatus including an outer ring member that holds the outer ring member. In this needle roller bearing manufacturing apparatus, by rotating the disc member that holds the roller, the roller can be fitted into the fitting hole of the retainer to assemble the bearing.

JP 2006-247778 A

  In the roller bearing manufacturing apparatus disclosed in Patent Document 1, an outer ring member is arranged inside a holding portion provided on a holding plate, and a retainer is arranged inside the outer ring member. Then, by rotating the disk member that holds the roller, the roller is sequentially pressed into the fitting hole of the retainer, and the bearing is assembled.

  In this roller bearing manufacturing apparatus, it is difficult to stably hold the retainer in manufacturing a roller bearing having no outer ring member, and as a result, it is difficult to press-fit the roller. In addition, since the size of the holding portion is determined in advance for each apparatus, a design change is required when the dimensions of the outer ring member and the retainer are changed, resulting in a problem of high cost and reduced productivity. is there.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a roller bearing that can stably support retainers having various sizes and can fit a roller into a fitting hole of the retainer. An assembly apparatus and a method for manufacturing a roller bearing are provided.

  The roller bearing assembly device according to the present invention is a roller bearing assembly device for assembling a roller bearing by fitting a roller into a fitting hole of a retainer. This roller bearing assembling apparatus is arranged so as to sandwich the retainer between a supporting means on which the retainer is arranged, a holding means for holding the roller, and the holding means, and presses the front retainer from the side opposite to the holding means. Pressing means.

  The roller bearing manufacturing method according to the present invention is a roller bearing manufacturing method in which a roller bearing is assembled by fitting a roller into a fitting hole of a retainer. In this method of manufacturing a roller bearing, the step of disposing the retainer on the support means, the step of pressing the retainer by the pressing means from the side opposite to the holding means for holding the roller, and rotating the holding means to rotate the roller And a step of fitting into the fitting hole.

  According to the present invention, it is possible to provide a roller bearing assembling apparatus and a roller bearing manufacturing method capable of fitting a roller into a fitting hole of the retainer while stably supporting retainers having various sizes. it can.

It is a schematic perspective view which shows the structure of the assembly apparatus of the roller bearing which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the state by which the retainer is arrange | positioned at the assembly apparatus of the roller bearing which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the state which the retainer pressing member contact | abutted to the retainer in the assembly apparatus of the roller bearing which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the state by which a roller is press-fit in the fitting hole of a retainer in the assembly apparatus of the roller bearing which concerns on Embodiment 1 of this invention. It is a schematic plan view which shows the state in which a roller is press-fitted in the fitting hole of a retainer in the roller bearing assembly device according to Embodiment 1 of the present invention. It is a flowchart which shows schematically the manufacturing method of the roller bearing which concerns on Embodiment 1 of this invention. It is a flowchart which shows the assembly process (S30) of the manufacturing method of the roller bearing which concerns on Embodiment 1 of this invention. It is a schematic plan view which shows the structure of the assembly apparatus of the roller bearing which concerns on Embodiment 2 of this invention. It is a schematic plan view which shows the structure of the assembly apparatus of the roller bearing which concerns on Embodiment 3 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
First, the structure of the roller bearing assembly device according to Embodiment 1 which is an aspect of the present invention will be described.

  1 and 2, a roller bearing assembling apparatus 1 according to the present embodiment is a roller bearing assembling apparatus for assembling a roller bearing by fitting a roller into a fitting hole of a retainer. The roller bearing assembly device 1 includes support means on which the retainer 10 is disposed. The support means includes a support base 3 on which the retainer 10 is placed. The support base 3 has a support surface that comes into contact with the lower surface of the retainer 10. The size of the support 3 is appropriately designed according to the size (outer diameter) of the retainer 10.

  With reference to FIGS. 1 and 3, the roller bearing assembling apparatus 1 further includes holding means for holding the roller 11. The holding means includes a cylindrical member 4 provided with a plurality of grooves 4a in the circumferential direction. The groove portion 4a has an arc-shaped cross section in a cross section perpendicular to the axial direction of the columnar member 4, and is provided linearly along the axial direction. The groove portions 4 a are provided at equal intervals in the circumferential direction of the cylindrical member 4. The columnar member 4 holds the needle-like roller 11 in each of the plurality of groove portions 4a. The columnar member 4 is connected to a motor (not shown) and is configured to be rotatable around the central axis (arrow in FIG. 1).

  Referring to FIG. 1, the holding means further includes a guide member 5. The guide member 5 is disposed on the support base 3 adjacent to the column member 4. The guide member 5 faces the outer peripheral surface of the columnar member 4 and is arranged with a space between the guide member 5 and the columnar member 4. A space between the cylindrical member 4 and the guide member 5 is configured as a supply path 7. With reference to FIGS. 4 and 5, the supply path 7 is a space for guiding the roller 11 held by the cylindrical member 4 to the fitting hole 10 a of the retainer 10. Thereby, when the cylindrical member 4 is rotated and the roller 11 is guided to the fitting hole 10a of the retainer 10, it is possible to suppress the roller 11 from falling or being displaced. In addition, it is not essential that the holding means includes the guide member 5, and when the placement surface of the retainer 10 is a horizontal plane perpendicular to the direction of gravity, the roller 11 may be tilted or displaced without providing the guide member 5. Can be suppressed.

  With reference to FIG. 1 and FIG. 2, the roller bearing assembling apparatus 1 further includes pressing means for pressing the retainer 10. The pressing means includes a retainer pressing member 6 that is disposed so as to sandwich the retainer 10 between the pressing means and presses the retainer 10 from the side opposite to the holding means. The retainer pressing member 6 is configured to be movable in a direction approaching the retainer 10 and / or a direction away from the retainer 10. Thereby, the retainer pressing member 6 can be changed from a state where the retainer pressing member 6 is separated from the retainer 10 (FIG. 2) to a state where it is in contact with the outer peripheral portion of the retainer 10 (FIG. 3). Thereby, the outer peripheral part of the retainer 10 can be pressed by the retainer pressing member 6. That is, the retainer 10 can be pressed by the retainer pressing member 6 from the side opposite to the cylindrical member 4.

  The retainer pressing member 6 includes a main body 6b and a plurality of (for example, four) rotating members 6a attached to the main body 6b. The rotating member 6a is a member that contacts the retainer 10 and presses the retainer 10 (FIG. 3), and is fixed to the main body 6b. The rotating member 6 a is a member that can rotate following the rotation of the retainer 10 in a state where the rotating member 6 a is in contact with the retainer 10. The rotating member 6a includes at least one of a cam follower and a bearing, may include both the cam follower and the bearing, or may be configured entirely by a cam follower or a bearing. Thereby, when the rotation member 6a is made to contact | abut to the retainer 10, it can suppress that rotation of the retainer 10 is prevented.

  The retainer pressing member 6 presses the retainer 10 at a plurality of locations. More specifically, referring to FIG. 3, the retainer pressing member 6 presses both end portions in the axial direction of the retainer 10. Thereby, the force applied to the retainer 10 from the cylindrical member 4 when the roller 11 is press-fitted can be received by the retainer pressing member 6, and the retainer 10 can be stably supported. In addition, the press location and the number of the retainer 10 are not specifically limited, In order to support the retainer 10 stably, it can set suitably. For example, although only one end portion in the axial direction of the retainer 10 may be pressed, it is preferable to press both end portions from the viewpoint of stably supporting the retainer 10.

  Next, the manufacturing method of the roller bearing which concerns on this Embodiment is demonstrated. The method for manufacturing a roller bearing according to the present embodiment is a method for manufacturing a roller bearing in which the roller 11 is assembled by fitting the roller 11 into the fitting hole 10 a of the retainer 10. Referring to FIG. 6, in the method for manufacturing a roller bearing according to the present embodiment, first, a retainer preparation step (S10) and a roller preparation step (S20) are performed.

  First, in the retainer preparation step (S10), a fitting hole is formed in the formed steel strip, and then the steel strip is bent into an annular shape and both ends are welded. The retainer preparation process is not limited to the so-called welding cage shown here. For example, the steel strip is formed into a circular shape by pressing it into a circular shape and subjected to a plurality of stages of drawing to form a cylindrical shape. You may employ | adopt the form which consists of the form to obtain, or cutting out from a molten material. Thereby, the retainer 10 (FIG. 2) which has a ring shape and has a plurality of fitting holes 10a is prepared. On the other hand, in the roller preparation step (S20), the steel material cut into a predetermined length is subjected to end face molding, deburring, heat treatment, and the like, and then subjected to grinding and polishing. Thereby, the roller 11 (FIG. 3 and FIG. 4) which is a needle roller is prepared.

  Next, an assembly process (S30) is performed. In this step (S30), steps (S31) to (S34) described below are sequentially performed, so that the roller 11 is press-fitted into the fitting hole 10a of the retainer 10.

  With reference to FIG. 7, a retainer mounting process is first implemented as process (S31). In this step (S31), referring to FIG. 2, the retainer 10 is disposed on the support base 3. As shown in FIG. Thereby, the cylindrical member 4 and the guide member 5 are positioned on the inner peripheral side of the retainer 10, and the retainer pressing member 6 is positioned on the outer peripheral side of the retainer 10.

  Next, a retainer pressing process is implemented as process (S32). In this step (S <b> 32), referring to FIG. 3, the retainer pressing member 6 is moved to the retainer 10 side, and the rotating member 6 a is brought into contact with the outer peripheral portion of the retainer 10. Thereby, the retainer 10 is pressed by the retainer pressing member 6 from the side opposite to the columnar member 4 holding the roller 11.

  Next, a roller supply process is implemented as process (S33). In this step (S33), with reference to FIG. 3, the roller 11 is supplied to the gap between the cylindrical member 4 and the guide member 5 from a supply pipe (not shown), and the roller 11 is held in the groove 4a of the cylindrical member 4. .

  Next, a roller press-fitting step is performed as a step (S34). In this step (S34), referring to FIG. 4 and FIG. 5, the cylindrical member 4 is rotated to fit the roller 11 into the fitting hole 10a. More specifically, the motor connected to the cylindrical member 4 is driven to rotate the cylindrical member 4 around the central axis. Thereby, the roller 11 accommodated in the groove 4a is guided to the fitting hole 10a through the supply path 7, and the roller 11 is newly supplied from the supply pipe. At this time, the guide member 5 can prevent the roller 11 passing through the supply path 7 from falling or being displaced. Then, the roller 11 guided to the fitting hole 10a is fitted into the fitting hole 10a.

  At the time of the press-fitting, the roller 11 is fitted into the fitting hole 10 a while the retainer pressing member 6 presses the retainer 10 from the side opposite to the cylindrical member 4. Therefore, the force applied from the cylindrical member 4 to the retainer 10 when the roller 11 is press-fitted can be received by the retainer pressing member 6. Thereby, a deformation | transformation of the retainer 10 is suppressed and the roller 11 can be easily press-fitted.

  Further, the retainer 10 is driven and rotated by rotating the cylindrical member 4 in a state where the roller 11 is press-fitted into the fitting hole 10a and engaged with the groove 4a. Thereby, the position of the fitting hole 10a can be moved to the circumferential direction, and the roller 11 can be press-fitted in the fitting hole 10a one by one. At this time, since the rotating member 6a is composed of a roller follower, a bearing, or the like, the retainer 10 can be pressed so as not to interfere with the driven rotation of the retainer 10. By performing the steps (S31) to (S34) in order, the press-fitting of the roller 11 into the fitting hole 10a of the retainer 10 is completed. Then, a predetermined inspection process, a cleaning process, etc. are implemented, and the manufacturing method of the roller bearing concerning this embodiment is completed.

  Next, the configuration of the roller bearing assembling apparatus according to the first embodiment, the steps of the method for manufacturing the roller bearing, and the operation and effects thereof will be described. The roller bearing assembling apparatus 1 is a roller bearing assembling apparatus for assembling a roller bearing by fitting a roller 11 into a fitting hole 10 a of a retainer 10. The roller bearing assembling apparatus 1 is arranged so that the retainer 10 is sandwiched between a supporting means (supporting base 3) on which the retainer 10 is arranged, a columnar member 4 (holding means) that holds the roller 11, and the holding means. And a retainer pressing member 6 (pressing means) for pressing the retainer 10 from the side opposite to the holding means.

  The roller bearing manufacturing method is a roller bearing manufacturing method in which the roller 11 is assembled by fitting the roller 11 into the fitting hole 10 a of the retainer 10. In this roller bearing manufacturing method, the retainer 10 is pressed by the retainer pressing member 6 (pressing means) from the side opposite to the holding means for holding the roller 11 and the step of placing the retainer 10 on the supporting means (support base 3). And a step of fitting the roller 11 into the fitting hole 10a by rotating the holding means.

  According to the roller bearing assembling apparatus and the manufacturing method, the retainer 10 can be pressed from the side opposite to the cylindrical member 4 by the retainer pressing member 6 when the roller 11 is press-fitted into the fitting hole 10 a of the retainer 10. Thereby, the retainer 10 can be stably supported when the roller 11 is press-fitted regardless of the dimensions of the retainer 10. The roller bearing assembling apparatus and the roller bearing manufacturing method can be suitably used for assembling a roller bearing (cage and roller) having no outer ring. Further, the working time can be greatly shortened and the working efficiency can be improved as compared with the assembling apparatus and assembling method in which the retainer is rotated and the rollers are press-fitted one by one.

  In the roller bearing assembly device 1, the retainer pressing member 6 (pressing means) may be configured to be movable in a direction approaching the retainer 10 or a direction away from the retainer 10. Thereby, the position of the retainer pressing member 6 can be easily adjusted.

  In the roller bearing assembly device 1, the retainer pressing member 6 (pressing means) may be configured to press the retainer 10 at a plurality of locations. Thereby, the retainer 10 can be supported more stably.

  In the roller bearing assembly device 1, the retainer pressing member 6 (pressing means) may be configured to press both end portions in the axial direction of the retainer 10. Thereby, the retainer 10 can be supported more stably.

  In the roller bearing assembly device 1, the retainer pressing member 6 (pressing means) may include a rotating member 6 a that can be rotated by the rotation of the retainer 10. Thereby, when the rotation member 6a is made to contact | abut to the retainer 10, it can suppress that rotation of the retainer 10 is prevented.

  In the roller bearing assembling apparatus 1, the rotating member 6a may include at least one of a cam follower and a bearing. As described above, as the rotating member 6a, a general cam follower, a bearing, or the like can be adopted as a rotatable mechanical element.

(Embodiment 2)
Next, Embodiment 2 which is another aspect of the present invention will be described. The roller bearing assembling apparatus according to the second embodiment basically has the same structure as that of the roller bearing assembling apparatus 1 according to the first embodiment and has the same effects. However, in the first embodiment, the roller bearing assembly device is composed of the roller 11 and the retainer 10, whereas in the second embodiment, as shown in FIG. 8, the roller 11, the retainer 10, and the outer ring. 12 are different from each other in that it is a shell-type roller bearing assembling apparatus 2 composed of 12.

  The pressing means of the roller bearing assembling apparatus 2 includes a retainer pressing member 6, and the retainer pressing member 6 has an abutting member 6 c attached to the main body portion 6 b. The contact member 6 c contacts the outer peripheral portion of the outer ring 12 and supports the outer ring 12 and the retainer 10. Thus, the abutting member 6c does not need to be configured to be rotatable like the rotating member 6a, as long as the outer peripheral portion of the outer ring 12 can be supported. Note that the abutting member 6c may be configured to be rotatable like the rotating member 6a. Thus, the roller bearing assembly apparatus of the present invention is applicable to the assembly of various types of roller bearings.

(Embodiment 3)
Next, Embodiment 3 which is still another aspect of the present invention will be described. The roller bearing assembling apparatus according to the third embodiment basically has the same structure as that of the roller bearing assembling apparatus 1 according to the first embodiment and has the same effects. However, in the first embodiment, the roller 11 is press-fitted from the inner peripheral side of the retainer 10 to press the retainer 10 from the outer peripheral side (FIG. 5), whereas in the third embodiment, the outer periphery of the retainer 10 is pressed. The two are different in that the roller 11 is press-fitted from the side and the retainer 10 is pressed from the inner peripheral side.

  Referring to FIG. 9, the roller bearing assembly device 3 according to the third embodiment includes a support base 30 (support means) on which the retainer 10 is disposed, a columnar member 32 (hold means) that holds the roller 11, and a retainer. A pressing member 33 (pressing means). The columnar member 32 is disposed on the outer peripheral side of the retainer 10, and the retainer pressing member 33 is disposed on the inner peripheral side of the retainer 10. That is, the retainer pressing member 33 is disposed so as to sandwich the retainer 10 between the retainer pressing member 33 and the columnar member 32. Thereby, when the roller 11 is press-fitted, the retainer 10 can be pressed by the retainer pressing member 33 from the inner peripheral side of the retainer 10 (from the side opposite to the cylindrical member 32). As a result, as in the case of the first embodiment, the retainer 10 can be stably supported when the roller 11 is press-fitted.

  The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The roller bearing assembling apparatus and the roller bearing manufacturing method according to the present invention require a roller to be fitted into a fitting hole of the retainer while stably supporting retainers having various sizes. And in the manufacturing method of roller bearings, it can be applied particularly advantageously.

  1, 2, 3 Needle roller bearing assembly device, 3, 30 support base, 4,32 cylindrical member, 4a groove portion, 5 guide member, 6,33 retainer pressing member, 6a rotating member, 6b main body portion, 6c abutting member, 7 Supply path, 10 retainer, 10a fitting hole, 11 roller, 12 outer ring.

Claims (7)

A roller bearing assembly device for assembling a roller bearing by fitting a roller into a fitting hole of a retainer,
Support means on which the retainer is disposed;
Holding means for holding the roller;
An apparatus for assembling a roller bearing, comprising: a pressing unit that is disposed so as to sandwich the retainer between the holding unit and presses the retainer from the side opposite to the holding unit.   The roller pressing assembly apparatus according to claim 1, wherein the pressing unit is configured to be movable in a direction approaching the retainer or a direction away from the retainer.   The roller bearing assembly apparatus according to claim 1, wherein the pressing unit presses the retainer at a plurality of locations.   The roller pressing assembly apparatus according to claim 1, wherein the pressing unit presses both end portions in the axial direction of the retainer.   The roller pressing assembly apparatus according to any one of claims 1 to 4, wherein the pressing means includes a rotating member that is rotatable by rotation of the retainer.   The roller bearing assembly apparatus according to claim 5, wherein the rotating member includes at least one of a cam follower and a bearing. A roller bearing manufacturing method for assembling a roller bearing by fitting a roller into a fitting hole of a retainer,
Disposing the retainer on a support means;
Pressing the retainer by pressing means from the side opposite to the holding means for holding the roller;
And a step of fitting the roller into the fitting hole by rotating the holding means.

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