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JPH11169957A |
To prevent the cross sectional deformation at the bent part by providing an inner surface supporting material for hollow material having good slidability and bending follow-up ability on the outer peripheral surface of a tube, introducin...
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JPH11159687A |
To provide a sealing structure easily sealing an opening part of a workpiece so as to prevent deformation due to use of a gas pressure in a workpiece bending process. This structure is provided with a first taper member 3 and a second ta...
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JP2898902B2 |
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JP2880320B2 |
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JP2863667B2 |
PURPOSE: To provide the bending method for a car body frame material of a two-wheeled vehicle, by which flapping generated at the time of bending a pipe-like frame stock is suppressed, and also, it is not feared that even if a cross sect...
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JPH1157871A |
To easily remove a core material by inserting the coil spring-like core material into the inside of the metallic pipe and bending the pipe in such a state. In bending processing, first a cylindrical coil spring-like core material 2 is in...
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JPH1110242A |
To continuously or variably execute forming of a bellows part with a prescribed pitch and a prescribed number of peak on a blank tube and forming of a straight tube part with a prescribed length. At the time of forming a bellows part on ...
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JPH10328745A |
To execute a high quality bending without developing buckling and strain on the surface plate of a metal-made hollow shape material, to enlarge bending range, to simply execute a partial bending and to reduce the working manhours by refr...
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JP2837154B1 |
[wrap up] [Task] To provide a method for producing a wear-resistant coated bend tube, which has good wear resistance and has good heat transfer characteristics even in a bend portion, and which has a small number of steps. A boiler tube ...
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JP2832437B2 |
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JP2832702B2 |
To manufacture a double tube having a prescribed curved shape without generating the deformation of a cross section and wrinkles on the inner tube comprising the double tube while maintaining a prescribed gap between the inner tube and t...
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JPH10314850A |
To correctly and smoothly bend a part to be worked of a work by providing on a common base the axial direction position control driving device of the position control rod of a mandrel and the axial direction moving device of a holding pa...
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JPH10314852A |
To firmly and surely hold the tail end of a hollow work without generating slip even in case of being applied with a large tensile force in the axial direction of the work when the tail end part of the hollow work is held with a hooking ...
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JPH10296356A |
To continuously, easily and temporarily connect a plurality of pipes in their axial direction. A rear end face 86 of a first pipe is pressed in the axial direction using rugged strap 2 to form a rugged surface 80. In temporarily connect ...
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JPH10296341A |
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. A local part of an inner circumference of an inner tube 1 is heated in the circumfer...
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JPH10277649A |
To improve the accuracy of the outward shape of a formed article by jointly using an elastic core made of rubber inside a stock tube to eliminate the bending buckling generated inside the bending during the bending forming when the hydra...
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JPH10277648A |
To improve the accuracy of bending a metallic pipe, and to improve the durability of a mandrel by constituting the mandrel for bending the metallic pipe by a resin mandrel part and a handle for drawing which is provided on its end part, ...
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JPH10510478A |
A tube bending machine is provided which includes a rotatable bend die about which the tube is bent, a mandrel insertable into the tube adjacent the bend, and a mandrel rod fixed to a rear end of the mandrel. A mandrel extractor system i...
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JPH10263712A |
To reduce a deviation from a desired dimension by inserting polymer mandrels from both sides of a hollow metal body and bending while stretching the hollow metal body from both ends in the longitudinal direction to prevent collapse of th...
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JPH10249444A |
To prevent the buckling caused on bending and to form in a well shape even in a different shaped cross-section bending tube by using a die of installing a projection part at an initial contact place to a tube as the raw material and loca...
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JPH10244321A |
To raise the strength of a tube and to show the feature on its design. In a tube 1, two pieces of cores 9 of facing toward the longitudinal direction are fitted by mutually separating on both side parts of the inside of an exterior tube ...
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JP2793519B2 |
PURPOSE: To provide a filling device of the filler for bending capable of improv ing the workability by forming a flexible lip on a sealing material, and bringing the lip into slidable contact with a circumferential wall part other than ...
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JP2794150B2 |
PURPOSE: To provide the injecting and discharging method for a packing material which reduces working space and has a high working efficiency. CONSTITUTION: An injecting and discharging furnace 2 is three-dimensionally constituted by pro...
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JP2794175B2 |
To provide an injecting and discharging device which moves a carriage effectively. The inside of an injecting and discharging furnace 2 is partitioned with a floor 7 of a discharging furnace 4 into a lower stage injection furnace 3 and t...
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JPH10192994A |
To obtain a flat uniform finishing face when being stuck with an outer sheath plate on the front face of a reinforcing plate without forming a step difference on the outer front face with the reinforcing plate caused by installing the st...
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JPH10192995A |
To prevent the generation of cross-section deforming or wrinkles, etc., and to execute bending in high precision and high productivity in the time of bending with pushing through a hollow shaped material of different cross-section. In be...
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JP2773066B2 |
PURPOSE: To easily operate the bending and to reduce the residual stress in the time of bending a double tube inserting an internal tube inside an external tube. CONSTITUTION: An internal tube 2 is inserted inside an external tube 1 and ...
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JP2576477Y2 |
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JPH10175026A |
To improve workability by restraining an uneven wall and ductile deterioration at the time of bending, in the case of putting a metal tube such as a steel tube or the like into segmental dies after bending and hydroforming into a prescri...
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JP2767387B2 |
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JPH10113730A |
To suppress severe thickness reduction which is generated on the outside of bending and to maintain the accuracy of wall-thickness of a tube by projcting a part to be the outside of bending larger than a part to be the inside at the time...
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JPH10109117A |
To execute three-dimensional bending taking hollow shapes having various cross-sectional shapes as an object and to make a small bend radius formable by preventing the generation of wrinkles and deformation in the cross-sectional shape i...
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JP2744423B2 |
To bend the angle steel to a prescribed shape and to provide it for a segment part of tunnel covering, etc. A forming roll 11 formed with a V shaped guide groove 11c on its peripheral face is mounted to a rotary shaft 21 of a bender. Als...
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JPH1094834A |
To simply bend a tube without crushing it. This core material 1 consisting of flexible synthetic resin such as polyolefine resin and nylon resin on which elastically deformable expansion parts 3 having dimensions larger than the inside d...
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JPH1094835A |
To bend the tube by a simple method without crushing a bending part. The core material 1 consisting of flexible synthetic resin such as polyolefine resin, nylon resin, etc., which has at least a pair of abutting parts 4 extending in the ...
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JPH1085844A |
To provide a metallic shape forming equipment capable of unnecessitating a shape cleaning work after working, and capable of performing not only a shape bending work but also a hydraulic forming work by using an elastic filling material ...
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JPH1085879A |
To perform the bending in which a fin is not deformed by abutting a bending die on an inner bending surface side of a fine-plate heat exchanger by interposing a buffer for stress dispersion, and bending a heat exchange pipe along the die...
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JP2731629B2 |
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JPH1034246A |
To prevent the generation of clearance caused on the releasing phenomenon between respective tube like stocks of the inside and the outside at the bending part by enlarging plural numbers of supplied tube like stocks and bending the tube...
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JP2701009B2 |
PURPOSE: To form a correcting device for a curved tube with a urethane bar, to correct the deformation of the cross section of the curved tube through the use of its bending performance and rigidity, and also to improve the connecting pe...
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JPH1015621A |
To provide a discharging device with which lubricating oil is not mixed in a filler at the time of discharging the filler. In this discharging device in which a core bar on which a lubricant is applied is inserted into the interior of th...
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JPH09323128A |
To prevent the occurrence of a wrinkle at the time of bending by swelling and deforming a rubber member by a deforming means after inserting a wrinkle preventing jig to the working point of the tube, and making the rubber member be in pr...
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JPH09267133A |
To provide the device for filling and discharging, by which the loss of heat energy can be suppressed and energy-saving can be obtained, further which is excellent in the heat insulation property of the filling material in a melting stat...
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JPH09253760A |
To reduce working cost by making a transmission device, which is successively arranged with a inclining device, a self running moving device in bending a member to be worked so as to reduce handing time and cost. By operating a chuck arm...
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JPH09253759A |
To shorten a whole length and to reduce an installation space by vertically arranging each device in the bending device. By operating a chuck arm 25 for opening/closing, the outer periphery of a work is held by a chuck claw 23. By runnin...
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JPH09239452A |
To execute radius bending to a construction structural member of U shaped grooved member in combination of a rugged roll forming machine and flat roll forming machine. The grooved member is subjected to plastic working in wavy shape by a...
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JPH09234517A |
To easily bend a hollow double pipe the desired shape without changing its sectional shape. 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- ...
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JPH09234519A |
To easily bend a metallic tube into the desired shape without changing its sectional shape. 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 whic...
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JP2649479B2 |
PURPOSE: To facilitate handling of a filling material to be used for preventing the tube from being crushed at the time of bending the tube. CONSTITUTION: As the filling material to be inserted into a tube, a shape memory resin which sho...
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JPH09225540A |
To efficiently execute three-dimensional bending to an extruded shape in the integrated state by executing bending of small radii of curvature by another bending after bending bent parts having a large radius of cuevature and twisted par...
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