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JP2004283896A |
To prevent impression or the like from being left in a product-shaped part when straightening distortion.A plurality of projection parts 2, 3 and 4 are integrated with a portion other than a product shaped part of a structure 1. When str...
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JP2004276097A |
To provide a correcting tool for tube end shape in the tube with which the deformation of the tube end part can easily be corrected without applying the force so much.In the correcting tool for tube end shape of the tube, correcting the ...
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JP2004276061A |
To provide a straightening device 11 which can straighten a pipe 12 while suppressing friction resistance to the pipe 12 and which can reduce the effects caused by a matter adhering to the pipe 12.The pipe 12 to be linearly straightened ...
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JP2004276051A |
To provide a bar-shaped base stock for cutting from which a bar-shaped cut goods having excellent dimensional accuracy is manufactured.This base stock 1 is for cutting the bar-shaped cut goods essentially composed of aluminum or an alumi...
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JP3572331B2 |
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JP2004261834A |
To provide a method and device for correcting strain capable of obtaining a stable and highly accurate strain correction.The device for correcting strain 1 comprises a strain detecting means 40 to measure the amount of strain of a cranks...
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JP3569006B2 |
In a process for shaping the end of a tube (2) with an oblong cross-section to a circular cross-section the shaping occurs in a single radial compression stage from the exterior. The tube (2) is disposed with its shortest axis in corresp...
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JP3558398B2 |
The straightening machine for rolled beams, in partic. hyper-beams, incorporates axially adjustable straightening disks which are mounted on a shaft (1) and contact beam flanges from inside, and are used for straightening at least one of...
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JP2004230387A |
To provide a steel pipe rotating machine which can be installed even into a narrow space, is simpler than a conventional machine and rotates the pipe safely.This machine is provided with: a pair of right and left rotating rollers for sup...
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JP3555353B2 |
To improve straightening precision, to reduce a straightening manhour and to improve workability by fitting a Ni base alloy cylindrical part such as an aircraft engine casing into a straightening die, heating it to neighborhood of the ag...
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JP2004225558A |
To make a highly accurate correction by properly supporting an engine valve.A face part of the engine valve is rotatably supported by a support member by regulating the rotational axis direction, and a neck part 1c of the engine valve 1 ...
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JP2004216409A |
To provide a reverse straightening device for a round steel bar which can make bending specifications stricter and can make shift to reshot blasting treatment and the like possible without increasing the number of handling times.The reve...
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JP3546460B2 |
PURPOSE: To make troublesome cutting machining unnecessary and shorten a processing time drastically and improve productivity by correcting the projection degree of ribs into a size that corresponds to a bearing by push-pressing plural r...
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JP2004202554A |
To provide a metallic tube having high roundness and high straightness at a low cost by continuously performing a finishing process in the manufacturing process of an electric resistance welded tube, maintaining high productivity and rea...
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JP3539625B2 |
To provide a device for rolling inner surface beads of a steel pipe capable of maintaining a satisfactory lubricant state in the slide part within a roll holding truck within the pipe even if the inside of the pipe is kept in a high temp...
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JP3539612B2 |
To provide an equipment and method for smoothing a steel pipe seam portion which can effectively control a thickened seam portion of a steel pipe produced by the solid phase pressure welding method. With the equipment to smooth the seam ...
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JP2004174535A |
To surely guide a bent rolled stock to a straightening stand and to perform satisfactory straightening.The straightening device 5 is provided with the straightening stand 10 and a guiding means 20. The straightening stand 10 has a plural...
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JP2004174557A |
To provide a circularity correcting method for obtaining a thin-walled cylinder of less dispersion of film thickness, and a circularity-corrected thin-walled cylinder, and the thin-walled cylinder having a surface layer material thereof,...
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JP3536995B2 |
PURPOSE: To keep pressing force even if oil leaks to some extent by exposing a pressure accumulating part provided with a piston supported by an elastic member to a ring body communicated with a hydraulic chamber between the ring body an...
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JP3534466B2 |
PURPOSE: To cut bar steel into each product with an accurate length and also, reduce the maintenance and management expenses of the device by omitting a measuring device requiring maintenance inspection, concerning the device which cuts ...
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JP2004141923A |
To provide a method and a device for straightening a shaped steel by which the degradation of a material near the base part ( K zone ) of the shaped steel, and also the degradation of the accuracy of straightening caused by defective rol...
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JP2004141924A |
To provide a straightening method for a shaped steel and its device by which the degradation of the material near the base part ( K zone ) of the shaped steel, of course, the problems of disturbance caused by bending moment are effective...
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JP2004122156A |
To provide an apparatus for producing an internally grooved tube in which an internal groove with a stable shape in a longitudinal direction can be formed at a low production cost, and to provide a method for producing an internally groo...
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JP3520646B2 |
To improve the dimensional accuracy of rolled shapes by respectively providing sizers on the inlet side of an intermediate universal mill, the outlet side of an intermediate edger mill and the outlet side of a restraining guide device an...
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JP2004114083A |
To provide a pipe forming apparatus with which the efficiency of the forming work of a tubular pipe is improved and the accuracy of the roundness of the tubular pipe by enabling working and forming within the same apparatus after evaluat...
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JP2004082169A |
To provide a straightening method of an extruded material which is high in dimensional accuracy and by which cost for straightening is not increased.The straightening method of the extruded material 50 comprises a stage where the extrude...
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JP3506846B2 |
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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JP2004074257A |
To suitably straighten into the straightness of a long material to be straightened, having rectangular cross section and to improve the workability.In a method for straightening the straightness of the long material W to be straightened,...
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JP3503381B2 |
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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JP3503380B2 |
To reduce the number of universal rolling mills and to shorten the length of rolling line and enlarging freedom of layout by stopping rolling in the rolling line on a state of flange in a shape outwardly inclined and then straightening t...
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JP2004042124A |
To improve the productivity of U-shaped steel for reinforcing steel floor panels which compose a road surface of a bridge.NC processing of a bolt hole and a notch is carried out at the end part of a steel strip material, and three steel ...
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JP3494532B2 |
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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JP2004019854A |
To provide a constant water feeding interposition method capable of using endless connection pipe elements in the circumferential direction of a pipe.This constant water feeding interposition method comprises a correction step for correc...
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JP3489308B2 |
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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JP3480726B2 |
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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JP3478748B2 |
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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JP3474552B2 |
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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JP2003340521A |
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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JP2003535697A |
A section straightening machine is operated by a method which involves passing the structural sections through the array of straightening tools. Section straightening forces are applied to adjustable shafts carrying the tools and adjuste...
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JP3471418B2 |
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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JP2003334614A |
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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JP2003320417A |
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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JP2003320416A |
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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JP2003311328A |
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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JP2003305513A |
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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JP2003305514A |
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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JP2003305515A |
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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JP3461685B2 |
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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JP2003290849A |
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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JP3456053B2 |
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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