JP2000320559A - Bearing ring for split type rolling bearing - Google Patents

Abstract

(57) [Problem] To solve the problem that even when one annular race is cut by machining such as a cutter, the race members are joined by a joining member that compensates for the cutting allowance, thereby reducing the processing time. And to reduce the production cost by reducing the complexity of work and materials. SOLUTION: A joining member 7 for joining a pair of slits 2 and 2 is provided with a supplementary portion 8 having a circumferential width for supplementing a cutting margin of the pair of slits 2 and 2 and a pair of engaging members. Stop holes 3, 3
And a pair of locking portions 3 and 3 which are locked to the head. As a result, the cutting allowance formed in the slit portions 2 and 2 is compensated by the supplement portion 8, and the pair of slit portions 2 and 2 are locked and connected by a simple method. Can be easily reassembled into one perfect circle raceway ring 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raceway for a split-type rolling bearing, for example, in which two raceway ring segments divided in a semicircular shape are combined again to form one annular raceway.
More specifically, the present invention relates to a raceway ring for a split-type rolling bearing in which machining time, complexity of work, and material are reduced by connecting raceway ring divided bodies by a coupling member that compensates for a cutting margin, thereby reducing manufacturing costs. .

[0002]

2. Description of the Related Art In general, a rolling bearing to be incorporated into a large industrial machine or the like has an extremely large bearing inner diameter and is difficult to transport and assemble as it is. We are trying to reassemble at the place.

In a first method of dividing a raceway of a split type rolling bearing, a notch is provided in advance at a location to be a split opening of one annular raceway, and the one raceway is provided. Is divided by a strong force at the notch portion to form two divided bodies. At the time of reassembly after splitting, the two split bodies are joined at their split openings to assemble one annular race. In this method, the slit portion is divided by a notch, and a cutting allowance by machining as described later cannot be performed. This method is widely used because it does not require subsequent processing.

In a second method of dividing a raceway ring, a split portion of one annular raceway ring is cut by machining such as a cutter to form two divided bodies. But,
A cutting allowance can be made at the opening of the cut divided body by this cutter or the like, and since the divided body is shortened in the circumferential direction, if the two divided bodies are joined as they are, an elliptical race ring is formed. And it cannot be a perfect circle.

[0005] Therefore, in the second method, the first measure is taken such that the two divided bodies are reworked after cutting to form a perfect circle, or two annular races are prepared in the first place. Then, the two races are shifted from the center line and cut by a cutter or the like, and the two divided bodies having no cutting allowance are combined to form a perfect circle race.
Measures are taken.

[0006]

However, in the first widely used dividing method, when dividing a raceway ring having a large wall thickness or a bearing ring having a large inner diameter, the division work is performed. In addition, large machining equipment is required, and when the annular race is split with a strong force at the notch, unlike cutting by machining,
In some cases, there is a chance that the material breaks in an unintended direction, and quality control is difficult.

Further, in the second dividing method, it is necessary to eliminate the length of the cutting margin that can be formed in the slit by cutting with a cutter or the like. In the case of the first countermeasure to make a perfect circle raceway, it is necessary to provide a machining allowance in advance to make a perfect circular shape, and rework is complicated and time-consuming. is there.

Also, two annular races are prepared, and the two races are respectively shifted from the center line and cut by a cutter or the like, and two divided bodies having no cutting allowance are combined to form a perfect circle race. In the case of the second countermeasure, of the two prepared races, one of the two races that can be cut can not be used, so that it has to be discarded, which leads to an increase in manufacturing cost. There is something to do.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and is intended to compensate for a cutting margin even when one annular race is cut by machining such as a cutter. By combining the bearing ring split bodies, the processing time, the complexity of work and the material are reduced,
An object of the present invention is to provide a raceway ring for a split-type rolling bearing that reduces manufacturing costs.

[0010]

In order to achieve the above object, a split type bearing ring for a rolling bearing according to the present invention has a plurality of rings formed by cutting one annular ring by machining at its slit. In a split type rolling bearing orbit, a plurality of split bodies are reassembled into one annular orbit by using a connecting member that divides into a plurality of orbital splits and connects a pair of split openings. Is characterized by comprising a supplemental portion having a circumferential width for supplementing the cutting allowance of the pair of slits, and a pair of locking portions for locking and coupling the pair of slits. .

As described above, according to the present invention, the connecting member for connecting the pair of slits is provided with a supplementary portion having a circumferential width for supplementing the cutting allowance of the pair of slits, and a pair of the pair of slits. And a pair of locking portions for locking and joining the split openings. With this, the cutting allowance that can be formed in the slit portion is compensated for by the supplementing portion of the joining member, and the pair of slit portions are locked and joined by a simple method, so that a plurality of divided bodies can be formed into one perfect circle. Can be easily reassembled.

Therefore, with respect to the first countermeasure of the second division processing method described in the prior art, rework is not required at the time of assembling, and the processing time and the complexity of the operation can be reduced. Since an allowance for making a perfect circle can be reduced, a special effect that material can be reduced can be achieved.

[0013] Further, with respect to the second countermeasure of the second division processing method described in the prior art, it is not necessary to divide two annular races in the first place, and there is no divided body to be discarded. This has a special effect that the cost can be significantly reduced.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a raceway for a split type rolling bearing according to an embodiment of the present invention.

FIG. 1 is a partial perspective view of a raceway before division, FIG. 2 is a partial perspective view of a raceway after division, and FIG. 3 is a state after division. FIG. 4 is a partial perspective view of the bearing ring, FIG. 4 is a perspective view of the bearing ring and the coupling member in a state after division, and FIG. 5 is a partial perspective view of the bearing ring in a state after coupling. 6 is a side view of the bearing ring in a state after the coupling, and FIG. 7 is a perspective view of the coupling member.

As shown in FIG. 1, one annular race 1
Before splitting, a pair of locking holes 3, 3 are formed in the vicinity of the location to be the split openings 2, 2, and the pair of locking holes 3, 3 in the circumferential direction are formed. The width is set to (L1).

As shown in FIG. 2, a split opening 2 of a race 1
Is cut by a cutter 4 or a mechanical process such as a wire cut (not shown), and divided into raceway ring divided bodies 5 and 6. The cutting margin of the slit 2 at this time is (t).

As shown in FIG. 3, a groove is machined so as to connect the slits 2, 2 with the locking holes 3, 3.

As shown in FIG. 4 or 7, a connecting member 7 for connecting the pair of slits 2 is prepared. The coupling member 7 includes a supplementary portion 8 having a circumferential width (t) for supplementing a cutting allowance (t) of the pair of slits 2, 2, and a columnar shape engaged with the pair of engagement holes 3, 3. And a pair of locking portions 9.

As shown in FIG. 5 or FIG. 6, this connecting member 7 is inserted between the pair of split openings 2 and 2 and into the pair of locking holes 3. As a result, since the cutting allowance made in the slit portions 2 and 2 is compensated for by the supplementing portion 8 of the coupling member 7, it is possible to reassemble the complete raceway ring 1.

As described above, in the present embodiment, the cutting allowance formed in the slits 2 and 2 is supplemented by the supplementing portion 8 of the coupling member 7, and the pair of locking holes 3 and 3 are engaged by a simple method. Since it is stopped, the pair of bearing ring segments 5 and 6 can be easily reassembled into one perfect circular bearing ring 1.

Therefore, there is no need for re-working during assembly, so that processing time, work complexity and materials can be reduced, and there is no divided body to be discarded, so that manufacturing costs can be significantly reduced.

Next, the respective dimensional relationships will be described.

The circumferential width (L2) of the pair of locking portions 9, 9 of the coupling member 7 is the circumferential width (L2) of the pair of locking holes 3, 3.
1), but after fastening, a pair of slits 3,
The locking holes 3 and 3 may be set slightly smaller than the circumferential width (L1) of the locking holes 3 and 3 so that the locking holes 3 are in close contact with each other.

The circumferential width (t) of the supplementary portion 7 of the connecting member 7
Is set to be the same as the circumferential width (t) of the cutting allowance.

The diameter of the pair of locking portions 9 is set to be slightly smaller than the diameter of the pair of locking holes 3. In the case where there is no lock, an interference (d) (see FIG. 7) may be provided so that the locking portions 9, 9 do not fall out of the locking holes 3, 3.

The present invention is not limited to the above-described embodiment, but can be variously modified.

[0028]

As described above, according to the present invention,
A coupling member for coupling the pair of slits, a supplemental portion having a circumferential width to compensate for a cutting margin of the pair of slits, and a pair of locking portions for locking the pair of slits. It consists of. With this, the cutting allowance that can be formed in the slit portion is compensated for by the supplementing portion of the joining member, and the pair of slit portions are locked and joined by a simple method, so that a plurality of divided bodies can be formed into one perfect circle. Can be easily reassembled.

Therefore, with respect to the first countermeasure of the second division processing method described in the prior art, rework is not required at the time of assembling, and the processing time and the complexity of the operation can be reduced. Since an allowance for making a perfect circle can be reduced, a special effect that material can be reduced can be achieved.

Further, with respect to the second countermeasure of the second division processing method described in the prior art, it is not necessary to divide the two annular races in the first place, and there is no divided body to be discarded. This has a special effect that the cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a raceway before splitting.

FIG. 2 is a partial perspective view of a raceway in a state of division.

FIG. 3 is a partial perspective view of a bearing ring in a state after division.

FIG. 4 is a perspective view of a bearing ring and a coupling member in a state after division.

FIG. 5 is a partial perspective view of the bearing ring in a state after coupling.

FIG. 6 is a side view of the bearing ring in a state after coupling.

FIG. 7 is a perspective view of a coupling member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track ring 2 Split opening part 3 Locking hole 4 Cutter 5, 6 Track ring split body 7 Coupling member 8 Replenishment part 9 Lock part

Claims (1)

[Claims] 1. An annular race is cut at its slit by machining to divide it into a plurality of race rings, and the plurality of races are joined using a connecting member for joining a pair of splits. In a split type rolling bearing race ring for reassembling a split body into one annular race ring, the coupling member includes a pair of supplementary portions having a circumferential width to compensate a cutting allowance of a pair of split openings, and a pair of supplementary portions. A raceway ring for a split-type rolling bearing, comprising a pair of locking portions for locking and joining a split opening portion.