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JP3780128B2 |
To prevent the deformation of a part of a center hole in a blank, and to suppress the reduction in wall thickness and degradation of the strength of the blank in a sheet metal member forming method in which the form-rolling is achieved b...
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JP3780432B2 |
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JP3779531B2 |
To provide a golf club head which is made of a metal and is manufactured by combining a plurality of divided cores with one another and in which at least one of the divided cores consists of a metal sheet with parts different in wall thi...
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JP3780209B2 |
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JP3778790B2 |
To increase biting capacity in an inclined biting teeth section of flat die for form rolling, improving pitch accuracy and durability. In the form rolling flat die 1 comprised of an inclined biting teeth section 10, a finishing teeth sec...
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JP2006122946A |
To allow a vehicle wheel to be detached from a clamp member and left on a mandrel without deforming a rim part after the spinning.A cast preform 30 integrally comprises a disk part 31 and an original rim part 32. Next, the original rim p...
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JP2006122993A |
To provide a rough surface forming roller whose friction coefficient is high, productivity is improved, and cost is low, and a rough surface forming apparatus, a rough surface wire, and a rough surface forming method.The rough surface fo...
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JP3775207B2 |
To provide a FEM simulation method which can reproduce complicated contacting process of a tooth surface of rotating tool with a piece of work with high fidelity, which is an important factor for gear rolling process. The simulation mode...
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JP3776240B2 |
To provide a manufacturing method for a rice ball-shaped triangular thread, capable of reducing manufacturing costs of a mold, capable of manufacturing a triangular thread at low cost, capable of manufacturing a long triangular thread, h...
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JP2006116587A |
To form a minute recess with a constant depth even in the case that the contour shape of a workpiece is not detailedly obtained, by pressing a working roller against the outer peripheral face of the workpiece with a constant load, when f...
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JP2006110621A |
To reduce the generation of burr at the time of die-forging, to simultaneously make high-strengthening and fining of recrystallized grain in the die-forged product and further, to reduce the cost for die-forging.An aluminum alloy round b...
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JP2006110594A |
To provide a method for working a material difficult to be worked by which Ti-base material or W-base material can be worked without causing the crack and the uneven working.In the method for working the material difficult to be worked w...
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JP3770320B2 |
A bolt according to the invention comprises: a coarse screw thread portion of pitch P, which is formed from the tip end portion of a bolt shank to a prescribed portion; and a fine screw thread portion of pitch p (p=P/n wherein n is an in...
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JP3769874B2 |
To simultaneously form plural rims, to form both webs and a connecting part, moreover to unnecessitate a slitting roll and to prolong the life of an extruding roll by squeezing a tube stock in the axial direction of the tube stock while ...
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JP2006102795A |
To provide a manufacturing method of a drive plate by which the drive plate providing high dimensional accuracy is obtained.Since toothing by rolling is applied to the outer peripheral part 16 of a disk-like base stock 18 where is projec...
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JP2006102774A |
To provide a thickening formation method and apparatus by which an unintended swelling part is not formed inside the thick part of a disk-like base stock.Since a projection fitting stage ( (c) in Figure ) where an annular projection 36b ...
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JP3767308B2 |
To reducing costs by reducing the number of machining steps without lowering the rigidity of a drum. First spline teeth 73 cup-shaped and axially extended are formed in plural places in the circumferential direction of an inner periphera...
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JP3768588B2 |
To obtain a chip for welding which can lengthen the electric supply length of an electrode wire by forming a tapered part together with a polygonal shape with forging after cutting a through-hole in a round rod and successively, applying...
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JP2006095584A |
To provide a spline forming apparatus in which a forming apparatus is miniaturized and made inexpensive by eliminating wear in the shaft part of a rolling roller.This apparatus has: an inner die member 22 which is attached to a movable-s...
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JP2006095554A |
To provide a method for producing an inner ring 3a constituted of a radial ball bearing, obtained at a low cost while securing the sufficient precision.A high precise blank 8 shown in (A), is formed as the inner ring 3a shown in (F) thro...
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JP2006090657A |
To provide a heat exchanger tube of small diameter with excellent heat exchanging efficiency, and a heat exchanger.In this heat exchanger tube, the ratio W2/W1 of a width W2 of a bottom part of a protrusion on the inner surface of the tu...
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JP2006090407A |
To provide a method of manufacturing a low-cost bearing ring as part of a radial ball bearing which does not require so high rotating accuracy, while securing practically sufficient accuracy.The bearing ring such as an outer ring 2a as p...
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JP2006083963A |
To provide a hollow power transmission shaft to be hardly cracked when machined by improving the strength of a pipe when machined.Normalizing treatment is applied to the pipe P formed of a steel material for improving the machinability o...
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JP2006075453A |
To attain deep shaving while protecting the skin, to improve the stability of a blade body, and to avoid a cut in the skin caused by the side slip of the blade body to the skin.A cutting edge part 6 forming an elevation angle to the skin...
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JP2006075925A |
To provide a method of machining the inner peripheral surface of a circular hole, uniformly removing swells formed at the edges of recesses in forming fine recesses on the inner peripheral surface of the circular hole of a workpiece.Honi...
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JP3758051B2 |
To provide a manufacturing method of a hollow cylindrical body to improve the precise processability and the productivity of parts of composite shape. A collar 2 made of stainless steel sheet is rectangular before binding. The collar 2 i...
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JP3757188B2 |
To increase the number of cycles while evading drawback in manufacturing technology and tool exchange by improving a cross rolling machine having a form described at the begining. A pair of rolls are mechanically connected to each other ...
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JP3759032B2 |
To improve the easiness of the production of a metallic vessel for treating a wafer, and to increase the service life of the vessel. The vessel (30) in particular has a cylindrical wall (32), and consists of a light alloy used as a react...
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JP2006068771A |
To provide a form rolling device capable of preventing or reducing a deflection of a work during the form rolling, and easily drawing a work set before the form rolling and drawing a work after the form rolling, a motor having a thus-for...
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JP3119876U |
To remove a dent or the like in a screw thread of a bolt material with a head, and at the same time, detect a crack in the head of the bolt material to determine a defective product. A roller rolling die 4 and the low- La arcuate fixed r...
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JP3119877U |
To remove dents and the like in a screw thread of a bolt material with a circular head, and at the same time, detect misalignment of the head of the bolt material to determine a defective product. On the fixed rolling die 5 side of a scr...
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JP2006064062A |
To improve the strength of a spline formed on a shaft end portion by rolling.In a power transmission shaft formed with the spline 1d1 on an outer-periphery surface of the shaft end portion by rolling where the shaft end portion is rolled...
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JP2006055894A |
To provide an apparatus for forming a ring body with which the burn-seizure of a work can be prevented without bringing about the increase of number of parts and the complication of a structure by forming a resistance-reducing layer for ...
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JP3751794B2 |
A machining tool for manufacturing a radial bearing, and a manufacturing apparatus and a manufacturing method using the machining tool are provided. The machining tool includes an inner surface finishing tool to finish an inner circumfer...
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JP3751792B2 |
A gear part and method is provided for forming a gear part, in which a circular blank-like workpiece is fixed in a flow-forming machine in a radially inner area, the circular blank-like workpiece is rotated, at least one roller is infed ...
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JP3747625B2 |
To prevent the wrinkle or flaw of a product by cutting the side part of the thread profile for one circumference and end-mill machining it in to a form of a smooth thread form continuously increased in height. A flexible pipe rolling die...
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JP3749166B2 |
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JP3747302B2 |
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JP2006043745A |
To provide a method for manufacturing a multi-pitch screw, which has desirable threads and pitches, through rolling.A locus of a general helical screw (having a constant lead angle) is formed using constant pitch projections 610, 620 of ...
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JP3746855B2 |
To provide a form rolling flat die and rolling method capable of precisely working the both side shapes of the rolling surface of a tooth profile or the like and the sork easily to collapse without using plural form rolling machines, plu...
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JP2006035298A |
To provide a titanium alloy bolt excellent in shape-precision, formed in a net-shape with a cold-forging, and its producing method.This titanium alloy bolt B is composed of β-type titanium alloy and continues a bolt head 30 with a shaft...
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JP3744082B2 |
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JP3744390B2 |
To provide a working device having a high supporting rigidity of a guide rail for supporting an elevating base that slidingly moves in a vertical direction, i.e., a working device having superior durability of the entire device and excel...
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JP3743248B2 |
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JP2006026733A |
To form a necking part in the boundary part between a spherical head and a hollow shaft portion easily and accurately while making hollow shaft-shaped parts light in weight by manufacturing the hollow shaft-shaped parts having the spheri...
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JP3740873B2 |
To provide a method for manufacturing a winding stem for a timepiece that can further reduce costs by performing rolling machining directly from a base. When a winding stem 20 is to be manufactured, a diameter dimension D1 of a base 1 is...
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JP3741504B2 |
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JP3738224B2 |
To provide a gear shaft having a spline and a gear which can be easily assembled in assembly work, and a flat die for form-rolling the gear shaft. An extension part 15 which extends in the axial direction from a tooth bottom end 15a and ...
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JP3738218B2 |
In the present invention, a thin and disc-shaped blank made of steel plate is used. The present invention provides a method of manufacturing a sheet metal member comprising a circular base plate, and an annular projection bulged from at ...
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JP3739154B2 |
To provide a manufacturing method for a parts having a cylindrical part with internal tooth, in which a complicated device is not necessary and the working time is short and noise is not developed and the good dimensional precision is ob...
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