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1. 发明专利

JPH0953121A HEAT TREATMENT OF LOCALLY THICKENED METALLIC BAR STOCK AND APPARATUS THEREFOR 失效
公开(公告)号：JPH0953121A
公开(公告)日：1997-02-25
申请号：JP22966795
申请日：1995-08-14
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： MATSUBARA YOICHI , WATANABE YASUO , FUKUDA AKIRA
IPC分类号： B21D3/00 , B21D3/14 , C21D9/00 , C21D9/08 , C21D9/52
摘要： PROBLEM TO BE SOLVED: To efficiently execute a heat treatment to a thickened part locally formed in a metallic bar stock and also, to correct the shape of the thickened part. SOLUTION: The thickened part 1A of the bar stock 1 to execute the heat treatment is locally heated with a heating means 4 to form a heated part 5, and the whole range of the thickened part 1A is heated by shifting the heated part 5 in the longitudinal direction to the thickened part 1A to execute the heat treatment. At the same time, an inner surface die 10 is inserted into the inside of the heated part 5 formed to the thickened part 1A and shifted together with the heated part 5 to form the inner surface of the thickened part 1A to a prescribed shape. Then, an undesirable deformation developed at the time of the thickening work is corrected and also, the inner surface is smoothened and further, the fear of deformation developed by the heat treatment is eliminated.

2. 发明专利

JPH0929378A METHOD AND EQUIPMENT FOR INCREASING WALL THICKNESS OF METAL BAR 失效
公开(公告)号：JPH0929378A
公开(公告)日：1997-02-04
申请号：JP20160495
申请日：1995-07-14
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： MATSUBARA YOICHI , WATANABE YASUO , FUKUDA AKIRA
IPC分类号： B21C37/04 , B21J5/08 , B21J9/08 , B21J9/20
摘要： PROBLEM TO BE SOLVED: To provide a method for increasing the wall thickness with excellent productivity in the desired range in the longitudinal direction of a bar. SOLUTION: In the condition in which the prescribed compressive force P is applied to a bar 1 to be increased in wall thickness by a compressing device 3, the bar is locally heated to form a plurality of heated parts 5a, 5b by a plurality of heating devices 4a, 4b arranged with intervals in the longitudinal direction of the bar 1, and the wall thickness is increased in parallel to a plurality of parts by moving a plurality of heated parts 5a, 5b in the longitudinal direction to the bar. In this case, the thickness of plural heating parts 5a, 5b are increased with constant increasing ratio respectively by heating so that respective mean deformation resistance becomes to the value corresponding to the desired thickness increasing value.

3. 发明专利

JPH0860747A THICKLY REINFORCED STEEL PIPE JOINT, STEEL PIPE PILLAR, AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0860747A
公开(公告)日：1996-03-05
申请号：JP33619794
申请日：1994-12-22
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： FUKUDA AKIRA , FURUUMI KENJI , NAKAAGE SUSUMU , WATANABE YASUO
IPC分类号： E04B1/24 , B21J5/08 , B21J9/08 , E04B1/58 , E04C3/32 , F16B35/04
摘要： PURPOSE: To simply and firmly connect opposite end sections of a pair of steel pipes with no welding. CONSTITUTION: Opposite end sections of a pair of steel pipes 11, 11 arranged in the nearly butted state are made thick sections 11a, 11a thickened with pipe walls by induction heating and compression respectively. Connecting materials 12 overlapped on the thick sections 11a, 11a of both steel pipes 11, 11 are provided, and the connecting materials 12 and thick sections 11a, 11a are fastened with bolts 13 inserted into holes 14, 15 formed on the connecting materials 12 and thick sections 11a, 11a. A one-side bolt is used for the bolt 13.

4. 发明专利

JPH0976011A METHOD FOR HEAT TREATMENT FOR THICKENING WORK OF METALLIC TUBE AND DEVICE THEREFOR 失效
公开(公告)号：JPH0976011A
公开(公告)日：1997-03-25
申请号：JP25729095
申请日：1995-09-11
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： WATANABE YASUO , NAGANO TOSHIO , MINAGAWA TSUGIO , FUKUDA AKIRA
IPC分类号： B21C37/16 , B21J1/06 , B21J5/08 , B21K21/16
摘要： PROBLEM TO BE SOLVED: To prevent deformation generated n the cross section of thick part formed at the time of executing local thickening work and heat treatment to a metallic tube such as a square tube. SOLUTION: By preliminarily setting a die 10 for heat treatment in the square tube 1 to be thickened, forming a heated part 5 by locally heating the square tube with a heating device 4 under the state where compressive force is added to the square tube 1 with a compressing device 3 and moving the heated part 5 in the longitudinal direction to the square tube, thick part 1A thickened is continuously formed, the heated part 26 for heat treatment is formed by heating the thick part 1A with an auxiliary heating device 9 and heat treatment of the whole thick part is executed by moving the heated part 26 for heat treatment in the longitudinal direction of the thick part. At the time of these thickening work and heat treatment, deformation on the verge of generating in the thick part 1A is prevented with the die 10 for heat treatment which is set inside the square tube 1 and the thick part 1A having a good cross-sectional shape is formed.

5. 发明专利

JPH0866736A METHOD FOR INCREASING LOCAL MASS OF METAL BAR 失效
公开(公告)号：JPH0866736A
公开(公告)日：1996-03-12
申请号：JP22880094
申请日：1994-08-30
申请人： DAI ICHI HIGH FREQUENCY CO LTD , DAIWA HOUSE IND
发明人： NAKAAGE SUSUMU , WATANABE YASUO , FUKUDA AKIRA
IPC分类号： B21J1/06 , B21C37/16 , B21J5/08
摘要： PURPOSE: To provide a mass increasing method which can increase a mass locally in a high mass increasing ratio and makes it into a shape without gener ating the stress concentration. CONSTITUTION: This method is that a small range in the longitudinal direction of a bar 1 is heated to the temperature being able to be deformed plastically, the heated part is compressed while the heated part is moved to the longitudinal direction against the bar, cooled, solidified and the mass is increased, in a beginning range of increasing the mass, the ratio V/W of the compression velocity V applying to the heated part and the relative moving velocity W of the heated part against the bar part in the rear side of the heated part is controlled so as to be increased gradually from a value T0 smaller than a value T1 at normal working times and reaches to the value T1 . Therefore, the mass is increased gradually, and the smooth inclining face is formed on the mass increase starting range 1A of the bar 1.

6. 发明专利

JPH08294701A THICKENING METHOD OF METAL BAR STOCK 失效
公开(公告)号：JPH08294701A
公开(公告)日：1996-11-12
申请号：JP12048795
申请日：1995-04-21
申请人： DAI ICHI HIGH FREQUENCY CO LTD , DAIWA HOUSE IND
发明人： MATSUBARA YOICHI , WATANABE YASUO , FUKUDA AKIRA
IPC分类号： B21J5/08 , B21B1/08 , B21B1/088
摘要： PURPOSE: To provide the thickening method which executes thickening to a desired region in the longitudinal direction of bar stock with exceeding a specific thickening rate. CONSTITUTION: In the thickening method, a heated part 5 is formed by locally heating a bar stock 1 to be thickened with a heating device 4, the heated part is thickened with imparting compression force while moving the heated part in the longitudinal direction over bar stock and the rear end of heated part 5 is cooled/solidified with a cooling medium 7, thickening is executed under the condition, in which the ratio (W/t) for a heating width W of heated part 5 in red hot state to a thickness before thickening is set to 6>=W/t>=1.05β+1.7 for a thickening rate β and a thickening rate β is >=0.5.

7. 发明专利

JPH0899143A METHOD AND APPARATUS FOR INCREASING THICKNESS OF METALLIC ROD METERIAL 失效
公开(公告)号：JPH0899143A
公开(公告)日：1996-04-16
申请号：JP29782794
申请日：1994-09-28
申请人： DAI ICHI HIGH FREQUENCY CO LTD , DAIWA HOUSE IND
发明人： MATSUBARA YOICHI , WATANABE YASUO , NAGANO TOSHIO , FUKUDA AKIRA
IPC分类号： B21D3/05 , B21C37/16 , B21J1/06 , B21J5/08
摘要： PURPOSE: To increase the thickness of a rod material without causing bending in the rod material. CONSTITUTION: In this method by which a heating part 5 is formed by locally heating the rod material 1 to be increased in the thickness by a heating device 4, the thickness is increased by giving the compressive force while moving the heating part in the direction longitudinal to the rod material and the rear end part of the heating part 5 is cooled and solidified with a cooling medium 6, the displacement in the direction perpendicular to the rod material axis O at the heating part 5 or the vicinity of the heating part is detected by displacing meters 16a, 16b. The displacement is reduced by applying the load in the direction reverse to this displacement of the rod material 1 by bending straightening means 18 having a pressurizing roll 19 and the thickness is increased while keeping the displacement of the heating part and the vicinity of thereof within a specific allowance.

8. 发明专利

JPH08120775A METAL STRIP MEMBER FOR THROUGH PILLAR 失效
公开(公告)号：JPH08120775A
公开(公告)日：1996-05-14
申请号：JP28399494
申请日：1994-10-25
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： FUKUDA AKIRA , WATANABE YASUO
IPC分类号： E04B1/24 , E04C3/32
摘要： PURPOSE: To join a beam without using a back patched metal fitting and a reinforcing member, permitting the use as a through pillar. CONSTITUTION: At the position forming a beam joint part when a strip member 1 is used as a passing pillar, a thick part 1A having fire larger thickness than other part is formed, and the position is provided with the necessary strength for the beam joint, and the beam can be joined without using a back patched metal fitting and a reinforcing member. Further, the slope psrts 1C and 1D having each inclination leading to a nonthicked part 1 are formed at both the ends of the thick part 1A, and the stress concentration is averted.

9. 发明专利

JPH07292771A COLUMN-BEAM CONNECTIVE STRUCTURE AND METHOD THEREFOR 失效
公开(公告)号：JPH07292771A
公开(公告)日：1995-11-07
申请号：JP33619694
申请日：1994-12-22
申请人： DAIWA HOUSE IND , DAI ICHI HIGH FREQUENCY CO LTD
发明人： FUKUDA AKIRA , NAKAAGE SUSUMU , WATANABE YASUO
IPC分类号： E04B1/24
摘要： PURPOSE:To perform joining between a column and a beam easily and firmly without installing any reinforcing member. CONSTITUTION:A wall thickness part 11a by means of induction heating and compression is installed in a part in the longitudinal direction of a steel pipe column 11, and an end part of a rolled steel beam 12 is bolted to this wall thickness part 11a of the column 11. This joining between the end part of the beam 12 and the wall thickness part 11a of the column 11 is carried out via a pair of split tees 13 bolted each to the wall thickness part 11a and vertical flanges 12a of the beam 12, but it may be done via an end plate of the beam. In addition, a one-side bolt may be used to a bolt 15 being inserted through the steel pipe column 11. In this connection, the joining of the end aprt of the beam 12 to the wall thickness part 11a of the column 11 may be done by means of welding as well.

10. 发明专利

JP2012000642A Apparatus and method for bending metallic tube 有权
标题翻译：用于弯曲金属管的装置和方法
公开(公告)号：JP2012000642A
公开(公告)日：2012-01-05
申请号：JP2010138132
申请日：2010-06-17
申请人： Dai Ichi High Frequency Co Ltd , 第一高周波工業株式会社
发明人： WATANABE YASUO
IPC分类号： B21D7/16
摘要： PROBLEM TO BE SOLVED: To stabilize a thickness increase ratio and a thickness reduction ratio of a metallic tube in compression bending of the tube by acting tensile force on the tube.SOLUTION: There is provide an apparatus 60 for bending a metallic tube in which the metallic tube 8 is moved by a straightly advancing mechanism 20 while being heated by an annular heating mechanism 11 and the metallic tube 8 is applied with compressive force (Pn) by being swiveled by a swiveling mechanism 30, and the metallic tube 8 is consequently bent, the compressive force (Pc) being applied to the metallic tube 8 by pulling both ends of the metallic tube 8 by a tensile force applying mechanism 50. The apparatus 60 for bending a metallic tube includes: a tensile force adjusting member 63 for variably adjusting the tensile force Pb of the tensile force giving mechanism 50; a thrust detecting member 62 for detecting the thrust Ps of the straightly advancing mechanism 20; and a control part 65 which calculates the tensile force Pb by subtracting the detected value Ps of the thrust from the target value PA of control corresponding to the total compressive force Pa of the ordinary compressive force Pn and an added compressive force Pc and which controls the tensile force adjusting member 63 on the basis of the calculated value of the tensile force Pb. A connection part 61 is formed in a tilting permissible form.
摘要翻译：要解决的问题：通过对管的作用张力来稳定管的压缩弯曲中的金属管的厚度增加率和厚度减小率。解决方案：提供一种用于弯曲金属管的装置60，其中金属管8由直线进给机构20移动，同时被环形加热机构11加热并且金属管8施加有压缩力（ Pn）通过旋转机构30旋转，金属管8因此弯曲，通过拉伸力施加机构50将金属管8的两端拉入金属管8的压缩力（Pc）。用于弯曲金属管的装置60包括：用于可变地调节张力施加机构50的张力Pb的拉力调节构件63; 用于检测直行进机构20的推力Ps的推力检测构件62; 以及控制部65，其通过从对应于通常压缩力Pn的总压缩力Pa的控制的目标值PA减去推力的检测值Ps和附加的压缩力Pc来计算拉伸力Pb，并且控制基于拉伸力Pb的计算值的拉力调节构件63。连接部61形成为倾斜允许形式。版权所有（C）2012，JPO＆INPIT

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