JPH07103337A - Seal ring manufacturing method for floating seal - Google Patents
Seal ring manufacturing method for floating sealInfo
- Publication number
- JPH07103337A JPH07103337A JP24768393A JP24768393A JPH07103337A JP H07103337 A JPH07103337 A JP H07103337A JP 24768393 A JP24768393 A JP 24768393A JP 24768393 A JP24768393 A JP 24768393A JP H07103337 A JPH07103337 A JP H07103337A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- seal ring
- flange portion
- base body
- cylindrical portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mechanical Sealing (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ブルドーザや油圧ショ
ベルの装軌車両の履帯式走行装置の回転部分に装着され
るフローティングシールを構成するシールリングの製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a seal ring which constitutes a floating seal mounted on a rotating portion of a track type traveling device of a tracked vehicle such as a bulldozer or a hydraulic excavator.
【０００２】[0002]
【従来の技術】ブルドーザや油圧ショベルの装軌車両の
履帯式走行装置としては、起動輪と遊動輪に履帯を巻掛
けると共に、その履帯を上転輪、下転輪でガイドするも
のが知られ、これらの起動輪、遊動輪、上下転輪の回転
部にはフローティングシールを装着して封入した潤滑油
のもれを防止するとともに、泥砂等が侵入しないように
している。2. Description of the Related Art As a track type traveling device of a tracked vehicle such as a bulldozer or a hydraulic excavator, one in which a crawler belt is wound around an activating wheel and an idle wheel and the crawler belt is guided by upper and lower rolling wheels is known. A floating seal is attached to the rotating parts of the starter wheel, idler wheel, and upper and lower wheels to prevent leakage of the enclosed lubricating oil and prevent mud and sand from entering.
【０００３】前述のフローティングシールは一対のシー
ルリングを静止側ハウジングと回転側ハウジングの内周
面に各々ゴム製の負荷リングを介して気密的に支持し、
その一対のシールリングの対向端面を密接摺動させたも
のであり、そのシールリングの摺動面は耐久性向上のた
めに高硬度としてある。The above-mentioned floating seal hermetically supports a pair of seal rings on the inner peripheral surfaces of the stationary side housing and the rotating side housing via rubber load rings, respectively.
The opposite end faces of the pair of seal rings are closely slid together, and the sliding faces of the seal rings have high hardness to improve durability.
【０００４】前述のシールリングの製造方法としては、
素材を鋳造により所定断面形の基体とし、この基体を機
械加工した後に全体を焼入れ、焼戻しの熱処理をして再
び機械加工するものが知られている。As a method of manufacturing the aforementioned seal ring,
It is known that a material is cast into a base body having a predetermined cross-sectional shape, the base body is machined, then the whole body is quenched and heat treated for tempering, and then machined again.
【０００５】[0005]
【発明が解決しようとする課題】かかる製造方法である
と、鋳造工程、機械加工工程、熱処理工程、機械加工工
程と多くの工程を必要とするから製造コストが高くな
る。また、熱処理に伴なう歪が大きく発生し、熱処理後
の機械加工による削り代を大きくして歪を取り除く必要
があり、歩留り低下や加工費増大となってコストが高く
なる。なお、この熱処理に伴なう歪を小さくするために
はプレスクエンチ設備を用いれば良いが、このプレスク
エンチ設備は比較的大がかりな設備であってコスト高と
なる。According to such a manufacturing method, since many steps such as a casting step, a machining step, a heat treatment step, and a machining step are required, the manufacturing cost becomes high. Further, a large amount of strain is generated due to the heat treatment, and it is necessary to increase the machining allowance after the heat treatment to remove the strain, resulting in a decrease in yield and an increase in processing cost, resulting in an increase in cost. It should be noted that press quench equipment may be used in order to reduce the strain associated with the heat treatment, but this press quench equipment is a relatively large-scale equipment and is costly.
【０００６】そこで、本発明は前述の課題を解決できる
ようにしたフローティングシールのシールリング製造方
法を提供することを目的とする。Therefore, an object of the present invention is to provide a method for manufacturing a seal ring of a floating seal, which can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】円筒部１１とフランジ部
１２を有するシールリング基体１３を板金加工により作
製し、このシールリング基体１３の円筒部１１を支持し
た状態でフランジ部１２を高周波焼入れしてシールリン
グとするフローティングシールのシールリング製造方
法。A seal ring base body 13 having a cylindrical portion 11 and a flange portion 12 is produced by sheet metal working, and the flange portion 12 is induction hardened while the cylindrical portion 11 of the seal ring base body 13 is supported. Seal ring manufacturing method for floating seals.
【０００８】[0008]
【作 用】筒状部１１とフランジ部１２を有するシー
ルリング基体１３を板金加工により作成し、そのシール
リング基体１３を高周波焼入れすれば良いから、製造工
程が少なく製造コストが安くなるし、熱処理による歪を
取り除く必要がないから後工程としての機械加工が不必
要となって歩留りが向上するし、加工費を安くできる。[Operation] Since the seal ring base body 13 having the tubular portion 11 and the flange portion 12 is formed by sheet metal working and the seal ring base body 13 is induction hardened, the number of manufacturing steps is small and the manufacturing cost is low. Since it is not necessary to remove the distortion caused by the above, machining as a post-process becomes unnecessary, the yield is improved, and the processing cost can be reduced.
【０００９】[0009]
【実 施 例】図１に示すように、静止側ハウジング１
の内周面１ａと回転側ハウジング２の内周面２ａとに一
対のシールリング３，３がゴム製の負荷リング４を介し
てそれぞれ気密的に設けられ、この一対のシールリング
３，３が密着摺動し、その摺動部５によって封入した潤
滑油がもれるのを防止するとともに、泥砂が侵入するこ
とを防止してフローティングシールを構成している。[Example] As shown in Fig. 1, the stationary housing 1
A pair of seal rings 3 and 3 are airtightly provided on the inner peripheral surface 1a of the rotor 1 and the inner peripheral surface 2a of the rotation-side housing 2 via a rubber load ring 4, respectively. The sliding seal 5 prevents the lubricating oil enclosed by the sliding contact from leaking and prevents mud and sand from entering to form a floating seal.
【００１０】次にシールリング３の製造方法を説明す
る。図２に示すように、例えばＳＫ−７材により所定の
厚さで所定形状のリング状となった基板１０をプレス機
Ａにより曲げ加工して図３に示すように筒状部１１とフ
ランジ部１２を有するシールリング基体１３とする。例
えばこのシールリング基体１３の厚さｔは２ｍｍ、筒状
部１１の外径ｄは９６ｍｍ、フランジ部１２の外径Ｄは
１０９ｍｍ、高さＨは８．２ｍｍ、円筒部１１とフラン
ジ部１２のなす角度θが直角となっている。なお、平板
をリング状に打ち抜くと同時に曲げ加工してシールリン
グ基体１３としても良い。つまり、板金加工によりシー
ルリング基体を作成すれば良い。Next, a method of manufacturing the seal ring 3 will be described. As shown in FIG. 2, for example, a ring-shaped substrate 10 having a predetermined thickness and a predetermined shape made of SK-7 material is bent by a press machine A, and a cylindrical portion 11 and a flange portion are formed as shown in FIG. The seal ring base 13 having the reference numeral 12 is provided. For example, the thickness t of the seal ring base 13 is 2 mm, the outer diameter d of the tubular portion 11 is 96 mm, the outer diameter D of the flange portion 12 is 109 mm, the height H is 8.2 mm, and the cylindrical portion 11 and the flange portion 12 are The angle θ is right. The flat plate may be punched into a ring shape and bent at the same time to form the seal ring base 13. That is, the seal ring substrate may be prepared by sheet metal working.
【００１１】前記シールリング基体１３を図４に示す高
周波焼入装置Ｂにセットしてフランジ部１２を高周波焼
入れする。前記高周波焼入装置Ｂはターンテーブル１４
上に設置した支持治具１５と、スプレージャットを備え
たリング状の高周波誘導加熱コイル１６により成り、そ
の支持治具１５はリング状の外周ガイド１７と円板状の
内周ガイド１８により環状隙間１９を有する形状とな
り、その環状隙間１９にシールリング基体１３の円筒部
１１が嵌合して支持され、かつ外周ガイド１７の環状凹
部１７ａにフランジ部１２が嵌合して支持される。前記
外周ガイド１７と内周ガイド１８の環状隙間１９の寸法
はシールリング基体１３の円筒部１１の厚さ＋許容公差
となっている。前記高周波誘導加熱コイル１６はシール
リング基体１３のフランジ部１２と所定の間隔（例えば
１ｍｍ）を置いて対向している。The seal ring base 13 is set in the induction hardening apparatus B shown in FIG. 4, and the flange portion 12 is induction hardened. The induction hardening apparatus B is a turntable 14
It is composed of a support jig 15 installed above and a ring-shaped high-frequency induction heating coil 16 equipped with a spray jack. The support jig 15 has a ring-shaped outer peripheral guide 17 and a disc-shaped inner peripheral guide 18 to form an annular gap. The cylindrical portion 11 of the seal ring base 13 is fitted and supported in the annular gap 19 and the flange portion 12 is fitted and supported in the annular recess 17a of the outer peripheral guide 17. The size of the annular gap 19 between the outer peripheral guide 17 and the inner peripheral guide 18 is the thickness of the cylindrical portion 11 of the seal ring base 13 plus the allowable tolerance. The high frequency induction heating coil 16 is opposed to the flange portion 12 of the seal ring substrate 13 with a predetermined space (for example, 1 mm).
【００１２】前述したようにシールリング基体１３を支
持治具１５により支持した状態でターンテーブル１４を
回転しながら高周波誘導加熱コイル１６で加熱した後に
冷媒で冷却して高周波焼入れ（熱処理）し、その後にフ
ランジ部１２の外周寄りをラップ加工してシールリング
とする。ここで、高周波焼入れ条件は、周波数１５０Ｋ
Ｈｚ、電圧６．５ＫＶ、電力３０ＫＷ、加熱時間６秒で
あり、冷媒は水で冷却時間は４秒である。このように、
ターンテーブル１４を回転して高周波焼入れすることで
均一な高周波焼入れができる。As described above, while the seal ring substrate 13 is supported by the supporting jig 15, the turntable 14 is rotated while being heated by the high frequency induction heating coil 16 and then cooled by a refrigerant to be induction hardened (heat treated), and thereafter. The outer peripheral portion of the flange portion 12 is lapped to form a seal ring. Here, the induction hardening condition is a frequency of 150K.
Hz, voltage 6.5 KV, electric power 30 KW, heating time 6 seconds, cooling medium is water and cooling time is 4 seconds. in this way,
Uniform induction hardening can be performed by rotating the turntable 14 and induction hardening.
【００１３】前述のように高周波焼入れすることでシー
ルリング基体１３の円筒部１１とフランジ部１２は図５
の破線で示す方向に歪が発生して円筒部１１の内径ｄ1
が小さくなると共に、円筒部１１とフランジ部１２のな
す角度θが直角よりも大きくなるが、円筒部１１は支持
治具１５の環状隙間１９内に嵌合されて拘束されている
のでその内径ｄ1 の変化が僅かになるし、円筒部１１と
フランジ部１２のなす角度θが直角より大きくなること
は図６に示すように一対のシールリング１３のフランジ
部１２，１２がテーパ状となって外周寄り部分１２ａが
相互に接することになるのでフローティングシール本来
の機能を発揮するので、特別な加工が不要となるから好
ましい。By induction hardening as described above, the cylindrical portion 11 and the flange portion 12 of the seal ring base 13 are formed as shown in FIG.
Inside diameter d 1 of the cylindrical portion 11 distortion occurs in the direction indicated by a broken line
Becomes smaller and the angle θ formed by the cylindrical portion 11 and the flange portion 12 becomes larger than a right angle, but since the cylindrical portion 11 is fitted and restrained in the annular gap 19 of the support jig 15, its inner diameter d The change in 1 is small and the angle θ formed by the cylindrical portion 11 and the flange portion 12 is larger than a right angle, as shown in FIG. 6, the flange portions 12 and 12 of the pair of seal rings 13 are tapered. Since the outer peripheral portion 12a comes into contact with each other, the original function of the floating seal is exhibited, and special processing is not required, which is preferable.
【００１４】つまり、フローティングシールはその機能
上一対のシールリング対向端面をテーパ状として外周寄
りが接するようにしており、従来は熱処理後に機械加工
してテーパ状としていたが、本発明によれば熱処理によ
りテーパ状となるから従来のように熱処理後のテーパ加
工が不要となる。That is, the floating seal has a pair of end faces facing each other in a tapered shape so that the outer seals come into contact with each other in the function thereof. Conventionally, the floating seal was machined into a tapered shape. However, according to the present invention, the heat treatment is performed. As a result, the taper shape eliminates the need for taper processing after heat treatment as in the conventional case.
【００１５】次に前述のようにして高周波焼入れたシー
ルリング基体１３の円筒部１１の内径ｄ1 変化と、円筒
部１１とフランジ部１２とのなす角度θの変化を測定し
たところ、円筒部１１の内径ｄ1 変化は下記の表１に示
すようになった。但し内径ｄ1 を周方向に９０度間隔で
４ヶ所測定した。Next, when a change in the inner diameter d 1 of the cylindrical portion 11 of the seal ring base body 13 induction-hardened as described above and a change in the angle θ formed by the cylindrical portion 11 and the flange portion 12 were measured, the cylindrical portion 11 The change in the inner diameter d 1 of the above was as shown in Table 1 below. However, the inner diameter d 1 was measured at four positions at 90 ° intervals in the circumferential direction.
【００１６】[0016]
【表１】 [Table 1]
【００１７】円筒部１１とフランジ部１２のなす角度
θ、この場合にはシールリング基体１３の高さＨの変化
（フランジ部１２のそり）として測定した結果は下記表
２に示すようになった。但し、高さＨを周方向に等間隔
で８ヶ所測定した。The angle θ formed by the cylindrical portion 11 and the flange portion 12, in this case, the change in the height H of the seal ring base body 13 (warpage of the flange portion 12) was measured, and the results are shown in Table 2 below. . However, the height H was measured at eight locations at equal intervals in the circumferential direction.
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
【発明の効果】筒状部１１とフランジ部１２を有するシ
ールリング基体１３を作成し、そのシールリング基体１
３を高周波焼入れすれば良いから、製造工程が少なく製
造コストが安くなるし、熱処理による歪を取り除く必要
がないから後工程としての機械加工が不要となって歩留
りが向上するし、加工費を安くできる。The seal ring base 13 having the tubular portion 11 and the flange 12 is prepared, and the seal ring base 1 is manufactured.
3 can be induction-hardened, so the number of manufacturing processes is small and the manufacturing cost is low. Since it is not necessary to remove the distortion caused by heat treatment, the machining process as a post-process is not required, the yield is improved, and the processing cost is low. it can.
【図１】フローティングシールの断面図である。FIG. 1 is a sectional view of a floating seal.
【図２】シールリング基体の加工説明図である。FIG. 2 is an explanatory view of processing a seal ring base.
【図３】シールリング基体の断面図である。FIG. 3 is a cross-sectional view of a seal ring base.
【図４】高周波焼入れ装置の断面図である。FIG. 4 is a sectional view of an induction hardening apparatus.
【図５】シールリング基体の焼入れによる歪説明図であ
る。FIG. 5 is an explanatory diagram of distortion caused by quenching of the seal ring substrate.
【図６】一対のシールリングの当接状態の説明図であ
る。FIG. 6 is an explanatory diagram of a contact state of a pair of seal rings.
１１…円筒部、１２…フランジ部、１３…シールリング
基体、１４…ターンテーブル、１５…支持治具、１６…
高周波誘導加熱コイル、１７…外周ガイド、１８…内周
ガイド、１９…環状隙間。11 ... Cylindrical part, 12 ... Flange part, 13 ... Seal ring base, 14 ... Turntable, 15 ... Support jig, 16 ...
High frequency induction heating coil, 17 ... outer peripheral guide, 18 ... inner peripheral guide, 19 ... annular gap.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長谷川 宏 大阪府大阪市西淀川区千舟２−11−24 高 周波熱錬株式会社大阪工場内 (72)発明者 安藤 晴彦 大阪府枚方市上野３−１−１ 株式会社小 松製作所大阪工場内 (72)発明者 大川 和英 大阪府枚方市上野３−１−１ 株式会社小 松製作所大阪工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Hasegawa 2-11-24 Chifune, Nishiyodogawa-ku, Osaka-shi, Osaka Prefecture Osaka Plant (72) Inventor Haruhiko Ando 3-1, Ueno, Hirakata-shi, Osaka Prefecture -1 Komatsu Ltd. Osaka Plant (72) Inventor Kazuhide Okawa 3-1-1 Ueno, Hirakata City, Osaka Prefecture Komatsu Ltd. Osaka Plant
Claims (2)
ールリング基体１３を板金加工により作製し、このシー
ルリング基体１３の円筒部１１を支持した状態でフラン
ジ部１２を高周波焼入れしてシールリングとすることを
特徴とするフローティングシールのシールリング製造方
法。1. A seal ring substrate 13 having a cylindrical portion 11 and a flange portion 12 is produced by sheet metal working, and the flange portion 12 is induction hardened in a state of supporting the cylindrical portion 11 of the seal ring substrate 13 to form a seal ring. A method for manufacturing a seal ring for a floating seal, comprising:
ング基体１３の円筒部１１を嵌合して支持してフランジ
部１２を上向き姿勢とし、この状態で支持治具１５とと
もにシールリング基体１３を回転させながら高周波誘導
加熱コイル１６によりフランジ部１２を焼入れするよう
にした請求項１記載のフローティングシールのシールリ
ング製造方法。2. The cylindrical portion 11 of the seal ring base 13 is fitted into and supported by the annular gap 19 of the support jig 15 so that the flange portion 12 is oriented upward. The method for producing a seal ring of a floating seal according to claim 1, wherein the flange portion 12 is quenched by the high frequency induction heating coil 16 while rotating the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24768393A JP3458242B2 (en) | 1993-10-04 | 1993-10-04 | Method of manufacturing seal ring for floating seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24768393A JP3458242B2 (en) | 1993-10-04 | 1993-10-04 | Method of manufacturing seal ring for floating seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07103337A true JPH07103337A (en) | 1995-04-18 |
| JP3458242B2 JP3458242B2 (en) | 2003-10-20 |
Family
ID=17167100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24768393A Expired - Fee Related JP3458242B2 (en) | 1993-10-04 | 1993-10-04 | Method of manufacturing seal ring for floating seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3458242B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142298A1 (en) * | 2006-06-08 | 2007-12-13 | Nsk Ltd. | Shell needle bearing with seal ring and its manufacturing method |
| JP2008014488A (en) * | 2006-06-08 | 2008-01-24 | Nsk Ltd | Shell mold needle bearing with sealing ring |
| JP2008173674A (en) * | 2007-01-19 | 2008-07-31 | Nsk Ltd | Method of manufacturing metallic ring |
| JP2012081520A (en) * | 2006-06-08 | 2012-04-26 | Nsk Ltd | Method of manufacturing shell type needle bearing with seal ring |
| CN104212958A (en) * | 2013-06-02 | 2014-12-17 | 谭旭 | Technology process of lateral gear steam-sealing vacuum heat treatment |
| CN112943936A (en) * | 2019-12-11 | 2021-06-11 | 股份公司摩拓乐 | Floating seal assembly |
| DE202022101203U1 (en) | 2022-03-04 | 2023-06-07 | Procudi Gmbh | Hard sealing ring with sliding surface and sliding sealing device |
-
1993
- 1993-10-04 JP JP24768393A patent/JP3458242B2/en not_active Expired - Fee Related
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| JP2008014488A (en) * | 2006-06-08 | 2008-01-24 | Nsk Ltd | Shell mold needle bearing with sealing ring |
| JP2012081520A (en) * | 2006-06-08 | 2012-04-26 | Nsk Ltd | Method of manufacturing shell type needle bearing with seal ring |
| US8177435B2 (en) | 2006-06-08 | 2012-05-15 | Nsk Ltd. | Manufacturing method of a drawn cup needle roller bearing having seal ring |
| WO2007142298A1 (en) * | 2006-06-08 | 2007-12-13 | Nsk Ltd. | Shell needle bearing with seal ring and its manufacturing method |
| JP2008173674A (en) * | 2007-01-19 | 2008-07-31 | Nsk Ltd | Method of manufacturing metallic ring |
| CN104212958A (en) * | 2013-06-02 | 2014-12-17 | 谭旭 | Technology process of lateral gear steam-sealing vacuum heat treatment |
| CN112943936A (en) * | 2019-12-11 | 2021-06-11 | 股份公司摩拓乐 | Floating seal assembly |
| JP2021092310A (en) * | 2019-12-11 | 2021-06-17 | ドゥーサン コーポレイション | Floating seal assembly |
| KR20210073750A (en) * | 2019-12-11 | 2021-06-21 | 주식회사 모트롤 | Floating seal assembly |
| DE202022101203U1 (en) | 2022-03-04 | 2023-06-07 | Procudi Gmbh | Hard sealing ring with sliding surface and sliding sealing device |
| WO2023165984A1 (en) | 2022-03-04 | 2023-09-07 | Procudi Gmbh | Hard sealing ring having an anti-friction surface, anti-friction sealing device, and production method |
| EP4328026A2 (en) | 2022-03-04 | 2024-02-28 | procudi GmbH | Hard seal ring with sliding running surface and sliding running seal device |
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| JP3458242B2 (en) | 2003-10-20 |
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