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JP2004114055 |
To provide a method for bending a metallic tube by which the occurrence of wall-thickness loss and cracks in the outer peripheral part and wrinkles and deformation in the inner peripheral part is prevented and also re-cutting stage is no...
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JP2004106025 |
To provide a hydroforming tube stock which suppresses generation of buckling and cracks in the bend of a tube stock even if the radius of curvature of the bend is further reduced, and also to provide a method and device for forming this ...
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JP2004108015 |
To bend a reinforcement by one person up to 180°, to prevent the an edge-tool roller to prevent from dropping out and also from dropping out from a bending roller for the reinforcement.One end of a lower handle 2 is installed to a main ...
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JP2004098139 |
To provide a manufacturing apparatus and method which enables bending work without necessity of special equipment and also changing of a bend radius in the bending work for a tapered metal pipe and a metal pipe with a profiled cross sect...
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JP2004098137 |
To provide a knife bending mechanism which bends a long-sized sheet-like knife delivered in a longitudinal direction by pressing the knife by means of moving sections and which can remarkably bend the knife at a time and further which ha...
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JP2004098080 |
To eliminate bending defects by wrinkles of the inner tube at the time of bending a double-tube.An end section of the double-tube composed of an inner tube 2a and an outer tube 2b is pinched by a rotatable bender and a revolvable closed ...
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JP2004098119 |
To improve work efficiency in the bending operation of reinforcing bars by using a single hand-operated bender and bending reinforcing bars having different outer diameters.The engaging grooves 18 of engaging parts 17 which are joined by...
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JP3538538 |
To provide a bending device minimized by decreasing transverse breadth, with a smaller number of driving shafts and simple in construction. The device 1 for bending wire-like material has a machine bed 2 to support a bending head 50 and ...
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JP3536062 |
PURPOSE: To provide a composite tube working device which does not cause wrinkle to bent part, can reduce ellipticity, performing bending as well as end part working with one device and is easily portable. CONSTITUTION: A composite tube ...
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JP2004090033 |
To provide a working method for bending by press working of a square pipe and an eyeglass-shaped pipe consisting of a magnesium material.An apparatus used is composed of a male die 1 which is installed movably vertically by providing a m...
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JP2004090039 |
To perform bending work approximating a required curve shape by series of operations by also making partial bending of the bend forming part after that perform by using the same bending die from the minimum bend corner part in the bendin...
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JP3531392 |
To inexpensively provide an angle bar bending machine capable of precisely bending two kinds or more of angle bars with one male die without deformation and moreover to improve the operability of bending. In this machine, the chamfer 1a ...
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JP2004074221 |
To provide a bending method by which the occurrence of wrinkles can be suppressed even if it is performed in a small bending diameter.A stock 1 is pressed through a fixture 4 where an insertion hole 2 into which the stock 1 is introduced...
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JP3528492 |
To prevent generation of cracks in a flange part to be worked while suppressing the increase of the man-hour as extremely as possible, and to execute the bending of small radius of curvature. A manufacturing method of a cylindrical membe...
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JP3525667 |
To provide a structural material including a beam and a column for a building having a sectional H- or I-shape capable of precisely forming a bent structure with a desired angle. In a bent structure 1 for a structural material 2, the str...
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JP3525979 |
To produce an aluminum alloy extruded material capable of bending of ≤2 R/H (where R denotes the bend inside diameter and H denotes the height in the direction of the bend radius in the cross-section) and furthermore high in strength. ...
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JP3517935 |
PURPOSE: To execute bending without applying other force than a bending moment to a bending part of a work by moving both gripping mechanism in the normal direction from the center of a bending mechanism by a distance corresponding to a ...
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JP2004034079 |
To provide a method and device for manufacturing a heat exchanger which has a pipe structure in one continuous stroke style, with pipe joints minimized, and which has a great latitude of design while ensuring heat exchange performance.Th...
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JP3517086 |
To provide a method for manufacture an integrally formed elbow on the inside surface of which stainless steel is cladded by welding without generating crack, peeling, etc., in the stainless steel layer. After cladding by welding the stai...
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JP2004009125 |
To reduce the repairing cost when the prong part of a wiper is worn out and deleted by bending the pipe.The wiper is composed of a base 2 having a groove 5 whose cross section is semicircular for sliding with the surface of the bending p...
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JP3507369 |
To efficiently bend a various shape tapered tube to any shape without changing a roll guide means by using a roll guide having a recessed groove surely capable of being in touch with the outer diameter part of each position in the tapere...
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JP3506846 |
To further improve the working efficiency in pipe bending by detecting a terminal of a bobbin by a material end detecting means. Pipe bending processes, A, B are provided on an automatic pipe bending equipment of a frame 11. Bobbins 211,...
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JP3504288 |
PURPOSE: To provide the bending die which can execute easily bending even in the case of a work provided with a flange part raised comparatively high, and also, can execute bending with high accuracy irrespective of accuracy of a punch r...
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JP3498490 |
To improve workability and productivity in safety with a light burner of a worker and the obtain a high precise vent angle. A fixed die 72 and movable die 73 pinching the connecting end part 5 of the truss chord member 2 are provided in ...
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JP2003340527 |
To provide an extrusion and bending apparatus, which is provided with a fixed jig and with a movable jig arranged to the front of the fixed jig, which pushes and bends forward an aluminum or aluminum alloy extrusion material through the ...
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JP2003340526 |
To provide a manufacturing method for a curved composite material which can prevent surface roughness and ensure uniformity of inside and outside wall thickness. The manufacturing method for the curved composite material is employed to m...
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JP2003334617 |
To provide a pipe bending machine and a pipe bending method by which small radius bending process of pipes can be carried out without setting a push out space at a pipe end portion and yield rate can be improved.In the pipe bending machi...
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JP3494914 |
To provide a reinforcing bar bending method by which setting of two kinds of bending radiuses is easily changed, working precision is stabilized and repeating work is easily executed. In a reinforcing bar bending machine wherein a transp...
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JP3494886 |
To provide the machine capable of driving a barstock or pipes automatically and controllably without using an additional and a supplemental handling means, while having a few driving shafts. This general use machine for bending pieces an...
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JP2003326319 |
To provide a simulation method of a three-dimensional bending work by which the interference between a three-dimensional base stock and equipment and obstacles is checked by performing beforehand simulation without actually performing be...
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JP2003320419 |
To provide an apparatus for bending a pipe capable of improving the productivity.In the apparatus for bending a pipe, a bending means equipped with a bending roll 12, clamps 13a and 13b, and a pressure 14 is rotatably installed in a mach...
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JP2003320421 |
To prevent a metal wire material from being folded or broken after bending even when the metal wire material such as a steel pipe is bent at a small radius by the compressive bending.In a bending method, a metal wire material 1 is heated...
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JP2003320420 |
To prevent a curved inner peripheral wall from buckling by minimizing the curvature of a pipe bending part.A material thickness relief part 42 for relieving the curved inner peripheral wall in a curved part of a pipe 1 is provided in a g...
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JP2003311335 |
To provide a wire bender having a wire holding member in place of a conventional center chuck of a device to bend a wire from both ends in a three-dimensional manner with a wire clamping function and a clamping and turning function of tu...
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JP2003311336 |
To provide a pipe bending method for improving versatility of a design of a control by obtaining a large bending angle of a pipe, and improving the bending accuracy without causing wrinkles, dents or twists in the pipe, and to provide a ...
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JP2003305518 |
To provide a pipe bending processing unit in a pipe bending processing device which is compact and easy to control.The pipe bending unit 10 in the pipe bending processing device is equipped with a bending roll 11, a clamp 12 for fixing a...
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JP2003290838 |
To provide a drawing-bending method of a tubing by which bending of a small radius of the R/D of ≤1.5 is performed even when it is a base stock having small elongation by using an existing rotary drawing-bending apparatus.In a method f...
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JP2003290837 |
To provide a bending device in which bending work from a small size object to a large size object is enabled with one bending device.This bending device is composed of a tip shaft part 7 having different diameters for holding bending die...
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JP2003290839 |
To provide a drawing-bending method of a tubing by which working is performed without generating cracks and wrinkles when performing bending of the small radius the R/D of which is ≤1.5 of a thin wall tube the t/D of which is ≤4.0% b...
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JP2003290836 |
To provide a working instrument and a working method for bending a bar-like partition material at a prescribed angle.In this bending instrument for the bar-like partition material is composed of a frame which is integrally formed into a ...
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JP3479503 |
To provide a bending article capable of integrally manufacturing a bending article such as a bearing swivel plate at an inexpensive production cost. A thick steel stock 4 formed like a tubular L shape or a U shape passes through a center...
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JP2003277831 |
To provide a method of producing a high frequency bend steel pipe having strength in an APIX 80 class and excellent toughness over the whole length.The steel pipe having a composition, by mass, 0.04 to 0.10% C, 0.01 to 0.5% Si, 0.5 to 2....
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JP2003275822 |
To provide a bending method of a flanged sheet by which the sheet on which an L-shaped flange is formed along lateral edges is bendable so as to have a round shape in the lateral direction and also the angle between the main body of the ...
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JP2003275821 |
To provide a method for bending automatically and permanently by which very strict degree is guaranteed in the plastic deformation of a body by a high-speed automatic operation in spite of variable values which occur in microstructure, m...
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JP2003275823 |
To make a bend radius smaller by reducing compressive force generated on a work during bending work as compared with conventional devices.In a push-through bending device in which the bending work is performed by passing a pipe P through...
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JP2003266127 |
To provide a composite device for bending a pipe with which roll bending and drawing bending are performed without changing working reference with a single device.When performing the roll bending, a forming roll 11 is pressed against the...
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JP2003266128 |
To provide an electrically-driven bending tool to bend a bar such as a reinforcing bar with feeling skill close to that of a hand tool.An outer frame of a body comprises a housing 6 to accommodate a motor 1, a gear cover 4 to accommodate...
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JP2003260518 |
To provide a manufacturing device and a manufacturing method using the manufacturing device capable of simultaneously executing bending process and forming of a deformed metal tube without forming the deformed metal tube before the bendi...
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JP2003251414 |
To provide a pipe bender with which the end part of a pipe is energized by simple structure.When bending the pipe P, in such a case that the pipe P cannot be clamped with a chuck 23 by being brought into contact with a pressure block 5 o...
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JP2003245722 |
To provide a method and an apparatus capable of bending a hollow double pipe having a narrow space between inner and outer pipes and thin thickness for using an exhaust pipe of an internal combustion engine for automobile and the like.In...
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