JPS58197219A - High frequency hardening device - Google Patents
High frequency hardening deviceInfo
- Publication number
- JPS58197219A JPS58197219A JP57078804A JP7880482A JPS58197219A JP S58197219 A JPS58197219 A JP S58197219A JP 57078804 A JP57078804 A JP 57078804A JP 7880482 A JP7880482 A JP 7880482A JP S58197219 A JPS58197219 A JP S58197219A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- cylindrical body
- heating
- circumferential surface
- coil
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はいわゆるトリポードハウジング部材の如き不等
肉厚部を有する筒状体内面の焼入に使用して好適な高周
波焼入装置に関する〇従来、第１図及び第２図に示す如
く、不等肉厚部を有する筒状体であるトリポードハウジ
ング部材１０ローラ溝２内面の高周波焼入れに際しては
、ローラ溝２の側面２ａに沿って挿入された高周波加熱
コイル３によって、直接に負荷を受ける該側面２ａのみ
を一度に加熱し、ついで加熱部４を適宜手段によって冷
却する、いわゆる−発焼入れの高周波焼入れ装置が用い
られている０
この装置、によって焼入れられたローラ溝側面２ａの焼
入れ深さく１）は、ローラ溝２外周の薄肉部５の方向に
近づくにつれて第１図図示の如く浅くなり・薄肉部５の
内面５ａは全く焼入れをされていないのが通例である〇
これは、該トリポードハウジング部材１の使用目的から
して、ローラ溝２の側面２ａは負荷に対する強度と耐摩
耗性を必要とするために充分に焼入れし・他方、薄肉部
５は負荷に対する強度は考慮する必要がなく、シたがっ
てこの部分は焼入れしないよう設計されていたためであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an induction hardening apparatus suitable for use in hardening the inner surface of a cylindrical body having uneven wall thickness, such as a so-called tripod housing member. As shown in the figure, during induction hardening of the inner surface of the roller groove 2 of the tripod housing member 10, which is a cylindrical body with uneven wall thickness, the high frequency heating coil 3 inserted along the side surface 2a of the roller groove 2 directly heats the inner surface of the roller groove 2. A so-called induction hardening device is used, which heats only the side surface 2a that is subjected to a load at a time, and then cools the heating section 4 by appropriate means.The roller groove side surface 2a hardened by this device is used. The hardening depth 1) becomes shallower as it approaches the thin walled portion 5 on the outer periphery of the roller groove 2, as shown in FIG. 1.The inner surface 5a of the thin walled portion 5 is usually not hardened at all Considering the purpose of use of the tripod housing member 1, the side surface 2a of the roller groove 2 is sufficiently hardened because it requires strength against load and wear resistance.On the other hand, the strength against load of the thin wall portion 5 is taken into account. This is because there was no need to do so, and this part was designed not to be hardened.
しかし、第１図に示すトリポードハウジング部材１の断
面形状からも理解できることであるが・ローラ溝２の内
側面２ａを上記態様で焼入れる場合には、該側面２ａは
内側に収縮変形する。However, as can be understood from the cross-sectional shape of the tripod housing member 1 shown in FIG. 1, when the inner side surface 2a of the roller groove 2 is hardened in the above manner, the side surface 2a shrinks and deforms inward.
この変形は後工程で修正されているが、工程数が増加す
るため、上記修正はトリポードハウ −ジング部
材１の製造コストにも影響している。Although this deformation is corrected in a subsequent process, the above correction also affects the manufacturing cost of the tripod housing member 1 because the number of steps increases.
さらに、最近の試験結果では、第１図においてローラ溝
２の側面部２ａと、焼入れされていたい薄肉部５の内面
５ａとの境界部６では、硬さが急激に変化しており１こ
の部分に応力集中による割れが発生する場合があり、強
度が不足することが知見されており、その改善策が検討
されている。Furthermore, recent test results show that in FIG. 1, the hardness changes rapidly at the boundary 6 between the side surface 2a of the roller groove 2 and the inner surface 5a of the thin wall portion 5 that is to be hardened. It is known that cracks may occur due to stress concentration, resulting in insufficient strength, and measures to improve this are being considered.
以上のように、従来の高周波焼入装置によるトリポード
ハウジング部材等の不等肉厚部を有する筒状体の内面焼
入れには、重要な問題が残されている。As described above, important problems remain in internal hardening of cylindrical bodies having uneven wall thickness parts, such as tripod housing members, using conventional induction hardening equipment.
また・上記トリポードハウジング部材以外の構造部材で
あって、複数個の溝を有する不等肉厚部材（図示せず）
では、単一の高周波コイルで６溝の内面を一つづつ焼入
れし・これを繰返して全数の溝を焼入れす颯装置も使用
されているが、かかる焼入製餅では焼入完了までに長時
間を要する。Also, a structural member other than the above-mentioned tripod housing member, a member of unequal thickness having a plurality of grooves (not shown)
In 2015, a method of hardening the inner surfaces of six grooves one by one using a single high-frequency coil and then repeating this process to harden all the grooves is also used. It takes time.
本発明は上述した従来の装置が有する諸問題を解決し、
焼入時の収縮変形量が小さく・疲労強度が向上する、主
として不等肉厚部を有する筒状の被焼入体内面に適用さ
れる高周波焼入装置を提供することを目的とし、その要
旨とするところは、上記筒状体の内周面全面と所定間隔
をおいて対峙、配設しうる加熱手段・及び該加熱手段に
よる加熱直後に上記内周面全面を冷却しうる第１冷却手
段からなる内部ユニットと、上記筒状体の薄肉部外周面
と所定間隔をおいて対峙、配設され上記薄肉部の外周面
を冷却しう５−
る第２冷却手段とから構成され、上記筒状体の軸方向に
沿って該筒状体との間で相対的な移動が可能である高周
波焼入装置にある。The present invention solves the problems of the conventional devices mentioned above,
The purpose of the present invention is to provide an induction hardening device which is mainly applied to the inner surface of a cylindrical object to be hardened, which has a portion of uneven wall thickness, which reduces the amount of shrinkage deformation during hardening and improves fatigue strength. A heating means that can be disposed facing the entire inner circumferential surface of the cylindrical body at a predetermined interval, and a first cooling means that can cool the entire inner circumferential surface immediately after heating by the heating means. and a second cooling means, which is disposed facing the outer circumferential surface of the thin-walled portion of the cylindrical body at a predetermined distance and cools the outer circumferential surface of the thin-walled portion, The induction hardening apparatus is capable of relative movement between the cylindrical body and the cylindrical body along the axial direction of the cylindrical body.
以下本発明の好適な実施例を図面により説明する。なお
・第１図及び第２図に示す従来例と同一要素は同一符号
にて表示する。Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the same elements as those in the conventional example shown in FIGS. 1 and 2 are indicated by the same reference numerals.
第３図乃至第７図は本発明の一実施例を示し、第３図は
トリダートハウジング部材１と本実施例に係る高周波焼
入装置７の焼入前の配置状態を示す要部斜視図であり、
第４図は第３図を下方より見た斜視図である。3 to 7 show one embodiment of the present invention, and FIG. 3 is a perspective view of essential parts showing the arrangement state of the Tridart housing member 1 and the induction hardening device 7 according to this embodiment before hardening. and
FIG. 4 is a perspective view of FIG. 3 seen from below.
本実施例では高周波焼入装置７は適宜手段により固定さ
れており、上記トリ、ボードハウジング部材１はその開
口部１ａを下に向けて配設され、図示しない適宜な昇降
手段により、図中上下方向に移動自在になつ工いる０
高周波焼入装置７は、加熱手段８と第１冷却手段９とか
らなる内部ユニット１０と、第２冷却手段１１とを備え
ている。In this embodiment, the induction hardening device 7 is fixed by appropriate means, and the bird and board housing member 1 are arranged with their openings 1a facing downward, and are moved up and down in the figure by appropriate elevating means (not shown). The induction hardening apparatus 7 is provided with an internal unit 10 consisting of a heating means 8 and a first cooling means 9, and a second cooling means 11.
第５図は上記トリポードハウジング部材１の６−
中空内部に上記高周波焼入装置７の内部ユニット１０を
下方から移動嵌入させた状態、即ち焼入時の状態を示す
要部縦断面図であり、第６図及び第７図は各々第５図の
Ｂ−Ｂ線断面図及びＣ−Ｃ線断面図である。FIG. 5 is a vertical cross-sectional view of a main part showing a state in which the internal unit 10 of the induction hardening device 7 is moved and fitted into the hollow interior of the tripod housing member 1 from below, that is, a state during hardening. 6 and 7 are a sectional view taken along line B-B and line C-C of FIG. 5, respectively.
第３図乃至第７図に示す如く、上記内部ユニツ）１０は
、本実施例では基台１２に穿設した透孔１３内を上方に
突出して配置された柱状部１４の先端１４ａに、三方に
等分して振り分けられて、計三個所配設され、第６図及
び第７図に示すように、上記トリポードハウジング部材
１内に嵌入した場合、即ち焼入時に三個所のローラ溝２
の内周面２ａ全面と所定間隔をおいて対峙、配設される
ような大きさ・形状に形成されている。As shown in FIGS. 3 to 7, in this embodiment, the internal unit 10 is attached from three directions to the tip 14a of the columnar portion 14 which is arranged to protrude upwardly within the through hole 13 bored in the base 12. As shown in FIG. 6 and FIG.
It is formed in such a size and shape that it faces and is disposed at a predetermined distance from the entire inner circumferential surface 2a of.
内部ユニット１０を構成する加熱手段８及び第１冷却手
段９は、第５図図示のように高周波焼入装Ｍ７の昇降方
向（トリポードハウジング部材１の軸方向）に沿って、
加熱手段８が該昇降方向の上方に・また第１冷却手段９
が下方に位置するように一体に成形されている。The heating means 8 and the first cooling means 9 constituting the internal unit 10 are arranged along the vertical direction of the induction hardening M7 (the axial direction of the tripod housing member 1) as shown in FIG.
A heating means 8 is provided above the ascending and descending direction, and a first cooling means 9 is provided.
It is integrally molded so that it is located at the bottom.
上記加熱手段８は、ｍなどの導体から成形された高周波
加熱コイル１５と・該コイル１５の上記軸方向前後側面
（第５図における上下側面）を糖い、トリポードハウジ
ング部側１の内周面２ａと対峙する側面１５１のみを開
放して高周波電流による銹導加熱効果を高める、ダスト
コア又は珪素鋼板の如き磁性体１６とからなる０高周波
加熱コイル１５は第５図及び第６図に図示の如く、パイ
プ状に形成され・中空内部１５２を冷却液が循環しうる
ようになっている０また・コイル１５は上記した如く柱
状部材１４０回りに三方に等分割して振り分けられて配
設され、各コイル１５ａ ＋ １５ｂ ＋ １５ｃの両
端部は、柱状部材１４の軸方向にリード管１７．１８と
して垂下延長され、その先端は図示しない高周波電源に
接続されるとともに、各一対のリード管１７ 、１８の
一方（本実施例では１７）が給水源に連結された給水管
として、また他方（本実施例では１８）が排水手段へと
連結された排水管として機能する０
なお、第６図に示す如く、隣接配置された−のコイル１
５の給水リード管１７と他の隣接するフィル１５の排水
リード管１８とは、適宜な電、気的絶縁体１９にて絶縁
されており、また柱状体１４自体も電気的絶縁物質で形
成されている。The heating means 8 includes a high-frequency heating coil 15 formed from a conductor such as m, and the inner circumferential surface of the tripod housing side 1. A high-frequency heating coil 15 consisting of a magnetic material 16 such as a dust core or a silicon steel plate, which opens only the side surface 151 facing the heating element 2a and enhances the rust conduction heating effect by high-frequency current, is as shown in FIGS. 5 and 6. As described above, the coils 15, which are formed in a pipe shape and allow cooling liquid to circulate through the hollow interior 152, are arranged around the columnar member 140 in three equal parts, and each Both ends of the coils 15a + 15b + 15c extend downward in the axial direction of the columnar member 14 as lead pipes 17 and 18, and their tips are connected to a high frequency power source (not shown), and each pair of lead pipes 17 and 18 is connected to a high frequency power source (not shown). One (17 in this example) functions as a water supply pipe connected to a water supply source, and the other (18 in this example) functions as a drain pipe connected to a drainage means. , - coil 1 arranged adjacently
The water supply lead pipe 17 of No. 5 and the drainage lead pipe 18 of the other adjacent fill 15 are insulated by a suitable electrical and gas insulator 19, and the columnar body 14 itself is also formed of an electrically insulating material. ing.
また、各コイル１５の外側面は、焼入時において第６図
に示す如く・各ローラ溝２の内周面２ａのうち図示しな
いローラの滑動面１８とは最も近接して対峙配設され、
該ローラ滑動面１８ 、１８を連結する薄肉部５の内周
面５ａとは、若干距離をおくような形状に成形されてい
る０
上記第１冷却手段９は、本実施例では第５図及び第７図
に示す如く、加熱手段８の下部に各々一体に組み付けら
れ、内部に中空部９１を形成した薄肉壁９２には、放射
状に冷却液のノズル９３が所定数穿設されて、ローラ溝
２の内面２ａ全面に冷却液を噴射しうるように構成され
た冷却ジャケットからなる０
なお、上記ノズル９３の方向は、第５図において若干下
向きに穿設、形成されている〇９−
加熱部８と同様に三方に等分割して振り分けられた三個
の冷却ジャケット９は、各々管路９４により柱状体１４
内に配管された冷却液圧送室２０に連結されている◇該
圧送管２ｏの下部は１図示しない冷却液タンクに連結さ
れ、適宜圧送手段により冷却液を上記各冷却ジャチット
９内に圧送する。Further, during hardening, the outer surface of each coil 15 is disposed closest to and facing the sliding surface 18 of a roller (not shown) among the inner circumferential surfaces 2a of each roller groove 2, as shown in FIG.
In this embodiment, the first cooling means 9 is shaped such that it is slightly spaced from the inner circumferential surface 5a of the thin wall portion 5 that connects the roller sliding surfaces 18, 18. As shown in FIG. 7, a predetermined number of cooling liquid nozzles 93 are radially bored in a thin wall 92 which is integrally assembled at the lower part of the heating means 8 and has a hollow part 91 formed inside. The nozzle 93 is formed slightly downward in the direction of the heating part 9 in FIG. 5. 8, three cooling jackets 9 equally divided into three directions are connected to the columnar body 14 through pipes 94.
The lower part of the pressure-feeding pipe 2o is connected to a coolant tank (not shown), and the coolant is force-fed into each cooling unit 9 by appropriate pressure-feeding means.
上記第２冷却手段１１は・本実施例ではトリポードハウ
ジング部材１の上記薄肉部５の外周面５ｂと焼入時に所
定間隔をおいて対峙、配設される冷却ジャケットからな
り、中空部１１１を形成する薄肉壁１１２のうち上記薄
肉部５に対向する面には、所定数の／スル１１３が穿設
され、冷却ジャケット１１と図示しない冷却液タンクと
を結ぶ圧送管２１により冷却液を供給されるようになっ
ている・
なお、第３図図示の如く内部ユニット】０と第２冷却手
段１１とは、すべて略同−高さだけ基台１２から突出配
置されている。In this embodiment, the second cooling means 11 comprises a cooling jacket that is disposed facing the outer circumferential surface 5b of the thin wall portion 5 of the tripod housing member 1 at a predetermined interval during hardening, and forms a hollow portion 111. A predetermined number of holes 113 are bored on the surface of the thin wall 112 facing the thin wall portion 5, and coolant is supplied through a pressure feed pipe 21 connecting the cooling jacket 11 and a coolant tank (not shown). As shown in FIG. 3, the internal unit 0 and the second cooling means 11 are all arranged to protrude from the base 12 by approximately the same height.
次に本実施例の作用につき説明する。Next, the operation of this embodiment will be explained.
１０−
上記した高周波焼入袋＠７によりトリポードハウジング
部材１の内面を焼入れするに際しては、まず第３図に示
す如く、高周波焼入れ装置７を所定位置で固定しておい
て、その直上に配置されたトリポードハウジング部材１
を適宜昇降手段により下方に所定速度で連続して下降さ
せていく。10- When hardening the inner surface of the tripod housing member 1 using the above-mentioned induction hardening bag @7, first, as shown in FIG. 3, the induction hardening device 7 is fixed at a predetermined position, and the tripod housing member 1
is continuously lowered downward at a predetermined speed by appropriate lifting means.
しかして、トリポードハウジング部材１下端の開口部１
ａを高周波焼入装置７の高周波加熱コイル１５が通過し
て中空部、内に嵌入すると同時に、該コイル１５に高周
波大電流を流す０
コイル１５の上方への相対的移動につれて、該コイル１
５と対向するロール溝内周面２ａは、表面に誘導電流を
生じ、ジュール熱により瞬時に加熱される。Therefore, the opening 1 at the lower end of the tripod housing member 1
The high-frequency heating coil 15 of the high-frequency hardening device 7 passes through a and is fitted into the hollow part, and at the same time, a large high-frequency current is passed through the coil 15.
The roll groove inner peripheral surface 2a facing the roll groove 5 generates an induced current on the surface and is instantaneously heated by Joule heat.
加熱された内周面２ａが所定の温度に達した段階でコイ
ル１５の下方に配設搭れた第１冷却ジヤケツト９から上
記加熱面に向けて冷却液が噴射され、該加熱面を急速に
冷却して、ロール溝２の内周面２ａ全面に焼入層■を得
る。When the heated inner circumferential surface 2a reaches a predetermined temperature, a cooling liquid is injected from the first cooling jacket 9 disposed below the coil 15 toward the heated surface, rapidly heating the heated surface. By cooling, a hardened layer (2) is obtained on the entire inner circumferential surface 2a of the roll groove 2.
但し、薄肉部５の部分では、コイル】５はその内周面５
ａと若干距離があり、かつ該薄肉部５の外周面５ｂには
、第２冷却ジヤケツト１１から冷却液が上記加熱に若干
先行して、もしくは該加熱と並行して噴射されているの
で、ローラ溝内周面２ａのうち上記ローラ滑動面１８は
どには上記内周面５ａが加熱されず、第１冷却ジヤケツ
ト９による焼入れ深さく１）も相対的に薄くなる。However, in the thin part 5, the coil]5 is
Since the cooling liquid is sprayed from the second cooling jacket 11 onto the outer circumferential surface 5b of the thin wall portion 5 slightly prior to or in parallel with the heating, the roller The inner circumferential surface 5a of the groove inner circumferential surface 2a is not heated at the roller sliding surface 18, and the hardening depth 1) by the first cooling jacket 9 is also relatively thin.
第５図に示すようにトリポードハウジング部材１が下降
して、該部材１の底面１ｂ近くまで焼入層■が形成され
ると、コイル１５への高周波電流の導通な断ち、しかる
後にトリポードハウジング部材１を上昇させればよい。As shown in FIG. 5, when the tripod housing member 1 is lowered and the hardened layer 1 is formed close to the bottom surface 1b of the member 1, the high frequency current to the coil 15 is cut off, and then the tripod housing member All you have to do is increase 1.
なお、−の被焼入体１の焼入れが完了すれば、次の被焼
入体１が移動してきて、焼入装置７の直上に配置されて
下降を開始するようにすれば、被焼入体１の連続焼入作
業が可能となる◇しかして本実施例に係る高周波焼入装
置７を用いることにより、第６図及び第７図に示すよう
にトリポードハウジング部材１のローラ溝２の内周面２
ａ全面にわたって連続した焼入層が形成できるため、従
来の焼入製品に発生する、焼入時における内周面２ａの
収縮変形が防止できる。In addition, when the hardening of the object 1 to be hardened (-) is completed, the next object 1 to be hardened moves, is placed directly above the hardening device 7, and starts descending. ◇By using the induction hardening device 7 according to this embodiment, the inner part of the roller groove 2 of the tripod housing member 1 can be continuously hardened as shown in FIGS. 6 and 7. Peripheral surface 2
Since a continuous hardened layer can be formed over the entire surface, shrinkage deformation of the inner circumferential surface 2a during hardening, which occurs in conventional hardened products, can be prevented.
よって、後工程での修正作業が不要となり・生産性が高
まる。Therefore, correction work in post-processing becomes unnecessary and productivity increases.
また、焼入れされていない部分との境界面に応力が集中
して疲労強度が低下し、ヒビ割れ等が発生するといった
従来の問題も・焼入層が連続して形成されるため確実に
防止できる０なお・本実施例においては被焼入体が昇降
し・高周波焼入袋Ｎ７が固定されている例を示したが、
その逆の構成でもよく、また両者とも同時に移動しうる
ものであってもよく、要は相対的な移動による連続した
焼入れが可能であればよ℃）。In addition, conventional problems such as stress concentration at the interface with unhardened parts, resulting in reduced fatigue strength and the occurrence of cracks, etc., can be reliably prevented because the hardened layer is formed continuously. Note: In this example, an example was shown in which the object to be hardened moves up and down and the induction hardening bag N7 is fixed.
The opposite configuration may be used, or both may be movable at the same time, as long as continuous hardening is possible through relative movement (°C).
また、加熱手段８と第１冷却手段９とは・本実施例の如
く一体に形成するのが望ましいが、別体に配設したもの
であってもよい０
さらに本実施例では被焼入体としてトリポードハウジン
グ部材を例示したが、本発明に係る１３−
高周波焼入装置は、他の任意な、不等肉厚断面を有する
筒状体の内面焼入れに適用しうるものである。Furthermore, although it is desirable that the heating means 8 and the first cooling means 9 be formed integrally as in this embodiment, they may be arranged separately. Although the tripod housing member is illustrated as an example, the induction hardening apparatus according to the present invention can be applied to the internal hardening of any other cylindrical body having an uneven wall thickness cross section.
また１本実施例の被焼入体の如く有底筒状体に限らず、
無底の筒状体にも適用しうる。In addition, it is not limited to a cylindrical body with a bottom like the body to be hardened in this embodiment.
It can also be applied to bottomless cylindrical bodies.
上述した如く構成された本発明にあっては、不等肉厚部
を有する筒状の被焼入体の内周面全面を本発明に係る高
周波焼入装置で加熱、冷却することができるから、該内
周面全面にわたって焼入層を形成しうる。In the present invention configured as described above, the entire inner circumferential surface of the cylindrical object to be hardened having uneven thickness portions can be heated and cooled by the induction hardening apparatus according to the present invention. , a hardened layer can be formed over the entire inner peripheral surface.
よって、焼入時における内周面の収縮変形が未然に防止
可能であり、該収縮変形の修正作業も必要としない０ま
た、非焼入部分との境界面が存在しないから、疲労強度
が向上し、クラック等の発生を確実に排除しうる有用な
ものである０Therefore, shrinkage deformation of the inner circumferential surface during quenching can be prevented, and there is no need to correct the shrinkage deformation.Furthermore, since there is no interface with the non-quenched part, fatigue strength is improved. 0, which is useful and can reliably eliminate the occurrence of cracks, etc.
第１図は従来の高周波加熱コイルを不等肉厚部を有する
被焼入体内面に適用した概念図、第１４−
２図は第１図のＡ−Ａ線断面図である。
第３図乃至第７図は本発明の一実施例を示し、第３図は
トリポードハウジング部材と本発明に係る高周波焼入装
置の焼入前の配置態様を示す要部斜視図、第４図は第３
図を下方より見た要部斜視図、第５図は焼入時の態様を
示す要部縦断面図、第６図及び第７図は各々第５図のＢ
−Ｂｌｓ断面図及びＣ−Ｃ線断面図である。
１・・・・・・トリポードハウジング部材、２・・・・
・・ローラ溝・ ２ａ・・・・・・ローラ溝内周
面、５・・・・・・薄肉部、 ７・・・・・・高
周波焼入装置、８・・・・・・加熱手段、 ９・・
・・・・第１冷□却手段、１０・・・・・・内部ユニッ
ト、 １１・・・・・・第２冷却手段。
１５−
＜１
６」
第４図
１２
第５図FIG. 1 is a conceptual diagram in which a conventional high-frequency heating coil is applied to the inner surface of a workpiece having uneven wall thickness, and FIG. 14-2 is a sectional view taken along the line A--A in FIG. 1. 3 to 7 show one embodiment of the present invention, FIG. 3 is a perspective view of essential parts showing the arrangement of the tripod housing member and the induction hardening apparatus according to the present invention before hardening, and FIG. 4 is the third
Figure 5 is a perspective view of the main part when viewed from below, Figure 5 is a vertical sectional view of the main part showing the state during quenching, Figures 6 and 7 are B of Figure 5, respectively.
-Bls sectional view and CC line sectional view. 1...Tripod housing member, 2...
...Roller groove 2a...Roller groove inner peripheral surface, 5...Thin wall portion, 7...Induction hardening device, 8...Heating means, 9...
...First cooling means, 10... Internal unit, 11... Second cooling means. 15- <1 6'' Figure 4 12 Figure 5
Claims (5)
れる高周波焼入装置において、上記筒状体の内周面全面
と所定間隔をおいて対峙、配設しうる加熱手段、及び該
加熱手段による加熱直後に上記筒状体内周面全面を冷却
しうる第１冷却手段からなる内部ユニットと、上記筒状
体の薄肉部外周面と所定間隔をおいて対峙、配設され上
記薄肉部の外周面を冷却しうる第２冷却手段とから構成
され、上記筒状体の軸方向に沿って該筒状体との間で相
対的な移動を可能にしたことを特徴とする高周波焼入装
置〇(1) In an induction hardening device that is applied to the inner surface of a cylindrical object to be hardened that has uneven wall thickness, heating that can be arranged facing the entire inner peripheral surface of the cylindrical object at a predetermined interval. and an internal unit comprising a first cooling means capable of cooling the entire circumferential surface of the cylindrical body immediately after heating by the heating means, and facing and disposed at a predetermined interval from the outer circumferential surface of the thin wall portion of the cylindrical body. and a second cooling means capable of cooling the outer circumferential surface of the thin-walled part, and is capable of relative movement with the cylindrical body along the axial direction of the cylindrical body. Induction hardening equipment〇
イルの上記軸方向前後を覆い上記筒状体の内周面と対峙
する側面のみを開放する磁性体とからなる特許請求の範
囲第１項記載の高周波焼入装置。(2) The heating means comprises a high-frequency heating coil, and a magnetic body that covers the front and back of the coil in the axial direction and opens only the side surface facing the inner peripheral surface of the cylindrical body. The induction hardening device described.
けて冷却液を噴射しうる複数個のノズルを設けた冷却ジ
ャケットからなる特許請求の範囲第１項もしくは第２項
記載の高周波焼入装置０(3) The first cooling means comprises a cooling jacket provided with a plurality of nozzles capable of injecting a cooling liquid toward the circumferential surface of the cylindrical body. Quenching device 0
周面に冷却液を噴射しうる複数個のノズルを設けた冷却
ジャケットからなる特許請求の範囲第１項乃至第３項記
載の高周波焼入装置。(4) The second cooling means comprises a cooling jacket provided with a plurality of nozzles capable of injecting a cooling liquid onto the outer peripheral surface of the thin-walled portion of the cylindrical body. Induction hardening equipment.
ポードハウジング部材である特許請求の範囲第１項乃至
第４項記載の高周波焼入装置０(5) The induction hardening apparatus 0 according to claims 1 to 4, wherein the cylindrical body is a bottomed cylindrical tripod housing member having uneven wall thickness parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57078804A JPS58197219A (en) | 1982-05-11 | 1982-05-11 | High frequency hardening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57078804A JPS58197219A (en) | 1982-05-11 | 1982-05-11 | High frequency hardening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58197219A true JPS58197219A (en) | 1983-11-16 |
| JPS613375B2 JPS613375B2 (en) | 1986-01-31 |
Family
ID=13672034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57078804A Granted JPS58197219A (en) | 1982-05-11 | 1982-05-11 | High frequency hardening device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58197219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04105670U (en) * | 1991-02-21 | 1992-09-11 | イーグル工業株式会社 | mechanical seal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5222325A (en) * | 1975-08-12 | 1977-02-19 | Matsushita Electric Works Ltd | Method of laying roofing material |
| JPS5313163A (en) * | 1976-07-22 | 1978-02-06 | Tsubakimoto Chain Co | Functional circuit connector using mother board |
| JPS5468710A (en) * | 1977-11-11 | 1979-06-02 | Koshuha Netsuren Kk | High frequency quenching method and apparatus of peripheral inner surface of cylinder having closed end |
| JPS5613169U (en) * | 1979-07-06 | 1981-02-04 | ||
| JPS576531U (en) * | 1980-06-13 | 1982-01-13 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276539A (en) * | 1975-12-19 | 1977-06-28 | Isuzu Motors Ltd | Temperature regulating device for engine cooling water |
-
1982
- 1982-05-11 JP JP57078804A patent/JPS58197219A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5222325A (en) * | 1975-08-12 | 1977-02-19 | Matsushita Electric Works Ltd | Method of laying roofing material |
| JPS5313163A (en) * | 1976-07-22 | 1978-02-06 | Tsubakimoto Chain Co | Functional circuit connector using mother board |
| JPS5468710A (en) * | 1977-11-11 | 1979-06-02 | Koshuha Netsuren Kk | High frequency quenching method and apparatus of peripheral inner surface of cylinder having closed end |
| JPS5613169U (en) * | 1979-07-06 | 1981-02-04 | ||
| JPS576531U (en) * | 1980-06-13 | 1982-01-13 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04105670U (en) * | 1991-02-21 | 1992-09-11 | イーグル工業株式会社 | mechanical seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS613375B2 (en) | 1986-01-31 |
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