JPH06142965A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JPH06142965A JPH06142965A JP4300868A JP30086892A JPH06142965A JP H06142965 A JPH06142965 A JP H06142965A JP 4300868 A JP4300868 A JP 4300868A JP 30086892 A JP30086892 A JP 30086892A JP H06142965 A JPH06142965 A JP H06142965A
- Authority
- JP
- Japan
- Prior art keywords
- laser light
- optical fiber
- main body
- pipe
- rotation
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、配管と分岐管との接続
部分に形成される張り出し部を配管の塑性変形によって
熱間加工する際の加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for hot working a projecting portion formed at a connecting portion between a pipe and a branch pipe by plastic deformation of the pipe.
【０００２】[0002]
【従来の技術】原子力プラントや火力プラント等の各種
プラントの配管には、途中に分岐管を接続したものが非
常に多い。このような分岐管を配管の途中に接続する場
合、従来では分岐管が接続される配管の接続部分の外観
を表す図４に示すように、図示しない分岐管が突き合わ
される配管１の接続部分には、管座となる張り出し部２
が形成され、この張り出し部２に対して分岐管の先端を
突き合わせ溶接することが、材料コストや製造コストの
点で普遍的に採用されている。2. Description of the Related Art Very many pipes of various plants such as a nuclear power plant and a thermal power plant are connected with a branch pipe in the middle thereof. When such a branch pipe is connected in the middle of the pipe, as shown in FIG. 4 which shows the appearance of the connection portion of the pipe to which the branch pipe is connected in the related art, as shown in FIG. The overhanging portion 2 that serves as a pipe seat.
Is formed, and it is universally adopted to butt-weld the tip of the branch pipe to the projecting portion 2 in terms of material cost and manufacturing cost.
【０００３】従来、このような配管１の張り出し部２の
加工方法として図５に示すように、予め配管１の所定箇
所に下穴３を穿設して引き棒４を差し込み、配管１の内
側からこの引き棒４の先端に円錐状のマンドレル５を一
体的に装着する。しかる後、図６に示すように下穴３の
周囲の配管１を拘束した状態でマンドレル５を引き棒４
と共に配管１の外側に引き抜き、下穴３の周囲を塑性変
形させてマンドレル５の外径に対応した張り出し部２を
成形するようにしている。As a conventional method for processing the overhanging portion 2 of the pipe 1, as shown in FIG. 5, a prepared hole 3 is preliminarily formed in a predetermined portion of the pipe 1 and a pull rod 4 is inserted thereinto, so that the inside of the pipe 1 is inserted. A conical mandrel 5 is integrally attached to the tip of the pull rod 4. Then, as shown in FIG. 6, the mandrel 5 is pulled by the rod 4 while the pipe 1 around the pilot hole 3 is restrained.
At the same time, the pipe 1 is pulled out to the outside, and the periphery of the prepared hole 3 is plastically deformed to form the projecting portion 2 corresponding to the outer diameter of the mandrel 5.
【０００４】この場合、配管１が薄肉の場合には冷間加
工となるが、厚肉の配管１に対しては熱間加工が一般的
であり、熱間加工によって張り出し部２を形成する場
合、この時の配管１に対する加熱状態を表す図７に示す
ように、ガスボンベ６に接続するガスバーナ７を用いて
下穴３の周囲を加熱したり、図８に示すように高周波電
源８に接続する高周波加熱コイル９を下穴３の周囲に配
設し、この下穴３の周囲を高周波誘導加熱している。In this case, cold working is performed when the pipe 1 is thin, but hot working is generally used for the thick pipe 1, and when the overhanging portion 2 is formed by hot working. As shown in FIG. 7, which shows the heating state of the pipe 1 at this time, a gas burner 7 connected to a gas cylinder 6 is used to heat the periphery of the prepared hole 3 or to connect a high frequency power source 8 as shown in FIG. A high frequency heating coil 9 is arranged around the pilot hole 3 and the circumference of the pilot hole 3 is subjected to high frequency induction heating.
【０００５】[0005]
【発明が解決しようとする課題】図７に示すガスバーナ
７にて厚肉の配管１の下穴３の周囲を加熱しつつ張り出
し部２を塑性加工する場合、配管１の昇温速度が早く、
作業効率の点で有利である反面、ガスバーナ７の先端と
配管１の外周面との距離を均一に保持することが困難で
ある。このため、マンドレル５によって最大の曲げ力が
負荷する部分を最適な加熱温度にまで加熱すると、ガス
バーナ７に対して最短距離にある下穴３の近傍が過熱状
態となる傾向を避けることができない。そして、下穴３
の周囲の配管１の表面が部分的に溶融状態となり、マン
ドレル５を引き抜く際の加工応力により微細な割れが発
生して品質の低下を招来する虞がある。When the protruding portion 2 is plastically worked while heating the periphery of the prepared hole 3 of the thick pipe 1 with the gas burner 7 shown in FIG. 7, the temperature rising rate of the pipe 1 is high,
While advantageous in terms of work efficiency, it is difficult to maintain a uniform distance between the tip of the gas burner 7 and the outer peripheral surface of the pipe 1. For this reason, if the portion on which the maximum bending force is applied is heated to the optimum heating temperature by the mandrel 5, it is unavoidable that the vicinity of the prepared hole 3, which is the shortest distance to the gas burner 7, becomes overheated. And the pilot hole 3
There is a risk that the surface of the pipe 1 around the part will be partially melted and fine cracks will occur due to the processing stress when the mandrel 5 is pulled out, leading to deterioration in quality.
【０００６】これに対し、図８に示す高周波加熱コイル
９を用いて厚肉の配管１の下穴３の周囲を誘導加熱しつ
つ張り出し部２を塑性加工する方法では、高周波加熱コ
イル９を配管１の外周面に沿って配設することができる
ため、上述したガスバーナ７の如き不具合を避けること
ができるものの、マンドレル５を用いた引き抜き加工を
成立させる必要上、高周波加熱コイル９を配管１の外周
に対して螺旋状に巻き付けることができない。このた
め、加熱効率の面で不利な渦巻き状の高周波加熱コイル
９を下穴３の周囲に配設するしかなく、作業効率の悪化
による製造コストの上昇を招く原因となっている。On the other hand, in the method of plastically processing the projecting portion 2 while induction heating the periphery of the prepared hole 3 of the thick pipe 1 by using the high frequency heating coil 9 shown in FIG. Since it can be arranged along the outer peripheral surface of No. 1, it is possible to avoid the inconvenience of the gas burner 7 described above. It cannot be spirally wound around the outer circumference. For this reason, the spiral high-frequency heating coil 9, which is disadvantageous in terms of heating efficiency, has to be arranged around the prepared hole 3, which causes increase in manufacturing cost due to deterioration in working efficiency.
【０００７】[0007]
【発明の目的】本発明は、配管と分岐管との接続部分に
形成される張り出し部を配管の塑性変形によって熱間加
工する際に、マンドレルによって最大の曲げ力が負荷す
る部分のみを最適な加熱温度にまで迅速に加熱すること
ができる加熱装置を提供することを目的とする。It is an object of the present invention to optimize only the portion where the maximum bending force is applied by the mandrel when hot working the overhanging portion formed at the connecting portion between the pipe and the branch pipe by plastic deformation of the pipe. It is an object of the present invention to provide a heating device that can quickly heat to a heating temperature.
【０００８】[0008]
【課題を解決するための手段】第一番目の本発明による
加熱装置は、一端側がレーザ光源に接続し且つこのレー
ザ光源からのレーザ光を伝送するレーザ光伝送用光ファ
イバと、このレーザ光伝送用光ファイバの他端側に接続
して当該レーザ光伝送用光ファイバの他端側から出射す
るレーザ光を集光する集光光学系と、この集光光学系と
同軸状に正対し且つ外周面が円錐状の反射面として機能
する凸円錐鏡と、この凸円錐鏡にて反射された前記レー
ザ光を環状のレーザ光に折り曲げて加熱部分に照射する
内周面が円錐状の反射面として機能する凹円錐鏡とを具
えたものである。A heating device according to the first aspect of the present invention comprises a laser light transmission optical fiber having one end connected to a laser light source and transmitting laser light from the laser light source, and the laser light transmission. A condensing optical system which is connected to the other end of the optical fiber for optical transmission and condenses the laser light emitted from the other end of the optical fiber for transmitting laser light, and a concentric optical system that confronts the concentrating optical system and is coaxial with the outer periphery. A convex conical mirror whose surface functions as a conical reflecting surface, and an inner peripheral surface that folds the laser light reflected by this convex conical mirror into an annular laser light and irradiates the heating portion as a conical reflecting surface. It has a functioning concave conical mirror.
【０００９】又、第二番目の本発明による加熱装置は、
一端側がレーザ光源に接続し且つこのレーザ光源からの
レーザ光を伝送するレーザ光伝送用光ファイバと、この
レーザ光伝送用光ファイバの他端側を保持する本体と、
この本体に対して前記レーザ光伝送用光ファイバの中心
と同軸に回転自在に取り付けられた回転筒と、この回転
筒と前記本体とに設けられて当該回転筒を駆動回転させ
る筒回転機構と、前記回転筒に取り付けられて前記レー
ザ光伝送用光ファイバの他端側から出射するレーザ光の
光路を曲げる楔状プリズムと、前記回転筒に取り付けら
れて前記レーザ光伝送用光ファイバの他端側から出射す
るレーザ光を集光して加熱部分に照射する集光光学系と
を具えたものである。The heating device according to the second aspect of the present invention is
A laser light transmission optical fiber having one end connected to a laser light source and transmitting laser light from the laser light source; and a main body holding the other end of the laser light transmission optical fiber,
A rotary cylinder that is rotatably attached to the main body coaxially with the center of the optical fiber for transmitting laser light, and a rotary cylinder mechanism that is provided on the rotary cylinder and the main body to drive and rotate the rotary cylinder. A wedge-shaped prism attached to the rotary cylinder to bend the optical path of the laser light emitted from the other end side of the laser light transmission optical fiber, and from the other end side of the laser light transmission optical fiber attached to the rotary cylinder. A condensing optical system that condenses the emitted laser light and irradiates the heated portion.
【００１０】更に、第三番目の本発明による加熱装置
は、一端側がレーザ光源に接続し且つこのレーザ光源か
らのレーザ光を伝送するレーザ光伝送用光ファイバと、
このレーザ光伝送用光ファイバの他端側を保持する本体
と、この本体に対して前記レーザ光伝送用光ファイバの
中心と同軸に回転自在に取り付けられた回転筒と、この
回転筒と前記本体とに設けられて当該回転筒を駆動回転
させる筒回転機構と、前記回転筒に取り付けられて前記
レーザ光伝送用光ファイバの他端側から出射するレーザ
光の光路を前記回転筒の回転中心と交差する方向に導く
導波管と、この導波管の先端に取り付けられて当該導波
管内を伝送する前記レーザ光を集光して加熱部分に照射
する集光光学系とを具えたものである。Furthermore, the heating device according to the third aspect of the present invention comprises an optical fiber for transmitting laser light, one end of which is connected to the laser light source and which transmits the laser light from the laser light source.
A main body that holds the other end of the laser light transmission optical fiber, a rotary cylinder that is rotatably attached to the main body coaxially with the center of the laser light transmission optical fiber, the rotary cylinder and the main body. And a tube rotation mechanism for driving and rotating the rotary tube, and an optical path of a laser beam attached to the rotary tube and emitted from the other end side of the optical fiber for transmitting laser light as a rotation center of the rotary tube. A waveguide provided in a crossing direction, and a condensing optical system attached to the tip of the waveguide to condense the laser light transmitted through the waveguide and irradiate the heated portion. is there.
【００１１】[0011]
【作用】第一番目の発明では、レーザ光源からのレーザ
光がレーザ光伝送用光ファイバの一端面からその内部を
伝送して他端面に到達し、このレーザ光伝送用光ファイ
バの他端面から拡散状態で出射するレーザ光が集光光学
系によって集束状態の光束に変換される。そして、凸円
錐鏡により集光光学系の光軸を基準として放射状に光路
が折り曲げられた後、凹円錐鏡により環状のレーザ光と
なって加熱部分に環状に照射される。According to the first aspect of the invention, the laser light from the laser light source is transmitted from one end face of the laser light transmission optical fiber to reach the other end face thereof, and from the other end face of the laser light transmission optical fiber. The laser light emitted in a diffused state is converted into a focused light flux by the focusing optical system. Then, after the convex conical mirror radially bends the optical path with the optical axis of the condensing optical system as a reference, the concave conical mirror turns the laser light into an annular laser beam and irradiates the heated portion in an annular shape.
【００１２】第二番目の発明では、レーザ光源からのレ
ーザ光がレーザ光伝送用光ファイバの一端面からその内
部を伝送して他端面に到達し、このレーザ光伝送用光フ
ァイバの他端面から拡散状態で出射するレーザ光が楔状
プリズムによって回転筒の回転軸心に対して交差する方
向に曲げられ、更に集光光学系によって集束状態の光束
に変換される。この状態にて筒回転機構を駆動すると、
本体に対して回転筒が回転してレーザ光が加熱部分を環
状に照射する。In the second invention, the laser light from the laser light source is transmitted from the one end surface of the laser light transmission optical fiber to the other end surface thereof, and reaches the other end surface thereof from the other end surface of the laser light transmission optical fiber. The laser light emitted in a diffused state is bent by the wedge prism in a direction intersecting with the rotation axis of the rotary cylinder, and is further converted into a focused light flux by the condensing optical system. When the cylinder rotation mechanism is driven in this state,
The rotary cylinder rotates with respect to the main body, and the laser light irradiates the heated portion in an annular shape.
【００１３】第三番目の発明では、レーザ光源からのレ
ーザ光がレーザ光伝送用光ファイバの一端面からその内
部を伝送して他端面に到達し、このレーザ光伝送用光フ
ァイバの他端面から拡散状態で出射するレーザ光が導波
管によって回転筒の回転軸心に対して交差する方向に導
かれ、更に集光光学系によって集束状態の光束に変換さ
れる。この状態にて筒回転機構を駆動すると、本体に対
して回転筒が導波管と共に回転してレーザ光が加熱部分
を環状に照射する。In the third invention, the laser light from the laser light source is transmitted from one end face of the laser light transmission optical fiber to reach the other end face thereof, and from the other end face of the laser light transmission optical fiber. The laser light emitted in a diffused state is guided by the waveguide in a direction intersecting the rotation axis of the rotary cylinder, and is further converted into a focused light flux by the condensing optical system. When the barrel rotating mechanism is driven in this state, the rotating barrel rotates together with the waveguide with respect to the main body, and the laser light irradiates the heated portion in an annular shape.
【００１４】[0014]
【実施例】本発明による加熱装置を図４に示す張り出し
部２が形成された配管１を熱間加工により製造する場合
に応用した一実施例の主要部の断面構造を表す図１に示
すように、先端側からねじ込まれる筒状のレンズ固定金
具１１を介して集光レンズ１２を中央部に保持する鏡筒
１３の基端部には、レーザ光伝送用光ファイバ１４の先
端部を保持するブラケット１５がねじ止めされている
が、集光レンズ１２の光軸とレーザ光伝送用光ファイバ
１４の先端部の中心軸とが一直線状をなすように、これ
ら集光レンズ１２及びレーザ伝送用光ファイバ１４の位
置関係が設定されている。又、レーザ光伝送用光ファイ
バ１４の基端部には、ＹＡＧレーザ発振器や二酸化炭素
ガスレーザ発振器等の図示しないレーザ光源が接続して
おり、これによってレーザ光伝送用光ファイバ１４の先
端から拡散状態で出射するレーザ光は、集光レンズ１２
により収束状態に変換される。EXAMPLE A heating apparatus according to the present invention is applied to a case where a pipe 1 having an overhanging portion 2 shown in FIG. 4 is manufactured by hot working. As shown in FIG. In addition, the distal end portion of the optical fiber 14 for transmitting laser light is held at the base end portion of the lens barrel 13 that holds the condenser lens 12 in the central portion via the tubular lens fixing fitting 11 that is screwed in from the tip end side. Although the bracket 15 is screwed, the condenser lens 12 and the laser transmission light are arranged so that the optical axis of the condenser lens 12 and the central axis of the tip of the laser light transmission optical fiber 14 are aligned. The positional relationship of the fiber 14 is set. Further, a laser light source (not shown) such as a YAG laser oscillator or a carbon dioxide gas laser oscillator is connected to the base end portion of the optical fiber 14 for transmitting laser light, which allows a diffusion state from the tip of the optical fiber 14 for transmitting laser light. The laser light emitted by the
Is converted to a converged state by.
【００１５】前記鏡筒１３の先端部には、円筒状をなす
鏡支持筒１６の基端部がねじ込まれており、この鏡支持
筒１６の先端には、当該鏡支持筒１６の先端外周にねじ
込まれる環状の石英板固定金具１７を介して図中、一点
鎖線にて示すレーザ光に対して損失の少ない石英板１８
が装着されている。又、この石英板１８の中央には、外
周面が円錐状の反射面となった凸円錐鏡１９が止めねじ
２０を介して固定されている。実施例における凸円錐鏡
１９の頂角は４５度のものを採用しているため、集光レ
ンズ１２からの光路は凸円錐鏡１９により集光レンズ１
２の光軸を基準として放射状に９０度折り曲げられるよ
うになっている。The base end of a cylindrical mirror-supporting cylinder 16 is screwed into the tip end of the lens-barrel 13, and the tip end of the mirror-supporting cylinder 16 is attached to the outer periphery of the tip-end of the mirror-supporting cylinder 16. A quartz plate 18 having a small loss with respect to a laser beam indicated by a chain line in the drawing through an annular quartz plate fixing member 17 to be screwed in.
Is installed. A convex conical mirror 19 whose outer peripheral surface is a conical reflecting surface is fixed to the center of the quartz plate 18 with a set screw 20. Since the apex angle of the convex conical mirror 19 in the embodiment is 45 degrees, the optical path from the condensing lens 12 is made by the convex conical mirror 19 to the condensing lens 1.
It can be bent 90 degrees radially with the optical axis of 2 as a reference.
【００１６】前記凸円錐鏡１９を囲むように鏡支持筒１
６の基端部に保持された環状の凹円錐鏡２１の内周面
は、凸円錐鏡１９の外周面と平行をなすように集光レン
ズ１２の光軸に対して４５度の傾きを持っており、これ
によって凸円錐鏡１５からの光路は集光レンズ１２の光
軸と平行な方向に折り曲げられ、この集光レンズ１２を
中心とする環状のレーザ光が石英板１８を透過して配管
１に形成された下穴３の周囲に照射される。The mirror support cylinder 1 surrounds the convex conical mirror 19.
The inner peripheral surface of the annular concave conical mirror 21 held at the base end of 6 has an inclination of 45 degrees with respect to the optical axis of the condenser lens 12 so as to be parallel to the outer peripheral surface of the convex conical mirror 19. As a result, the optical path from the convex conical mirror 15 is bent in a direction parallel to the optical axis of the condenser lens 12, and the annular laser light centered on the condenser lens 12 passes through the quartz plate 18 and the pipe. It is irradiated around the prepared hole 3 formed in 1.
【００１７】この環状をなすレーザ光の径は、凹円錐鏡
１７の内径を変えることによって任意に調節することが
可能であり、又、このレーザ光の幅は集光レンズ１２の
焦点距離や配管１の表面と石英板１４との間隔を調整す
ることによって自由に変えることができる。The diameter of this annular laser light can be arbitrarily adjusted by changing the inner diameter of the concave conical mirror 17, and the width of this laser light is the focal length of the condenser lens 12 or the piping. It can be freely changed by adjusting the distance between the surface of No. 1 and the quartz plate 14.
【００１８】なお、集光レンズ１２をコリメートレンズ
として機能させることも可能であり、この場合には配管
１に形成された下穴３の周囲に照射される環状のレーザ
光の幅を配管１の表面と石英板１４との間隔に関係なく
一定に保持することができる。又、本実施例では配管１
の表面の熱的なバランスを取るため、熱吸収材２２を必
要に応じて配管１の表面に塗布するようにしており、こ
れによって配管１に対する均一な加熱を実現することが
できる。It is also possible to make the condenser lens 12 function as a collimator lens. In this case, the width of the annular laser light radiated around the prepared hole 3 formed in the pipe 1 is set to the width of the pipe 1. It can be held constant regardless of the distance between the surface and the quartz plate 14. Further, in this embodiment, the pipe 1
In order to balance the heat of the surface of the pipe 1, the heat absorbing material 22 is applied to the surface of the pipe 1 as required, and thereby uniform heating of the pipe 1 can be realized.
【００１９】このようにして環状のレーザ光を配管１に
形成された下穴３の周囲に照射し、所定の温度まで加熱
昇温させた後、下穴３の部分からマンドレル５と共に引
き棒４を図中、上方へ引き上げることにより、所定の形
状の張り出し部２を形成することができる。In this way, the annular laser light is irradiated around the prepared hole 3 formed in the pipe 1 to heat and raise the temperature to a predetermined temperature, and then the mandrel 5 and the pull rod 4 from the prepared hole 3 portion. In the figure, the protruding portion 2 having a predetermined shape can be formed by pulling it upward.
【００２０】上述した実施例では、環状のレーザ光を配
管１の下穴３の周囲に照射するようにしているが、加熱
速度を向上させるためにレーザ光を環状に走査させ、こ
れによって配管１の下穴３の周囲を加熱することも可能
である。このような本発明による加熱装置を図４に示す
張り出し部２が形成された配管１を熱間加工により製造
する場合に応用した他の一実施例の主要部の断面構造を
表す図２に示すように、光ファイバ保持筒３１が貫通す
る本体３２の先端側には、一対の軸受３３を介して回転
筒３４が回転自在に保持されており、この回転筒３４の
先端部には先端側が屈曲した鏡筒３５の基端部が一体的
にねじ止めされている。In the above-described embodiment, the annular laser beam is applied to the periphery of the prepared hole 3 of the pipe 1. However, the laser beam is scanned in an annular form in order to improve the heating rate. It is also possible to heat the periphery of the prepared hole 3. FIG. 2 shows the cross-sectional structure of the main part of another embodiment in which such a heating device according to the present invention is applied to the case where the pipe 1 having the overhanging portion 2 shown in FIG. 4 is manufactured by hot working. As described above, the rotary cylinder 34 is rotatably held via the pair of bearings 33 on the distal end side of the main body 32 through which the optical fiber holding cylinder 31 penetrates, and the distal end portion of the rotary cylinder 34 is bent at the distal end side. The base end of the lens barrel 35 is integrally screwed.
【００２１】前記本体３２にブラケット３６を介して装
着された減速機３７には、駆動モータ３８が連結され、
この減速機３７の出力軸３９には、スラスト受け板４０
を一体に形成した駆動歯車４１が固定されている。この
駆動歯車４１と噛み合う従動歯車４２は、スラスト受け
板４０に対して摺接状態で回転筒３４の外周面に一体的
に嵌着されており、これにより駆動モータ３８の作動に
伴って回転筒３４が駆動回転するようになっている。A drive motor 38 is connected to a speed reducer 37 mounted on the main body 32 via a bracket 36.
The thrust receiving plate 40 is attached to the output shaft 39 of the speed reducer 37.
The drive gear 41 integrally formed with is fixed. The driven gear 42 that meshes with the drive gear 41 is integrally fitted to the outer peripheral surface of the rotary cylinder 34 in a slidable contact state with the thrust receiving plate 40, whereby the rotary cylinder is driven by the operation of the drive motor 38. 34 is driven and rotated.
【００２２】又、前記本体３２の基端部にねじ込まれる
保持筒固定金具４３を介して本体３２に固定される前記
光ファイバ保持筒３１には、レーザ光伝送用光ファイバ
４４の先端部が貫通状態で一体的に保持されており、こ
のレーザ光伝送用光ファイバ４４の基端部には、ＹＡＧ
レーザ発振器や二酸化炭素ガスレーザ発振器等の図示し
ないレーザ光源が接続している。Further, the front end of the optical fiber 44 for transmitting laser light penetrates the optical fiber holding cylinder 31 fixed to the main body 32 via a holding cylinder fixing metal fitting 43 screwed into the base end of the main body 32. The optical fiber 44 for laser light transmission is held integrally with the YAG at the base end.
A laser light source (not shown) such as a laser oscillator or a carbon dioxide gas laser oscillator is connected.
【００２３】前記鏡筒３５内には、レーザ光伝送用光フ
ァイバ４４の先端面と正対するコリメートレンズ４５
と、このコリメートレンズ４５によって平行光束に変換
されたレーザ光をコリメートレンズ４５の光軸に対して
折り曲げる楔状プリズム４６と、この楔状プリズム４６
によって折り曲げられたレーザ光を収束させる集光レン
ズ４７とがそれぞれスペーサ４８を介して収納され、鏡
筒３５の先端からねじ込まれる環状のレンズ固定金具４
９によって鏡筒３５内に固定された状態となっている。In the lens barrel 35, a collimating lens 45 that faces the front end surface of the optical fiber 44 for transmitting laser light.
And a wedge-shaped prism 46 that bends the laser light converted into a parallel light flux by the collimator lens 45 with respect to the optical axis of the collimator lens 45, and the wedge-shaped prism 46.
A condenser lens 47 for converging the laser beam bent by is housed via a spacer 48, respectively, and an annular lens fixing member 4 screwed from the tip of the lens barrel 35.
It is in a state of being fixed in the lens barrel 35 by 9.
【００２４】つまり、レーザ光伝送用光ファイバ４４の
先端から出射したレーザ光は、コリメートレンズ４５に
よって平行光束に変換され、更に楔状プリズム４６によ
り光路が鏡筒３５の先端側に沿って折り曲げられた後、
集光レンズ４７により収束状態となって配管１に形成さ
れた下穴３の側方に照射される。ここで、回転筒３４の
回転中心と配管１の下穴３の中心とを合致させ、この状
態で駆動モータ３８により回転筒３４を鏡筒３５と共に
駆動回転させることにより、レーザ光が下穴３の周囲を
環状に走査して所定の加工温度にまで迅速に昇温させる
ことができる。That is, the laser light emitted from the tip of the optical fiber 44 for transmitting laser light is converted into a parallel light flux by the collimator lens 45, and the optical path is bent by the wedge prism 46 along the tip side of the lens barrel 35. rear,
The light is converged by the condenser lens 47 and is irradiated to the side of the prepared hole 3 formed in the pipe 1. Here, the center of rotation of the rotary cylinder 34 and the center of the prepared hole 3 of the pipe 1 are made to coincide with each other, and in this state, the rotary cylinder 34 is driven and rotated by the drive motor 38 together with the lens barrel 35, whereby the laser light is generated. It is possible to scan the circumference of the ring in a ring shape and quickly raise the temperature to a predetermined processing temperature.
【００２５】このようにしてレーザ光を配管１に形成さ
れた下穴３の周囲に繰り返し照射し、所定の温度まで加
熱昇温させた後、下穴３の部分からマンドレル５と共に
引き棒４を図中、上方へ引き上げることにより、所定の
形状の張り出し部２を形成することができる。In this way, the laser beam is repeatedly irradiated around the prepared hole 3 formed in the pipe 1 to heat and raise the temperature to a predetermined temperature. Then, the mandrel 5 and the pull rod 4 are removed from the prepared hole 3. In the figure, the protruding portion 2 having a predetermined shape can be formed by pulling it upward.
【００２６】本実施例では、レーザ光伝送用光ファイバ
４４の先端と楔状プリズム４６との間にコリメートレン
ズ４５を配置したが、このコリメートレンズ４５を省略
して鏡筒３５の先端部に装着した集光レンズ４７を代わ
りに組み付けるようにしても良い。In this embodiment, the collimator lens 45 is arranged between the tip of the optical fiber 44 for transmitting laser light and the wedge prism 46. However, the collimator lens 45 is omitted and the collimator lens 45 is attached to the tip of the lens barrel 35. The condenser lens 47 may be assembled instead.
【００２７】なお、レーザ光の旋回半径は、楔状プリズ
ム４６の楔角を変えたり、配管１の表面と集光レンズ４
７との間隔を調整することによって自由に変えることが
できるが、楔角の異なる楔状プリズム４６を使用する場
合には、これに対応した折れ曲がり状態の鏡筒３５を用
いる必要がある。又、配管１の表面に照射されるレーザ
光の幅は、集光レンズ４７の焦点距離やこの集光レンズ
４７と配管１の表面との間隔を調整することによって自
由に変えることができる。For the turning radius of the laser beam, the wedge angle of the wedge prism 46 is changed, or the surface of the pipe 1 and the condenser lens 4 are changed.
It can be freely changed by adjusting the distance from the lens 7, but when the wedge prisms 46 having different wedge angles are used, it is necessary to use the bent lens barrel 35 corresponding thereto. Further, the width of the laser beam applied to the surface of the pipe 1 can be freely changed by adjusting the focal length of the condenser lens 47 and the distance between the condenser lens 47 and the surface of the pipe 1.
【００２８】上述した２つの実施例では分岐管の径が配
管１の径よりも小さい場合に特に有効であるが、分岐管
の径が配管１と同程度の場合等において好適な本発明の
別な実施例を図３に示す。即ち、光ファイバ保持筒５１
が貫通する本体５２の先端側には、一対の軸受５３を介
して回転筒５４が回転自在に保持されており、この回転
筒５４の先端部には導波管支持筒５５の基端部が一体的
にねじ止めされている。The two embodiments described above are particularly effective when the diameter of the branch pipe is smaller than the diameter of the pipe 1, but the present invention is suitable when the diameter of the branch pipe is about the same as that of the pipe 1. Another embodiment is shown in FIG. That is, the optical fiber holding cylinder 51
A rotary cylinder 54 is rotatably held on the front end side of the main body 52 through which the base member penetrates through a pair of bearings 53. The base end of the waveguide support cylinder 55 is attached to the front end of the rotary cylinder 54. It is screwed together.
【００２９】前記本体５２にブラケット５６を介して装
着された減速機５７には、駆動モータ５８が連結され、
この減速機５７の出力軸５９には、スラスト受け板６０
を一体に形成した駆動歯車６１が固定されている。この
駆動歯車６１と噛み合う従動歯車６２は、スラスト受け
板６０に対して摺接状態で回転筒５４の外周面に一体的
に嵌着されており、これにより駆動モータ５８の作動に
伴って回転筒５４が駆動回転するようになっている。A drive motor 58 is connected to a speed reducer 57 mounted on the main body 52 via a bracket 56.
The output shaft 59 of the reduction gear 57 has a thrust receiving plate 60.
The drive gear 61 integrally formed with is fixed. The driven gear 62 that meshes with the drive gear 61 is integrally fitted to the outer peripheral surface of the rotary cylinder 54 in a slidable contact state with the thrust receiving plate 60, whereby the rotary cylinder is driven by the operation of the drive motor 58. 54 is driven and rotated.
【００３０】又、前記本体５２の基端部にねじ込まれる
保持筒固定金具６３を介して本体５２に固定される前記
光ファイバ保持筒５１には、レーザ光伝送用光ファイバ
６４の先端部が貫通状態で一体的に保持されており、こ
のレーザ光伝送用光ファイバ６４の基端部には、ＹＡＧ
レーザ発振器や二酸化炭素ガスレーザ発振器等の図示し
ないレーザ光源が接続している。Further, the tip end of the optical fiber 64 for transmitting laser light penetrates the optical fiber holding cylinder 51 fixed to the main body 52 via a holding cylinder fixing metal fitting 63 screwed into the base end of the main body 52. The optical fiber 64 for laser light transmission is attached to the base end portion of the YAG.
A laser light source (not shown) such as a laser oscillator or a carbon dioxide gas laser oscillator is connected.
【００３１】前記導波管支持筒５５の先端部には、レー
ザ光伝送用光ファイバ６４の先端から拡散状態で出射す
るレーザ光を回転筒５４の回転中心に対して直角な方向
に導く導波管６５の基端部が固定されており、この導波
管６５の先端部には、当該導波管６５からのレーザ光を
集光状態で配管１の表面に照射するための集光レンズ６
６が導波管６５の先端部にねじ込まれる環状のレンズ固
定金具６７を介して固定されている。At the tip of the waveguide support tube 55, a waveguide for guiding laser light emitted from the tip of the optical fiber 64 for transmitting laser light in a diffused state in a direction perpendicular to the center of rotation of the rotary tube 54 is provided. The base end of the tube 65 is fixed, and the tip of the waveguide 65 has a condenser lens 6 for irradiating the surface of the pipe 1 with the laser light from the waveguide 65 in a condensed state.
6 is fixed via an annular lens fixing fitting 67 screwed into the tip of the waveguide 65.
【００３２】従って、レーザ光伝送用光ファイバ６４の
先端から出射したレーザ光は、導波管６５によって図３
中、横方向に導かれ、更に集光レンズ６６により収束状
態となって配管１に形成された下穴３の側方に照射され
る。ここで、回転筒５４の回転中心と配管１の下穴３の
中心とを合致させ、この状態で駆動モータ５８により回
転筒５４を導波管支持筒５５と共に駆動回転させること
により、レーザ光が下穴３の周囲を環状に走査して所定
の加工温度にまで迅速に昇温させることができる。Therefore, the laser light emitted from the tip of the optical fiber 64 for transmitting laser light is guided by the waveguide 65 as shown in FIG.
The light is guided in the inside and the lateral direction, and is converged by the condenser lens 66 to be irradiated to the side of the prepared hole 3 formed in the pipe 1. Here, the rotation center of the rotary cylinder 54 and the center of the prepared hole 3 of the pipe 1 are aligned, and in this state, the drive motor 58 drives and rotates the rotary cylinder 54 together with the waveguide support cylinder 55, whereby the laser light is emitted. The circumference of the prepared hole 3 can be scanned in an annular shape to quickly raise the temperature to a predetermined processing temperature.
【００３３】この場合、図示しない数値制御装置等を利
用し、回転筒５４の回転に同期して本体５２を図示しな
い旋回機構により配管１の外周面に沿って揺動させるこ
とにより、集光レンズ６６と配管１の外周面との間隔を
ほぼ一定に保持することができ、均一な加熱を行うこと
が可能となる。In this case, by using a numerical controller (not shown) or the like, the main body 52 is swung along the outer peripheral surface of the pipe 1 by a turning mechanism (not shown) in synchronism with the rotation of the rotary cylinder 54, so that the condensing lens The distance between 66 and the outer peripheral surface of the pipe 1 can be kept substantially constant, and uniform heating can be performed.
【００３４】なお、上述した三つの実施例は、すべて配
管１に形成される張り出し部２の熱間塑性加工を行う場
合について説明したが、これ以外の円周加熱を必要とす
る一般的な技術にも当然適用することができる。In the above-mentioned three embodiments, the case where the hot plastic working of the overhanging portion 2 formed on the pipe 1 is carried out has been described, but other general techniques that require circumferential heating. Of course, it can also be applied to.
【００３５】[0035]
【発明の効果】本発明の加熱装置によると、エネルギ密
度が高くしかも指向性が極めて高いレーザ光を熱源とし
て用いているため、操作性に優れたレーザ光源を用いる
ことと相俟って、作業効率や加熱品質の向上を図ること
ができる。According to the heating device of the present invention, since a laser beam having a high energy density and an extremely high directivity is used as a heat source, the operation is combined with the use of a laser light source having excellent operability. It is possible to improve efficiency and heating quality.
【００３６】現在、配管の張り出し部の熱間加工等に際
しては、ライン化による連続大量加工が試みられてお
り、従来にないインライン作業に有利な光ファイバを用
いて加熱部分とレーザ光源とを接続することができ、輻
射光や反射光と加熱温度との相関性を利用して光センサ
等により加熱温度の監視ができるため、加熱部分の表面
溶融を未然に防止することができる。At the present time, when hot working the overhanging portion of the pipe, continuous mass processing is attempted by making a line, and the heating part and the laser light source are connected using an optical fiber which is advantageous for in-line work, which has never been seen before. Since the heating temperature can be monitored by an optical sensor or the like by utilizing the correlation between the radiant light or the reflected light and the heating temperature, it is possible to prevent the surface of the heated portion from melting.
【図１】本発明による第一実施例にかかるレーザ加熱装
置の構成図である。FIG. 1 is a configuration diagram of a laser heating apparatus according to a first embodiment of the present invention.
【図２】本発明による第二実施例にかかるレーザ加熱装
置の構成図である。FIG. 2 is a configuration diagram of a laser heating apparatus according to a second embodiment of the present invention.
【図３】本発明による第三実施例にかかるレーザ加熱装
置の構成図である。FIG. 3 is a configuration diagram of a laser heating apparatus according to a third embodiment of the present invention.
【図４】本発明の対象となった張り出し部を有する配管
の斜視図である。FIG. 4 is a perspective view of a pipe having a projecting portion, which is a target of the present invention.
【図５】図６と共に本発明の対象となった張り出し部を
有する配管の製造手順を表す断面図である。FIG. 5 is a cross-sectional view showing a manufacturing procedure of a pipe having an overhanging portion which is an object of the present invention together with FIG.
【図６】図５と共に本発明の対象となった張り出し部を
有する配管の製造手順を表す断面図である。FIG. 6 is a cross-sectional view showing a manufacturing procedure of a pipe having an overhanging portion which is an object of the present invention together with FIG.
【図７】本発明の対象となった張り出し部を有する配管
を製造する際に用いられる従来の加熱装置の一例を表す
概念図である。FIG. 7 is a conceptual diagram showing an example of a conventional heating device used when manufacturing a pipe having an overhanging portion which is the subject of the present invention.
【図８】本発明の対象となった張り出し部を有する配管
を製造する際に用いられる従来の加熱装置の他の一例を
表す概念図である。FIG. 8 is a conceptual diagram showing another example of a conventional heating device used when manufacturing a pipe having an overhanging portion which is the subject of the present invention.
１は配管、２は張り出し部、３は下穴、４は引き棒、５
はマンドレル、１１,４９,６７はレンズ固定金具、１
２,４７,６６は集光レンズ、１３,３５は鏡筒、１４,４
４,６４はレーザ光伝送用光ファイバ、１５,３６,５６
はブラケット、１６は鏡支持筒、１７は石英板固定金
具、１８は石英板、１９は凸円錐鏡、２０は止めねじ、
２１は凹円錐鏡、２２は熱吸収材、３１,５１は光ファ
イバ保持筒、３２,５２は本体、３３,５３は軸受、３
４,５４は回転筒、３７,５７は減速機、３８,５８は駆
動モータ、３９,５９は出力軸、４０,６０はスラスト受
け板、４１,６１は駆動歯車、４２,６２は従動歯車、４
３,６３は保持筒固定金具、４５はコリメートレンズ、
４６は楔状プリズム、４８はスペーサ、５５は導波管支
持筒、６５は導波管である。1 is piping, 2 is overhanging part, 3 is prepared hole, 4 is pull bar, 5
Is a mandrel, 11, 49, 67 are lens fixing brackets, 1
2, 47, 66 are condenser lenses, 13, 35 are lens barrels, 14, 4
4, 64 are optical fibers for transmitting laser light, 15, 36, 56
Is a bracket, 16 is a mirror support tube, 17 is a quartz plate fixing bracket, 18 is a quartz plate, 19 is a convex conical mirror, 20 is a set screw,
21 is a concave conical mirror, 22 is a heat absorbing material, 31 and 51 are optical fiber holding cylinders, 32 and 52 are main bodies, 33 and 53 are bearings, 3
4, 54 are rotary cylinders, 37, 57 are speed reducers, 38, 58 are drive motors, 39, 59 are output shafts, 40, 60 are thrust receiving plates, 41, 61 are drive gears, 42, 62 are driven gears, Four
3, 63 is a holding tube fixing metal fitting, 45 is a collimating lens,
Reference numeral 46 is a wedge prism, 48 is a spacer, 55 is a waveguide support cylinder, and 65 is a waveguide.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２１Ｄ 19/08 Ｄ 9348−4Ｅ Ｂ２３Ｋ 26/00 Ａ 7425−4Ｅ 26/08 Ｋ 7425−4Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B21D 19/08 D 9348-4E B23K 26/00 A 7425-4E 26/08 K 7425-4E
Claims (3)
ーザ光源からのレーザ光を伝送するレーザ光伝送用光フ
ァイバと、このレーザ光伝送用光ファイバの他端側に接
続して当該レーザ光伝送用光ファイバの他端側から出射
するレーザ光を集光する集光光学系と、この集光光学系
と同軸状に正対し且つ外周面が円錐状の反射面として機
能する凸円錐鏡と、この凸円錐鏡にて反射された前記レ
ーザ光を環状のレーザ光に折り曲げて加熱部分に照射す
る内周面が円錐状の反射面として機能する凹円錐鏡とを
具えた加熱装置。1. A laser light transmission optical fiber having one end connected to a laser light source and transmitting laser light from the laser light source, and the other end of the laser light transmission optical fiber connected to the laser light transmission. A condensing optical system that condenses the laser light emitted from the other end side of the optical fiber for use, a convex conical mirror that faces the condensing optical system coaxially, and has an outer peripheral surface functioning as a conical reflecting surface, A heating device comprising: a concave conical mirror whose inner peripheral surface that folds the laser light reflected by the convex conical mirror into an annular laser light and irradiates the heating portion with the conical reflecting surface.
ーザ光源からのレーザ光を伝送するレーザ光伝送用光フ
ァイバと、このレーザ光伝送用光ファイバの他端側を保
持する本体と、この本体に対して前記レーザ光伝送用光
ファイバの中心と同軸に回転自在に取り付けられた回転
筒と、この回転筒と前記本体とに設けられて当該回転筒
を駆動回転させる筒回転機構と、前記回転筒に取り付け
られて前記レーザ光伝送用光ファイバの他端側から出射
するレーザ光の光路を曲げる楔状プリズムと、前記回転
筒に取り付けられて前記レーザ光伝送用光ファイバの他
端側から出射するレーザ光を集光して加熱部分に照射す
る集光光学系とを具えた加熱装置。2. A laser light transmission optical fiber having one end connected to a laser light source and transmitting laser light from the laser light source, a main body holding the other end of the laser light transmission optical fiber, and this main body. With respect to the laser light transmission optical fiber coaxially rotatably attached to the rotation cylinder, a rotation mechanism provided on the rotation cylinder and the main body for rotating the rotation cylinder, and the rotation. A wedge-shaped prism attached to the cylinder to bend the optical path of the laser light emitted from the other end of the laser light transmission optical fiber, and emitted from the other end of the laser light transmission optical fiber attached to the rotating cylinder. A heating device having a condensing optical system that condenses laser light and irradiates the heated portion.
ーザ光源からのレーザ光を伝送するレーザ光伝送用光フ
ァイバと、このレーザ光伝送用光ファイバの他端側を保
持する本体と、この本体に対して前記レーザ光伝送用光
ファイバの中心と同軸に回転自在に取り付けられた回転
筒と、この回転筒と前記本体とに設けられて当該回転筒
を駆動回転させる筒回転機構と、前記回転筒に取り付け
られて前記レーザ光伝送用光ファイバの他端側から出射
するレーザ光の光路を前記回転筒の回転中心と交差する
方向に導く導波管と、この導波管の先端に取り付けられ
て当該導波管内を伝送する前記レーザ光を集光して加熱
部分に照射する集光光学系とを具えた加熱装置。3. A laser light transmitting optical fiber having one end connected to a laser light source and transmitting laser light from the laser light source, a main body holding the other end of the laser light transmitting optical fiber, and this main body. With respect to the laser light transmission optical fiber coaxially rotatably attached to the rotation cylinder, a rotation mechanism provided on the rotation cylinder and the main body for rotating the rotation cylinder, and the rotation. A waveguide which is attached to the tube and guides the optical path of the laser light emitted from the other end side of the optical fiber for transmitting laser light in a direction intersecting the center of rotation of the rotating tube, and is attached to the tip of this waveguide. And a condensing optical system that condenses the laser light transmitted through the waveguide and irradiates the heated portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4300868A JPH06142965A (en) | 1992-11-11 | 1992-11-11 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4300868A JPH06142965A (en) | 1992-11-11 | 1992-11-11 | Heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06142965A true JPH06142965A (en) | 1994-05-24 |
Family
ID=17890080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4300868A Withdrawn JPH06142965A (en) | 1992-11-11 | 1992-11-11 | Heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06142965A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308986A (en) * | 2005-04-28 | 2006-11-09 | Canon Inc | Device for fixing optical element |
| JP2008052134A (en) * | 2006-08-25 | 2008-03-06 | Ricoh Opt Ind Co Ltd | Resin lens, lens unit, lens welding method, and lens securing method |
| KR20150098684A (en) * | 2013-01-11 | 2015-08-28 | 발리 게이밍, 인코포레이티드 | Bet sensors, gaming tables with one or more bet sensors, and related methods |
| CN109894503A (en) * | 2019-03-27 | 2019-06-18 | 南通益颖汽车装备有限公司 | A kind of automobile spare tire lid bound edge area heating installation |
| CN115156359A (en) * | 2022-07-21 | 2022-10-11 | 中国航发航空科技股份有限公司 | Be used for local heating forming device in aeroengine panel beating barrel radial hole |
-
1992
- 1992-11-11 JP JP4300868A patent/JPH06142965A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308986A (en) * | 2005-04-28 | 2006-11-09 | Canon Inc | Device for fixing optical element |
| JP2008052134A (en) * | 2006-08-25 | 2008-03-06 | Ricoh Opt Ind Co Ltd | Resin lens, lens unit, lens welding method, and lens securing method |
| KR20150098684A (en) * | 2013-01-11 | 2015-08-28 | 발리 게이밍, 인코포레이티드 | Bet sensors, gaming tables with one or more bet sensors, and related methods |
| US9478099B2 (en) | 2013-01-11 | 2016-10-25 | Bally Gaming, Inc. | Bet sensing apparatuses and methods |
| US9536379B2 (en) | 2013-01-11 | 2017-01-03 | Bally Gaming, Inc. | Bet sensors |
| US9940776B2 (en) | 2013-01-11 | 2018-04-10 | Bally Gaming, Inc. | Bet sensing apparatuses and related devices and methods |
| US10134223B2 (en) | 2013-01-11 | 2018-11-20 | Bally Gaming, Inc. | Bet sensing apparatuses and methods |
| US10290178B2 (en) | 2013-01-11 | 2019-05-14 | Bally Gaming, Inc. | Bet sensing apparatuses and related devices and methods |
| CN109894503A (en) * | 2019-03-27 | 2019-06-18 | 南通益颖汽车装备有限公司 | A kind of automobile spare tire lid bound edge area heating installation |
| CN115156359A (en) * | 2022-07-21 | 2022-10-11 | 中国航发航空科技股份有限公司 | Be used for local heating forming device in aeroengine panel beating barrel radial hole |
| CN115156359B (en) * | 2022-07-21 | 2023-09-15 | 中国航发航空科技股份有限公司 | Be used for local heating forming device of radial hole of aeroengine panel beating barrel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000201 |