JP2024007912A - Rolling bearing unit production method and rolling bearing unit - Google Patents

Rolling bearing unit production method and rolling bearing unit Download PDF

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JP2024007912A
JP2024007912A JP2022109317A JP2022109317A JP2024007912A JP 2024007912 A JP2024007912 A JP 2024007912A JP 2022109317 A JP2022109317 A JP 2022109317A JP 2022109317 A JP2022109317 A JP 2022109317A JP 2024007912 A JP2024007912 A JP 2024007912A
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rolling bearing
housing
bearing unit
mold
manufacturing
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宗隆 三ツ邑
Munetaka Mitsumura
翔 橋本
Sho Hashimoto
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NSK Ltd
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NSK Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a rolling bearing unit production method in which, upon integrating a rolling bearing with a metallic or resinous housing, cost reduction is attained by facilitating the production process without requiring an assembly operation, a rolling bearing push-in operation and complicated processing.
SOLUTION: Provided is a production method for a rolling bearing unit in which a rolling bearing is integrated with a metallic or resinous housing, where the rolling bearing is attached to a housing mold as a core, and molten metal or a molten resin is made to flow into the mold so as to be solidified.
SELECTED DRAWING: Figure 1
COPYRIGHT: (C)2024,JPO&INPIT

Description

本発明は、転がり軸受と、金属製又は樹脂製のハウジングとが一体化した転がり軸受ユニットの製造方法、並びに転がり軸受ユニットに関する。 The present invention relates to a method for manufacturing a rolling bearing unit in which a rolling bearing and a housing made of metal or resin are integrated, and to a rolling bearing unit.

従来より、ピローブロックやプランマブロックなどのように、例えば、特許文献１や２に示すような、転がり軸受と、金属製のハウジングとが一体化した転がり軸受ユニットが広く使用されている。また、転がり軸受と、樹脂製のハウジングとが一体化した転がり軸受ユニットも広く知られている。 Conventionally, rolling bearing units such as pillow blocks and plummer blocks, such as those shown in Patent Documents 1 and 2, in which a rolling bearing and a metal housing are integrated have been widely used. Further, rolling bearing units in which a rolling bearing and a resin housing are integrated are also widely known.

図６は、転がり軸受ユニット１の一例として従来のプランマブロックを模式的に示す断面図である。ハウジング１００は、上ハウジング１００Ａと下ハウジング１００Ｂとの２分割構造であり、上ハウジング１００Ａ及び下ハウジング１００Ｂには、それぞれ半円筒状の軸受収容部１０１Ａ，１０１Ｂが形成されている。そして、下ハウジング１００Ｂの軸受収容部１０１Ｂに転がり軸受１０の下半分が収容され、また、上ハウジング１００Ａの軸受収容部１０１Ａに転がり軸受１０の上半分が収容されるように、上ハウジング１００Ａを被せ、上ハウジング１００Ａと下ハウジング１００Ｂとをボルト締めする。
これにより、上ハウジング１００Ａと下ハウジング１００Ｂとが連結されるとともに、軸受収容部１０１Ａ，１０１Ｂで形成される円筒状の軸受収容部１０１に転がり軸受１０が収容され、転がり軸受１０とハウジング１００とが一体化する。 FIG. 6 is a cross-sectional view schematically showing a conventional plummer block as an example of the rolling bearing unit 1. As shown in FIG. The housing 100 has a two-part structure including an upper housing 100A and a lower housing 100B, and semicylindrical bearing accommodating portions 101A and 101B are formed in the upper housing 100A and the lower housing 100B, respectively. Then, cover the upper housing 100A so that the lower half of the rolling bearing 10 is accommodated in the bearing accommodating portion 101B of the lower housing 100B, and the upper half of the rolling bearing 10 is accommodated in the bearing accommodating portion 101A of the upper housing 100A. , the upper housing 100A and the lower housing 100B are bolted together.
As a result, the upper housing 100A and the lower housing 100B are connected, and the rolling bearing 10 is accommodated in the cylindrical bearing accommodating portion 101 formed by the bearing accommodating portions 101A and 101B, so that the rolling bearing 10 and the housing 100 are Unify.

しかしながら、上ハウジング１００Ａの軸受収容部１０１Ａ及び下ハウジング１００Ｂの軸受収容部１０１Ｂの各内周面は、転がり軸受１０の外輪外周面との接触面となるため、加工精度を十分に高める必要があり、加工に手間がかかる。また、上ハウジング１００Ａの合わせ面１０２Ａや、下ハウジング１００Ｂの合わせ面１０２Ｂの加工も必要になる。更には、転がり軸受１０を下ハウジング１００Ｂの軸受収容部１０１Ｂに収容し、上ハウジング１００Ａを被せてボルト締めを行う工程も必要になる。このように、組立作業が必要で、加工も複雑になるため、コスト高は避けられない。 However, since the inner circumferential surfaces of the bearing accommodating portion 101A of the upper housing 100A and the bearing accommodating portion 101B of the lower housing 100B become contact surfaces with the outer circumferential surface of the outer ring of the rolling bearing 10, it is necessary to sufficiently improve the machining accuracy. , processing is time-consuming. Further, it is also necessary to process the mating surface 102A of the upper housing 100A and the mating surface 102B of the lower housing 100B. Furthermore, it is also necessary to accommodate the rolling bearing 10 in the bearing accommodating portion 101B of the lower housing 100B, cover it with the upper housing 100A, and tighten the bolts. As described above, assembly work is required and processing is complicated, so high costs are unavoidable.

なお、図示は省略するが、ピローブロックでは、ハウジングが２分割ではないものの、転がり軸受の押し込み工程や、軸受収容部の内周面の加工を要する。 Although not shown in the drawings, in the case of a pillow block, although the housing is not divided into two parts, a process of pushing in the rolling bearing and machining of the inner circumferential surface of the bearing accommodating part are required.

加えて、転がり軸受に過度なトルクや荷重がかかることにより、転がり軸受の外輪とハウジングの内周面とが摺動してしまうという現象や、転がり軸受の軌道輪が、運転中に軸又はハウジングに対して移動するクリープ現象が生じるおそれもある。 In addition, excessive torque or load applied to a rolling bearing may cause the outer ring of the rolling bearing to slide against the inner circumferential surface of the housing, or the bearing ring of a rolling bearing may slide against the shaft or housing during operation. There is also a possibility that a creep phenomenon in which the material moves against the surface of the material may occur.

特開２０１９－５２７１９号公報JP 2019-52719 Publication 特開２０１６－１２８７０１号公報Japanese Patent Application Publication No. 2016-128701

本発明は、かかる問題点に鑑みてなされたものであり、転がり軸受と、金属製又は樹脂製のハウジングとの一体化に際して、組立作業や転がり軸受の押し込み作業、複雑な加工を必要とせず、製造工程を容易にして低コスト化を図ることを目的とする。 The present invention has been made in view of these problems, and when integrating a rolling bearing with a metal or resin housing, there is no need for assembly work, pushing the rolling bearing, or complicated machining. The purpose is to simplify the manufacturing process and reduce costs.

本発明の上記目的は、転がり軸受ユニットの製造方法に係る下記［１］の構成により達成される。 The above object of the present invention is achieved by the following configuration [1] related to the manufacturing method of a rolling bearing unit.

［１］ 転がり軸受と、金属製又は樹脂製のハウジングとが一体化した転がり軸受ユニットの製造方法において、
前記転がり軸受をコアとして前記ハウジング用の金型に装着し、前記金型に金属溶湯又は溶融樹脂を流し込み、凝固させる、転がり軸受ユニットの製造方法。 [1] In a method for manufacturing a rolling bearing unit in which a rolling bearing and a metal or resin housing are integrated,
A method for manufacturing a rolling bearing unit, comprising: mounting the rolling bearing as a core in a mold for the housing, and pouring molten metal or molten resin into the mold and solidifying it.

また、転がり軸受ユニットの製造方法に係る本発明の好ましい実施形態は、以下の［２］～［５］に関する。 Further, preferred embodiments of the present invention relating to a method for manufacturing a rolling bearing unit relate to [2] to [5] below.

［２］ 前記転がり軸受の外輪及び内輪の少なくとも一方を冷却しながら、前記金型に前記金属溶湯又は溶融樹脂を流し込み、凝固させる、［１］に記載の転がり軸受ユニットの製造方法。
［３］ 前記転がり軸受の内輪と外輪との間の空間に潤滑油を供給しながら、前記金型に前記金属溶湯又は溶融樹脂を流し込み、凝固させる、［１］又は［２］に記載の転がり軸受ユニットの製造方法。
［４］ 前記転がり軸受にグリースを充填した状態で、前記金型に前記金属溶湯又は溶融樹脂を流し込み、凝固させる、［１］又は［２］に記載の転がり軸受ユニットの製造方法。
［５］ 前記金属溶湯が、アルミニウム合金又はマグネシウム合金の溶湯である、［１］～［４］のいずれか１つに記載の転がり軸受ユニットの製造方法。 [2] The method for manufacturing a rolling bearing unit according to [1], wherein the molten metal or molten resin is poured into the mold and solidified while cooling at least one of an outer ring and an inner ring of the rolling bearing.
[3] The rolling bearing according to [1] or [2], wherein the molten metal or molten resin is poured into the mold and solidified while supplying lubricating oil to the space between the inner ring and the outer ring of the rolling bearing. Manufacturing method of bearing unit.
[4] The method for manufacturing a rolling bearing unit according to [1] or [2], wherein the molten metal or molten resin is poured into the mold and solidified while the rolling bearing is filled with grease.
[5] The method for manufacturing a rolling bearing unit according to any one of [1] to [4], wherein the molten metal is a molten aluminum alloy or a magnesium alloy.

また、本発明の上記目的は、転がり軸受ユニットに係る下記［６］及び［７］の構成により達成される。 Further, the above object of the present invention is achieved by the following configurations [6] and [7] related to the rolling bearing unit.

［６］ 転がり軸受と、金属製のハウジングとが一体化した転がり軸受ユニットにおいて、
前記転がり軸受をコアとする前記ハウジングとの鋳造品である、転がり軸受ユニット。
［７］ 転がり軸受と、樹脂製のハウジングとが一体化した転がり軸受ユニットにおいて、
前記転がり軸受をコアとする前記ハウジングとの射出成形品である、転がり軸受ユニット。 [6] In a rolling bearing unit in which a rolling bearing and a metal housing are integrated,
A rolling bearing unit that is a cast product with the housing and having the rolling bearing as a core.
[7] In a rolling bearing unit in which a rolling bearing and a resin housing are integrated,
A rolling bearing unit that is an injection molded product with the housing having the rolling bearing as a core.

本発明によれば、転がり軸受と、金属製又は樹脂製のハウジングとの一体化に際して、組立作業や転がり軸受の押し込み作業、ハウジングの複雑な加工を必要とせず、製造工程が容易になり、低コスト化を図ることができる。 According to the present invention, when integrating a rolling bearing with a metal or resin housing, there is no need for assembly work, pushing the rolling bearing, or complicated machining of the housing, simplifying the manufacturing process and reducing costs. Cost reduction can be achieved.

図１は、本発明に係る転がり軸受ユニットの製造方法の実施の形態１を示す模式図である。FIG. 1 is a schematic diagram showing Embodiment 1 of a method for manufacturing a rolling bearing unit according to the present invention. 図２は、本発明に係る転がり軸受ユニットの一例を示す模式図である。FIG. 2 is a schematic diagram showing an example of a rolling bearing unit according to the present invention. 図３は、本発明に係る転がり軸受ユニットの製造方法の実施の形態２を示す模式図である。FIG. 3 is a schematic diagram showing Embodiment 2 of the method for manufacturing a rolling bearing unit according to the present invention. 図４は、本発明に係る転がり軸受ユニットの製造方法の実施の形態３を示す模式図である。FIG. 4 is a schematic diagram showing Embodiment 3 of the method for manufacturing a rolling bearing unit according to the present invention. 図５は、本発明に係る転がり軸受ユニットの製造方法の実施の形態４を示す模式図である。FIG. 5 is a schematic diagram showing Embodiment 4 of the method for manufacturing a rolling bearing unit according to the present invention. 図６は、従来のプランマブロックの一例を模式的に示す断面図である。FIG. 6 is a cross-sectional view schematically showing an example of a conventional plummer block.

本発明者らは、上記課題を解決するため鋭意検討を重ねた結果、転がり軸受をコアとし、金属製のハウジングを鋳造して一体化、又は樹脂製のハウジングを射出成形して一体化することが有効であることを見出した。 As a result of extensive studies to solve the above problems, the inventors of the present invention have found that a rolling bearing is used as a core, and a metal housing is cast and integrated, or a resin housing is injection molded and integrated. was found to be effective.

以下、実施の形態を例示して本発明を詳細に説明するが、本発明はこれに限定されるものではない。また、実施の形態には種々の変更又は改良を加えることが可能であり、その様な変更又は改良を加えた形態も本発明に含まれ得る。 Hereinafter, the present invention will be described in detail by illustrating embodiments, but the present invention is not limited thereto. Further, various changes or improvements can be made to the embodiments, and forms with such changes or improvements can also be included in the present invention.

［実施の形態１］
本発明の転がり軸受ユニットは、転がり軸受と、金属製又は樹脂製のハウジングとを鋳造により一体化したものである。 [Embodiment 1]
The rolling bearing unit of the present invention is one in which a rolling bearing and a housing made of metal or resin are integrated by casting.

図１は、本発明に係る転がり軸受ユニットの製造方法の実施の形態１を示す模式図である。製造に際して、まず、図１に示すように、転がり軸受１０をコアとしてハウジング用の下金型５０Ｂに装着し、上金型５０Ａで覆い、型締めした後、上金型５０Ａの適所に形成した注湯口（図示せず）から金属溶湯又は溶融樹脂（図示せず）を流し込み、転がり軸受１０と上金型５０Ａと下金型５０Ｂとの空所５５に金属溶湯又は溶融樹脂を充填する。また、上金型５０Ａ及び下金型５０Ｂには、それぞれ転がり軸受１０の外径及び内径に相当するリング状の溝５１Ａ，５１Ｂが設けられており、転がり軸受１０を位置規制している。なお。空所５５としては、図６に示したようなハウジング１００の形状など、任意に選択できる。 FIG. 1 is a schematic diagram showing Embodiment 1 of a method for manufacturing a rolling bearing unit according to the present invention. In manufacturing, first, as shown in FIG. 1, the rolling bearing 10 as a core was mounted on the lower mold 50B for the housing, covered with the upper mold 50A, and after clamping the mold, it was formed in the appropriate position of the upper mold 50A. Molten metal or molten resin (not shown) is poured from a pouring port (not shown) to fill the void 55 between the rolling bearing 10, the upper mold 50A, and the lower mold 50B with the molten metal or molten resin. Further, the upper mold 50A and the lower mold 50B are provided with ring-shaped grooves 51A and 51B corresponding to the outer diameter and inner diameter of the rolling bearing 10, respectively, to regulate the position of the rolling bearing 10. In addition. The space 55 can be arbitrarily selected from the shape of the housing 100 as shown in FIG. 6.

転がり軸受１０には制限はなく、玉軸受やころ軸受、自動調心軸受など任意に選択可能である。また、外輪外周面の加工時に粗い加工をすることや、ショットピーニングや摺動方向と垂直の溝切をすることにより、ハウジング１００との密着性が高まり、クリープ現象をより抑えることが可能になる。 The rolling bearing 10 is not limited and can be arbitrarily selected from ball bearings, roller bearings, self-aligning bearings, etc. In addition, rough machining, shot peening, and cutting grooves perpendicular to the sliding direction when machining the outer circumferential surface of the outer ring improve the adhesion with the housing 100, making it possible to further suppress the creep phenomenon. .

溶湯となる金属の種類にも制限はなく、ハウジングとしての強度を考慮して任意に選択可能であるが、転がり軸受１０の外輪と接するため、熱的影響を考慮すると、低融点の金属が好ましく、例えば、アルミニウム合金やマグネシウム合金が好適である。また、線膨張係数は、鉄が１１．８～１２．１［×１０－６／Ｋ］であるのに比べて、マグネシウムは２５．４～２６［×１０－６／Ｋ］、アルミニウムは２３～２３．５［×１０－６／Ｋ］と大きいことから、金属溶湯が凝固する際に収縮する方向にあるため、転がり軸受１０とハウジング１００との間がマイナスすき間となり、ハウジング／軸受間が摺動しにくくなると考えられることから、アルミニウム合金やマグネシウム合金が好適であるといえる。
また、樹脂の膨張係数は、一般的に１１～２０［×１０－５／Ｋ］であって、上記マグネシウムやアルミニウムと同様、比較的大きいことから、転がり軸受と、樹脂製のハウジングとが一体化した、射出成形により形成される転がり軸受ユニットの場合においても、ハウジング／軸受間が摺動しにくくなると考えられる。 There are no restrictions on the type of metal used as the molten metal, and it can be selected arbitrarily taking into account the strength of the housing, but considering the thermal effects since it comes into contact with the outer ring of the rolling bearing 10, a metal with a low melting point is preferable. For example, aluminum alloy or magnesium alloy is suitable. Furthermore, the coefficient of linear expansion is 11.8 to 12.1 [×10 -6 /K] for iron, 25.4 to 26 [×10 -6 /K] for magnesium, and 23 for aluminum. Since it is as large as ~23.5 [×10 -6 /K], it tends to contract when the molten metal solidifies, so there is a negative clearance between the rolling bearing 10 and the housing 100, and the gap between the housing and the bearing is Since it is thought that it will be difficult to slide, aluminum alloy and magnesium alloy can be said to be suitable.
In addition, the expansion coefficient of resin is generally 11 to 20 [×10 -5 /K], which is relatively large like the above-mentioned magnesium and aluminum, so the rolling bearing and the resin housing are integrated. Even in the case of a rolling bearing unit formed by injection molding, it is thought that sliding between the housing and the bearing becomes difficult.

そして、全体を自然冷却し、空所５５に充填した金属溶湯又は溶融樹脂を凝固させた後、型を開くことにより、図２に示すような本実施形態に係る転がり軸受ユニット１が得られる。この転がり軸受ユニット１は、図６に示した従来のプランマブロックのようにハウジング１００が２分割ではなく、ハウジング１００と転がり軸受１０とが一体化した鋳造品又は射出成形品である。そのため、上ハウジング１００Ａと下ハウジング１００Ｂとの合わせ面１０２Ａ，１０２Ｂがなく、軸受収容部１０１の内周面の加工も不要である。更には、軸受収容部１０１に転がり軸受１０を押し込む工程も不要である。 After the whole is naturally cooled and the molten metal or molten resin filled in the cavity 55 is solidified, the mold is opened to obtain the rolling bearing unit 1 according to the present embodiment as shown in FIG. 2. This rolling bearing unit 1 is a cast or injection molded product in which the housing 100 and the rolling bearing 10 are integrated, instead of having a housing 100 divided into two parts as in the conventional plummer block shown in FIG. Therefore, there are no mating surfaces 102A, 102B between the upper housing 100A and the lower housing 100B, and there is no need to process the inner peripheral surface of the bearing accommodating portion 101. Furthermore, the step of pushing the rolling bearing 10 into the bearing accommodating portion 101 is also unnecessary.

［実施の形態２］
図３は、本発明に係る転がり軸受ユニットの製造方法の実施の形態２を示す模式図である。金属溶湯又は溶融樹脂による転がり軸受１０への熱的影響を軽減するために、図３に示すように、転がり軸受１０の内輪に挿通される軸（図示せず）に相当する冷却水流通管６０を用いることもできる。この冷却水流通管６０に冷却水を流通させながら、空所５５に金属溶湯又は溶融樹脂を流し込むことにより、転がり軸受１０の内輪から転動体、外輪へと順次冷却され、軸受全体が冷却される。 [Embodiment 2]
FIG. 3 is a schematic diagram showing Embodiment 2 of the method for manufacturing a rolling bearing unit according to the present invention. In order to reduce the thermal influence of molten metal or molten resin on the rolling bearing 10, as shown in FIG. You can also use By pouring molten metal or molten resin into the space 55 while circulating cooling water through the cooling water distribution pipe 60, the inner ring of the rolling bearing 10, the rolling elements, and the outer ring are sequentially cooled, and the entire bearing is cooled. .

［実施の形態３］
図４は、本発明に係る転がり軸受ユニットの製造方法の実施の形態３を示す模式図である。金属溶湯又は溶融樹脂による転がり軸受１０への熱的影響を軽減するために、図４に示すように、上金型５０Ａ及び下金型５０Ｂのそれぞれに、転がり軸受１０の内径及び外径に合わせて冷却水流通路７０を設け、冷却水を流通させながら空所５５に金属溶湯又は溶融樹脂を流し込むこともできる。冷却水流通路７０により、転がり軸受１０を側面から冷却することができる。
なお、冷却水流通路７０は、上金型５０Ａ内で流通し、転がり軸受１０の内輪及び外輪の上部を冷却させる、といった形でもよい。更には、下金型５０Ｂ内で流通し、転がり軸受１０の内輪及び外輪の下部を冷却させる、といった形でもよい。 [Embodiment 3]
FIG. 4 is a schematic diagram showing Embodiment 3 of the method for manufacturing a rolling bearing unit according to the present invention. In order to reduce the thermal influence of molten metal or molten resin on the rolling bearing 10, as shown in FIG. It is also possible to provide a cooling water flow path 70 and pour the molten metal or molten resin into the space 55 while circulating the cooling water. The cooling water passage 70 allows the rolling bearing 10 to be cooled from the side.
Note that the cooling water flow path 70 may be configured to flow within the upper mold 50A and cool the upper portions of the inner ring and outer ring of the rolling bearing 10. Furthermore, it may be configured such that it flows within the lower mold 50B and cools the lower portions of the inner ring and outer ring of the rolling bearing 10.

また、図示は省略するが、実施の形態２で説明した冷却水流通管６０を併用することもできる。これにより、転がり軸受１０の冷却効果が高まり、熱的影響をより軽減することができる。
また，図４では、上金型及び下金型といったパーティングラインが横向きになるような形で設置しているが、本金型を横向き、すなわちパーティングラインが縦向きになるような形にしても構わない。 Although not shown, the cooling water flow pipe 60 described in the second embodiment can also be used in combination. Thereby, the cooling effect of the rolling bearing 10 is enhanced, and thermal effects can be further reduced.
In addition, in Figure 4, the upper mold and lower mold are installed in such a way that the parting line is oriented horizontally, but the main mold is installed horizontally, that is, with the parting line oriented vertically. I don't mind.

［実施の形態４］
図５は、本発明に係る転がり軸受ユニットの製造方法の実施の形態４を示す模式図である。金属溶湯又は溶融樹脂による転がり軸受１０への熱的影響を軽減するために、図５に示すように、下金型５０Ｂの空所５５を貫通し、更には転がり軸受１０の外輪１１を貫通する潤滑油流通管８０を設け、潤滑油流通管８０を通じて転がり軸受１０の外輪１１と内輪１２との間の空間（軸受空間）に潤滑油を供給しながら、空所５５に金属溶湯又は溶融樹脂を流し込むこともできる。潤滑油が冷媒となり、転がり軸受１０を軸受空間、すなわち内部から冷却することできる。 [Embodiment 4]
FIG. 5 is a schematic diagram showing Embodiment 4 of the method for manufacturing a rolling bearing unit according to the present invention. In order to reduce the thermal influence of the molten metal or molten resin on the rolling bearing 10, as shown in FIG. A lubricating oil distribution pipe 80 is provided, and while lubricating oil is supplied to the space (bearing space) between the outer ring 11 and the inner ring 12 of the rolling bearing 10 through the lubricating oil distribution pipe 80, molten metal or molten resin is poured into the cavity 55. It can also be poured. The lubricating oil serves as a refrigerant, and the rolling bearing 10 can be cooled from the bearing space, that is, from the inside.

なお、潤滑油流通管８０は、得られる転がり軸受ユニット１において、そのまま転がり軸受１０の給油孔として利用することができる。そのため、製造後に給油孔から新たな潤滑剤を供給し、製造中に冷却媒として使用した潤滑油を転がり軸受１０から流し出すことができる。 Note that the lubricating oil flow pipe 80 can be used as it is as an oil supply hole of the rolling bearing 10 in the resulting rolling bearing unit 1. Therefore, new lubricant can be supplied from the oil supply hole after manufacture, and the lubricant used as a coolant during manufacture can be flushed out of the rolling bearing 10.

また、実施の形態２や実施の形態３で説明した、冷却水流通管６０や冷却水流通路７０を併用してもよい。 Further, the cooling water flow pipe 60 and the cooling water flow passage 70 described in the second embodiment and the third embodiment may be used together.

［実施の形態５］
図示は省略するが、実施の形態１～３において、転がり軸受１０として、軸受空間にグリースを充填した状態で使用することもできる。グリースが冷却材となって、転がり軸受１０の冷却に寄与する。 [Embodiment 5]
Although not shown, in the first to third embodiments, the rolling bearing 10 may be used with the bearing space filled with grease. The grease acts as a coolant and contributes to cooling the rolling bearing 10.

金属溶湯又は溶融樹脂が凝固するまでは短時間であり、一般的な軸受用グリースであれば、熱分解などを起こさずに十分に耐え得る。 It takes only a short time for the molten metal or molten resin to solidify, and general grease for bearings can withstand it sufficiently without causing thermal decomposition.

１ 転がり軸受ユニット
１０ 転がり軸受
１１ 外輪
１２ 内輪
５０Ａ 上金型
５０Ｂ 下金型
５１Ａ 溝
５１Ｂ 溝
５５ 空所
６０ 冷却水流通管
７０ 冷却水流通路
８０ 潤滑油流通管
１００ ハウジング
１０１ 軸受収容部 1 Rolling bearing unit 10 Rolling bearing 11 Outer ring 12 Inner ring 50A Upper mold 50B Lower mold 51A Groove 51B Groove 55 Space 60 Cooling water flow pipe 70 Cooling water flow passage 80 Lubricating oil flow pipe 100 Housing 101 Bearing housing part

Claims (7)

転がり軸受と、金属製又は樹脂製のハウジングとが一体化した転がり軸受ユニットの製造方法において、
前記転がり軸受をコアとして前記ハウジング用の金型に装着し、前記金型に金属溶湯又は溶融樹脂を流し込み、凝固させる、転がり軸受ユニットの製造方法。 In a method for manufacturing a rolling bearing unit in which a rolling bearing and a metal or resin housing are integrated,
A method for manufacturing a rolling bearing unit, comprising: mounting the rolling bearing as a core in a mold for the housing, and pouring molten metal or molten resin into the mold and solidifying it. 前記転がり軸受の外輪及び内輪の少なくとも一方を冷却しながら、前記金型に前記金属溶湯又は前記溶融樹脂を流し込み、凝固させる、請求項１に記載の転がり軸受ユニットの製造方法。 The method for manufacturing a rolling bearing unit according to claim 1, wherein the molten metal or the molten resin is poured into the mold and solidified while cooling at least one of an outer ring and an inner ring of the rolling bearing. 前記転がり軸受の内輪と外輪との間の空間に潤滑油を供給しながら、前記金型に前記金属溶湯又は前記溶融樹脂を流し込み、凝固させる、請求項１又は２に記載の転がり軸受ユニットの製造方法。 Manufacturing the rolling bearing unit according to claim 1 or 2, wherein the molten metal or the molten resin is poured into the mold and solidified while supplying lubricating oil to a space between an inner ring and an outer ring of the rolling bearing. Method. 前記転がり軸受にグリースを充填した状態で、前記金型に前記金属溶湯又は前記溶融樹脂を流し込み、凝固させる、請求項１又は２に記載の転がり軸受ユニットの製造方法。 3. The method for manufacturing a rolling bearing unit according to claim 1, wherein the molten metal or the molten resin is poured into the mold and solidified while the rolling bearing is filled with grease. 前記金属溶湯が、アルミニウム合金又はマグネシウム合金の溶湯である、請求項１又は２に記載の転がり軸受ユニットの製造方法。 The method for manufacturing a rolling bearing unit according to claim 1 or 2, wherein the molten metal is a molten aluminum alloy or a magnesium alloy. 転がり軸受と、金属製のハウジングとが一体化した転がり軸受ユニットにおいて、
前記転がり軸受をコアとする前記ハウジングとの鋳造品である、転がり軸受ユニット。 In a rolling bearing unit that integrates a rolling bearing and a metal housing,
A rolling bearing unit that is a cast product with the housing and having the rolling bearing as a core. 転がり軸受と、樹脂製のハウジングとが一体化した転がり軸受ユニットにおいて、
前記転がり軸受をコアとする前記ハウジングとの射出成形品である、転がり軸受ユニット。 In a rolling bearing unit that integrates a rolling bearing and a resin housing,
A rolling bearing unit that is an injection molded product with the housing having the rolling bearing as a core.
JP2022109317A 2022-07-06 2022-07-06 Rolling bearing unit production method and rolling bearing unit Pending JP2024007912A (en)

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