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JP6797917B2 |
A method for manufacturing a gear toothing on a metallic workpiece and a tool device for calibration of a gear toothing inlet and/or a gear toothing outlet of a gear of the metallic workpiece. The method includes producing the gear tooth...
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JP6795131B1 |
Provided is a rolling straightening machine capable of performing outer diameter reduction rolling and straightening rolling of a pipe material or a bar material at high speed and with high accuracy. The rolling straightening machine 1 o...
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JP6792878B2 |
To provide a manufacturing method of a press-molded article of which a cross sectional circle of a remaining cylindrical part has high roundness even when a flat surface part is formed on a part of a side peripheral wall of the cylindric...
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JP6761576B2 |
To provide a die for bending correction, a bending correction method, and a manufacturing method of turbine blade rough-forging which can correct a shape easily by using a radial forging machine even in a case of a hardly-processable mat...
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JP6764080B1 |
To provide a straightening device for a metal rod with a measuring function which does not require manual length measurement. An outer shell 11 is included, an adjustment space 12 is installed in the outer shell, and an inner wall below ...
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JP6760484B2 |
A wire rod straightening machine whereby straightness of a wire rod can easily be enhanced, the straightening machine performing straightening by passing a metal wire rod through a plurality of rollers, wherein the wire rod straightening...
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JP6755750B2 |
To provide an apparatus for straightening strain of a sheet pile capable of straightening the sheet pile with respect to opening deformation and closing deformation at a higher speed and with higher accuracy.An apparatus 3 for straighten...
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JP6740405B2 |
The invention belongs to the technical field of steel bar machining equipment, and discloses a straightening device. The straightening device comprises two end portion straightening mechanisms and a middle straightening mechanism located...
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JP6738537B2 |
To provide a hot forging method which can easily joggle, cog, and correct bending by using a radial forging machine even in a case of a hardly-processable material used for a turbine blade.A hot forging method includes: a forging process...
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JP6701675B2 |
To materialize a method of correcting roundness which can suppress a cost when roundness correction is carried out on plural kinds of ring-shaped members with different diametrical dimensions.While outer peripheral surfaces of a pluralit...
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JP6696949B2 |
The invention provides a round-rod two-roller straightening machine. The round-rod two-roller straightening machine comprises a workbench, a first driving bench, a second driving bench and a transmission shaft, the first driving bench is...
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JP6660086B2 |
The invention discloses a roll bending forming device for ten-hole micro-channel flat tubes. The roll bending forming device comprises an uncoiling machine, a straightening machine and a roll bending forming unit which are sequentially a...
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JP6651474B2 |
To provide a highly accurate correction method in which a workpiece extended with pressure applied in the correction direction is moved in the longitudinal direction by the tensile force of not causing plastic deformation, and thereby th...
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JP2019214052A |
To provide a core grid bending correction technique by which physical burden on an operator is reduced and bending of a core grid is reliably and efficiently corrected in a short time without relying on a manual work, whereby a disposal ...
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JP2019195828A |
To provide a joint correction method or the like of a steel sheet pile in which a joint width can be corrected without accompanying the curvature of a joint bottom, etc.A joint correction method of a steel sheet pile S concerning the pre...
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JP3223644U |
To provide a coil wire rod supply device which effectively reduces a waste terminal of a coil wire rod, suppresses material loss and cost, and reduces a work load on an operator. In a coil wire rod supply device 10, a terminal portion of...
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JP6593418B2 |
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JP6586928B2 |
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JP6580935B2 |
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JP2019155464A |
To provide a hot-forged article warping correction device which can correct warping of a hot-forged article of a long form with good efficiency and high accuracy.This device comprises: first and second clamp mechanisms 2, 3 which grip a ...
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JP6557169B2 |
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JP6551246B2 |
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JP2019126221A |
To provide a tool for electric wire that restores a cross section of an electric wire crushed by fastening a screw and therefore deformed into a circular shape.A tool 1 for an electric wire, which restores a flat electric wire or recesse...
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JP6547706B2 |
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JP6546684B1 |
To provide a curved portion of a bent pipe in a cross-sectional view in a case where the radial direction of a bulge provided in the curved pipe portion and the axial direction of a straight pipe portion following the curved pipe portion...
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JP2019520030A |
In the present invention, a pipe outer peripheral wall (4) preferably made of a galvanized metal thin plate material is prepared, and the outer peripheral wall vertical edge (6) of the pipe outer peripheral wall (4) extending in the pipe...
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JP6542789B2 |
A method of forming a sheet pile wall comprising cold reforming a Z-shape pile or a U-shape pile and connecting a plurality of reformed steel piles so as to form a sheet pile wall having at least one engagement section, the engagement se...
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JP6508568B2 |
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JP6496771B2 |
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JP6469856B2 |
A forged crankshaft manufacturing apparatus processes a forged blank with no flash. The forged blank includes at least one rough crank arm having an excess portion protruding from an outer periphery of a side portion thereof. The manufac...
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JP6447117B2 |
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JP6443683B2 |
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JP6436181B2 |
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JP2018192521A |
To provide a method for manufacturing a weld steel pipe by which a weld steel pipe having a high roundness can be obtained.A method for manufacturing a weld steel pipe comprises: a preparation process in which a weld original pipe is pre...
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JP2018183787A |
To provide a method of manufacturing a steel pipe capable of improving roundness of a cross section of a pipe end without enlarging only a pipe end part, concerning a steel pipe obtained by forming a steel sheet tubularly by UOE, JCOE, a...
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JP6423888B2 |
A roll straightening machine for straightening an elongated string member includes at least one first straightening roll rotatably mounted around a first rotation axis, and at least one second straightening roll rotatably mounted around ...
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JP6408332B2 |
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JP2018159126A |
To provide a titanium tube molding roll excellent in abrasion resistance, wear resistance, peeling resistance and friction coefficient of roll surface.The titanium tube molding roll includes: a base material having a steel composition co...
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JP6380218B2 |
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JP2018123371A |
To provide a straightening-processed metal rod and a manufacturing method thereof, which is a material for bolts and the like having a compressive residual stress entirely and continuously and increased fatigue strength of the fastening ...
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JP6370511B1 |
A first arrangement push control unit 201 has a plurality of external rollers arranged at equal intervals in the same circle around a rotation axis of an external holder at a first position of one end of a metal tube or metal. Multiple e...
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JP6371251B2 |
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JP2018103231A |
To enable a proper work of welding and a smooth finish of a butting part by correcting a vicinity of two end faces parallel with an axial direction in a cylindrical workpiece into a circular arc form of predetermined curvature to make th...
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JP6344485B2 |
A method for producing a forged crankshaft includes a die forging step of forming a forged blank having a crankshaft shape by die forging, and a pressing step of pressing the forged blank (30) by a first dies (10). The forged blank (30) ...
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JP2018086682A |
To provide a pipe material correction method for correcting the end part of a pipe material by raising the roundness more.A pipe material correction method for correcting the circularity of a pipe material comprises: an intermediate part...
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JP2018069396A |
To provide a tube cutting system capable of stably performing an accurate cutting work of a tube by preventing deformation of the tube due to buckling caused when a cutting device does not move.A tube cutting system 200 sequentially cuts...
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JP6322510B2 |
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JP6317803B1 |
To provide a crankshaft manufacturing apparatus which has a relatively low cost and does not require expert knowledge for operation or repair. A crankshaft manufacturing apparatus includes a twist portion and a hydraulic drive portion. T...
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JP6317802B1 |
To provide a crankshaft manufacturing apparatus capable of correcting a height difference between processes without a separate configuration and performing a straightening process independently. A twist portion 140 has a first jig 144 to...
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JP2018058074A |
To provide an umbrella breakage correction device of section steel which can efficiently flatly correct the umbrella breakage of up-and-down flanges without the necessity for troublesome work such as work for vertically inverting section...
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