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JP2004261853A |
To engage a form rolling tool with a work automatically without impairing the work in the manufacture of a cylindrical gear by form-rolling the work on which teeth are preformed.Rotational speeds of form rolling tools 30, 32 are controll...
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JP3567629B2 |
An internal spline ring having an internal root circle diameter D1 and an internal tip diameter D2 is formed by axially press-driving an externally splined mandrel having an external tip diameter equal to the internal root circle diamete...
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JP3567320B2 |
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JP2004255448A |
To provide a thread rolling die with which thread rolling work is quickly restarted by a simple changing work which saves labor and time for changing a whole die by making only a working part of the die changeable.In the thread rolling d...
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JP2004255387A |
To provide a form-rolling die capable of more shortening a form-rolling period of time in finish form-rolling of the teeth of a gear having a fixed tooth form than heretofore.This form-rolling die 20 for performing the finish form-rollin...
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JP3565889B2 |
PURPOSE: To efficiently manufacture a flexible pipe with partially wave-profile by forming an annular or a spiral groove only to a prescribed range at a prescribed position in the outer peripheral surface while continuously feeding the m...
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JP3565703B2 |
To improve the finish accuracy of a form-rolled surface by finishing a tooth surface to be smooth, and preventing the feed of a work during the form rolling in form-rolling an axial groove such as a serration and spline or a screw groove...
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JP3565939B2 |
PURPOSE: To obtain a manufacturing method for a pulley in which the web part can be positioned in the middle of the boss part. CONSTITUTION: The pulley E is produced by the first process in which a cylindrical boss part 51 and a web part...
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JP3565704B2 |
To provide a round die type form rolling device capable of preventing the temporary increase in the working torque to be applied to a spindle of a round die during the form rolling to prolong the service life of a die, and efficiently ac...
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JP3562244B2 |
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JP3558249B2 |
To provide a forming method of one body type drum, by a short time forming, having highly precise and highly strong inner thread and outer thread while realizing to surely keep a high quality of an article, to prevent a thread from incli...
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JP3557678B2 |
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JP3555751B2 |
To form a part of a board material into a thin shape, and to form the thin part of the board into a trapezoidal shape by rotating a rolling means on the turn table, thereby achieving lightening in weight of the board and reducing the cos...
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JP3554306B2 |
The object of the present invention is to provide a bolt that effectively prevents gouging, seizure and racing between the bolt and nut without the aid of a guide boss and is effective when combined with the case nut. Said object can be ...
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JP2004223520A |
To provide a method for manufacturing an inexpensive and lightweight aluminum wheel capable of solving a problem that the structure of a rim portion of the cast aluminum wheel is coarse and the strength thereof is weakened, and each port...
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JP2004216434A |
To provide a manufacturing method of a metal bar for a commutator which can efficiently manufacture the metal bar having a projected part with a bulged tip and facilitates smooth release of the metal bar from a grooved roll.The projected...
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JP3550642B2 |
To obtain an economical die by mounting and fixing a second holder on a first holder mounted and fixed on a slider, and mounting and fixing the die for roll forming on the second holder. The mounting structure of a die for form rolling c...
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JP2004209563A |
To finish a side surface of a helical groove in a screw-like shaft having high strength to high accuracy at low cost.The method for manufacturing the screw-like shaft having the helical groove 11' has: a step for rough-forming the helica...
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JP3547199B2 |
PURPOSE: To obtain a metallic heat exchanging tube having ribs each extending annularly or helically on the outer surface and provided with a protruding edge in which heat transfer effect is enhanced by making depressions isolated from e...
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JP3547515B2 |
PURPOSE: To eliminate the need for drawing of stock by drawing thread part to the prescribed form rolling diameter after head forming and then executing thread rolling. CONSTITUTION: A bar steel precisely rolled to the diameter larger th...
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JP2004521743A |
A method and an apparatus are described for producing a gear wheel from a powder metal blank ( 1 ) which is sintered and pressed with an overmeasure in the flank and root region of the teeth and which in the region of the overmeasure is ...
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JP3546211B1 |
A method and apparatus for manufacturing a bolt capable of mass-producing a multiple screw bolt such as a so-called double screw bolt at a low unit price, and a thread rolling die for use therein. The apparatus for manufacturing a bolt c...
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JP3543771B2 |
To improve a working precision, to reduce working force and to shorten a working time in a manufacturing method of shaft like parts. When manufacturing a clock winding rod by combining a forging process and a form rolling process, in the...
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JP3546002B2 |
To prevent the deformation of a cylindrical housing in the manufacture or actual use and reduce the leakage of working fluid to enhance working responsiveness. A vane member 5 connected to a cam shaft 1 is housed in the cylindrical housi...
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JP3543913B2 |
To provide a rolling device capable of rapidly and efficiently exchanging a work to be rolled and regulating the clearance between upper and lower rollers without stopping the operation. In a wire rolling device 1 in which a manual handl...
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JP3544357B2 |
To provide a thick forming method capable of continuously thick forming without operating a backward process of a slanted thickened part. To an intermediate component 40 having a thickened part in a state of an outer circumferential part...
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JP3542717B2 |
To prevent generation of a top roll attributable to a chipping in a center of an addendum by forming a preliminary tooth profile by a preliminary forming die, and forming the preliminary tooth profile to a target tooth profile by a finis...
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JP2004181509A |
To provide round dies for form rolling which can reduce numbers of preparation steps for the form rolling of screws and the like.A matching pair of round form rolling dies 20 and 30 have respective columnar shapes. and their outer periph...
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JP2004174504A |
To provide a form rolling apparatus by which a work can be subjected to a correct and exact form rolling to be forcedly rotated synchronously with the rotation of dies.One pair of dies 2 facedly arranged by interposing a columnar blank W...
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JP2004167594A |
To provide a shaft manufacturing method and a form rolling device that can prevent or reduce generation of scratches on the outer circumference of a workpiece (shaft) and that also facilitate setting of the workpiece (shaft).In this form...
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JP2004160468A |
To provide a method for manufacturing bottle cans by which the male screw part for every bottle can is formed into the same quality and at a fixed lead angle without forming a line-like part in the male screw part and also the height of ...
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JP3534117B1 |
[Summary] [Subject] Offer of the production method of the screw 転造 dice used for the manufacture of a multiplex screw bolt like what is called a double screw bolt which has a slack preventing function. [Solution means] The 1st cuttin...
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JP3534303B2 |
To machine a non-rotatable work to form a screw or a projection/ recess by mounting a tool on a rotor via a rack, and rotating the tool, and moving the tool by a pinion mounted on a pinion shaft penetrating a center of rotation of the ro...
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JP3532959B2 |
PURPOSE: To attain a method for working the joint part of a metallic tube by which the weakness of a form rolling method that is inferior in the quality such as surface roughness and dimensional accuracy as compared to cutting work is di...
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JP2004148393A |
To manufacture a worm having a highly accurate tooth surface at a low cost by suppressing the deflection of a supporting member of a round die caused by the reaction force of form rolling load in a manufacturing method of the worm by for...
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JP3530815B2 |
To provide a method for manufacturing a small diameter shaft like member suitable for manufacturing a small diameter member. In manufacturing a shaft like member 2 having a small diameter, at the beginning, a rough shape is formed by a r...
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JP2004144097A |
To provide a turbocharger for preventing a slip of a compressor wheel to a turbocharger shaft.This turbocharger has the compressor wheel 7 installed on one end of the turbocharger shaft 8. A nut 17 is threadedly engaged with an end part ...
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JP2004144102A |
To reduce the leakage of operating oil, prevent the deformation of a cylindrical housing and improve operating responsiveness.The cylindrical housing 8 having a sprocket portion 3 on the outer periphery is formed with sintering. A vane m...
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JP2004514101A |
A ball screw, provided with a spindle, and a nut (13) with a fixed flange (14) surrounding the spindle, located between the spindle and the nut (13). A plurality of balls (4) are provided, and these balls (4) are arranged along a spiral ...
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JP2004136322A |
To provide a method for manufacturing a grooved pulley capable of reducing manufacturing costs by forming a flange portion and a V-groove by form rolling only.A work before roll-forming whose height of an outer casing portion 1a' of the ...
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JP3523673B2 |
PURPOSE: To enable the centering by using a recessed center without needing troublesome center boring, in the case of executing a form rolling at the end parts of a shaft-like member. CONSTITUTION: A recessed center 28 is engaged to the ...
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JP3523114B2 |
To reduce the weight of a movable flange and a production cost by integrating a cylinder part forming a pressure chamber for reciprocating the movable flange and the movable flange by plastic working. This pulley is provided with an immo...
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JP2004122157A |
To reduce manufacturing cost without loss of strength.At least two thickening rollers are applied in a thickening rolling process. For a first thickening roller, an angle to the center line of one side face of a groove formed on its oute...
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JP2004122199A |
To provide a semi-dry form rolling device for performing the flat die form rolling of a shape including spline and gears by applying a trace of mist containing 3-20 cc per hour to form rolling flat dies 1 and 2 by mist nozzles 6 and 7 in...
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JP3519569B2 |
To reduce the price with a simple structure by fitting a mandrel having projections of the prescribed same number as that of a groove shape to be machined on its outer circumferential surface to a working machine, and cutting a recessed ...
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JP3520770B2 |
To improve the working speed and the productivity of a bar having a deformed cross section such as a lead frame. A planetary rolling mill 5 which is provided with a rotor 7 which is rotatable around an axial core 8, plural planetary roll...
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JP3520224B2 |
To provide an inner face working tool of a cylindrical body capable of working a recessed part such as a V shaped groove, etc., to a cylindrical body inner face, and a working method using the inner face working tool. The inner face work...
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JP3517963B2 |
PURPOSE: To eliminate the need for a deburring after turning and to make workability high and a cost low. CONSTITUTION: A cylindrical member 1 which is opened at one end and is closed at the other end in an axial direction and is provide...
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JP3517799B2 |
PURPOSE: To exactly guide the projecting part of a material to be rolled into the groove of a rolling roll by providing a pair of a guide roll and grooved guide roll whose positions are vertically varied and a pair of a grooved rolling r...
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JP2004106036A |
To provide a die-casting product in which even in the case blow hole exists in the inner part of the die-casting product, sufficient strength can be held in a female screw part and the fastening strength with the female screw can be impr...
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