JPH05287364A - Apparatus for stripe-quenching cylindrical work - Google Patents
Apparatus for stripe-quenching cylindrical workInfo
- Publication number
- JPH05287364A JPH05287364A JP4112072A JP11207292A JPH05287364A JP H05287364 A JPH05287364 A JP H05287364A JP 4112072 A JP4112072 A JP 4112072A JP 11207292 A JP11207292 A JP 11207292A JP H05287364 A JPH05287364 A JP H05287364A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical work
- base
- work
- cylindrical
- end surface
- 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
-
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、筒状ワークの内面ある
いは外面の円周方向複数箇所をワーク全長にわたって筋
状に焼入する筒状ワークの筋焼き装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a streaking device for a cylindrical work which stirs a plurality of circumferential positions on the inner surface or outer surface of the cylindrical work over the entire length of the work in a streak fashion.
【０００２】[0002]
【従来の技術】筒状ワークの内面焼入では、通常はその
内面が全周にわたって焼入される。この全面焼入に対
し、ワーク内面の円周方向複数箇所を軸長方向へ筋状に
焼入するいわゆる筋焼きが用いられることもある。この
内面筋焼きは、全周焼入に比して歪みが少ないとされ、
また、焼入硬化部がワーク内面の円周方向に間歇的に存
在するため、その筒状ワークが軸受等として使用された
場合には、焼入硬化部に挟まれた内面が優先的に摩耗
し、この部分が油溜まりとして機能することから、潤滑
性が良いとも言われている。そして、この内面筋焼き
は、これまでは次のような方法で行われていた。2. Description of the Related Art In quenching the inner surface of a cylindrical work, the inner surface is generally hardened over the entire circumference. In contrast to this full-face quenching, so-called line quenching may be used in which a plurality of circumferential locations on the inner surface of the workpiece are line-wise quenched in the axial direction. It is said that this inner surface stiffening has less distortion than the full circumference quenching,
In addition, since the quench-hardened part exists intermittently in the circumferential direction of the inner surface of the work, when the tubular work is used as a bearing, etc., the inner surface sandwiched by the quench-hardened part is preferentially worn. However, since this part functions as an oil reservoir, it is said that the lubricity is good. And, this inner surface streaking has been performed by the following method until now.
【０００３】筒状ワーク内面の円周方向一部にライン状
の誘導コイルをワーク全長にわたって対向させる。誘導
コイルの一端部に設けた接触子をワーク一端面の円周方
向一部に接触させる。その接触位置に対応するワーク他
端面の円周方向一部に別の接触子を接触させる。この接
触子と誘導コイルの他端部との間に高周波電流を通じ
る。これにより、筒状ワークの円周方向一部に軸長方向
の高周波電流が流れると共に、その通電部に対向する誘
導コイルに流れる高周波電流により、通電部表層に誘導
電流が生じ、筒状ワーク内面の円周方向一部が、直接通
電加熱と高周波誘導加熱によりワーク全長にわたって加
熱される。加熱部の温度が焼入温度に達すると、誘導コ
イルからその加熱部に焼入液を吹き付ける。A linear induction coil is made to face a part of the inner surface of the cylindrical work in the circumferential direction over the entire length of the work. The contactor provided at one end of the induction coil is brought into contact with a part of the one end surface of the work in the circumferential direction. Another contact is brought into contact with a part of the other end surface of the work in the circumferential direction corresponding to the contact position. A high frequency current is passed between the contactor and the other end of the induction coil. As a result, a high-frequency current in the axial direction flows in a part of the cylindrical work in the circumferential direction, and an induction current is generated in the surface layer of the energized part due to the high-frequency current flowing in the induction coil facing the energized part. A part of the circumferential direction is heated over the entire length of the work by direct current heating and high frequency induction heating. When the temperature of the heating section reaches the quenching temperature, the quenching liquid is sprayed from the induction coil to the heating section.
【０００４】以上の操作を、筒状ワークを円周方向に所
定角づつ回転させなが繰り返すことにより、筒状ワーク
内面の円周方向複数箇所が筋焼きされる。By repeating the above operation while rotating the cylindrical work by a predetermined angle in the circumferential direction, a plurality of circumferential positions of the inner surface of the cylindrical work are scorched.
【０００５】[0005]
【発明が解決しようとする課題】このような内面筋焼き
では、筒状ワークを回転させながら何回も焼入操作を行
うので、通常の内面焼入に比して焼入時間が極端に長く
なり、このことが筋焼入のコストを高騰させる原因にな
っている。また、隣り合う焼入部に熱影響を及ぼし、先
に焼入された部分の硬度が低下するおそれもあった。同
様に、筒状ワークの外面を筋焼きする場合も焼入時間が
長く、通常の外面焼入に比してコスト高となり、硬度低
下のおそれもあった。In such internal surface quenching, since the quenching operation is performed many times while rotating the cylindrical work, the quenching time is extremely long as compared with the normal internal quenching. This causes the cost of muscle hardening to rise. Further, there is a risk that the adjacent quench-hardened parts are thermally affected and the hardness of the previously-quenched part is lowered. Similarly, when the outer surface of the cylindrical work is streak-hardened, the quenching time is long, the cost is higher than that of the normal outer surface quenching, and the hardness may be lowered.
【０００６】本発明はかかる事情に鑑みてなされたもの
であり、筒状ワーク周面の円周方向複数箇所を通常の全
面焼入よりもむしろ短い時間で効率良く均一な硬度に筋
焼きできる筒状ワークの筋焼き装置を提供することを目
的とする。The present invention has been made in view of the above circumstances, and a cylinder capable of efficiently stiffening a plurality of circumferential positions on a peripheral surface of a cylindrical work to a uniform hardness in a shorter time than in the case of normal full surface quenching. An object of the present invention is to provide a streak grilling device for a strip-shaped workpiece.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の筒状ワ
ークの筋焼き装置は、筒状ワーク内面の円周方向複数箇
所をワーク全長にわたって筋状に同時焼入する筒状ワー
クの筋焼き装置であって、焼入すべき筒状ワークを位置
決めして鉛直状に保持するベースと、該ベース上に円周
方向に間隔をあけて立設され、各外面が、ベース上の筒
状ワークの内面にワーク全長にわたって対向すると共
に、各下端部が外側へ突出して前記筒状ワークの下端面
に対する下部接触子を形成し、各内部に導入される焼入
液を噴出する多数の噴出孔が前記外面に設けられた複数
のライン状の誘導コイルと、複数の誘導コイルの上方に
設けられて、前記ベースに対して相対接離動をし、ベー
スに接近したときに前記誘導コイルの各上端面に電気的
に接続されるヘッドを具有すると共に、誘導コイルの各
上端面に対応する円周方向複数位置にあってベース上の
筒状ワークの上端面複数箇所にそれぞれ圧接される複数
の上部接触子を具有する圧下部材と、該圧下部材のヘッ
ドに一方の端子が接続され、他方の端子が前記複数の上
部接触子に接続された高周波トランスとを具備すること
を特徴としている。A streaking device for a cylindrical work according to claim 1 is a stirrup for a cylindrical work, in which a plurality of circumferential circumferential locations on the inner surface of the cylindrical work are simultaneously quenched into a streak shape over the entire length of the work. A baking device, which is a base for positioning and vertically holding a cylindrical work piece to be quenched, and is erected upright on the base with a space in the circumferential direction. Each outer surface has a cylindrical shape on the base. A large number of ejection holes that face the inner surface of the work over the entire length of the work, form lower contacts for the lower end of the cylindrical work by projecting outwardly, and eject the quenching liquid introduced into each interior. A plurality of linear induction coils provided on the outer surface, and a plurality of induction coils provided above the plurality of induction coils to move relative to and away from the base, and each of the induction coils when approaching the base. Head electrically connected to the top surface A pressing member having a plurality of upper contacts, which are provided at a plurality of positions in the circumferential direction corresponding to the respective upper end surfaces of the induction coil and are pressed into contact with a plurality of upper end surfaces of the cylindrical work on the base. The head of the pressing member is provided with a high frequency transformer having one terminal connected to the head and the other terminal connected to the plurality of upper contacts.
【０００８】請求項２に記載の筒状ワークの筋焼き装置
は、筒状ワーク外面の円周方向複数箇所をワーク全長に
わたって筋状に同時焼入する筒状ワークの筋焼き装置で
あって、焼入すべき筒状ワークを位置決めして鉛直状に
保持するベースと、該ベース上に円周方向に間隔をあけ
て立設され、各内面が、ベース上の筒状ワークの外面に
ワーク全長にわたって対向すると共に、各下端部が内側
へ突出して前記筒状ワークの下端面に対する下部接触子
を形成し、各内部に導入される焼入液を噴出する多数の
噴出孔が前記内面に設けられた複数のライン状の誘導コ
イルと、複数の誘導コイルの上方に設けられて、前記ベ
ースに対して相対接離動をし、ベースに接近したときに
前記誘導コイルの各上端面に電気的に接続されるヘッド
を具有すると共に、誘導コイルの各上端面に対応する円
周方向複数位置にあってベース上の筒状ワークの上端面
複数箇所にそれぞれ圧接される複数の上部接触子を具有
する圧下部材と、該圧下部材のヘッドに一方の端子が接
続され、他方の端子が前記複数の上部接触子に接続され
た高周波トランスとを具備することを特徴としている。According to a second aspect of the present invention, there is provided a tubular workpiece streaking apparatus for simultaneously quenching a plurality of circumferential locations on the outer surface of a tubular workpiece in a streak shape over the entire length of the workpiece. A base for positioning and vertically holding a cylindrical work to be quenched, and a circumferentially-spaced stand upright on the base, each inner surface of which is the entire length of the outer surface of the cylindrical work on the base. While facing each other, each lower end portion protrudes inward to form a lower contactor for the lower end surface of the cylindrical work, and a large number of ejection holes for ejecting the quenching liquid introduced into each inside are provided on the inner surface. A plurality of linear induction coils and a plurality of induction coils provided above the induction coils to move relative to and away from the base, and when the base is approached, each upper end surface of the induction coil is electrically connected. With a head to be connected A pressure reducing member having a plurality of upper contactors at a plurality of positions in the circumferential direction corresponding to the respective upper end faces of the induction coil and being in pressure contact with a plurality of upper end faces of the cylindrical work on the base, and a head of the pressure reducing member. And a high frequency transformer having one terminal connected to the other terminal and the other terminal connected to the plurality of upper contacts.
【０００９】[0009]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１は請求項１に記載の筒状ワークの筋焼き装置
の一例を示す縦断側面図、図２は図１のＡ−Ａ線矢視図
である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional side view showing an example of a cylindrical work-fabricating device according to claim 1, and FIG. 2 is a view taken along the line AA of FIG.
【００１０】図１に示された筒状ワークの筋焼き装置
は、円筒状の筒状ワークＷを位置決めして鉛直に保持す
る固定ベース１０と、固定ベース１０上に円周方向に等
間隔をあけて鉛直に立設された複数本のライン状の誘導
コイル２０と、固定ベース１０の上方に設けられた圧下
部材３０と、圧下部材３０を水平に突出した一対のリー
ド４１，４２によって支持する高周波トランス４０とを
具備している。高周波トランス４０は、圧下部材３０に
通電を行うと共に、鉛直方向に昇降しその昇降動作によ
って圧下部材３０を固定ベース１０に対して接離動させ
る。The tubular work streaking apparatus shown in FIG. 1 has a fixed base 10 for positioning and vertically holding a cylindrical cylindrical work W, and a fixed base 10 on the fixed base 10 at equal intervals in the circumferential direction. A plurality of line-shaped induction coils 20 which are vertically opened and vertically erected, a pressing member 30 provided above the fixed base 10, and the pressing member 30 are supported by a pair of horizontally projecting leads 41 and 42. And a high frequency transformer 40. The high-frequency transformer 40 energizes the pressing member 30 and moves up and down in the vertical direction to move the pressing member 30 toward and away from the fixed base 10 by the lifting operation.
【００１１】前記固定ベース１０は、円柱状のベース本
体１１と、その上面に固定された円盤状の絶縁体１２と
からなる。絶縁体１２の上面周縁部には、筒状ワークＷ
の下端部外面を保持して、絶縁体１２のセンター位置に
筒状ワークＷを位置決めする環状のワーク保持部１２ｂ
が設けられている。The fixed base 10 is composed of a cylindrical base body 11 and a disc-shaped insulator 12 fixed to the upper surface thereof. A cylindrical work W is provided on the peripheral edge of the upper surface of the insulator 12.
An annular work holding part 12b for holding the outer surface of the lower end of the cylindrical work W and positioning the cylindrical work W at the center position of the insulator 12.
Is provided.
【００１２】複数の誘導コイル２０は、いずれも上端部
および下端部が閉塞された導電性の角筒からなり、下端
部を除き、絶縁体１２上に位置決め保持された筒状ワー
クＷの内面に所定の間隔をもって外面が対向するように
なっている。誘導コイル２０の外面は、筒状ワークＷの
内面に向けてほぼＶ状に尖っており、その先端には、焼
入液を噴出するための多数の噴出孔２１が、誘導コイル
２０のほぼ全長にわたって設けられている。Each of the plurality of induction coils 20 is made of a conductive square tube whose upper end and lower end are closed, and except for the lower end, the induction coil 20 is provided on the inner surface of the cylindrical work W positioned and held on the insulator 12. The outer surfaces are opposed to each other with a predetermined space. The outer surface of the induction coil 20 is sharpened in a V shape toward the inner surface of the tubular work W, and a large number of ejection holes 21 for ejecting the quenching liquid are formed at the tip of the induction coil 20 over substantially the entire length of the induction coil 20. It is installed over.
【００１３】誘導コイル２０の下端部は、外側へ突出し
て下部接触子２２を形成している。下部接触子２２は、
絶縁体１２上に位置決め保持された筒状ワークＷの下端
面内周部に接触するようになっている。誘導コイル２０
の下端面には、焼入液の導入孔２３が設けられている。
導入孔２３は、絶縁体１２に設けた焼入液導入路１２ａ
に連通している。なお、誘導コイル２０の上端面には、
円形の導電板からなる連結板５０が、全ての誘導コイル
２０に跨がって接合されている。The lower end of the induction coil 20 projects outward to form a lower contact 22. The lower contact 22 is
The cylindrical work W positioned and held on the insulator 12 comes into contact with the inner peripheral portion of the lower end surface. Induction coil 20
A quenching liquid introducing hole 23 is provided on the lower end surface of the.
The introduction hole 23 is the quenching liquid introduction passage 12 a provided in the insulator 12.
Is in communication with. In addition, on the upper end surface of the induction coil 20,
A connecting plate 50 made of a circular conductive plate is joined across all the induction coils 20.
【００１４】圧下部材３０は、下方の固定ベース１０に
対して同心に設けられた環状の導電体３１を有する。導
電体３１は、高周波トランス４０の一方のリード４１に
連結され、且つ該リード４１によって片持ち支持されて
いる。導電体３１の下面には、複数の上部接触子３２が
円周方向に等間隔をあけてビス３３により取り付けられ
ている。複数の上部接触子３２は、複数の誘導コイル２
０の各下端部に設けた下部接触子２２にそれぞれ正対し
ており、高周波トランス４０が下降したときに、絶縁体
１２上に位置決め保持された筒状ワークＷの上端面内周
部に接触するようになっている。The pressing member 30 has an annular conductor 31 provided concentrically with the lower fixed base 10. The conductor 31 is connected to one of the leads 41 of the high frequency transformer 40 and is cantilevered by the lead 41. A plurality of upper contacts 32 are attached to the lower surface of the conductor 31 with screws 33 at equal intervals in the circumferential direction. The plurality of upper contactors 32 includes the plurality of induction coils 2
0, which are directly opposed to the lower contactors 22 provided at the lower end portions thereof, and contact the inner peripheral portion of the upper end surface of the cylindrical work W positioned and held on the insulator 12 when the high-frequency transformer 40 descends. It is like this.
【００１５】導電体３１の心孔には、導電体からなる円
柱状のヘッド３４が、筒状の絶縁体３５を介して嵌合さ
れている。ヘッド３４は、絶縁体１２上に位置決め保持
された筒状ワークＷの上端面内周部に上部接触子３２が
接触したときに、前記連結板５０の上面中央部に接触す
るようになっている。ヘッド３４には、高周波トランス
４０の他方のリード４２が接続されている。A cylindrical head 34 made of a conductor is fitted in the core hole of the conductor 31 via a cylindrical insulator 35. The head 34 comes into contact with the central portion of the upper surface of the connecting plate 50 when the upper contact 32 comes into contact with the inner peripheral portion of the upper end surface of the cylindrical work W positioned and held on the insulator 12. .. The other lead 42 of the high frequency transformer 40 is connected to the head 34.
【００１６】図１に示された筒状ワークの筋焼き装置を
使用して、筒状ワークＷの内面を筋焼きするには、ま
ず、圧下部材３０の下方に筒状ワークＷを嵌め得る空間
ができるまで高周波トランス４０を上昇させる。次い
で、複数の誘導コイル２０の外側に筒状ワークＷを通
す。固定ベース１０の絶縁体１２上に筒状ワークＷが位
置決め保持されると、高周波トランス４０を下降させ
る。In order to streak the inner surface of the tubular work W using the tubular work streaking apparatus shown in FIG. 1, first, a space where the tubular work W can be fitted under the pressing member 30. The high frequency transformer 40 is raised until it is possible. Then, the cylindrical work W is passed through the outside of the plurality of induction coils 20. When the cylindrical work W is positioned and held on the insulator 12 of the fixed base 10, the high frequency transformer 40 is lowered.
【００１７】高周波トランス４０の下降により、圧下部
材３０のヘッド３４の下面が連結板５０の上面中央部に
圧接されると共に、複数の上部接触子３２が筒状ワーク
Ｗの上端面内周部にに圧接される。また、これらの圧接
の反力により、筒状ワークＷの下端面内周部に複数の下
部接触子２２が圧接される。As the high frequency transformer 40 descends, the lower surface of the head 34 of the pressing member 30 is pressed against the central portion of the upper surface of the connecting plate 50, and a plurality of upper contacts 32 are provided on the inner peripheral portion of the upper end surface of the cylindrical work W. Is pressed against. Further, due to the reaction force of these pressure contacts, the lower contacts 22 are pressed against the inner peripheral portion of the lower end surface of the cylindrical work W.
【００１８】高周波トランス４０の下降が終わると、こ
れに高周波電流を通じる。これにより、複数の誘導コイ
ル２０に高周波電流が流れると共に、相対向する下部接
触子２２と上部接触子３２との間に筒状ワークＷを介し
て高周波電流が流れる。その結果、筒状ワークＷの内面
表層部の円周方向複数箇所に一斉に高周波電流が流れて
各部が同時に直接通電加熱される。また、各加熱部に誘
導コイル２０が対向しているので、誘導コイル２０を流
れる高周波電流により、各加熱部に誘導電流が生じ、各
加熱部が誘導加熱によっても加熱される。When the high-frequency transformer 40 has finished descending, a high-frequency current is passed through it. As a result, a high-frequency current flows through the plurality of induction coils 20, and a high-frequency current flows between the lower contact 22 and the upper contact 32 facing each other via the cylindrical work W. As a result, high-frequency currents simultaneously flow in a plurality of circumferential positions of the inner surface layer of the cylindrical work W, and each part is directly energized and heated simultaneously. Further, since the induction coil 20 faces each heating unit, the induction current is generated in each heating unit by the high-frequency current flowing through the induction coil 20, and each heating unit is also heated by the induction heating.
【００１９】このようにして、筒状ワークＷの内面表層
部の円周方向複数箇所がワーク全長にわたって所定の焼
入温度に加熱されると、高周波トランス４０への通電を
停止するとほぼ同時に、複数の誘導コイル２０内に一斉
に焼入液を導入する。これにより、複数の誘導コイル２
０の噴出孔２１から一斉に焼入液が噴出され、筒状ワー
クＷの内面表層部における複数の加熱部が同時に急冷さ
れて所定の焼入組織となる。かくして、筒状ワークＷの
内面筋焼きが、１回の通電通液操作で、また筒状ワーク
Ｗを回転させることなく行われる。In this way, when a plurality of circumferential circumferential portions of the inner surface layer of the cylindrical work W are heated to a predetermined quenching temperature over the entire length of the work, the power supply to the high-frequency transformer 40 is stopped at approximately the same time, and a plurality of work pieces are heated. The quenching liquid is simultaneously introduced into the induction coil 20. Thereby, the plurality of induction coils 2
The quenching liquid is simultaneously ejected from the ejection holes 21 of 0, and a plurality of heating portions in the inner surface layer of the cylindrical work W are rapidly cooled at the same time to form a predetermined quenching structure. In this way, the inner surface of the cylindrical work W is baked by one energization / passing operation and without rotating the cylindrical work W.
【００２０】筒状ワークＷの内面筋焼きが完了すると、
高周波トランス４０を上昇させ、筒状ワークＷを上方へ
取り出す。When the inner surface of the cylindrical work W is completely burned,
The high frequency transformer 40 is raised and the cylindrical work W is taken out upward.
【００２１】なお、上記実施例は、複数の誘導コイル２
０を鉛直方向に延びる直線としているが、これらは、螺
旋状に捩じったり、あるいは筒状ワークＷの内面に沿わ
せつつその中心軸に対して傾斜させた形状とすることも
できる。このような変形した誘導コイル２０を使用すれ
ば、螺旋状、あるいは筒状ワークＷの中心軸に対して傾
斜した線に沿って筒状ワークＷの内面を筋焼きすること
ができる。In the above embodiment, a plurality of induction coils 2 are used.
Although 0 is a straight line extending in the vertical direction, these may be twisted in a spiral shape, or may be shaped so as to be along the inner surface of the cylindrical work W and inclined with respect to the central axis thereof. By using such a deformed induction coil 20, the inner surface of the tubular work W can be streaked along a line that is spiral or that is inclined with respect to the central axis of the tubular work W.
【００２２】図３は請求項２に記載の筒状ワークの筋焼
き装置の一例を示す縦断側面図である。FIG. 3 is a vertical cross-sectional side view showing an example of a scouring device for a cylindrical work according to a second aspect.
【００２３】図３に示された筒状ワークＷの筋焼き装置
は、筒状ワークＷの外面を筋焼きする装置である。この
装置と図１に示した内面筋焼き装置は、部材形状および
配置位置が異なるだけで、構成部材は実質同一であり、
対応部材には同一番号を付してある。The streaking device for the cylindrical work W shown in FIG. 3 is a device for streaking the outer surface of the cylindrical work W. This device and the inner surface squeezing device shown in FIG. 1 are substantially the same in structural members except for the member shape and the arrangement position.
Corresponding members are given the same numbers.
【００２４】簡単に説明すると、複数の誘導コイル２０
は、固定ベース１０上に位置決め保持された筒状ワーク
Ｗの外側に位置し、それぞれの下端部が内側へ突出して
下部接触子２２を形成している。複数の誘導コイル２０
の各内面には、多数の噴出孔２１が全長にわたって設け
られている。圧下部材３０は、円盤状の導電体３１の上
面に絶縁体３５を介して円盤状のヘッド３４が接合さ
れ、ヘッド３４の中心部にあけられた孔から導電体３１
の突起が上方へ突出した構造になっている。導電体３１
の下面外周部には、複数の上部接触子３２が取り付けら
れている。ヘッド３４の下面外周部は、複数の誘導コイ
ル２０へ向かって突出している。高周波トランス４０の
一方のリード４１は導電体３１の突起に接続され、他方
のリード４２はヘッド３４に接続されている。Briefly, a plurality of induction coils 20
Are located on the outer side of the cylindrical work W positioned and held on the fixed base 10, and the lower end portions of the respective pieces project inward to form the lower contact 22. Multiple induction coils 20
A large number of ejection holes 21 are provided over the entire length on each inner surface of the. In the pressing member 30, the disk-shaped head 34 is joined to the upper surface of the disk-shaped conductor 31 via the insulator 35, and the conductor 31 is inserted from the hole formed in the center of the head 34.
Has a structure in which the projection of is projected upward. Conductor 31
A plurality of upper contacts 32 are attached to the outer peripheral portion of the lower surface of the. The outer peripheral portion of the lower surface of the head 34 projects toward the plurality of induction coils 20. One lead 41 of the high frequency transformer 40 is connected to the protrusion of the conductor 31, and the other lead 42 is connected to the head 34.
【００２５】筒状ワークＷの外面筋焼きを行うには、ま
ず、高周波トランス４０を上げて固定ベース１０上に筒
状ワークＷをセットする。次いで、高周波トランス４０
を降下させる。そうすると、圧下部材３０が固定ベース
１０に接近して、ヘッド３４の各突出部下面が複数の誘
導コイル２０の各上端面に圧接される。これと同時に、
複数の上部接触子３２が筒状ワークＷの上端面外周部に
圧接され、その反力により筒状ワークＷの下端面外周部
に複数の下部接触子２２が圧接される。In order to perform the outer surface streaking of the cylindrical work W, first, the high frequency transformer 40 is raised and the cylindrical work W is set on the fixed base 10. Next, high frequency transformer 40
To descend. Then, the pressing member 30 approaches the fixed base 10, and the lower surfaces of the protrusions of the head 34 are pressed against the upper end surfaces of the plurality of induction coils 20. At the same time,
The plurality of upper contactors 32 are brought into pressure contact with the outer peripheral portion of the upper end surface of the tubular work W, and the plurality of lower contactors 22 are brought into pressure contact with the outer peripheral portion of the lower end surface of the tubular work W by the reaction force thereof.
【００２６】高周波トランス４０に高周波電流を通じる
と、複数の誘導コイル２０に高周波電流が流れると共
に、相対向する下部接触子２２と上部接触子３２との間
に筒状ワークＷを介して高周波電流が流れる。その結
果、筒状ワークＷの外面表層部の円周方向複数箇所に一
斉に高周波電流が流れて各部が同時に直接通電加熱され
ると共に、各誘導コイル２０を流れる高周波電流によ
り、各加熱部が誘導加熱によっても加熱される。When a high-frequency current is passed through the high-frequency transformer 40, the high-frequency current flows through the plurality of induction coils 20, and the high-frequency current is passed between the lower contact 22 and the upper contact 32 facing each other via the cylindrical work W. Flows. As a result, high-frequency currents simultaneously flow in a plurality of circumferential positions of the outer surface layer of the cylindrical work W, and each part is directly energized and heated. It is also heated by heating.
【００２７】このようにして、筒状ワークＷの外面表層
部の円周方向複数箇所がワーク全長にわたって所定の焼
入温度に加熱されると、高周波トランス４０への通電を
停止するとほぼ同時に、複数の誘導コイル２０内に一斉
に焼入液を導入する。これにより、複数の誘導コイル２
０の噴出孔２１から一斉に焼入液が噴出され、筒状ワー
クＷの外面表層部における複数の加熱部が同時に急冷さ
れて所定の焼入組織となる。かくして、筒状ワークＷの
外面筋焼きが、１回の通電通液操作で、また筒状ワーク
Ｗを回転させることなく行われる。In this way, when a plurality of circumferential positions of the outer surface layer of the cylindrical work W are heated to a predetermined quenching temperature over the entire length of the work, the power supply to the high-frequency transformer 40 is stopped at about the same time, and a plurality of the work is formed. The quenching liquid is simultaneously introduced into the induction coil 20. Thereby, the plurality of induction coils 2
The quenching liquid is simultaneously ejected from the ejection holes 21 of No. 0, and the plurality of heating portions in the outer surface layer of the cylindrical work W are rapidly cooled at the same time to form a predetermined quenching structure. In this way, the outer surface of the cylindrical work W is baked by one energization operation without rotating the cylindrical work W.
【００２８】外面筋焼きにおいても、複数の誘導コイル
２０を螺旋状に捩じったり、あるいは筒状ワークＷの外
面に沿わせつつその中心軸に対して傾斜させた形状とす
ることにより、筒状ワークＷの外面を螺旋状、あるいは
筒状ワークＷの中心軸に対して傾斜した線に沿って筋焼
きすることができる。Even in the case of the outer surface streaking, the plurality of induction coils 20 are twisted in a spiral shape, or the outer surface of the cylindrical work W is made to have a shape inclined with respect to the central axis thereof. The outer surface of the work W can be crease-shaped, or can be streaked along a line inclined with respect to the central axis of the cylindrical work W.
【００２９】なお、前述の実施例は、いずれも圧下部材
３０を昇降させる構成としているが、固定ベース１０の
側を昇降させることもでき、また、両方を昇降させるこ
とによっても圧下部材３０を固定ベース１０に接離させ
ることが可能である。更にまた、固定ベース１０上に位
置決め保持された筒状ワークＷの内側および外側に誘導
コイル２０が位置するようにすれば、筒状ワークＷの内
面および外面を１回の通電通液操作で、また筒状ワーク
Ｗを回転させることなく同時に筋焼きすることもでき
る。In each of the above-described embodiments, the pressure reducing member 30 is moved up and down. However, the side of the fixed base 10 can be moved up and down, and the pressure reducing member 30 is fixed by moving both up and down. It can be brought into and out of contact with the base 10. Furthermore, if the induction coil 20 is positioned inside and outside the cylindrical work W that is positioned and held on the fixed base 10, the inner surface and the outer surface of the cylindrical work W can be subjected to a single energization / liquid passage operation. In addition, the cylindrical work W can be simultaneously baked without rotating.
【００３０】[0030]
【発明の効果】以上、請求項１に記載の筒状ワークの筋
焼き装置による場合には、ベースの上方に設けた圧下部
材がベースに対して相対接離動をし、圧下部材と複数の
誘導コイルとの間に充分な空間を確保できるので、誘導
コイルの上方にからベース上に筒状ワークを簡単にセッ
トできる。ベース上に筒状ワークがセットされると、そ
の内面の円周方向複数箇所に誘導コイルがワーク全長に
わたって対向され、誘導コイルの下端部に設けた下部接
触子がワーク下端面の円周方向複数箇所に接触する。こ
の状態で、圧下部材をヘッドに接近させると、圧下部材
のヘッドが複数の誘導コイルの各上端面に電気的に接続
されると共に、複数の上部接触子が筒状ワークの、各誘
導コイルの上端面に対応する上端面複数箇所にそれぞれ
圧接される。そして、高周波トランスを作動させること
により、筒状ワークの円周方向複数箇所に高周波電流が
一斉に流れると共に、各通電部に対向する誘導コイルに
流れる高周波電流により通電部表層に誘導電流が生じ、
筒状ワーク内面の円周方向複数箇所が、直接通電加熱と
高周波誘導加熱によりワーク全長にわたって加熱され
る。加熱後、各加熱部に誘導コイルから焼入液を一斉に
吹き付けることにより、筒状ワーク内面の円周方向複数
箇所がワーク全長にわたって同時に筋状に焼入される。
従って、従来の筋焼きよりも焼入工程が少なく、また加
熱効率が良く、隣接する焼入部を軟化させる懸念もな
い。かくして、筒状ワーク内面の円周方向複数箇所が均
等な硬さに、短時間で低コストに焼入される。As described above, in the case of the apparatus for streaking a cylindrical work according to the first aspect of the present invention, the pressing member provided above the base relatively moves toward and away from the base, and the pressing member and a plurality of members are provided. Since a sufficient space can be secured between the induction coil and the induction coil, the cylindrical work can be easily set on the base from above the induction coil. When the cylindrical work is set on the base, the induction coil is opposed to the inner surface of the work at multiple points in the circumferential direction over the entire length of the work, and the lower contacts provided at the lower end of the induction coil are arranged in the circumferential direction of the work lower surface. Touch the spot. When the pressing member is brought closer to the head in this state, the head of the pressing member is electrically connected to each upper end surface of the plurality of induction coils, and the plurality of upper contacts are connected to the induction coil of the tubular work. The plurality of upper end surfaces corresponding to the upper end surface are pressed against each other. Then, by operating the high-frequency transformer, a high-frequency current simultaneously flows at a plurality of circumferential positions of the cylindrical work, and an induction current is generated in the surface layer of the energizing part by the high-frequency current flowing in the induction coil facing each energizing part.
A plurality of circumferential positions on the inner surface of the cylindrical work are heated over the entire length of the work by direct current heating and high frequency induction heating. After heating, the quenching liquid is simultaneously sprayed from the induction coils to the respective heating parts, so that a plurality of circumferential locations on the inner surface of the cylindrical work are simultaneously quenched in a streak shape over the entire length of the work.
Therefore, the number of quenching steps is smaller than that of the conventional streak quenching, the heating efficiency is good, and there is no fear of softening the adjacent quenching portion. Thus, a plurality of circumferential locations on the inner surface of the cylindrical work are uniformly hardened in a short time at low cost.
【００３１】同様に、請求項２に記載の筒状ワークの筋
焼き装置による場合には、筒状ワークの外面が、その円
周方向複数箇所において複数の誘導コイルによりワーク
全長にわたって筋状に同時焼入される。従って、焼入時
間が大幅に短縮され、焼入コストが大幅に安くなり、各
焼入部が均等な硬さとなる。また、圧下部材がベースに
対して相対接離動をするので、筒状ワークのセットが容
易となる。Similarly, in the case of the streaking device for a cylindrical work according to claim 2, the outer surface of the cylindrical work is simultaneously streaked over the entire length of the work by a plurality of induction coils at a plurality of circumferential positions. Quenched. Therefore, the quenching time is significantly reduced, the quenching cost is significantly reduced, and the hardness of each quenched portion is uniform. Further, since the pressing member moves relative to and moves away from the base, it becomes easy to set the cylindrical work.
【図１】請求項１に記載の筒状ワークの筋焼き装置の一
例を示す縦断側面図である。FIG. 1 is a vertical cross-sectional side view showing an example of a streaking device for a cylindrical work according to claim 1.
【図２】図１のＡ−Ａ線矢視図である。FIG. 2 is a view taken along the line AA of FIG.
【図３】請求項２に記載の筒状ワークの筋焼き装置の一
例を示す縦断側面図である。FIG. 3 is a vertical cross-sectional side view showing an example of a streaking device for a cylindrical work according to claim 2.
１０ 固定ベース ２０ 誘導コイル ２１ 噴出孔 ２２ 下部接触子 ３０ 圧下部材 ３２ 上部接触子 ３４ ヘッド ４０ 高周波トランス ４１，４２ リード 10 Fixed Base 20 Induction Coil 21 Jet Hole 22 Lower Contact 30 Lowering Member 32 Upper Contact 34 Head 40 High Frequency Transformer 41, 42 Lead
Claims (2)
ーク全長にわたって筋状に同時焼入する筒状ワークの筋
焼き装置であって、焼入すべき筒状ワークを位置決めし
て鉛直状に保持するベースと、該ベース上に円周方向に
間隔をあけて立設され、各外面が、ベース上の筒状ワー
クの内面にワーク全長にわたって対向すると共に、各下
端部が外側へ突出して前記筒状ワークの下端面に対する
下部接触子を形成し、各内部に導入される焼入液を噴出
する多数の噴出孔が前記外面に設けられた複数のライン
状の誘導コイルと、複数の誘導コイルの上方に設けられ
て、前記ベースに対して相対接離動をし、ベースに接近
したときに前記誘導コイルの各上端面に電気的に接続さ
れるヘッドを具有すると共に、誘導コイルの各上端面に
対応する円周方向複数位置にあってベース上の筒状ワー
クの上端面複数箇所にそれぞれ圧接される複数の上部接
触子を具有する圧下部材と、該圧下部材のヘッドに一方
の端子が接続され、他方の端子が前記複数の上部接触子
に接続された高周波トランスとを具備することを特徴と
する筒状ワークの筋焼き装置。1. A streaking device for a cylindrical work, which simultaneously quenches a plurality of circumferential positions on the inner surface of a cylindrical work in a streak shape over the entire length of the work, wherein the cylindrical work to be quenched is positioned in a vertical shape. And a base that is held on the base and is erected on the base with a space in the circumferential direction, each outer surface faces the inner surface of the cylindrical work on the base over the entire length of the work, and each lower end projects outward. A plurality of linear induction coils that form a lower contactor for the lower end surface of the cylindrical work and that have a large number of ejection holes for ejecting the quenching liquid introduced into each inside of the cylindrical work, and a plurality of induction coils. The head is provided above the coil, moves relative to and away from the base, and is electrically connected to each upper end surface of the induction coil when approaching the base. Circumferential duplication corresponding to the upper end surface A pressure reducing member having a plurality of upper contacts that are pressed against a plurality of upper end surfaces of the cylindrical work on the base at several positions, and one terminal is connected to the head of the pressure reducing member, and the other terminal is A cylindrical work-striking device, comprising: a high-frequency transformer connected to the plurality of upper contacts.
ーク全長にわたって筋状に同時焼入する筒状ワークの筋
焼き装置であって、焼入すべき筒状ワークを位置決めし
て鉛直状に保持するベースと、該ベース上に円周方向に
間隔をあけて立設され、各内面が、ベース上の筒状ワー
クの外面にワーク全長にわたって対向すると共に、各下
端部が内側へ突出して前記筒状ワークの下端面に対する
下部接触子を形成し、各内部に導入される焼入液を噴出
する多数の噴出孔が前記内面に設けられた複数のライン
状の誘導コイルと、複数の誘導コイルの上方に設けられ
て、前記ベースに対して相対接離動をし、ベースに接近
したときに前記誘導コイルの各上端面に電気的に接続さ
れるヘッドを具有すると共に、誘導コイルの各上端面に
対応する円周方向複数位置にあってベース上の筒状ワー
クの上端面複数箇所にそれぞれ圧接される複数の上部接
触子を具有する圧下部材と、該圧下部材のヘッドに一方
の端子が接続され、他方の端子が前記複数の上部接触子
に接続された高周波トランスとを具備することを特徴と
する筒状ワークの筋焼き装置。2. A cylindrical workpiece streaking apparatus for simultaneously quenching a plurality of circumferential locations on the outer surface of a cylindrical workpiece over the entire length of the workpiece in a streak shape, wherein the cylindrical workpiece to be quenched is positioned vertically. And a base that is held on the base and is erected on the base with a space in the circumferential direction, and each inner surface faces the outer surface of the cylindrical work on the base over the entire length of the work, and each lower end projects inward. A plurality of linear induction coils that form a lower contactor for the lower end surface of the cylindrical work, and have a plurality of ejection holes for ejecting the quenching liquid introduced into each of the inner surfaces, and a plurality of induction coils. The head is provided above the coil, moves relative to and away from the base, and is electrically connected to each upper end surface of the induction coil when approaching the base. Circumferential duplication corresponding to the upper end surface A pressure reducing member having a plurality of upper contacts that are pressed against a plurality of positions on the upper end surface of the cylindrical work on the base at several positions, and one terminal is connected to the head of the pressure reducing member, and the other terminal is A cylindrical work-striking device, comprising: a high-frequency transformer connected to the plurality of upper contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4112072A JP2592026B2 (en) | 1992-04-03 | 1992-04-03 | Brazing device for tubular workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4112072A JP2592026B2 (en) | 1992-04-03 | 1992-04-03 | Brazing device for tubular workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05287364A true JPH05287364A (en) | 1993-11-02 |
| JP2592026B2 JP2592026B2 (en) | 1997-03-19 |
Family
ID=14577373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4112072A Expired - Fee Related JP2592026B2 (en) | 1992-04-03 | 1992-04-03 | Brazing device for tubular workpieces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592026B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480286A (en) * | 2014-12-25 | 2015-04-01 | 马鞍山市天马冶金材料有限公司 | Quenching device and quenching method for roller sleeve |
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| JPS6414288A (en) * | 1979-05-07 | 1989-01-18 | Synthetic Saafueshiizu Inc | Adhesive consisting of licinorate/urethane/ polyol and chlorinated rubber |
| JPH0332515U (en) * | 1989-08-02 | 1991-03-29 |
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1992
- 1992-04-03 JP JP4112072A patent/JP2592026B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414288A (en) * | 1979-05-07 | 1989-01-18 | Synthetic Saafueshiizu Inc | Adhesive consisting of licinorate/urethane/ polyol and chlorinated rubber |
| JPS599124A (en) * | 1982-07-09 | 1984-01-18 | Denki Kogyo Kk | Simultaneous hardening method of rack bar for steering |
| JPH0332515U (en) * | 1989-08-02 | 1991-03-29 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480286A (en) * | 2014-12-25 | 2015-04-01 | 马鞍山市天马冶金材料有限公司 | Quenching device and quenching method for roller sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592026B2 (en) | 1997-03-19 |
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| LAPS | Cancellation because of no payment of annual fees |