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JP3739692B2 |
To provide a shaft with a screw thread and a method for manufacturing the same which enable elimination of the correction process of a bend after rolling by correcting the bend occurring during the roll-forming of the screw thread. A wor...
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JP2006007285A |
To obtain a method for producing a boss member by which the boss member having a desirable function can be produced at a low cost.In an aluminum alloy heat-treated material beforehand performing the heat treatment to a blank 10 and havin...
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JP2006500230A |
The crankshafts have rounded areas (14) between the bearing points and the transitions (7) adjoining same which are then roller-burnished with a roller-burnishing tool. Whilst keeping a distance (17) from the relevant transition the bear...
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JP2006000923A |
To provide a shaft member manufacturing method capable of forming a circular flange having the required outside diameter, enhancing the productivity of the shaft member, and reducing the production cost.A heading step of heading a metall...
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JP3731131B2 |
To improve the workability of a cylinder groove. In a cylinder groove working device 20 of a gas cylinder device in which a cylinder groove 6 capable of generating the expansion side damping force is formed on an inner circumference of a...
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JP2006002238A |
To provide a roll mold on which a fine irregular shape is formed highly precisely and to provide a method for manufacturing the same.A master block (10), on which surface an irregular shape (11) is formed, is pressed against the surface ...
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JP2005349455A |
To provide a method for producing a wheel by which a rim flange part can easily be formed by the increase in thickness even by a low-output spinning apparatus.This method is provided with: a pressing stage where a rolled metal sheet is p...
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JP2005349409A |
To provide a rolling method, by which irregularities for accurately and surely carrying a member represented by recording media are formed on the surface of a shaft even if the shaft has a shape to be easily deformed, and to provide a ro...
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JP2005344884A |
To provide a piston and its manufacturing method capable of further easily improving durability of a ring groove.Roll processing is applied to the ring groove 11 for finishing a groove width of an outer peripheral end part formed in a na...
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JP3725136B2 |
To provide a method of forming a member made of sheet metal by which the deformation of a center hole portion of a blank is prevented and the strength of the blank is secured by suppressing the thickness reduction of the blank over the e...
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JP3724135B2 |
To produce a deformed cross-section bar having the excellent workability, productivity and high quality. Rolling rolls in order to produce a deformed bar are composed of three stages of 10A, 10B and 10C, and each rolling roll is composed...
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JP3720564B2 |
To provide a producing method which can produce an outer ring preform in extremely good efficiency. A cylindrical formed material A2 with a step having an outer cylinder part R1 and a bottomed inner cylinder part R2, is formed from a dis...
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JP3722181B2 |
To prevent a crest of a projecting line form rolled from being pressed on a support roller to be crushed. While supporting a columnar stock 16 with a support roller 30, the columnar stock 16 is pinched and pressed between a pair of form ...
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JP3722576B2 |
To prevent the generation of form rolling scratch on a work when the roll die is separated from the work after rolling a screw or worm, etc. In this device, a hydraulic by-path circuit 30 is installed in hydraulic cylinders 8, 9 which ar...
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JP3722974B2 |
To provide the expanded dimension capable of effectively expanding a cylindrical body without generating any cracks. A heated cylindrical body R1 is set in an eccentric hole 69 formed in a tip surface of a rotary shaft 68. A tip tapered ...
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JP3720805B2 |
To provide a rolling dies, which is equipped with screw rollers of a long life and is improved in durability. A rolling dies is equipped with screw rollers 3 having continuous parallel thread parts 6. At the tip end side extending from t...
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JP3720135B2 |
To easily correct errors in the axial line O1, O2 directions of rolling rolls, to reduce the manpower and time required for assembling/maintenance and to enable high dimensional precision rolling. A pair of rolling rolls 11, 12 are mount...
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JP2005535855A |
To configure a shaft, a positioning method, capable of positioning a member attached to a shaft of a DC motor so as to surround the shaft circumference at the lowest possible cost and without a gap in the axial direction while minimizing...
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JP2005324224A |
To obtain a grooving tool with which grooving work is carried out on the hollow inner peripheral surface of a sleeve member even when it has the extremely small diameter of the hollow circle and the grooving method of the sleeve member u...
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JP3718736B2 |
To manufacture a deformed cross section product consisting of a flat plate-like part and plural rising walls integrally formed in one side surface of the plate-like part and mixing the high rising wall higher than a reference risen wall ...
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JP3717224B2 |
To manufacture an oil bolt which does not deteriorate the strength, is simple in a roll forming device with small man-hour at a low cost. A shallow groove 6 is formed in a circumferential surface of a cylindrical part of a bolt main body...
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JP3716617B2 |
To provide the method for grooving the outer surface of a metallic tube by which an annular projection is prevented from being caused on the inner surface of the tube. In this method for grooving the outer surface of the metallic tube 2,...
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JP3715925B2 |
A hub having a bore, in accordance with the present invention, is spun-roll formed of a portion of an annular sheet metal disc. The hub is formed by radially displacing a portion of the annular sheet disc outward from the bore. The so fo...
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JP3715293B2 |
To form a screw which performs a locking function without fail. A female screw material is pressed by a tool thread of a cold forming tap 1 to cold-form a pair of projected ribs while the ribs are drawn near to become like one thread. Th...
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JP3713680B2 |
To provide heat-insulating shapes of which the manufacturing cost is held down, while preventing longitudinal shrinkage of a heat-insulating material to a long-sized piece. The long-sized materials 2 and 3 made of a metal having hold-in ...
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JP3714588B2 |
To improve the operation efficiency by forming a teeth at the periphery of a disclike material, the thickness of which is increased by performing a rotation roll forming, wherein a cutting treatment process is reduced as a result that a ...
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JP3713465B2 |
To eliminate the rise-up of a chamfered part to tooth faces and burrs which occur at the chamfered part of the end face of a gear or the like, in form-rolling gears, splines or the like by a form rolling flat die. In a form rolling metho...
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JP2005305512A |
To provide the thread rolling method of a screw device by which the visual observation of an operator and the measurement of time required for the thread rolling are unnecessary and the completion of the thread rolling is finely detected...
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JP2005305527A |
To provide a form rolling machine capable of performing form rolling without any synchronous deviation of a pair of thread rolling flat dies even under a condition that the high-speed form rolling is continuously repeated.In the form rol...
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JP3711890B2 |
To provide a method and apparatus for rolling a gear tooth capable of preventing an excess section from being put into the tooth bottom surface side set up in the end stage of the tooth form rolling. A tooth profile binding groove 10 and...
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JP3711844B2 |
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JP2005299706A |
To provide a worm provided with a configuration for eliminating breakage of a roll die and capable of increasing its rigidity and dispensing with deburring at a gear cutting start point and a gear cutting end point.In this worm having on...
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JP2005296974A |
To provide a hypoid ring gear manufacturing method in which the durability of a forming roll and a bearing part is enhanced, and the working accuracy is further enhanced by eliminating generation of unbalanced load.A pair of two ring-sha...
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JP2005297027A |
To provide a very small recess working device capable of forming very small recesses of a complicated shape while suppressing generation of bend when forming very small recesses on an outer circumferential surface of a cylindrical member...
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JP2005297034A |
To provide a compact rolling ball screw that needs no incomplete thread and that can shorten the length of the ball screw axis, even if the ball screw axis has a large diameter part.In this rolling ball screw, the ball screw axis 1 has a...
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JP2005297065A |
To prevent infiltration of water causing brittle fracture on a bolt shank or bearing surface, by making a friction part having a rugged part with higher hardness than that of a material on which a friction part is to be formed, by prepar...
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JP3710876B2 |
To obtain a chip for welding which can lengthen the electric supply length of an electrode wire, by forging a chip member composed of a pieced rod to form a polygonal shape and a tapered part and successively, applying the formation of a...
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JP3709712B2 |
To provide the method for forming a tooth forms of a clutch drum by which the occurrence of drawing scraps, flash, folding, etc., can be prevented and the dimensional precision of the clutch drum can be improved in the case of forming th...
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JP3710388B2 |
To provide a manufacturing method of a cylinder-shaped body having a toroid protrusion on its inner surface which can process and form an extremely accu rate toroid protrusion on an inner surface of a cylinder with a high productivity br...
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JP2005288456A |
To provide a rolling die with which even hard material to be worked is form-rolled accurately and surely and also the life of which is prolonged.In this form-rolling die 1, working teeth (a) at beginning points 5, 15 are lower in the too...
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JP2005291465A |
To improve function of an EPS system by improving worm forming accuracy, especially tooth line accuracy, and reducing fluctuation of transmission torque between a worm and a worm wheel.A worm is manufactured by rolling a work W with two ...
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JP3707842B2 |
To provide a method for rolling a Z-section sheet pile from a semi- finished H-beam by a means for rolling for delineating a rolling plane. The semi-finished H-beam is so oriented that its web 12 is substantially paralleled to its rollin...
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JP3706994B2 |
To enable high precision working of coining for marking, fluting or thread form rolling, etc., to a rolled material while continuously conducting from pressing to form rolling. An apparatus is provided with a base member 31 for form roll...
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JP2005279654A |
To provide a work supplying apparatus with which a work is correctly supplied to the work chucking position of a form rolling device.In the work supplying apparatus 1, the work W is placed on each groove 2b which is formed on the tooth o...
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JP3704475B2 |
The present invention provides a method of producing a poly-V pulley which can economically produce a poly-V pulley of the type that is to be inserted and coupled onto a shaft via a one-way clutch or a bearing, the number of steps being ...
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JP3704474B2 |
The present invention provides a method of manufacturing a poly-V pulley made of metal sheet, which can be easily produced from a thick flat-plate material. By this method, the poly-V pulley is formed to have a two-part arrangement of po...
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JP2005271037A |
To provide an apparatus for machining minute recesses, which can drastically improve the machining accuracy of the minute recesses by suppressing the occurrence of bending when the minute recesses are formed on the outer peripheral surfa...
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JP3699553B2 |
To reduce the weight of an article, to increase the strength and to simplify its machining by executing with one chucking a process to form an intermediate blank having a cylinder like flange of a prescribed length by ironing a circular ...
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JP2005247163A |
To provide a light-weight and low-cost ball screw for electric power steering keeping its precision and quality.This ball screw for a rack-assisting type electric power steering is constituted such that a part of a steering shaft 2 is a ...
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JP3695854B2 |
To provide a head for roll forming of a tapered screw for a tube in which a work after roll forming can be easily taken out. In a head for form rolling of a tapered screw for a tube, a plurality of form rolling rollers 16 are circumferen...
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