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JP2002224750 |
To provide a correction method capable of easily adjusting a spiral grooved lead formed at an outer peripheral surface of a rodlike body within tolerance.Both ends of a ball screw (work) 1, which is a rodlike body, are held by a fixed ch...
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JP2002219515 |
To efficiently correct distortion of an axial workpiece.An axial workpiece 10 is rotated by the rotating mechanism 12 and a detector 20 detects a distorting amount. The detected distorting amount is fed to CPU 22, which determines a pres...
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JP2002212640 |
To provide a method for producing an angular steel tube by which the improvement of the quality of an angular steel tube by heating can be maintained, further, its loss caused by high temperature heating is reduced, dents are hard to be ...
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JP2002210516 |
To provide a roll forming device for correcting the shape of a cylindrical body which is formed of a long metallic plate with rollers from the outer peripheral surface.A shape correcting apparatus M2 for correcting the shape of the outer...
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JP2002205118 |
To provide a straightening press method capable of safely straightening a large welded steel shape without requesting any supports for preventing overturning, and an apparatus thereof.A straightening press apparatus comprises a receiving...
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JP2002205117 |
To provide a corrector of the channel width capable of efficiently correcting the deformation of the channel width with high accuracy which is caused when a steel member of channel section such as a longitudinal rib provided for reinforc...
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JP2002205116 |
To provide a straightening method of a seamless steel tube with low residual strain by controlling contact surfaces of the steel tube to be straightened and a roll to prevent generation of any local residual strain.In a two-roll straight...
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JP3328387 |
PURPOSE: To provide a method by which bent and roundness of a steel tube are accurately and simultaneously corrected at the time of expanding the steel tube of UO steel tube, etc. CONSTITUTION: In a method for correcting bent and roundne...
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JP2002192233 |
To provide an apparatus for straighening a long size material without receiving the influence of a straightening means upon retreat of the long size material when being bent.The apparatus has a conveying part for conveying a long size ma...
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JP2002172424 |
To provide a unit for straightening an assembled crankshaft capable of simply and correctly straightening fluctuations of the assembled crankshaft using a universal shaft fluctuations straightening unit.Based on measuring results of a se...
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JP2002172425 |
To provide an apparatus and method for straightening a cross section shape of a steel pipe capable of inexpensively and easily straightening circularity in the location separated from the tip end portion of the steel pipe.The apparatus f...
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JP2002158130 |
To provide a forming device and method of a coil for correcting the shape of the coil.The coil-forming device comprises a tool 4 for supporting a winding core 3, press plates 6 and 7 that are pressed to the outer periphery of a coil 2 th...
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JP3311009 |
PURPOSE: To improve the repeated usability of a cylindrical member by uniformly expanding the deformed part of the cylindrical body towards the outer circumference while controlling a corrective piece to expand the diameter. CONSTITUTION...
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JP3311211 |
To provide the straightening equipment for a square steel tube which straightens easily and simply the deformation at the top and part or the rear end part. Both end parts of a square steel tube 3 which is hot-formed in a hot forming mil...
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JP3309807 |
To provide a size-free rolling method of metallic materials in which the finished cross-sectional shape in the outer peripheral part is approximately complete roundness, the uneven diameter difference is extremely small and the cross-sec...
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JP3311714 |
To provide a disk wheel correcting device low in cost and small in size by simplifying its configuration. The disk wheel correcting device comprises a table 2 with an aluminum wheel A placed thereon, a fixing means 3 to bolt-tighten the ...
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JP2002143929 |
To provide a portable channel steel straightening machine in which any large facility is not required, even an inexperienced operator can easily perform the work, and the productivity is high.This straightening machine has side plate par...
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JP3307294 |
To provide the method and device for manufacturing a seamless steel tube made of an Fe-base alloy whose Cr content is <15 wt.%, which are immediately applicable to existing manufacturing equipment by which a product steel tube reduced in...
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JP3305657 |
To obtain the sheath with both of strength and flexibility, and which is easy to house a PC steel with plural cross-sections of a tube. This sheath 4 is manufactured as follows, that is, the spiral steel tube with ribs swelled on its out...
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JP3302393 |
PURPOSE: To produce a high strength hardened steel tube for automobile door reinforcement improved in initial deformation resistance by subjecting a resistance welded tube having specific composition to induction hardening and then to a ...
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JP3299944 |
To efficiently conduct straightening by smoothly conducting a feed to straighten a bent panel. In the panel continuous straightening apparatus to straighten a bent panel P in which a reinforcing rib i is mounted along the longitudinal di...
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JP3297727 |
To provide a hose joining metal tool composed of a belt, a lever and a fastener which is inserted easily in the hose by making the shape of a ring into nearly complete roundness. In a 1st process (#1), on a band like steel 2a fed by a fe...
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JP2002105538 |
To provide a method and a facility for manufacturing a heat-treated rail in which both web parts of both ends of the rail are also forcibly cooled when forcibly cooling the head and leg parts of the rail after the rolling and the residua...
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JP2002102966 |
To manufacture and repair even a large diameter pressure vessel with less man-hours and high quality and prolong the lifetime.A steel plate 5 is cut in a prescribed length, bent parallel in the main rolling direction to fabricate a longi...
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JP3293246 |
PURPOSE: To manufacture a highly strong seamless steel tube having little surface flaws by straightening in a specified range of temperature after a hot rolled seamless steel tube is sized, cooled to specified temperature range in a low ...
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JP3295127 |
PURPOSE: To smoothly and efficiently work without generating seizure, etc., even on the ring like product that the width of axial direction is long. CONSTITUTION: A ring like product W is pressed to the axial direction to a sizing die 2 ...
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JP3292823 |
To provide a production method for a round steel tube having the reduced whole equipment cost and a good working efficiency. By pressing from the outside after plural places in a width direction of a strip steel are bent and by welding a...
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JP2002089583 |
To reduce the manufacturing cost of an inner ring by omitting the process of polishing a track groove in the inner ring.A method of manufacturing a constant-velocity universal joint inner ring having on its spherical outer surface a trac...
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JP3289669 |
To prevent the defective correction of round part in a wide flange shape steel by calculating a correcting load and varied quantities of one pair of roll widths from the necessary intermesh quantity to the correction, adjusting the roll ...
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JP3288215 |
To simply change the roll width of a roll straightener for straightening the camber of a wide flange shape on line. A moving roll 5b is fixed to a mounting seat 6 and the female screw of a screw ring 9 is engaged with the male screw 6a o...
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JP2002066665 |
To provide a working method of a cylinder body capable of satisfactorily forming an end portion of an approximate true circle by directly processing an elliptical cylinder body and also capable of particularly improving working capabilit...
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JP2002059216 |
To efficiently manufacture a plane body of a high precision by efficiently straightening the plane body.By comparing a plane suitable for straightening (hereunder, expressed as straitening objective plane) a plane section 1a or an outer ...
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JP3280746 |
PURPOSE: To cope with change in size in a short time by arranging an outer frame having elevating means and a pair of inner frame movable reciprocally in the outer frame and having a transfer mechanism movable along the longitudinal dire...
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JP3279384 |
PURPOSE: To provide a method for straightening a rail with which the frequent occurence of damage due to rolling fatigue of rail that is anxious in accordance with speed-up of a train and lifting and slipping of wheels due to the ruggedn...
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JP3279385 |
PURPOSE: To provide a rail production method to improve the rolling traverse defect property generated from inside of a rail so as to settle the problem in heavy load railway abroad. CONSTITUTION: Rrolls 4 of 100-600mm diameter are place...
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JP2002047537 |
To provide a material for a round bar which does not eventually bend, reliably suppresses the bend to be negligibly small so as not to raise any problems in the industrial use even when a bend occurs, and has no degradation in surface qu...
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JP3275387 |
PURPOSE: To provide a jig by which a metal strip can be machined into a circular column near to a complete round through heat treatment. CONSTITUTION: The jig is composed of an outer structure body 2 having a cylindrical inner circumfere...
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JP2002035869 |
To provide a die for a mechanical pipe expanding machine capable of reforming a pipe by pressing the portion which is formed on both sides of a bead of steel pipes or the like and which is untouched with the expanding machine in reformin...
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JP3274803 |
To repeatedly bend a bar stock even in a horizontal plane with a simple structure, to cope with various dimensional change of the bar stock, and to provide excellent correction accuracy and quality. Correction rollers 2, 3 are fitted to ...
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JP2002030442 |
To provide a substrate treating method by which plasma discharge is stabilized by suppressing the expansion of the ear waves of a beltlike substrate, and a thin film solar battery having good photoelectric transfer efficiency, yield and ...
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JP3271469 |
PURPOSE: To obtain high straightening precision. CONSTITUTION: By inputting a signal to identify an individual body of material to be straightened, a straightening position, a pressing direction, a plastic deformation required for straig...
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JP2002018524 |
To provide a deformation straightening apparatus capable of precisely straightening a deformation in a short time while suppressing a hardness variance due to a heating fluctuation in straightening a deformation.In the state an outer dia...
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JP3268378 |
PURPOSE: To provide a manufacturing method for forming the angle in the stepped part of a special shaped bar material having recessed lines or projecting lines up to right angles without wasting materials at a relatively higher speed by ...
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JP3267185 |
To reduce defects by burning flaw and to enable cold-drawing even it is a steel tube having several tens μm thick scale. After generating cracks 3 on the scale 2a of a steel tube 2 with the scale 2a stuck, cold-drawing is executed by oi...
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JP2002001431 |
To provide a surface reforming correction machine that can perform a process to correct straightness of a round bar steel stock and a process to grind the surface of the round bar steel stock at the same time.The surface reforming correc...
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JP2002001428 |
To provide a method for manufacturing a quadrangular steel pipe which can make each flat plate section planar and each size and configuration of the right- angled bending section uniform.When a group of rolls 42-44 of a rolling means 40 ...
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JP2002001432 |
To provide a method for manufacturing a hollow rack shaft which enables an economical and highly efficient hollow rack to be obtained by correcting bends of the hollow rack shaft generated by welding the abutting section of the hollow ra...
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JP2002001442 |
To provide a manufacturing method for a square shape steel pipe in which the intermediate flat plate portion is made flat, and the size and shape of each right angle bent portion are made even.Two portions near equivalent to groove porti...
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JP2002001433 |
To shorten time involved for a deformation correcting work by reducing an excessive or insufficient bending of a workpiece and decrease fatigue of the workpiece accompanying the correcting work.The deformation correcting apparatus 1 is p...
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JP3264140 |
PURPOSE: To provide a gear device small in the manufacturing cost and long in the service life by projecting a center part in the tooth trace direction from each end part so that the tooth flank and the tooth crest of an internal gear de...
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