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JP3503381 |
To obtain higher rolling efficiency even when the number of universal rolling mills used is the same as that of a conventional universal mills and to reduce the number of passes in the universal rolling and the required time of rolling i...
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JP2003340521 |
To provide a structure capable of straightening a crankshaft not only in the vertical direction but in all directions at one time by a die clamping force of coining dies in the vertical direction. Positioning grooves 14, 15 are formed in...
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JP2003334614 |
To provide an apparatus that makes feasible for roll replacement for short time at low costs in a small space, and has a simple structure.In a roll replacement apparatus 10 of a cantilever type roll straightener 22 capable of lifting wit...
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JP2003334613 |
To provide a straightening apparatus which is suitable to easily straighten the deformation of the loose end (upper edge part) of a transporting truck panel.This apparatus is constituted of a bar-shaped main body 1, a screw jack 2 which ...
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JP3494532 |
To provide a manufacturing method of a rocker arm excellent in dimensional precision and forming a roller incorporating part at the end part. In the manufacturing method of the rocker arm 1 formed as fork-state at the one end part of the...
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JP2003320417 |
To provide an apparatus capable of easily and precisely correcting distortion after welding a header from which stress is not removed to a stub.In an apparatus for correcting distortion of a header structure, a header structure 1 is form...
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JP2003320416 |
To provide a two-roll type straightening method for rod steel improving not only exfoliation of a scale on the surface but unevenness on the surface at two-roll straightening, and reducing the flaw noise and enabling the precise detectio...
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JP3489308 |
To automatically correct the outline of an insert work and to supply it to the die by providing a plate that vertically corrects the lower projecting piece of a sheet-like insert work and a jig that horizontally corrects the horizontal p...
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JP2003311328 |
To provide a bend straightening device for straightening a bend efficiently at high accuracy by loading truly necessary straightening load by one pressurization when straightening the bend of a wire rod.This device is provided with a mea...
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JP2003305514 |
To provide a correcting device capable of achieving improvement in material quality for K zone as well as bilateral pressing across overall length of the correcting material to straighten even a longer shape steel, and a correcting metho...
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JP2003305513 |
To provide a method and a device for correcting a shape steel capable of effectively avoiding any problem of disturbance due to bending moment, needless to say material degradation in the vicinity of joint part (K zone) on the shape stee...
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JP2003305515 |
To provide a device capable of eliminating degradation in material quality for K zone of a shape steel as well as freely-adjusting a pass line while rolling.The correcting device for shape steel comprises a corrective roller 2 allowing p...
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JP2003290849 |
To provide a cold forming method for diameter reduction of a metallic pipe, a method that can be carried out in a smaller equipment and machine.The cold diameter reduction press forming method for a metallic pipe is characterized in that...
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JP2003290831 |
To provide the roller straightening method of a rail and a device therefor by which wavelike deformation generated when straightening the rail is suppressed the generation of flaws on a roller and the rail is restrained and the damage of...
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JP3480726 |
To reduce a working time and cost for straightening of a web angle, reducing a deviation of the web angle in a work to be straightened as far as possible, by installing at least two or more sets of rolls in parallel to web guide rolls wh...
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JP3478748 |
To obtain a bending method for a double tube capable of obtaining the double tube having no wrinkle in an inner tube. In an outer tube 2, an inner tube 4 having a smaller outer diameter than the inner diameter of the outer tube is insert...
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JP2003278968 |
To form the protrusion section of the spigot of a pipe efficiently in a mass production process.This device is provided with an elliptic opening corrective device 22 for correcting the elliptic opening produced at the spigot 2 of the pip...
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JP2003274615 |
To improve circularity and inner/outer diameter accuracy of a yoke by eliminating bending inclination defect of a steel plate which is rounded into a cylindrical shape.By the following steps, the motor yoke made of a steel which is shape...
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JP3474552 |
To prevent occurrence of a roll mark by applying a swing mechanism to right and left upper rolls, which can press a flange surface to be straightened while keeping rotating circumferential surfaces of the right and left upper rolls const...
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JP2003260514 |
To provide an automatic straightening method capable of straightening a bend of an electric resistance welded tube in the line based on the measurement data by automatically measuring the bending direction and bending degree of the elect...
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JP2003260516 |
To provide a method and device for manufacturing a shape capable of securely setting within permissible limits bending of the shape, camber of the shape, squareness of a flange and camber of the flange after cooling the shape to room tem...
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JP3471418 |
PURPOSE: To easily remove residual strain by energizing DC or AC in the direc tion nearly vertical to the actuating direction of a residual stress causing resid ual strain at the part where residual strain.is generated on a press-formed ...
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JP2003251412 |
To provide a method which can reliably correct the angle of a flange in a steel shape to a web over the total length of the steel shape.When correcting the angle of the flange to the web by passing the steel shape having the web (w) and ...
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JP2003236614 |
To provide a correcting device of a tubular body with which the cross-sectional shape of the tubular body is exactly measured and the tubular body is exactly corrected into a prescribed shape.A correcting means 22 with which external for...
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JP2003230927 |
To provide a manufacturing method for a rough shape material for a bearing ring which solves the problem of a long machining time required for a grinding process to remove the quenching strain of a ring material which is cold-rolled and ...
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JP2003230914 |
To provide a method and apparatus for straightening a bend of a section steel capable of straightening the bend with simplified equipment.A second clamp bar 22 is shifted to pinch the section steel 100 so that a force is applied, by maki...
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JP3461685 |
To obtain the residual stress controlled rail having few camber by making the upper roll diameter equivalent to the head part rolling side smaller than the lower roll diameter and making the circumferential speed of the roll in the side ...
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JP2003225709 |
To provide a method for straightly reforming high strength copper alloys in a satisfactory way, and easily obtaining high strength copper alloy rods having high straightness.High strength copper alloy rods 11 are filled into a reforming ...
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JP2003225734 |
To provide a unified molding method of aluminum alloy casing for a bus bar which is used for a G.I.S. (Gas Isolated Switchgear).A stage (a) where an aluminum alloy stock of a prescribed volume in accordance with the volume of a required ...
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JP2003220417 |
To provide a shaping jig and method for a pipe member capable of shaping the pipe member spirally wound to a desired form after bending it zigzag.By shaping the form of the pipe member W spirally wound after bending it zigzag, the zigzag...
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JP2003220416 |
To provide a method for manufacturing a deformation polygonal member such as a deformation quadrangular member or the like with less materials and at an inexpensive manufacturing cost.In the method for manufacturing the deformation polyg...
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JP2003220436 |
To provide a method for producing a holder for a rolling bearing unit by which the occurrence of creases of the holder is prevented and the holder can accurately be bent and formed, and also to provide a device for machining the holder.T...
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JP3456053 |
PURPOSE: To efficiently straighten the bending at high precision by subtracting the amount corresponding to the elastic deformation from the measured value by a total deformation detecting means, comparing the result with the initial end...
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JP2003211222 |
To enable the auxiliary-girder-attached main girder to be straightened in weld deformation using straightening rolls, to simply inversely alternate the mounting position of a driving and a driven straightening roll, which correct the wel...
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JP3453958 |
To reduce the number of processes and the period of production so as to make a T-steel efficiently by decreasing residual stress of an H-steel, applying web cutting or preliminary working to it, correcting its shape vertically and horizo...
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JP2003205314 |
To propose a method and a device for straightening a coiled pipe wound into a coil shape into beautiful appearance and with high accuracy.The diameter of the coiled pipe is slightly larger than the diameter of an objective straight pipe ...
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JP2003191053 |
To provide a method for blasting calibration of a chill mold including a tubular mold or a block mold in a relatively simple manner and at a relatively small cost.In a method for blasting calibration of the chill mold, a calibrating mand...
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JP2003191011 |
To manufacture a metallic tube 7 excellent in dimensional accuracy easily and at a low cost.This method has a U-bending stage E for forming a square metallic base stock 2 into a U-shape, and an O-bending stage F for bending this metallic...
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JP2003191014 |
To obtain a method and a device for manufacturing a bottle can by which a bulged part the cross-sectional shape in an arbitrary position in the circumferential direction is uniform is formed in a specified position.In a manufacturing met...
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JP3440268 |
To prevent a cut face from deforming and a variation in the product length of final cutting from occuring. This system is provided with a multi bar straightening device 1 which multi-straightens steel bars, an inlet side guide pinch roll...
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JP2003170236 |
To provide a cylindrical member having a spline which can be molded in a short period of time and which has a high working accuracy and to provide an apparatus and a method for manufacturing the same.The manufacturing apparatus 1 manufac...
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JP2003170223 |
To provide a method for correcting the end of a steel pipe capable of sufficiently correcting the curvature change of a short period in a tube circumferential direction corresponding to a divided pitch of dies, and an apparatus with a si...
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JP2003164916 |
To provide a deflection correction method for a formed product in a roll forming apparatus which enables smooth correction of deflection occurring in the formed product without necessity for increase in an equipment cost or installation ...
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JP2003164918 |
To provide a method and apparatus for bending work which controls so as to minimize flattening induced to a metal pipe as much as possible.In the method to perform continuous bending work moving a heated zone 6 continuously to the pipe l...
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JP3434981 |
To efficiently provide straightness over a whole length of a long member with excellent accuracy without specially improving an accuracy of an press straightening. First to fourth sensors 17-20 are provided on a press body 1 with equal i...
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JP3433697 |
To decrease the dimensional fluctuations at the time of roll straightening of heat transfer tubes for heat exchangers and to prevent the buckling of fin peak parts at the time of the roll straightening of low fin tubes by forming at leas...
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JP2003154410 |
To provide a method and a device for straightening shapes which are excellent in the accuracy of the dimension of a cross section and the straightness over the entire length and by which the internal residual stress and the local deterio...
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JP2003154426 |
To provide a method for forming the mouth part of a threaded metal vessel which can prevent any bridge breakage of a cap.The threaded metal vessel is formed of a metal material by impact forming, drawing or a draw-ironing, and the vessel...
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JP2003152154 |
To provide a lead correctional device for correcting leads for an electronic part for a semiconductor device or the like so as to have a specified pitch without generating any external injury, and to provide a comb tooth employed therefo...
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JP2003145347 |
To provide a pipe end correcting jig capable of correcting the shapes of and chamfering pipe end portions of various sizes and types of pipes by increasing the type and number of correcting cutting edges, eliminating the possibility of d...
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