专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPH10296341A BENDING METHOD OF METALLIC DOUBLE TUBE 失效
公开(公告)号：JPH10296341A
公开(公告)日：1998-11-10
申请号：JP10743797
申请日：1997-04-24
申请人： TOYOTA MOTOR CORP
发明人： TAGUCHI HIDEO , MITSUHAYASHI MASAHIKO
IPC分类号： B21D19/08 , B21D9/00 , B21D9/18
摘要： PROBLEM TO BE SOLVED: To excellently bend a double tube of small diameter while an inner tube holder to regulate the bending displacement of the inner tube is dispensed with. SOLUTION: A local part of an inner circumference of an inner tube 1 is heated in the circumferential direction by a heating coil 6 for the inner tube, and the compressive load in the axial direction is given to the inner tube 1, and a heated part is locally swollen to form an annular inner tube projected part 1b in which a forward end outer circumferential surface is abutted on the inner circumferential surface of an outer tube 2. The outer circumferential surface of the outer tube 2 is restricted by an outer tube holder 9 at the position corresponding to the inner tube projected part 1b in the axial direction. An inner circumferential local part of the inner tube 1 and an outer-circumferential local part of the outer tube 2 are respectively heated by the heating coil 6 for the inner tube and a heating coil 7 for the outer tube in the circumferential direction at the position away from the inner tube projected part 1b and the outer tube holder 9 by the prescribed distance in the axial direction, and the inner tube 1 and the outer tube 2 are bent by applying the bending moment to the heated parts of the inner tube 1 and the outer tube 2 while the inner tube 1 and the outer tube 2 relatively moved in the axial direction to the outer tube holder 9.

12. 发明专利

JPH09234519A METALLIC TUBE WORKING METHOD 失效
公开(公告)号：JPH09234519A
公开(公告)日：1997-09-09
申请号：JP6717696
申请日：1996-02-28
申请人： SUZUKI MOTOR CO
发明人： YAMAUCHI TOSHIO
IPC分类号： F01N13/08 , B21D9/00 , B21D9/15 , B21D9/18 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To easily bend a metallic tube into the desired shape without changing its sectional shape. SOLUTION: A hollow metallic tube 1 and a seal member 2 to be arranged on the end part of the metallic tube 1 are provided, the heat-melting material 7 which is heated to be melted in advance is filled in the metallic tube 1, the heat-melting material 7 is hardened by cooling the metallic tube 1 at the temperature below the melting point of the heat-melting material 7, and then, the metallic tube 1 is bent while it is heated at the temperature close to the melting point of the heat-melting material 7, and the metallic tube 1 is re-heated to re-melt the heat-melting material 7 and discharge it.

13. 发明专利

JPH09234517A WORKING METHOD OF HOLLOW DOUBLE PIPE 失效
公开(公告)号：JPH09234517A
公开(公告)日：1997-09-09
申请号：JP6903596
申请日：1996-02-29
申请人： SUZUKI MOTOR CO
发明人： FUJITA NOBUHIRO
IPC分类号： B21D9/00 , B21D9/15 , B21D9/18
摘要： PROBLEM TO BE SOLVED: To easily bend a hollow double pipe the desired shape without changing its sectional shape. SOLUTION: A first pipe 3, a second pipe 5 to be arranged in the first pipe 3, a seal member 4 to be arranged at an end part of the pipes 3, 5, and a heat- melting material 7 to be filled in the pipes 3, 4 are provided. The heat-melting material 7 is obtained by mixing the petroleum wax with the ceramics powder, and is filled in a space between the pipes 3, 5 and the pipes are bent, and then, the pipes 3, 5 are re-heated to the temperature above the melting point of the heat-melting material 7, and the heat-melting material 7 is re-melted and discharged.

14. 发明专利

JPH06226359A METHOD FOR MACHINING METALLIC FINE TUBE 失效
公开(公告)号：JPH06226359A
公开(公告)日：1994-08-16
申请号：JP1859093
申请日：1993-02-05
申请人： TOSHIBA CORP
发明人： YONEKURA AKEMICHI , OKUMURA KATSUYA
IPC分类号： B21D9/15 , B21D9/18
摘要： PURPOSE:To provide a method for machining a metallic fine tube so that the reliability for the mixture of a dust or a metal impurity can be improved and the production cost can be controlled. CONSTITUTION:The internal part of a stainless fine tube 10 is filled with gaseous argon, the place to be bent of the fine tube 10 is heated to the state of a high temperature with an electric heaters 6-1 to 6-3 and 7, ad in this state, the fine tube is bent. In such constitution, the crack or the strain is hardly generated in a tube internal wall. Further, since gaseous argon is filled inside the tube, the generation of the corrosion like rust, etc., on the internal wall of tube due to heating the fine tube can be prevented, and the internal part of the fine tube can be also kept clean after bending. Therefore, even if the tube internal wall is not treated with an electrolytic polishing, the generation of the dust or the metallic impurity from the fine metal itself can be prevented, the reliability against the mixture of the dust or the impurity can be improved and the production cost can be also controlled.

15. 发明专利

JPH06218436A BENDING DEVICE FOR DOUBLE PIPE 失效
公开(公告)号：JPH06218436A
公开(公告)日：1994-08-09
申请号：JP1091193
申请日：1993-01-26
申请人： MAZDA MOTOR
发明人： SHINAGAWA HIROSHI
IPC分类号： B21D7/025 , B21D9/00 , B21D9/07 , B21D9/18
摘要： PURPOSE:To prevent an outer pipe from buckling and cracking by providing a support member to axially support one end of an inner pipe part on a draw/ bend die and pressing the other end of the inner pipe part through a pressing die. CONSTITUTION:The outer pipe 4b of the double pipe 4 is clamped by a clamp die 2 and the draw/bend die 1 and bent by rotating the bending die 1 in the direction of an arrow mark(chevron) as it is restrained by a pressure die 3. The front end of the inner pipe 4a is supported by a jig 13 and the rear end is supported by a pressing die 5 as it is acted by pressure and bent as a pressing vector is acted in the direction of an arrow (b). A suitable bending moment (a) is acted by the behavior of the jig 13 generated by rotation of the draw/bend die 1 on the inner pipe 4a and the inner pipe is pushed and bent smoothly. A core bar 7 into which a heater 8 is interpolated is inserted into the inner pipe 4a and the inner pipe is pressed and bent more smoothly by the thermal operation of the heater without being flattened.

16. 发明专利

JPH05287434A 失效
公开(公告)号：JPH05287434A
公开(公告)日：1993-11-02
申请号：JP8396392
申请日：1992-04-06
申请人： SANYO ELECTRIC CO
发明人： MAEDA ATSUSHI
IPC分类号： B21D9/18 , B22F1/00 , C21D8/10 , C21D9/08 , C22C22/00 , C22C30/00
摘要： PURPOSE:To produce a magnetic material increased in saturation magnetization, having high magnetic transformation temp., and excellent in oxidation resistance at a low cost by infiltrating elements, such as H, into the lattice of an intermetallic compound of NiAs type crystal structure consisting of specific percenges of Mn and Sn. CONSTITUTION:A gas of at least one element among H, B, C, N, and S is infiltrated at about 150 deg.C into the lattice of an intermetallic compound of NiAs type crystal structure having a composition represented by MnXSn100-X (where 45

17. 发明专利

JPS6155585B2 失效
公开(公告)号：JPS6155585B2
公开(公告)日：1986-11-28
申请号：JP10506283
申请日：1983-06-14
申请人： GEN ELECTRIC
发明人： FURETSUCHAA KARUBIN EDENSU
IPC分类号： B21C1/22 , B21D9/18 , C22F1/18 , G21C3/324

18. 实用新型

JPS6094325U 失效
公开(公告)号：JPS6094325U
公开(公告)日：1985-06-27
申请号：JP18484483
申请日：1983-11-30
IPC分类号： B21D7/16 , B21D9/18

19. 发明专利

JPS603932A PRODUCTION OF HEAT EXCHANGER 失效
公开(公告)号：JPS603932A
公开(公告)日：1985-01-10
申请号：JP11131483
申请日：1983-06-20
申请人： SANYO ELECTRIC CO
发明人： NISHIDA SUSUMU , FUCHIGAMI TADASHI , KIMURA SEIJI , KOBAYASHI AKIO
IPC分类号： B21D9/18 , B21D11/00 , B21D11/06 , B21D53/06 , F28F1/36
摘要： PURPOSE:To wind a spine fin tube to a desired spiral shape without deforming the same by curving the tube by bending a jig which has the diameter smaller than the inside diameter of the tube, is straight in the longitudinal direction and has a prescribed curved form and twist at the top end thereof. CONSTITUTION:A jig 9 which has the outside diameter d2 smaller suitably than the inside diameter d1 of a spine fin tube 6, extends approximately linearly in the longitudinal direction and has a curved form (a) corresponding to the turning diameter of a spiral at the extended top end 9a and the twist (b) corresponding to a pitch P is formed. A tube 6 is inserted into the jig 9 from the straight part thereof and a fixing jig 10 is stuck and fixed to the exposed part 9b of the jig 9. A feeder 11 is then glided toward an arrow along the jig 9 to extrude the tube 6. The tube 6 is bent in the turning direction by the form (a) and is bent in the pitch P direction by the twist (b), by which a spine fin 8 is shaped to the desired spiral form without deformation.

20. 实用新型

JPS55143912U 失效
公开(公告)号：JPS55143912U
公开(公告)日：1980-10-15
申请号：JP4182279
申请日：1979-03-30
IPC分类号： B21C37/28 , B21D7/08 , B21D7/16 , B21D9/00 , B21D9/18 , H05B6/36

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式