JP2009150447A - Insertion tool for full roller bearing and insertion method of full roller bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insertion tool for a full roller bearing and an insertion method of the full roller bearing capable of preventing skew of rollers which occurs when the full roller bearing is inserted in a bearing insertion hole, without deteriorating yield. <P>SOLUTION: The insertion tool 1 for the full roller bearing is used for inserting a shell shape full roller bearing 10 comprising an outer ring 11, and a roller group having a plurality of rollers 12 disposed on a raceway surface 11a of the outer ring 11 in a circular shape, into the bearing insertion hole 31. The insertion tool 1 for the full roller bearing includes a pressing part 3 pressing the outer ring 11 toward the bearing insertion hole 31, and a cylindrical insertion part 4 inserted to an inner circumference side of the roller group. The insertion part 4 has outer diameter smaller than inscribed circle diameter D of the roller group of the shell shape full roller bearing 10, and is provided with an elastic body 6 at an outer circumference part. The rollers 12 is pressed against the raceway surface 11a of the outer ring 11 by elastic force of the elastic body 6 to retain the shell shape full roller bearing 10 when the insertion part 4 is inserted to the inner circumference side of the roller group. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a full-roller bearing insertion jig and a full-roller bearing insertion method, and more particularly to full-roller bearing insertion that can prevent roller skew that occurs when a full-roller bearing is inserted into a bearing insertion hole. The present invention relates to a jig and a method for inserting a full roller bearing.

  Compared with roller bearings with a cage, a full roller bearing can arrange a larger number of rollers on the raceway surface of the outer ring than the roller bearing with a cage, and has an extremely high load bearing capability. Moreover, since there is no inner ring, a bearing having a smaller outer shape can be used as compared with a rolling bearing provided with an inner ring. For this reason, it is often used in places where a high load capacity is required or where the bearing arrangement space is small, such as for holding a pinion shaft of an automatic transmission or for holding a tenth axis of a drive shaft.

  In the full roller bearing, a slight gap is formed in the circumferential direction between the rollers so that the rollers can rotate. For this reason, for example, when inserting a full roller bearing into a bearing insertion hole formed in a housing of an automatic transmission, if skew occurs that the roller tilts from the normal rotation shaft, the tilted roller serves as a support, This roller and the peripheral rollers may not be able to rotate. Conventionally, in order to prevent this, a substantially cylindrical roller holder that presses the roller against the inner raceway surface of the outer ring is inserted into the inner circumference of the roller (see, for example, Patent Document 1).

  Also, when automating the process of inserting the full roller bearing into the bearing insertion hole formed in the housing of the automatic transmission (that is, pressing the full roller bearing by a load adding means such as a press machine other than human power to Conventionally, a full-roller bearing insertion jig 1 shown in FIG. 5 is used when a full-roller bearing is inserted into a bearing insertion hole formed in a housing of the machine. The full roller bearing insertion jig 1 is composed of a plurality of substantially cylindrical cylindrical portions. A pressing portion 3 (second cylindrical portion) for pressing the outer ring 11 of the shell-type full roller bearing 10 toward the bearing insertion hole is provided below the cylindrical portion 2 (first cylindrical portion) having the largest outer shape. Is formed. An insertion portion 4 (third cylindrical portion) that holds the inner peripheral side of the roller group (a plurality of rollers 12 arranged in an annular shape) of the shell-type full roller bearing 10 is formed below the pressing portion. Has been. Further, on the upper portion of the cylindrical portion 2, a grip portion 5 is formed which is gripped by, for example, a head portion 20 of a press machine that applies a load to the outer ring 11 of the shell-type full roller bearing 10.

  The full roller bearing insertion jig 1 is an inner peripheral side of the roller group of the shell type full roller bearing 10 in a state where the grip portion 5 of the full roller bearing insertion jig 1 is gripped by the head portion 20 of the press machine. The insertion part 4 is inserted into the. Then, a load applied by the press machine is applied to the outer ring 11 of the shell-type full roller bearing 10 via the pressing portion 3 and is inserted into the bearing insertion hole 31 of the housing 30 of the automatic transmission.

  Further, a slight gap is formed between the inner peripheral side of the roller group of the shell-type full roller bearing 10 and the insertion portion 4 to such an extent that the shell-type full roller bearing 10 can be held. That is, the outer diameter of the insertion portion 4 is smaller than the inscribed circle diameter D of the roller group of the shell-type bearing 10 (the inner diameter of the roller when the roller 12 is pressed against the inner peripheral raceway surface 11a of the outer ring 11). Is formed. Due to this gap, the insertion portion 4 is inserted into the inner peripheral side of the roller group of the shell-type full roller bearing 10, and the insertion portion 4 is removed after the shell-type full roller bearing 10 is inserted into the bearing insertion hole 31 of the housing 30. As a result, the yield is improved.

Japanese Patent Laid-Open No. 2002-39201 (second page, FIGS. 6 and 7)

  However, since the conventional full-roller bearing insertion jig 1 is formed such that the outer diameter of the insertion portion 4 is smaller than the inscribed circle diameter D of the roller group of the shell-type bearing 10 in order to improve the yield. When the shell-type full roller bearing 10 is inserted into the bearing insertion hole 31 of the transmission housing 30, there is a problem in that roller skew occurs and the roller cannot be rotated.

  On the contrary, in order to prevent roller skew that occurs when the shell-type full roller bearing 10 is inserted into the bearing insertion hole 31 of the housing 30 of the automatic transmission, When the clearance between the insertion portion 4 and the insertion portion 4 is eliminated (when the outer diameter of the insertion portion 4 is formed with an outer diameter equal to or larger than the inscribed circle diameter D of the roller group of the shell-type bearing 10), the shell-type full roller It becomes difficult to insert the insertion portion 4 into the inner peripheral side of the roller group of the bearing 10 and to remove the insertion portion 4 after the shell-type full roller bearing 10 is inserted into the bearing insertion hole 31 of the housing 30. When trying to forcibly pull out, there is a problem that the inner peripheral raceway surface 11a of the roller 12 and the outer ring 11 is deformed and damaged, and the yield deteriorates.

  The present invention has been made in order to solve the above-described problems, and is capable of preventing the roller skew that occurs when the full roller bearing is inserted into the bearing insertion hole without deteriorating the yield. An object of the present invention is to provide a roller bearing insertion jig and a method of inserting a full roller bearing.

  An insertion jig for a full roller bearing according to the present invention is a total roller bearing for inserting a full roller bearing comprising an outer ring and a group of rollers in which a plurality of rollers are arranged in an annular shape on a raceway surface of the outer ring into a bearing insertion hole. An insertion jig for roller bearings, wherein the insertion jig for full roller bearings is provided on the inner peripheral side of the annular roller group, and a pressing portion that presses the outer ring in the axial direction toward the bearing insertion hole. The insertion portion includes a cylindrical insertion portion, and the insertion portion has an outer diameter smaller than an inscribed circle diameter of the annular roller group, and an outer peripheral portion is provided with an elastic body. In the state inserted in the inner peripheral side of the annular roller group, the roller is pressed against the raceway surface of the outer ring by the elastic force of the elastic body to hold the full roller bearing.

  A plurality of the elastic bodies are provided on the outer peripheral portion of the insertion portion so as to be separated in the axial direction.

  Further, the method for inserting a full roller bearing according to the present invention is such that the insertion portion of the full roller bearing insertion jig is inserted into the inner peripheral side of the annular roller group, and is provided on the outer peripheral portion of the insertion portion. The roller is pressed against the raceway surface of the outer ring by the elastic force of the formed elastic body to hold the full roller bearing, and the outer ring of the full roller bearing is supported by the pressing portion of the insertion jig for the full roller bearing. The roller is pressed in the axial direction toward the insertion hole, and the full roller bearing is inserted into the bearing insertion hole.

According to the present invention, since the outer diameter of the holding portion is formed smaller than the inscribed circle diameter of the roller group of the full roller bearing, the insertion of the holding portion on the inner peripheral side of the roller group of the full roller bearing, and After the full roller bearing is inserted into the bearing insertion hole of the housing, the holding portion can be smoothly removed and the yield is improved.
Also, since the roller is pressed against the raceway surface of the outer ring by the elastic force of the elastic body provided on the outer peripheral portion of the insertion portion to hold the full roller bearing, when inserting the full roller bearing into the bearing insertion hole It is possible to prevent the skew at the time of occurrence.

Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view showing a full roller bearing insertion jig 1 according to the first embodiment. In the following description, parts having the same structure or the same function as those of the prior art described with reference to FIG.
As shown in FIG. 1, the full-roller bearing insertion jig 1 includes a plurality of substantially cylindrical cylindrical portions. A pressing portion 3 (second cylinder) for pressing the outer ring 11 of the shell-shaped full roller bearing 10 in the axial direction toward the bearing insertion hole is provided below the cylindrical portion 2 (first cylindrical portion) having the largest outer shape. Part) is formed. An insertion portion 4 (third cylindrical portion) that holds the inner peripheral side of the roller group (a plurality of rollers 12 arranged in an annular shape) of the shell-type full roller bearing 10 is formed below the pressing portion. Has been. Further, on the upper portion of the cylindrical portion 2, a grip portion 5 is formed which is gripped by, for example, a head portion 20 of a press machine that applies a load to the outer ring 11 of the shell-type full roller bearing 10.

  The full roller bearing insertion jig 1 is an inner peripheral side of the roller group of the shell type full roller bearing 10 in a state where the grip portion 5 of the full roller bearing insertion jig 1 is gripped by the head portion 20 of the press machine. The insertion part 4 is inserted into the. Then, a load applied by the press machine is applied to the end face of the outer ring 11 of the shell-type full roller bearing 10 through the pressing portion 3 and inserted into the bearing insertion hole 31 of the housing 30 of the automatic transmission, for example.

In the full roller bearing insertion jig 1, a slight gap is formed between the inner peripheral side of the roller group of the shell-type full roller bearing 10 and the insertion portion 4. In other words, the outer diameter of the insertion portion 4 is based on the inscribed circle diameter D of the roller group of the shell-type full roller bearing 10 (the inner diameter of the roller when the roller 12 is pressed against the inner circumferential raceway surface 11a of the outer ring 11). Is also formed small.
Further, in the insertion portion 4 of the bearing insertion jig 1 in the first embodiment, the shell-shaped full roller bearing 10 is inserted into the insertion portion 4 at a position facing the substantially central portion of the roller 12. For example, an elastic body 6 such as an O-ring is provided. The elastic body 6 has a substantially ring shape and is provided in a concave groove formed in the surface portion of the insertion portion 4.

  In addition, the cylinder part 2, the press part 3, and the holding part 5 are not restricted to a cylindrical shape. For example, the pressing portion 3 may have any shape as long as it can press the outer ring 11 of the shell-shaped full roller bearing 10 toward the bearing insertion hole. The grip portion 5 may be formed in a shape that the head portion 20 can easily grip. Further, the pressing portion 3 may be extended in the axial direction so as to be gripped by the head portion 20, and the cylindrical portion 2 and the gripping portion 5 may be shared by the pressing portion 3.

(How to insert a shell type full complement roller bearing)
2 and 3 are process diagrams showing a process of inserting the shell-type full roller bearing 10 into the bearing insertion hole 31 of the housing 30 of the automatic transmission.
First, as shown in FIG. 2A, the shell-shaped full roller bearing 10 is inserted into the insertion portion 4 of the bearing insertion jig 1. At this time, the rollers 12 are aligned by being pressed against the inner circumferential raceway surface 11 a of the outer ring 11 by the elastic force of the elastic body 6. Since a slight gap is formed between the inner peripheral side of the roller group of the shell-type full roller bearing 10 and the insertion portion 4, the insertion portion smoothly enters the inner peripheral side of the roller group of the shell-type full roller bearing 10. 4 can be inserted.

  Next, as shown in FIG. 2 (b), the pressing portion 3 presses the end surface of the outer ring 11 of the shell-type full roller bearing 10 by a load applied by a press machine, and the shell shape as shown in FIG. 3 (c). The full roller bearing 10 is inserted into the bearing insertion hole 31 of the housing 30 of the automatic transmission. At this time, as described above, the rollers 12 are pressed against and aligned with the inner raceway surface 11a of the outer ring 11 by the elastic force of the elastic body 6, so that a skew is generated in which the rollers 12 are inclined from the normal rotation axis. And it can prevent that the roller 12 becomes impossible to rotate.

  Finally, as shown in FIG. 3 (d), the insertion portion 4 is extracted from the shell-type full roller bearing 10. At this time, as described above, a slight gap is formed between the inner peripheral side of the roller group of the shell-type full roller bearing 10 and the insertion portion 4, and the elastic body 6 is elastically deformed. The insertion portion 4 can be extracted from the full roller bearing 10.

In the bearing insertion jig 1 configured as described above, the outer diameter of the insertion portion 4 is formed to be smaller than the inscribed circle diameter D of the roller group of the shell-type bearing 10. When the insertion portion 4 is inserted into the inner peripheral side of the roller group and the insertion portion 4 is smoothly removed after being inserted into the bearing insertion hole 31, the roller 12 and the outer ring 11 are removed when the insertion portion 4 is to be removed. The yield is improved without the inner circumferential raceway surface 11a being deformed and damaged.
Further, since the shell-type full roller bearing 10 is held by the elastic force of the elastic body 6 provided on the outer peripheral portion of the insertion portion 4, it occurs when the shell-type full roller bearing 10 is inserted into the bearing insertion hole 31. Skew can be prevented.

  In the first embodiment, the shell-type full roller bearing 10 which is an example of a full roller bearing has been described. However, the present invention can of course be implemented even with a solid type full roller bearing.

Embodiment 2. FIG.
In the first embodiment, the number of elastic bodies 6 provided in the insertion portion 4 of the full-roller bearing insertion jig 1 is one. However, the number of elastic bodies 6 is not limited to this, and a plurality of elastic bodies 6 are inserted into the insertion portion 4. It may be provided. Note that parts having the same structure or the same function as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 4 is a longitudinal sectional view showing the full roller bearing insertion jig 1 according to the second embodiment. In the insertion portion 4 of the bearing insertion jig 1 according to the second embodiment, the shell-shaped full roller bearing 10 is inserted into the insertion portion 4 in positions where the upper and lower portions of the roller 12 are held. For example, an elastic body 6 such as an O-ring is provided. The elastic body 6 has a substantially ring shape and is provided in a concave groove formed in the surface portion of the insertion portion 4.

  In the bearing insertion jig 1 configured in this manner, the upper and lower portions of the rollers 12 are pressed against and aligned with the inner raceway surface 11a of the outer ring 11 by the elastic force of the elastic body 6, The occurrence of skew can be effectively prevented.

It is a longitudinal cross-sectional view which shows the full roller bearing insertion jig 1 in this Embodiment 1. FIG. FIG. 5 is a process diagram showing a process of inserting a shell-type full roller bearing 10 into a bearing insertion hole 31 of a housing 30 of the automatic transmission according to the first embodiment. FIG. 3 is a process diagram illustrating a process of inserting a shell-shaped full roller bearing 10 into a bearing insertion hole 31 of a housing 30 of the automatic transmission subsequent to FIG. 2. It is a longitudinal cross-sectional view which shows the insertion roller 1 for full roller bearings in this Embodiment 2. FIG. It is a longitudinal cross-sectional view which shows the conventional insertion roller 1 for full roller bearings.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Insertion jig for full roller bearings, 2 cylinder part, 3 press part, 4 insertion part, 4a concave groove, 5 holding part, 6 elastic body, 10 shell type full roller bearing, 11 outer ring, 11a inner peripheral raceway surface, 12 Roller, 20 head part, 30 housing, 31 bearing insertion hole.

Claims (3)

A full roller bearing insertion jig for inserting a full roller bearing consisting of an outer ring and a group of rollers in which a plurality of rollers are arranged in an annular shape on the raceway surface of the outer ring, into a bearing insertion hole,
This full-roller bearing insertion jig is
A pressing portion that presses the outer ring in the axial direction toward the bearing insertion hole;
It consists of a cylindrical insertion portion inserted into the inner peripheral side of the annular roller group,
This insert is
The outer diameter is smaller than the inscribed circle diameter of the annular roller group,
An elastic body is provided on the outer periphery,
In a state where the insertion portion is inserted on the inner peripheral side of the annular roller group, the roller is pressed against the raceway surface of the outer ring by the elastic force of the elastic body to hold the full roller bearing. An insertion jig for full roller bearings.   2. The full-roller bearing insertion jig according to claim 1, wherein a plurality of the elastic bodies are provided on the outer peripheral portion of the insertion portion so as to be separated in the axial direction. An elastic body provided on an outer peripheral portion of the insertion portion by inserting the insertion portion of the full-roller bearing insertion jig according to claim 1 or 2 into an inner peripheral side of the annular roller group. The roller is pressed against the raceway surface of the outer ring by the elastic force of to hold the full roller bearing,
In the pressing portion of the full-roller bearing insertion jig, the outer ring of the full-roller bearing is pressed in the axial direction toward the bearing insertion hole,
A method of inserting a full roller bearing, wherein the full roller bearing is inserted into the bearing insertion hole.

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