JP2008207259A - Shield attaching device, shield attaching method, and rolling bearing with shield attached by the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shield attaching device and method, which evenly caulks a shield without applying an unnecessary load on inner and outer rings of a bearing, and also to provide a rolling bearing with the shield adequately attached. <P>SOLUTION: The shield attaching device for attaching the shield 71 between the outer ring 72 and inner ring of the rolling bearing 70 includes: an attaching groove 78 formed on an inner circumferential surface of the outer ring 72; a pressing member 22 for pressing a pressed part 84 provided on an outer circumferential edge of the shield 71 facing the attaching groove 78 and caulking the pressed part 84 on the attaching groove 78; and a holding member 23 for holding a plurality of parts in a circumferential direction of a tapered part 85 connected to the pressed part 84 of the shield 71 or the whole circumference when the pressing member 22 presses the pressed part 84 of the shield 71. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shield mounting device and a shield mounting method for mounting a shield between an outer ring and an inner ring of a rolling bearing, and a rolling bearing to which a shield is mounted by the method.

  Between the outer ring and the inner ring of the rolling bearing, a lubricant (for example, oil or grease) sealed inside the bearing is prevented from leaking to the outside of the bearing, and foreign matter (for example, water or dust) is generated from the outside of the bearing. A shield is attached to prevent intrusion into the bearing.

  In the conventional shield mounting, a mounting groove is formed on the inner peripheral surface of the axial end of the outer ring, and a shield having a pressed portion on the outer peripheral edge is inserted inside the outer ring. From the standpoint of facilitating the insertion of the shield into the inner side of the outer ring, the maximum outer diameter of the shield before the mounting process is made slightly smaller than the minimum inner diameter of the axial end portion of the outer ring. Then, the pressed portion of the shield inserted inside the outer ring is pressed, and the pressed portion is crimped into the mounting groove, whereby the shield is fixed to the outer ring.

  Here, since the maximum outer diameter of the shield before the mounting process, that is, before the crimping process of the pressed part, is slightly smaller than the minimum inner diameter of the axial end of the outer ring, the outer ring is inserted when the shield is inserted inside the outer ring. There is a possibility that a gap is generated between the shield and the shield, and the shield is eccentric by this gap. If the pressed part of the shield is crimped to the mounting groove in an eccentric state, the pressed part is not evenly crimped, and the shield may be locally distorted, causing the shield to contact the cage or inner ring. is there.

Therefore, the maximum outer diameter of the shield is made slightly larger than the minimum inner diameter at the axial end of the outer ring, and the pressed part is elastically deformed toward the inner diameter while contacting the axial end of the outer ring, thereby self-shielding the shield. A method of centering has been proposed (see Patent Document 1).
Japanese Utility Model Publication No. 62-167926

  However, the shield mounting method disclosed in Patent Document 1 can prevent the eccentricity of the shield when the shield is inserted into the inner side of the outer ring. However, when the pressed portion is crimped, the shield is self-centered. In this case, the shield is not restrained at all and the shield may be eccentric.

  Further, in the shield mounting method disclosed in Patent Document 1, when the shield is self-centered, the pressed portion of the shield is elastically deformed to the inner diameter side while being in contact with the axial end portion of the outer ring. A load acts on the outer ring toward the outer diameter side. Such a load may impair the roundness of the outer ring. If the operation of the bearing is continued while the roundness of the outer ring is impaired, for example, early peeling may occur, and the durability of the bearing may be reduced.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a shield mounting device and a shield mounting method capable of uniformly crimping a shield, and a rolling bearing in which the shield is appropriately mounted. Is to provide.

The above object is achieved by the following (1) to (5) shield mounting apparatus and shield mounting method according to the present invention, and a rolling bearing having a shield mounted by the method.
(1) A shield mounting device for mounting a shield between an outer ring and an inner ring of a rolling bearing, wherein a mounting groove is formed on an inner peripheral surface of the outer ring or an outer peripheral surface of the inner ring, and the mounting groove is opposed to the mounting groove. A pressing member that presses a pressed portion provided on an outer peripheral edge or an inner peripheral edge of the shield and presses the pressed portion into the mounting groove; and the pressing member presses the pressed portion of the shield. And a holding member for holding a plurality of circumferential portions or the entire circumference of the tapered portion provided continuously with the pressed portion of the shield.
(2) The pressing member and the holding member are integrally displaced, and the holding member is movable relative to the pressing member, and the elastic member biases the holding member toward the shield. The shield mounting device according to (1), further comprising:
(3) A shield mounting method for attaching a shield between an outer ring and an inner ring of a rolling bearing, wherein a mounting groove is formed on an inner peripheral surface of the outer ring or an outer peripheral surface of the inner ring, and the mounting groove faces the mounting groove. When the pressed portion provided on the outer peripheral edge or the inner peripheral edge of the shield is pressed to crimp the pressed portion into the mounting groove, and the pressed portion of the shield is pressed, the continuous pressed portion is connected to the pressed portion. A shield mounting method characterized by holding a plurality of circumferential positions or the entire circumference of the tapered portion.
(4) The said shield is shape | molded to the diameter which a clearance gap produces between the inner peripheral surface of the said outer ring in which the said attachment groove | channel is formed, or the outer peripheral surface of the said inner ring, and the said to-be-pressed part. The shield mounting method described in 4.
(5) A rolling bearing, wherein a shield is attached by the shield attachment method described in (3) or (4) above.

  According to the shield mounting device and the shield mounting method of the present invention, when the pressing member that presses the pressed portion of the shield and crimps it to the mounting groove presses the pressed portion, the holding member presses the tapered portion of the shield around the circumference. It is made to hold | maintain in several directions or the perimeter. Therefore, even if the shield is eccentric, the shield is centered, and the pressed portion is pressed while being restrained by the apparatus. Thereby, the to-be-pressed part of a shield can be crimped equally with a pressing member.

  In the shield mounting device of the present invention, the pressing member and the holding member may be driven separately, but the pressing member and the holding member are integrally displaced and the holding member is configured to be movable relative to the pressing member. Is preferred. If comprised in this way, after a holding member hold | maintains the taper part of a shield, only a pressing member can be displaced and a to-be-pressed part of a shield can be pressed, the drive device for holding members can be omitted, and the apparatus can be simplified. Can be planned. If the holding member is urged toward the shield by the elastic member, the tapered portion can be reliably held without applying an excessive load to the shield, which is more preferable.

  In the shield mounting method of the present invention, it is preferable that the shield is molded to have a diameter that creates a gap between the inner peripheral surface of the outer ring where the mounting groove is formed or the outer peripheral surface of the inner ring and the pressed portion of the shield. According to this, the shield can be inserted between the inner and outer rings without applying an unnecessary load, the roundness of the inner and outer rings can be maintained, and the deterioration of durability can be avoided.

  And since the rolling bearing with the shield attached by the shield attaching method of the present invention is crimped evenly on the pressed portion without the eccentricity of the shield, the shield is attached to the cage or inner ring by local distortion. There is no inconvenience of contact.

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

(First embodiment)
FIG. 1 is a cross-sectional view of a rolling bearing having a shield attached by the shield attaching method of the present invention, FIG. 2 is a side view of a shield attaching device for attaching the shield to the rolling bearing of FIG. 1, and FIG. FIGS. 4A and 4B are main part enlarged cross-sectional views for explaining a process of attaching a shield to a rolling bearing by the shield attachment device of FIG.

  As shown in FIG. 1, the rolling bearing 70 includes an outer ring 72, an inner ring 73, balls 74 which are a plurality of rolling elements disposed between the outer ring 72 and the inner ring 73, and a plurality of balls. It is a ball bearing provided with the retainer 75 which hold | maintains 74 at equal intervals in the circumferential direction. A shield 71 is attached between the outer ring 72 and the inner ring 73 at both axial ends of the rolling bearing 70 so as to sandwich the balls 74 in the axial direction.

  On the inner peripheral surface 76 of the outer ring 72, an outer ring raceway surface 77 having an arcuate contour in a cross section including the shaft center is formed at the axial center. On the other hand, an outer ring surface 80 of the inner ring 73 is formed with an inner ring raceway surface 81 that faces the outer ring raceway surface 77 and has an arcuate contour in a cross section including the axis. The ball 74 is disposed between the raceway surfaces 77 and 81 so as to be freely rollable.

  In addition, on the inner peripheral surface 76 of the outer ring 72, mounting grooves 78 are formed on the both sides in the axial direction of the outer ring raceway surface 77 so as to crimp a pressed portion 84 of a shield 71 described later.

  The shield 71 is a metal member formed in an annular shape, and a pressed portion 84 is provided on the outer peripheral edge portion thereof, and a tapered portion 85 is provided on the inner diameter side of the pressed portion 84. The pressed portion 84 is formed by winding the outer peripheral edge toward the outside of the bearing. Further, the taper portion 85 is formed in a conical shape with the top side facing the outside of the bearing. The shield 71 is fixed to the outer ring 72 by pressing the pressed portion 84 into the mounting groove 78 of the outer ring 72, and the inner peripheral edge thereof is disposed in a non-contact manner with a slight gap on the outer peripheral surface 80 of the inner ring 73. I am letting.

  The shield 71 of the present embodiment is a metal member formed in an annular shape, and has an inner peripheral edge thereof arranged to be opposed to the outer peripheral surface 80 of the inner ring 73 in a non-contact manner. The shield is not limited to this, and any shield that can crimp the pressed portion may be used. For example, a lip made of a rubber material or a resin material having elasticity may be provided on the inner peripheral edge of the shield 71 and the lip may be brought into sliding contact with the outer peripheral surface 80 of the inner ring 73.

  As shown in FIG. 2, the shield mounting device 10 for attaching the shield 71 to the rolling bearing 70 includes a crimping die 14 for crimping the pressed portion 84 of the shield 71, and an elevating mechanism 12 for displacing the crimping die 14. The gantry 11 that supports the lifting mechanism 12 is generally configured.

  The gantry 11 includes a base 15 on which the rolling bearing 70 is placed, a column portion 16 erected on the base 15, and an upper end portion of the column portion 16 so as to cover the upper side of the rolling bearing 70 placed on the base 15. And a top plate portion 17 protruding from the top.

  The elevating mechanism 12 includes a servo motor 13 fixed to the top plate portion 17 of the gantry 11, a ball screw 18 that is connected to the servo motor 13 with the axial direction arranged in the vertical direction, and a nut screwed into the ball screw 18. It has a member 19 and a guide 20 that extends in parallel with the ball screw 18 and is fixed to the column portion 16 of the gantry 11. The nut member 19 is engaged with the guide 20 so as to be movable in the extending direction of the guide 20. When the ball screw 18 is rotated by being driven by the servo motor 13, the nut member 19 is guided by the guide 20 and is axially directed to the ball screw 18. It is displaced to.

  3 and 4, the caulking die 14 is attached to the lower end portion of the nut member 19, and when the ball screw 18 is rotated by being driven by the servo motor 13, the ball screw 18 and the nut member 19 are rotated. It is displaced in the axial direction, that is, in the vertical direction. The crimping die 14 has a central shaft 21, a pressing member 22, a holding member 23, and an elastic member 25.

  The center shaft 21 has an attachment shaft portion 26 formed at the upper end portion. The caulking die 14 is attached to the nut member 19 by, for example, gripping the attachment shaft portion 26 with a chuck device or the like provided on the nut member 19. The central shaft 21 includes a first shaft portion 27, a second shaft portion 28, a third shaft portion 29, and a fourth shaft that are connected to the mounting shaft portion 26 and have a stepwise smaller diameter toward the lower end side of the central shaft 21. A shaft portion 30 is formed.

  The pressing member 22 is formed in a cylindrical shape, and is positioned with respect to the central shaft 21 by fitting the upper end portion to the second shaft portion 28 of the central shaft 21 and bringing the upper end surface into contact with the first shaft portion 27. It is fixed coaxially to the central shaft 21 using bolts or the like. The lower end portion of the pressing member 22 is formed in a taper shape on the inner peripheral side so as to gradually become thinner toward the lower end, and the protruding end of the lower end portion is a mouth portion of the outer ring 72 (the outer ring 72 of the outer ring 72). A portion that is outside the attachment groove 78 and adjacent to the attachment groove 78 is formed to have an outer diameter smaller than the inner diameter of 79, and enters the mouth 79 to press the pressed portion 84 of the shield 71. This is part 32.

  The holding member 23 is formed in a cylindrical shape, is coaxially accommodated between the pressing member 22 and the fourth shaft portion 30 of the central shaft 21, and has an inner peripheral surface of the pressing member 22 and an outer periphery of the fourth shaft portion 30. It is possible to move up and down as the surface slides. A disc-shaped guide member 24 fitted into the inner ring 73 of the rolling bearing 70 is coaxially fixed to the lower end of the fourth shaft portion 30, and the holding member 23 is secured to the fourth shaft by the guide member 24. It is retained from the portion 30.

  An elastic member 25 such as a coil spring is provided between the upper end of the holding member 23 coaxially accommodated between the pressing member 22 and the fourth shaft portion 30 of the central shaft 21 and the second shaft portion 28 of the central shaft 21. Is intervening. The elastic member 25 biases the holding member 23 toward the guide member 24.

  On the periphery of the lower end of the holding member 23, holding projections 35 projecting downward are formed at a plurality of locations in the circumferential direction or over the entire circumference. In a state where the holding member 23 is in contact with the guide member 24, that is, in a state where it is positioned at the lowest point relative to the pressing member 22, the holding protrusion 35 is located below the pressing portion 32 of the pressing member 22. It protrudes. Further, the holding projection 35 is formed in a tapered shape so that its inner peripheral side is aligned with the tapered portion 85 of the shield 71.

  Next, with reference to FIG. 4, the process of attaching the shield 71 to the rolling bearing 70 by the shield attaching device 10 will be described.

  The rolling bearing 70 to which the shield 71 is not attached is placed at a predetermined position of the base 15 of the gantry 11. The predetermined position is a position where the axis of the rolling bearing 70 coincides with the axis of the pressing member 22 and the holding member 23. A shield 71 is inserted between the outer ring 72 and the inner ring 73. The shield 71 is disposed in a state in which the connection portion between the pressed portion 84 and the tapered portion 85 is supported by the shoulder portion 78 a of the mounting groove 78 of the outer ring 72 and the pressed portion 84 is opposed to the mounting groove 78.

  Here, as shown in FIG. 4A, the pressed portion 84 of the shield 71 has an outer diameter slightly smaller than the inner diameter of the mouth portion 79 of the outer ring 72. Thereby, when the shield 71 is inserted between the outer ring 72 and the inner ring 73, it is possible to avoid a load from acting on the outer ring 72, and the roundness of the outer ring 72 is maintained.

  Next, the ball screw 18 rotates and the caulking die 14 moves down together with the nut member 19. In this embodiment, first, the guide member 24 fixed to the lower end of the center shaft 21 of the crimping die 14 is fitted into the inner ring 73, and the axis of the rolling bearing 70 is the axis of the pressing member 22 and the holding member 23. The rolling bearing 70 is positioned at the predetermined position so as to coincide with each other.

  Prior to the caulking die 14 being lowered and the pressing member 22 coming into contact with the pressed portion 84 of the shield 71 at the pressing portion 32, the holding member 23 first protrudes downward from the pressing portion 32. At 35, the taper portion 85 of the shield 71 is contacted. The inner peripheral side of the holding projection 35 is formed into a tapered shape that matches the tapered portion 85, and the shield 71 is moved so that the holding projection 35 and the tapered portion 85 are aligned in the process of lowering the holding member 23. The As a result, the shield 71 is positioned in a state where its axis is aligned with the axis of the holding member 23, that is, the axis of the pressing member 22, and is held by the holding member 23 biased by the elastic member 25. The At this point, both the rolling bearing 70 and the shield 71 are arranged coaxially with the pressing member 22.

  Then, as shown in FIG. 4B, the crimping die 14 continues to descend, the pressing member 22 contacts the pressed portion 84 of the shield 71 at the pressing portion 32, and the pressed portion 84 faces downward. Press. At this time, the holding member 23 is fixed in a state where the taper portion 85 of the shield 71 is held, and moves backward relative to the pressing member 22, but is biased toward the shield 71 by the elastic member 25. Thus, the taper portion 85 is securely held without causing an excessive load to act on the shield 71. The pressed portion 84 pressed downward is plastically deformed so as to bulge to the outer diameter side and is swaged into the mounting groove 78 of the outer ring 72.

  As described above, according to the shield mounting device 10 and the shield mounting method of the present embodiment, the pressing member 22 that presses the pressed portion 84 of the shield 71 and crimps it against the mounting groove 78 presses the pressed portion 84. At this time, the holding member 23 holds the taper portion 85 of the shield 71 over a plurality of locations in the circumferential direction or over the entire circumference. Therefore, even if the shield 71 is eccentric, it is centered, and the pressed portion 84 is pressed while being restrained by the shield mounting device 10. Thereby, the pressed portion 84 of the shield 71 can be uniformly crimped by the pressing member 22.

  Further, in the shield mounting device 10 of the present embodiment, the pressing member 22 and the holding member 23 are integrally displaced, and the holding member 23 is configured to be relatively movable with respect to the pressing member 22. By being configured in this manner, after the holding member 23 holds the tapered portion 85 of the shield 71, only the pressing member 22 can be displaced and the pressed portion 84 of the shield 71 can be pressed. The apparatus can be omitted and the apparatus 10 can be simplified. Since the holding member 23 is urged toward the shield 71 by the elastic member 25, the taper portion 85 can be reliably held without applying an excessive load to the shield 71.

  Further, in the shield attachment method of the present embodiment, the shield 71 is formed with a diameter that creates a gap between the mouth portion 79 of the outer ring 72 where the attachment groove 78 is formed and the pressed portion 84 of the shield 71. According to this, it is possible to insert the shield 71 between the inner and outer rings 72 and 73 without applying an unnecessary load, and it is possible to maintain the roundness of the outer ring 72 and avoid a decrease in durability. .

  In the rolling bearing 70 to which the shield 71 is attached by the shield attachment method of the present embodiment, since the pressed portion 84 is uniformly crimped without the shield 71 being eccentric, the shield is caused by local distortion. There is no inconvenience of contacting the cage or inner ring.

(Second Embodiment)
FIG. 5 is a side view of the second embodiment of the shield mounting device of the present invention. In the following description, components that are the same as those of the shield mounting device 10 according to the first embodiment described above or functionally similar components are denoted by the same or corresponding reference numerals in the drawings, and the description is simplified. Or omit.

  As shown in FIG. 5, the shield mounting device 40 of the present invention is different from the shield mounting device 10 of the first embodiment described above in that it further includes a shield insertion guide 41.

  The shield insertion guide 41 is attached to the outer ring 72 of the rolling bearing 70 placed at the predetermined position of the base 15, and gradually decreases in diameter from the circular opening on the upper surface and continues to the mouth part 79 of the outer ring 72. A tapered insertion hole 42 is formed.

  According to the shield mounting device 40 of this embodiment, the shield 71 can be easily inserted into the rolling bearing 70 by providing the shield insertion guide 41. Since the other effect is the same as that of the shield attachment apparatus 10 of 1st Embodiment, it abbreviate | omits.

(Third embodiment)
FIG. 6 is a side view of a third embodiment of the shield mounting device of the present invention. In the following description, components that are the same as those of the shield mounting device 10 according to the first embodiment described above or functionally similar components are denoted by the same or corresponding reference numerals in the drawings, and the description is simplified. Or omit.

  As shown in FIG. 6, the shield mounting device 50 of the present embodiment is the same as the shield mounting device 10 of the first embodiment described above in that a cylinder device 51 is used as a lifting mechanism that displaces the caulking die 14 in the vertical direction. Is different.

  The cylinder device 51 has a piston rod 52 that is fixed to the top plate portion 17 of the gantry 11 and is displaced in the vertical direction. The caulking die 14 is attached to the lower end portion of the piston rod 52. In addition, the drive source of the cylinder apparatus 51 is not specifically limited, For example, fluid pressure, such as hydraulic pressure, water pressure, and air pressure, can be used as a drive source.

  According to the shield mounting device 50 of the present embodiment, the cylinder motor 51 is used as the lifting mechanism that displaces the crimping die in the vertical direction, so that the servo motor 13, the ball screw 18, the nut member 19, and the guide of the first embodiment are used. Compared to the lifting mechanism 12 configured with 20, the mechanism can be simplified. Since the other effect is the same as that of the shield attachment apparatus 10 of 1st Embodiment, it abbreviate | omits.

(Fourth embodiment)
FIG. 7 is a side view of the fourth embodiment of the shield mounting device of the present invention. In the following description, components that are the same as those of the shield mounting device 10 according to the first embodiment described above or functionally similar components are denoted by the same or corresponding reference numerals in the drawings, and the description is simplified. Or omit.

  As shown in FIG. 7, the shield mounting device 60 of the present embodiment separates the crimping die 14 from the nut member 19 and separately supports the crimping die 14 so that it can be displaced in the vertical direction using a guide mechanism 61. This is different from the shield mounting device 10 of the first embodiment described above.

  The guide mechanism 61 is installed on a support member 62 to which the caulking die 14 is attached, a support 63 that is erected on the base 15 of the gantry 11 and is inserted into an insertion hole formed in the support member 62, and is wound around the support 63. The coil spring 64 is interposed between the support member 62 and the base 15. The support member 62 is pressed by the nut member 19 lowered with the rotation of the ball screw 18 and displaced downward along the support 63. When the nut member 19 is raised, the support member 62 is pressed against the coil spring 64 to be restored. Then, it is displaced upward along the column 63. The caulking die 14 is attached to the support member 62 and is displaced together with the support member 62 in the vertical direction.

  When the pressed portion 84 of the shield 71 is crimped to the mounting groove 78 of the outer ring 72, a load acts on the gantry 11, and the load may cause the column portion 16 and the top plate portion 17 of the gantry 11 to bend. is there. When the caulking die 14 is attached to the nut member 19, the shaft center of the rolling bearing 70 and the shaft of the pressing member 22, the holding member 23, and the shield 71 held by the holding member 23 due to the bending of the gantry 11. There may be a case where a slight deviation occurs in the center and the pressing of the pressed portion 84 to the mounting groove 78 is not evenly performed.

  On the other hand, according to the shield mounting device 60 of the present embodiment, the caulking die 14 is separated from the nut member 19 and separately supported by the guide mechanism 61 so that the caulking die 14 can be displaced in the vertical direction. Therefore, regardless of the bending of the gantry 11, the axial center of the rolling bearing 70 and the axis of the pressing member 22, the holding member 23, and the shield 71 held by the holding member 23 can be consistently secured. Thus, the pressed portion 84 can be uniformly crimped to the mounting groove 78. Since the other effect is the same as that of the shield attachment apparatus 10 of 1st Embodiment, it abbreviate | omits.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, in the embodiment described above, the mounting groove 78 is formed in the outer ring 72 of the rolling bearing 70, the pressed portion 84 is provided on the outer peripheral edge of the shield 71 facing the mounting groove 78, and the pressed portion 84 is formed in the mounting groove 78. Although the configuration in which the shield 71 is fixed to the outer ring 72 by crimping is shown, the present invention is not limited to this. In the present invention, a mounting groove is formed in the inner ring 73 of the rolling bearing 70, a pressed portion is provided on the inner peripheral edge of the shield 71 facing the inner ring 73, and the pressed portion is crimped to the mounting groove of the inner ring 73. The present invention can also be applied to the case where the inner ring 73 is fixed.

It is sectional drawing of the rolling bearing to which the shield was attached by the shield attachment method of this invention. It is a side view of the shield attachment apparatus which attaches a shield to the rolling bearing of FIG. It is a principal part expanded sectional view of the shield attachment apparatus of FIG. (A) And (B) is a principal part expanded sectional view explaining the process of attaching a shield to a rolling bearing with the shield attachment apparatus of FIG. It is a side view of 2nd Embodiment of the shield attachment apparatus of this invention. It is a side view of 3rd Embodiment of the shield attachment apparatus of this invention. It is a side view of 4th Embodiment of the shield attachment apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shield attachment apparatus 22 Press member 23 Holding member 32 Press part 35 Holding protrusion 25 Elastic member 70 Rolling bearing 71 Shield 72 Outer ring 73 Inner ring 78 Mounting groove 84 Pressed part 85 Tapered part

Claims (5)

A shield mounting device for attaching a shield between an outer ring and an inner ring of a rolling bearing,
A mounting groove is formed on the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring,
A pressing member that presses a pressed portion provided on an outer peripheral edge or an inner peripheral edge of the shield facing the mounting groove and crimps the pressed portion into the mounting groove;
When the pressing member presses the pressed portion of the shield, a holding member that holds a plurality of circumferential positions or the entire circumference of the tapered portion provided continuously to the pressed portion of the shield;
A shield mounting device characterized by comprising: The pressing member and the holding member are integrally displaced and the holding member is movable relative to the pressing member.
The shield mounting apparatus according to claim 1, further comprising an elastic member that biases the holding member toward the shield. A shield mounting method for attaching a shield between an outer ring and an inner ring of a rolling bearing,
A mounting groove is formed on the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring,
Pressing the pressed portion provided on the outer peripheral edge or the inner peripheral edge of the shield facing the mounting groove to crimp the pressed portion into the mounting groove;
When pressing the pressed portion of the shield, the shield mounting method is characterized in that a plurality of circumferential portions or the entire circumference of the tapered portion provided continuously to the pressed portion are held.   4. The shield according to claim 3, wherein the shield is formed to have a diameter in which a gap is generated between an inner peripheral surface of the outer ring where the mounting groove is formed or an outer peripheral surface of the inner ring and the pressed portion. How to install.   A rolling bearing comprising a shield attached by the shield attaching method according to claim 3 or 4.

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