JP6948866B2 - Bearings and devices with bearings - Google Patents

Description

The present invention relates to bearings and devices including bearings.

A bearing having a plurality of rolling elements held by a cage between an inner race (inner ring) and an outer race (outer ring) is known. For example, Patent Document 1 describes a specific configuration of this type of bearing.

In Patent Document 1, the inner race is formed with a collar that contacts the end face of the conical roller and guides the rotation of the conical roller. A recess (engagement portion) is formed in the collar. On the other hand, one end of the cage is formed with a protruding portion that is curved inward in the radial direction of the bearing and is tapered.

In Patent Document 1, a cage holding the conical roller, which is a rolling element, is assembled to the inner race, and then the outer race is assembled so as to sandwich the conical roller and the cage between the inner race and the inner race. When the cage is assembled to the inner race, the protrusion of the cage is hung on the recess of the inner race. This prevents the cage and inner race from being separated before the outer race is assembled.

Jikkai Sho 58-165324

The bearing described in Patent Document 1 is provided so that the protruding portion of the cage does not come into contact with the concave portion of the inner race and wear during operation (when the inner race and the outer race are relatively rotating). A clearance is provided between the protrusion and the recess in the recess. In the state where the outer race is not assembled, the cage is only attached to the inner race by the protruding portion hanging on the concave portion of the inner race. Therefore, the cage and the conical roller held by the cage rattle against the inner race due to the clearance between the protrusion and the recess.

When the outer race is assembled with the conical roller tilted from the proper posture on the rolling surface of the inner race due to rattling, for example, the part other than the rolling surface of the outer race hits the peripheral surface of the conical roller. , There is a risk of indentation on the peripheral surface of the conical roller. Therefore, the operator needs to carefully assemble the outer race while paying attention to the posture of the cage with respect to the inner race, resulting in poor workability.

The present invention has been made in view of the above circumstances, and an object of the present invention is a device including bearings and bearings having a structure that makes it easy to determine the posture of the cage with respect to the inner race and the outer race at the time of assembly. Is to provide.

The bearing according to an embodiment of the present invention holds an outer race, an inner race concentrically arranged with the outer race, a plurality of rollers arranged between the outer race and the inner race, and a plurality of rollers. It is equipped with a cage. The cage has a guide portion that determines the posture of the cage with respect to the one race by abutting against one of the inner race and the outer race at the time of assembly.

In the bearing configured in this way, the guide portion of the cage is brought into contact with one of the inner race and the outer race, so that the posture of the cage with respect to the one race is determined. Therefore, for example, when assembling the other race to one race, a portion other than the rolling surface of the other race abuts on the peripheral surface of the roller, and a problem that an indentation is formed on the peripheral surface of the roller can be avoided.

Further, in one embodiment of the present invention, the cage may be configured to have a regulating portion that regulates the displacement of the rolling element in the rotation axis direction and in the direction orthogonal to the rotation axis direction. In this case, when the guide portion comes into contact with one of the races during assembly, the posture of the regulating portion with respect to the rolling surface of the one race is determined.

Further, in one embodiment of the present invention, the cage has a shape in which a pair of concentric annular bodies are connected by each of a plurality of columns arranged in the circumferential direction of the annular body at predetermined intervals. It may have a structure to have. In this case, the guide portion may be formed so as to project outward in the radial direction of the annular body in one of the pair of annular bodies over the entire circumference or a part of the annular body.

Further, the bearing according to the embodiment of the present invention may have a configuration in which the position of the cage with respect to the one race is determined by the guide portion abutting on one race at the time of assembly.

Further, in one embodiment of the present invention, one race has a reference surface that also faces upward when the rolling surface of the one race faces upward, and the cage is assembled at the time of assembly. When the guide portion comes into contact with the reference surface, the posture for one race may be determined.

Further, in one embodiment of the present invention, one race has a reference surface that also faces downward when the rolling surface of the one race faces downward, and the cage is assembled at the time of assembly. When the guide portion comes into contact with the reference surface, the posture for one race may be determined.

Further, in one embodiment of the present invention, the guide portion may have a guide surface that determines the posture of the cage with respect to the one race by making surface contact with the reference surface at the time of assembly.

Further, the device including the bearing according to the embodiment of the present invention faces the reference plane with the first member to which one race is assembled and the second member to which the other race of the inner race and the outer race is assembled. It is arranged at a position and includes a sealing member that seals a gap between the first member and the second member.
Device.

Further, in the device including the bearing according to the embodiment of the present invention, a member for moving the cage mounted on the seal member to the reference surface side at the time of assembly and bringing the guide portion into contact with the reference surface is further added. It may be provided.

Further, in the device provided with the bearing according to the embodiment of the present invention, the cage is placed on the seal member in a posture in which the guide portion faces the reference surface at the time of assembly, and the seal member is the first member. It is an annular member that seals the annular gap with the second member, and the means for making the contact is formed in the other race and is radially outward with respect to the rolling surface of the other race. A cage that protrudes and has an outer diameter that fits in the inner diameter of the seal, passes through the inner diameter of the seal when the second member is assembled to the first member, and is placed on the seal. The cage may be in contact with the rolling element, the cage and the rolling element may be moved toward the reference surface without changing the posture, and the guide portion may be brought into contact with the reference surface.

According to one embodiment of the present invention, there is provided a device including a bearing and a bearing having a configuration in which the posture of the cage with respect to the inner race and the outer race can be easily determined to be an appropriate posture at the time of assembly.

It is a partial cross-sectional view of the apparatus provided with the bearing which concerns on 1st Embodiment of this invention. It is a perspective view of the cage provided in the bearing which concerns on 1st Embodiment of this invention. It is a vertical cross-sectional view which shows the state in the process of assembling the bearing which concerns on 1st Example of this invention. It is sectional drawing of the apparatus which concerns on 2nd Example of this invention. It is a figure for demonstrating assembly of the apparatus which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the structure of the inner race attached to the 2nd member arranged on the lower side in the apparatus which concerns on 2nd Embodiment of this invention. It is a vertical cross-sectional view which shows the state in the process of assembling the bearing which concerns on another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Example 1]
The first embodiment relates to a bearing 10 that rotatably supports the first member 1A and the second member 1B. FIG. 1 is a cross-sectional view (cross-sectional view cut along a plane including the rotation axis AX1) showing a bearing 10 arranged in the device 1. If the device 1 is a speed reducer, the first member 1A is, for example, a component (case) that rotates at a rotation speed decelerated from the rotation speed of the servomotor by the power transmitted from the oscillating gear incorporated in the speed reduction mechanism. ). The second member 1B is, for example, a component (shaft) that swingably supports the swing gear, or a component (hold flange) that holds the swing gear between the swing gear and the component (shaft). Examples of the device 1 include machine tools, rolling mills, aircraft, automobiles, railways, and the like, in addition to the speed reducer.

As shown in FIG. 1, the bearing 10 is a roller bearing, and includes a plurality of rollers 110, a cage 120, an outer race (outer ring) 130, and an inner race (inner ring) 140.

The outer race 130 and the inner race 140 are annular members that are concentrically arranged at the center of the rotation shaft AX1 and have different diameters from each other. The outer race 130 and the inner race 140 are attached to the first member 1A and the second member 1B of the device 1 by press fitting or the like, respectively.

The outer race 130 and the inner race 140 each have a rolling surface 132 and a rolling surface 142 that are inclined with respect to the rotation axis AX1. A cage 120 is arranged between the rolling surface 132 of the outer race 130 and the rolling surface 142 of the inner race 140.

FIG. 2 is a perspective view of the cage 120 alone. As shown in FIG. 2, the cage 120 is a resin cage-shaped cage having a plurality of pockets P, and is formed in an annular shape.

The cage 120 has a first annular portion 122, a second annular portion 124, and a plurality of columns 126. The first annular portion 122 is an annular portion formed on one end side of the cage 120 in the axial direction of the bearing 10. The second annular portion 124 is an annular portion formed on the other end side of the cage 120 in the axial direction of the bearing 10. The second annular portion 124 is arranged concentrically with the first annular portion 122 and has a smaller diameter than the first annular portion 122.

The plurality of pillars 126 are arranged between the first annular portion 122 and the second annular portion 124 at predetermined intervals in the circumferential direction centered on the rotation axis AX1. Each pillar 126 extends between the first annular portion 122 and the second annular portion 124 to connect the first annular portion 122 and the second annular portion 124. As a result, the cage 120 is formed in a truncated cone shape as a whole.

The pocket P has a rectangular shape surrounded by a first annular portion 122, a second annular portion 124, and two adjacent pillars 126. Each pocket P holds the roller 110. In the bearing 1 according to the present embodiment, the cage 120 holding the rollers 110 in each pocket P is assembled to the outer race 130, and then the rollers 110 and the cage 120 are sandwiched between the outer race 130 and the cage 130. The inner race 140 is assembled. The roller 110 is housed in the pocket P from below the pocket P. Here, the width of the pocket P (the distance between the two adjacent pillars 126) is slightly narrower than the diameter of the roller 110. The roller 110 is pushed into, for example, the pocket P (between two adjacent pillars 126) so as not to fall out of the pocket P before assembling to the outer race 130.

The roller 110 rolls between the outer race 130 and the inner race 140 on the rolling surfaces of the rolling surface 132 and the rolling surface 142, and is inclined with respect to the rotating shaft AX1. Rotate around. As a result, the outer race 130 (and the first member 1A) and the inner race 140 (and the second member 1B) rotate relative to each other about the rotation shaft AX1 via the rollers 110.

Supplementally, in the pocket P, the roller 110 is restricted from being displaced in the rotation axis AX2 direction by the regulation surface 122A of the first annular portion 122 and the regulation surface 124A of the second annular portion 124. Further, in the pocket P, the roller 110 is restricted from being displaced in the direction orthogonal to the rotation axis AX2 by the side surfaces 126A, the rolling surface 132, and the rolling surface 142 of the two adjacent pillars 126. That is, the first annular portion 122, the second annular portion 124, and the pillar 126 function as a regulating portion that regulates the displacement of the roller 110 in the direction orthogonal to the rotation axis AX2 direction and the rotation axis AX2 direction.

FIG. 3 is a vertical cross-sectional view showing a state in which the bearing 10 according to the first embodiment is being assembled. In FIG. 3, the outer race 130 is attached to the first member 1A, and the rolling surface 132 is arranged so as to face upward. On the rolling surface 132, a cage 120 holding a plurality of rollers 110 and each roller 110 in each pocket P is arranged.

The outer race 130 has a reference surface 134 that is angled with respect to the rolling surface 132. The reference surface 134 is a surface connected to one end of the rolling surface 132, and also faces upward when the rolling surface 132 is in an upward facing posture. In other words, the reference surface 134 also faces downward when the rolling surface 132 is in a downward facing position. In the first embodiment, the reference surface 134 is a surface orthogonal to the rotation axis AX1, but in another embodiment, the reference surface 134 may be a surface having an angle other than orthogonal to the rotation axis AX1.

A guide portion G is formed on the outer peripheral portion of the first annular portion 122 over the entire circumference thereof. A guide surface GS is formed in the guide portion G at a position facing the reference surface 134 of the outer race 130.

The cage 120 is arranged on the outer race 130 so that the guide surface GS abuts (more specifically, surface contact) on the reference surface 134 of the outer race 130. When the guide portion G (guide surface GS) abuts on the predetermined position (reference surface 134) of the outer race 130, the position of the cage 120 with respect to the outer race 130 is determined and the posture of the cage 120 is determined.

Specifically, the guide surface GS of the guide portion G and the reference surface 134 of the outer race 130 both have an annular shape. Further, the guide surface GS and the reference surface 134 have substantially the same width in the radial direction. By arranging the cage 120 on the outer race 130 so that the entire guide surface GS is in surface contact with the entire reference surface 134, the position of the cage 120 with respect to the outer race 130 is appropriate as intended by design. It is decided in a proper position.

Further, for example, even when the cage 120 is to be assembled to the outer race 130 in a posture in which the guide surface GS is tilted with respect to the reference surface 134, the guide surface GS comes into surface contact with the reference surface 134 and thus tilts as described above. Is corrected, and the posture of the cage 120 with respect to the outer race 130 is determined to be the proper posture intended by design.

Since the position and posture of the cage 120 with respect to the outer race 130 is determined to be the proper position and posture, the outer race of the portion forming the pocket P (first annular portion 122, second annular portion 124 and two adjacent pillars 126). The position and posture of the 130 with respect to the rolling surface 132 are also appropriately determined. Since the roller 110 is pushed and held in the pocket P arranged at an appropriate position and posture with respect to the rolling surface 132, the position and orientation of the roller 110 on the rolling surface 132 are also appropriate. Become.

When the guide surface GS is brought into contact with the reference surface 134, the roller 110 pushed into the pocket P is in a state of being slightly floated with respect to the rolling surface 132 of the outer race 130. As shown in FIG. 3, when the inner race 140 is assembled from above the outer race 130, the time 110 that has been pushed into the pocket P is pushed downward by the rolling surface 142 of the inner race 140 and the rolling surface. It comes into contact with 132 and is held in the pocket P while a uniform load (preload) is applied between the rolling surface 132 and the rolling surface 142.

As described above, in the first embodiment, the position and posture of the cage 120 and each roller 110 with respect to the outer race 130 are appropriately determined by the guide surface GS coming into contact with the reference surface 134. Therefore, for example, a problem that a portion of the inner race 140 other than the rolling surface 142 abuts on the peripheral surface of the roller 110 and an indentation is formed on the peripheral surface of the roller 110 can be avoided. Therefore, the operator can easily assemble the inner race 140.

[Example 2]
The second embodiment will be described with reference to FIGS. 4 to 6. The second embodiment relates to a device 1'having a configuration in which the second members 1B and 1B'are attached to the first member 1A via two bearings 10a and 10b, respectively. FIG. 4A shows a cross-sectional view of the device 1'(a cross-sectional view cut along a plane including the rotation axis AX1). The device 1'is, for example, a speed reducer. When the device 1'is a speed reducer, the first member 1A is, for example, the case of the speed reducer, and the second member 1B and the second member 1B'are, for example, the shaft of the speed reducer and the hold flange of the speed reducer, respectively. Is. In addition to the speed reducer, examples of the device 1'include machine tools, rolling mills, aircraft, automobiles, railways, and the like.

As shown in FIG. 4A, in the device 1', the first member 1A and the second member 1B are mutually rotatable via the bearing 10a, and the first member 1A and the second member 1B are held rotatably via the bearing 10b. The first member 1A and the second member 1B'are held so as to be rotatable with each other. Both the bearing 10a and the bearing 10b have the same structure as the bearing 10 of the first embodiment. In the following, for convenience of explanation, the same reference numerals are used for the components equivalent to those in the first embodiment. Specifically, a is added to the end of the component number of the bearing 10 to the component of the bearing 10a, and b is added to the end of the number of the component of the bearing 10 to the component of the bearing 10b. And show. As shown in FIG. 4A, in the bearing 10a, the holding machine 120a is arranged with the first annular portion 122a side facing downward. Further, in the bearing 10b, the holding machine 120b is arranged with the first annular portion 122b side facing upward.

FIG. 4B shows an enlarged view of a lower portion (a portion including the bearing 10a and the seal portion 2) of the first member 1A. As shown in FIG. 4B, a bearing 10a is arranged in the lower portion of the device 1', and the first member 1A and the second member 1B can rotate with each other via the bearing 10a. It is held. At the bottom of the first member 1A, a seal portion 2 is attached between the inner surface of the first member 1A and the outer surface of the second member 1B, whereby the internal space of the device 1'is sealed from the outside. It has become.

5 (a) to 5 (e) are diagrams illustrating the assembly of the device 1'. First, as shown in FIG. 5A, the two outer races 130a and 130b are attached to the first member 1A (for example, the case of the speed reducer) by press fitting or the like.

Next, as shown in FIG. 5B, the cage 120a holding the rollers 110a is brought closer to the outer race 130a from below with the second annular portion 124a side facing upward. The roller 110a is housed in the pocket Pa from above the pocket Pa. The width of the pocket Pa (the distance between the two adjacent pillars 126a) is slightly narrower than the diameter of the rollers 110a. Therefore, the time 110a housed in the pocket Pa is supported by two adjacent pillars 126a, and does not fall out of the cage 120a through the pocket Pa.

Next, as shown in FIG. 5C, the seal portion 2 is attached to the first member 1A. Specifically, the seal portion 2 is an elastically deformable annular member, and has an outer diameter slightly larger than the inner diameter portion 1Aa of the first member 1A. The seal portion 2 is fitted by elastically deforming into the inner diameter portion 1Aa of the bottom portion of the first member 1A.

On the opposite side of the guide surface GSa of the guide portion Ga of the cage 120a, a mounting surface 122aB is formed over the entire circumference or a part of the circumferential direction of the first annular portion 122a. The cage 120a is mounted on the inner wall surface 2A of the seal member 2 attached to the first member 1A with the mounting surface 122aB as the bottom surface in a posture in which the guide surface GSa faces the reference surface 134a of the outer race 130a. NS. By placing the cage 120a on the inner wall surface 2A, the cage 120a is temporarily held by the first member 1A via the seal portion 2. Therefore, the cage 120a does not fall off from the first member 1A even when the cage 120a is released from being gripped by the gripping means (operator's hand, jig, etc.).

Here, with reference to FIG. 6, the configuration of the inner race 140a attached to the second member 1B (for example, the shaft of the speed reducer) by press fitting or the like will be described. The inner race 140a is formed with a collar portion 144a having an outer diameter that protrudes outward in the radial direction with respect to the rolling surface 142a and has an outer diameter that fits in the inner circumference of the seal portion 2. The collar portion 144a is formed over the entire circumference or a part of the inner race 140a in the circumferential direction, and has a claw portion 146a extending in a direction orthogonal to the radial direction of the inner race 140a (FIG. 6). See enlarged view).

As shown in FIGS. 5D and 5E, the second member 1B is assembled to the first member 1A. Specifically, the second member 1B is lifted toward the first member 1A (upward along the rotation axis AX1 direction) so that the flange portion 144a of the inner race 140a passes through the inner diameter portion of the seal portion 2. .. The cage 120a is placed on the seal portion 2 in a state where a part of the rollers 110a is located inward in the radial direction with respect to the inner diameter portion of the seal portion 2. When the flange portion 144a passes through the inner diameter portion of the seal portion 2, the claw portion 146a hangs on the end face of the roller 110a. When the second member 1B is lifted toward the first member 1A while the claw portion 146a is hooked on the end face of the roller 110a, the claw portion 146a slightly pushes the roller 110a up from the pillar 126a of the cage 120a and then the pillar 126a. The cage 120a and the roller 110a are pushed up toward the first member 1A.

The rollers 110a and the cage 120a are lifted toward the first member 1A by the inner race 140a (mainly the claw portion 146a) without changing the posture. Therefore, the guide surface GSa comes into surface contact (contact) with the reference surface 134a while maintaining a state of facing the reference surface 134a. That is, the collar portion 144a (claw portion 146a) has a function of moving the cage 120a mounted on the seal portion 2 toward the reference surface 134a and bringing the guide portion GSa into contact with the reference surface 134a.

As shown in FIG. 5 (e), when the guide surface GS comes into contact with the reference surface 134a, the positions and postures of the cage 120a and the rollers 110a with respect to the outer race 130a are determined to be appropriate positions and postures. As shown in FIG. 5E, the seal portion 2 seals the gap (annular gap) between the first member 1A and the second member 1B. By sealing the gap between the first member 1A and the second member 1B by the sealing portion 2, the lubricating oil filled around the bearings 10a and 10b can be prevented from leaking to the outside.

In the second embodiment, in the process of assembling the second member 1B to the first member 1A, the positions and postures of the cage 120a and the rollers 110a are naturally determined to be appropriate positions and postures. Therefore, for example, a problem that a portion other than the rolling surface 142a of the inner race 140a abuts on the peripheral surface of the roller 110a and an indentation is formed on the peripheral surface of the roller 110a can be avoided. Therefore, the operator can easily assemble the inner race 140a.

As shown in FIG. 5 (e), the cage 120b is placed on the outer race 130b so that the guide surface GSb contacts (contacts) the reference surface 134b of the outer race 130b. When the guide surface GS comes into contact with the reference surface 134b, the positions and postures of the cage 120b and the rollers 110b with respect to the outer race 130b are appropriately determined as in the first embodiment.

Then, as shown in FIG. 5 (e), the inner race 140b is attached to the second member 1B'(for example, a hold flange) by press fitting or the like.

Next, the inner race 140b is assembled to the outer race 130b in the same manner as the assembly flow described with reference to FIG. Since the positions and postures of the cage 120b and the roller 110b with respect to the outer race 130b are properly determined, for example, a portion of the inner race 140b other than the rolling surface 142b abuts on the peripheral surface of the roller 110b, and the peripheral surface of the roller 110b The problem of indentation is avoided. The operator can easily assemble the inner race 140b.

The above is the description of the exemplary embodiment of the present invention. The embodiments of the present invention are not limited to those described above, and various modifications can be made within the scope of the technical idea of the present invention. For example, the embodiment of the present application also includes a content obtained by appropriately combining an embodiment or the like or a self-explanatory embodiment or the like which is exemplified in the specification.

In the above embodiment, as shown in FIG. 2, the guide portion G is formed over the entire circumference of the first annular portion 122. On the other hand, in another embodiment, the guide portion G may be formed not only on the entire circumference of the first annular portion 122 but only on a part thereof. As an example, the guide portion G may have an angular dimension of about 20 ° and may be formed at two locations at 180 ° intervals or three locations at 120 ° intervals in the circumferential direction of the first annular portion 122. That is, by adopting a configuration in which the guide surface GS abuts on the reference surface 134 at at least two locations, the position and posture of the cage 120 with respect to the outer race 130 can be appropriately determined.

In the above embodiment, the outer race 130 and the inner race 140 rotate relative to each other with the guide surface GS in contact with the reference surface 134. On the other hand, in another embodiment, the outer race 130 and the inner race 140 may rotate relative to each other in a state where the guide surface GS does not contact the reference surface 134. Specifically, when assembling the inner race 140 to the outer race 130, a stronger preload is applied to the above embodiment. As a result, for example, a part of the inner race 140 comes into contact with the cage 120, and the cage 120 is elastically deformed so that the guide surface GS rises from the reference surface 134 by a predetermined amount. In this case, the outer race 130 and the inner race 140 rotate relative to each other with the guide surface GS not in contact with the reference surface 134. Therefore, wear of the guide surface GS and the reference surface 134 can be avoided.

Further, in the above embodiment, the outer race 130 of the bearing 10 and the first member 1A of the device 1 are separately formed, but in another embodiment, the outer race 130 and the first member 1A are integrated. May be formed in. Similarly, in the above embodiment, the inner race 140 of the bearing 10 and the second member 1B of the device 1 are separately formed, but in another embodiment, the inner race 140 and the second member 1B are integrated. May be formed in.

Further, in the above embodiment, the guide portion G is formed on the first annular portion 122 of the cage 120, but in another embodiment, the guide portion G (and the guide surface GS) is formed on the second annular portion 124. It may be formed. In this case, the reference surface of the outer race 130 (or the inner race 140) is formed at a position facing the guide surface GS of the second annular portion 124.

Further, in the above embodiment, the roller 110 is a cylindrical roller, but in another embodiment, it may be replaced with a conical roller.

Further, in the above embodiment, the inner race 140 is assembled in a state where the cage 120 and the roller 110 are determined to be in an appropriate position and posture with respect to the outer race 130, but in another embodiment, the inner race 140 is held. A configuration may be adopted in which the outer race is assembled with the vessel and roller determined at an appropriate position and posture with respect to the inner race. This configuration will be described with reference to FIG.

FIG. 7 is a view similar to that of FIG. 3, for explaining the assembly of the bearing 10 ″. As shown in FIG. 7, the inner race 140 ”has the same function as the reference surface 134. It has a reference surface 144 ", and the cage 120" has a guide surface GS "at a position facing the reference surface 144". In the embodiment of FIG. 7, the cage 120 "is arranged on the inner race 140" so that the guide surface GS "contacts the reference surface 144" of the inner race 140 ". Guide portion G" (guide surface). When the GS ") abuts on the predetermined position (reference surface 144") of the inner race 140 ", the position of the cage 120" with respect to the inner race 140 "is determined and the posture of the cage 120" is determined. Therefore, the operator can assemble the outer race 130 "to the inner race 140" without making an indentation on the peripheral surface of the roller 110 ".

1 Device 1A 1st member 1B 2nd member 2 Sealing member 10 Bearing 110 Roller 120 Cage 122 1st annular part 124 2nd annular part 126 Pillar 130 Outer race 132, 142 Rolling surface 134 Reference surface 140 Inner race

Claims (8)

A bearing, a first member and a second member rotatably held by the bearing, an annular seal member that seals an annular gap between the first member and the second member, and an annular seal member. It is a method of assembling a device equipped with
The bearing is
The outer race attached to the first member and
The inner race, which is arranged concentrically with the outer race and attached to the second member,
A plurality of rollers arranged between the outer race and the inner race,
A cage for holding the plurality of rollers, and a cage for holding the plurality of rollers.
The cage is
By abutting the outer race during assembly, against the outer race, determine the attitude of the cage, have a guide portion,
The inner race has an outer diameter that fits within the inner circumference of the seal member.
The process of attaching the outer race to the first member and
The process of attaching the inner race to the second member and
A step of fitting the seal member into the inner diameter portion of the first member and placing a cage holding the plurality of rollers on the seal member.
The inner race passes through the inner diameter portion of the seal member and comes into contact with the cage and the roller mounted on the seal member, and the posture of the cage and the roller is changed to the outer race side. The process of moving the guide portion without contacting the outer race and the process of bringing the guide portion into contact with the outer race.
including,
Method . The cage is
It has a regulating part that regulates the displacement in the rotation axis direction of the roller and in the direction orthogonal to the rotation axis direction.
By the guide portion comes into contact with the outer race, the attitude of the regulating portion for the rolling surface of the outer race is determined,
The method according to claim 1. The cage is
It has a shape in which a pair of concentrically arranged annular bodies are connected by each of a plurality of columns arranged side by side at predetermined intervals in the circumferential direction of the annular body.
The guide unit
One of the pair of annular bodies is formed so as to project outward in the radial direction of the annular body over the entire circumference or a part of the annular body.
The method according to claim 1 or 2. By the guide portion comes into contact with the outer race, it determines the position of said retainer relative to said outer race,
The method according to any one of claims 1 to 3. The outer race is
When the rolling surface of the outer race is in a downward-facing posture, it also has a downward-facing reference surface.
The cage is
When the guide portion comes into contact with the reference surface, the posture with respect to the outer race is determined.
The method according to any one of claims 1 to 4. The guide unit
It has a guide surface that determines the posture of the cage with respect to the outer race by making surface contact with the reference surface.
The method according to claim 5 . The inner race includes means for moving the cage mounted on the seal member toward the reference surface side at the time of assembly to bring the guide portion into contact with the reference surface.
The method according to claim 5 or 6 . The means for bringing the guide portion into contact with the reference surface is
It has an outer diameter that protrudes outward in the radial direction with respect to the rolling surface of the inner race and fits in the inner diameter portion of the seal portion.
In the step of bringing the guide portion into contact with the outer race, the guide portion passes through the inner diameter portion of the seal portion and comes into contact with the cage and the roller mounted on the seal portion, and the cage and the roller are contacted. Is moved to the reference surface side without changing its posture, and the guide portion is brought into contact with the reference surface.
The method according to claim 7 .

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