JP3224646B2 - Split bearing assembly method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a split bearing in which a split bearing is assembled on the outer periphery of a crankshaft or other bearing assembly shaft.

[0002]

2. Description of the Related Art Conventionally, in the case of a support bearing or the like for supporting a crankshaft of an internal combustion machine on a crankcase, a split type bearing as shown in FIGS. I have. This split bearing 1
The outer ring 2 and the caged roller 3 are divided by dividing surfaces a and b along the width direction, respectively, so that the entire bearing 1 is divided into two bearing divided bodies 1A in the circumferential direction. , 1A. A pair of divided bodies 2A, 2A of the outer ring 2 is formed with an annular coupling groove 4 extending over both sides of the divided surface a.
And a snap ring 5 is fitted into the coupling groove 4 to be coupled to each other. As the snap ring 5, various types other than rubber rings, metal rings, chrysanthemum washers, and the like are used. The operation of assembling the two-bearing split bodies 1A, 1A on the outer periphery of the shaft is performed manually because of difficulty in mechanization.

[0003]

Originally, the bearing ring of the bearing is an integral body, and the rolling surface must not be damaged. However, in the case of a bearing used in a place where it cannot be assembled with the integral body, it is necessary to use a bearing. It is a two-part format where some parts are damaged. Therefore, when assembling, the centering is performed with great care, and if not assembled, abnormal noise will be generated at the divided portion. However, conventionally, as described above, assembling was performed manually, and the centering was also performed by a method in which the worker centered by touch, so that the workability was poor and the assembly time was long, and sometimes the centering was poor. In some cases, reassembly was required.

An object of the present invention is to facilitate centering,
An object of the present invention is to provide a method of assembling a split bearing in which an assembling time is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a method of assembling a split type bearing which is divided into two by a dividing surface along a width direction. The method includes a step of centering each other by the directional clamp and the width direction clamp, and a step of connecting the centered outer ring segments by a connecting member. The radial clamp uses a reference surface member and a radial pusher that radially sandwich the bearing outer ring at the split position, and the pusher is swingable around an axis along the width direction of the bearing, and It is assumed that both outer ring divided bodies are pressed by a pair of pressing surfaces. The width direction clamp is sandwiched between a width reference surface member that straddles and contacts the outer ring divided bodies at each division position and a swingable width direction pusher.

[0006]

According to this method, since the centering is carried out between the swingable radial pusher having a pair of pressing surfaces and the reference surface forming member in the radial direction, the pressing force of the pusher reduces the outer ring divided body. Acts equally and is centered reasonably and accurately. In addition, since the width direction pusher can swing freely,
Even if a misalignment in the width direction occurs between the two outer ring divided bodies, it can be corrected without difficulty and the centering can be accurately performed in the width direction. By simply clamping in this way, centering can be easily performed in the radial direction and the width direction, and the outer ring split bodies can be connected in the centered state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This method of assembling the split bearing is a method of manually assembling the split bearing 1 described with reference to FIGS. 5 and 6 to a bearing assembly shaft 6 such as a crankshaft. First, the configuration of the assembly jig 7 will be described. The assembly jig 7 includes a guide jig 8
, Upper surface holding member 9, radial clamp 10, width clamp 11, and snap ring insertion jig 12 (FIG. 4)
And a shaft support jig (not shown) for horizontally supporting the bearing assembly shaft 6 at a predetermined position with respect to the guide jig 8.

The guide jig 8 has a guide surface 8 in the form of a split cylindrical surface on which the outer ring 2 of the split type bearing 1 is mounted on the upper end surface in a fitted state.
a flanges 8b (FIG. 1) at both ends in the width direction of the guide surface 8a.
(C)). A pair of upright guide walls 13 and 14 extend on both sides of the guide jig 8, and a notch 15 for clamping and a notch 16 for inserting a ring are formed at the upper ends thereof. In addition, flanges 13a, 13b, 14a, 14a,
14b (FIG. 2) is provided. The upper surface holding member 9
It is supported at the base end so as to be rotatable up and down around a horizontal support shaft, and is rotatably driven by a driving source such as a clamp cylinder (not shown).

The radial clamp 10 includes the reference surface forming member 1.
7 and a radial pusher 18. Reference surface forming member 1
Numeral 7 is formed integrally with a part of the upright guide wall 14 of the guide jig 8, and has a bifurcated shape due to the formation of the ring insertion notch 16 as shown in FIG. The reference surface forming member 17 is a member for striking the flat reference surface 17a across the pair of outer ring divided bodies 2A, 2A, and the divided surface a of the outer ring divided body 2A placed horizontally on the guide surface 8a. Is formed at the center height of the reference surface 17a.

The radial pusher 18 is attached to the tip of a clamp shaft 19 so as to be able to swing up and down by a horizontal support shaft 20, and is always urged to a neutral angle by a return spring (not shown). The radial pusher 18 has a pair of pressing surfaces 18a,
18a are formed in a V-shape so as to be in contact with the outer diameter surfaces of both outer ring split bodies 2A, 2A, respectively. The pressing surfaces 18a, 18a may be provided locally only on the outer ring contact point on the front surface of the radial pusher 18.

A pair of widthwise clamps 11 are provided for each of the divided positions, and each of the outer ring divided bodies 2A, 2A
Reference surface members 13b and 14b of flat surfaces that straddle and contact
And a swingable width direction pusher 21. The width reference surface members 13b and 14b are provided on the upright guide wall 1 of the guide jig 8.
Each of the flanges 3 and 14 is provided with one of the flanges, and protrudes wider toward the inner diameter than the other flanges 13a and 14a. The width direction pusher 21 is attached to the tip of the clamp shaft 22 so as to be vertically swingable by a support shaft 23, and is constantly urged to a neutral angle by a return spring (not shown). The width direction pusher 21 has a side surface formed in a plate shape, and a flat front end surface serves as a pressing surface. Each of the clamp shafts 19, 22
It is driven forward and backward by a drive source such as a clamp cylinder. In addition,
Instead of using a driving source, these clamp shafts 19, 22 and the upper surface pressing member 9 are manually advanced or retracted or rotated like a general hand clamp device or the like, and the pressing force is reduced by a reverse return preventing mechanism (not shown). It is good also as what can be held in the state where it occurred.

Next, an assembling procedure will be described. First, a process of setting the bearing divided bodies 1A, 1A to the guide jig 8 will be described with reference to FIGS. As shown in FIGS. 2A and 2A, the bearing assembly shaft 6 is disposed above the guide jig 8. Thereafter, the outer ring divided body 2A of the one bearing divided body 1A is held in hand and inserted into the lower side of the shaft 6 (FIGS. 2B and 2B ').
Next, while holding the divided body 3A of one roller 3 with a cage in a hand and guiding it with the outer ring divided body 2A inserted earlier, it is inserted between the shaft 6 and the outer ring divided body 2A (FIG. 2C). ,
(C ')). The other outer ring divided body 2A and the divided body 3A of the caged roller 3 are set on the shaft 6 (FIG. 3).

After the split bearing bodies 1A, 1A are arranged on the guide jig 8 as described above, clamping for centering is performed as shown in FIG. Clamping is performed in the order of the width direction clamp 11 and the radial direction clamp 10, and thereafter, pressing by the upper surface pressing member 9 is performed. That is, first, as shown in FIG. 1 (C), the reference surface members 13b, 1 of a flat surface straddle both outer ring divided bodies 2A, 2A by a swingable widthwise pusher 21.
4b. Pressing by the width direction pusher 21
This is performed for each of the two divided portions of the bearing 1. Thereby, both outer ring divided bodies 2A, 2A are centered in the width direction.

Next, as shown in FIG. 1A, the two outer ring split bodies 2A, 2A are pressed against the flat reference surface member 17 of the guide jig 8 by a V-shaped radial pusher 18. As a result, the two outer ring split bodies 2A, 2A are radially centered with each other.
In this state, the outer ring divided body 2 is pressed by the upper surface pressing member 9 and pressed.
A and 2A are held so as not to float. Next, as shown in FIG. 4, the snap ring 5 as a connecting member is fitted into the connecting grooves 4 on both sides of the outer ring 2 by the snap ring inserting jig 12 to connect the two outer ring divided bodies 2A, 2A to each other.
At this time, the snap ring 5 is fitted with the radial pusher 18 retracted. Width direction pusher 2
1 may be in a pressed state or may be retracted, but the snap ring 5 is fitted while the pressing by the upper surface pressing member 9 is performed.

According to this assembling method, in the radial direction, the pair of outer ring divided bodies 2A, 2A are connected to the reference surface forming member 17 by a pair of pressing surfaces 18a, 18a of the swingable radial pusher 18 which are opened in a V shape. Since the pressing is performed, the pressing force of the pusher 18 acts evenly on the two outer ring divided bodies 2A, 2A, and the centering is performed easily and accurately in the radial direction. Further, since the width direction pusher 21 is also swingable, both outer ring divided bodies 2A,
Even if 2A is misaligned in the width direction, correct it without difficulty,
Centering can be performed accurately in the width direction. Thus, the outer ring split bodies 2A, 2A can be accurately centered only by pressing with the radial pushers 18 and the width pushers 21. Therefore, centering is easy,
Assembly time is reduced.

[0016]

According to the method of assembling the split bearing according to the present invention, the divided bearings are positioned after being positioned by the radial clamp and the width clamp, and then joined together, and the radial clamp has a pair of swinging surfaces having a pair of pressing surfaces. Since a flexible pusher is used and a swingable pusher is also used in the width direction clamp, the positioning in the radial direction and the width direction can be easily and accurately performed. Therefore, the centering can be easily and reliably performed, and the assembling time is reduced.

[Brief description of the drawings]

1A is a cutaway front view showing a radially clamped state of an assembling method according to an embodiment of the present invention, FIG. 1B is a left side view thereof, and FIG. 1C is a widthwise clamped state thereof. It is a right side view.

FIG. 2 is an explanatory diagram of a setting process of a bearing divided body in the assembling method.

FIG. 3 is an explanatory view of a state where the setting of the bearing divided body is completed.

FIG. 4 is an explanatory diagram of a snap ring insertion process in the assembling method.

FIG. 5 is a front view and a partial cross-sectional view of a split bearing assembled by the same assembling method.

FIG. 6 is a perspective view and a partial side view of an outer ring of the bearing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Split type bearing, 1A ... Bearing split body, 2 ... Outer ring, 2A ...
Outer ring split body, 5: snap ring (joining member), 6: bearing assembly shaft, 8: guide jig, 9: upper surface pressing member, 10 ...
Radial direction clamp, 11: width direction clamp, 13b: width reference surface member, 17: radial direction reference surface member, 18: radial direction pusher, 18a: pressing surface, 21: width direction pusher

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-22673 (JP, A) JP-A-57-61433 (JP, A) JP-A-6-81846 (JP, A) JP-A-7-118 24669 (JP, A) JP-A-56-23112 (JP, A) JP-A-62-185629 (JP, A) JP-A-3-19123 (JP, U) JP-A-39-10403 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B23P 21/00 306 F16C 9/02 F16C 43/02

Claims (1)

(57) [Claims] 1. A method for assembling a split type bearing which is divided into two by a dividing surface along a width direction, wherein a pair of outer ring divided bodies arranged on an outer periphery of a bearing assembly shaft are mutually separated by a radial clamp and a lateral clamp. And a step of connecting the centered outer ring split bodies with a connecting member.The radial clamp includes a reference surface member that radially sandwiches the bearing outer rings at the split position. Using a radial pusher, this pusher is swingable about the axis along the width direction of the bearing, and each of the two outer ring divided body is pressed by a pair of pressing surfaces, the width direction clamp, A method of assembling a split type bearing, wherein the split type bearing is sandwiched between a width reference surface member which straddles both outer ring split bodies at each split position and is in contact with each other and a swingable width direction pusher.