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Patent Searching and Data


Matches 751 - 800 out of 4,208

Document Document Title
JP2009241106
To achieve technology capable of more suppressing deformation of a material than a conventional technology even when increasing processing speed of a clutch part and making improvement of production efficiency and improvement of processi...  
JP2009241130
To prevent the generation of a projecting part, such as burr, when the outer circumferential part of a disk-like blank is formed with increased thickness.When a roller 34c for increasing the thickness is approached up to the die-closing ...  
JP2009241107
To provide a technology can facilitate the trimming and increase the rigidity of an opening end after forming a reinforcing part on the opening end of a clutch component.The forming method of a cylindrical clutch component with a spline ...  
JP2009233732
To provide a method of rolling forming a ring-shaped product including a part having complicated shape of an axial cross section and a simple part, by which the occurrence of a burr flaw due to a slip on the surface of the ring-shaped pr...  
JP2009233722
To provide a method for manufacturing a helical gear by which the helical gear can precisely be manufactured.In the method for manufacturing the gear, including a gear-cutting process for forming a roughly-processed gear by applying the ...  
JP2009233705
To restrain the generation of an imperfect screw part and form-rolling-over to the minimum limit, when a male-screw is manufactured by form-rolling.Firstly, in the first process, a small diameter part 95b and a chamfer part 95a connected...  
JP2009214152
To provide a flat die for roll-forming with which even in the case of finely tilting the positional relation of one pair of the flat dies, a strain caused by the elastic-returning of the flat dies for roll-forming is prevented without sa...  
JP2009214880
To eliminate a preparatory process for forming a hollow section and facilitate manufacture of a wheel, in a method of manufacturing a vehicular wheel made of a light alloy and having an annular hollow section on an outer rim.The manufact...  
JP2009214153
To provide a thread rolling apparatus and a thread rolling method adequately ready for the change of the number of revolutions of a roll die to the load fluctuation of the roll die on a thread-rolled workpiece, and capable of enhancing t...  
JP2009208119
To suppress a screw thread of a female screw and formed tooth provided in a screwing part from being deformed in an early stage of forming the female screw when the female screw is formed on the inner peripheral surface of a lower hole b...  
JP2009208135
To provide a method for manufacturing a semifinished product for a ring-shaped holder of a needle roller bearing, which can realize a high dimensional accuracy in cold rolling to eliminate insufficient filling of a steel material into a ...  
JP2009202221
To provide a flat die for rolling working, with which strain due to elastic return of the flat-die for rolling working in a biting inclined tooth part is prevented and tooth-shape working precision including highly precise accumulated pi...  
JP2009195930
To provide an infeed form rolling die with which working of a screw shaft in which the balls are prevented from falling off is easily performed and the screw shaft of a ball screw mechanism which is formed with the die.The balls 3 can pa...  
JP2009197899
To provide a double-row angular bearing having an improved rolling life and reduced costs.The double-row angular bearing comprises inner rings 24A, 24B having inside rolling surfaces 28, 29 on the outer diameter faces, respectively, an o...  
JP2009198004
To provide a welding stud suitable for an automatic and semiautomatic screw fastening process, and highly reliably guaranteeing correct screwing-in of a thread.This welding stud 1 includes a head designed as a welding end part 2, and a s...  
JP2009195963
To make it possible to easily evaluate a fine recessed part which is plastically formed in a workpiece, in a short period of time.This invention relates to a method for evaluating the workpiece, in which the quality of the fine recessed ...  
JP2009195965
To provide an apparatus for working fine recessed parts, by which fine recessed parts can efficiently be formed in a short time while avoiding the non-working zone, with respect to a workpiece having non-working zone at a part on an oute...  
JP2009183956
To surely make matching to a pitch between rolling dies for a short time.A thread rolling machine is rolled by abutting the plurality of rolling dies 20a, 20b, 20c to a rolling blank 1. The thread rolling machine includes: a holding part...  
JP2009180268
To provide a rolling bearing for a pump for preventing pollution of cooling water, and improving durability.An inner ring 8 and an outer ring 7 are formed of a steel pipe material having rust preventive capacity by cold rolling processin...  
JP2009180360
To provide a tapered screw member for securing the area of the end face of a tapered portion for improved sealing performance while holding the strength of the end of the tapered portion, and to provide its manufacturing method for easil...  
JP2009166088
To provide a plastic working method and its apparatus by which the plastic working is performed without bulging the surface of a disk to the side of a pressurizing member and deforming the flange part of the outer side.In the plastic wor...  
JP2009166111
To improve productivity by making the male-screw of a screw-in part by thread-rolling, and to secure suitable outer diameter size in a bolt main body and the screw-in part.In an anchor bolt to be fitted to an existing concrete skeleton a...  
JP2009160631
To form bilaterally symmetrical dog-bone shapes of the edge parts of a web stock without decreasing the operation rate of a production line.An apparatus 11 is directed to form the edge parts into bilaterally symmetrical dog-bone shapes b...  
JP2009144095
To provide a lubricating oil for thread rolling, having good lubricity even at high-rpm and capable of forming threads with slightly recessed apexes, and to provide a thread rolling method using the same.The lubricating oil for thread ro...  
JP2009131864
To provide a thread rolling flat die which is easily detached from the fixing surface of a thread rolling machine after forming threads by rolling.An air injection port 12 is provided on the pressing surface of the tread rolling flat die...  
JP2009131865
To provide a thread rolling flat die which is easily detached from the fixing surface of a thread rolling machine after forming threads by rolling.Grooves 21, 22 are respectively provided along the longitudinal direction of the die body ...  
JP2009131874
To provide a method of manufacturing a ring product, for example, an inner-ring race of a bearing by making fiber flow coincide with a wide annular recessed groove when forming the wide annular recessed groove in the outside diameter par...  
JP2009095883
To provide a method for manufacturing a rolling shaft with a deep groove having thin diameter by using rolling dies, with which a screw shaft with the deep groove and the thin diameter can be manufactured.The method for manufacturing the...  
JP2009064039
To provide a process of making a master die used in manufacturing several thousands of high quality metal products, such as decorative aluminum cans, at high speed.This invention relates to the method for impressing holographic images 16...  
JP2009050905
To provide a method and an apparatus for forming an internal gear by means of which no under fill occurs and consequently a cycle time of internal gear formation can be shortened even when the internal gear is formed by plastic working o...  
JP2009050899
To provide a method for forming a rolled thread which can produce a screw having a small dent at a thread peak without depending on a special rotation number by using non-chlorine lubricant having good lubricity.Rolling is carried out at...  
JP2009050860
To enable to perform in-feed form-rolling even in the case of being a workpiece having large tooth-shape.Dies 11 are constituted with non-truth round-shaped columnar member in the cross section, so that the diameter from the center axis ...  
JP2009039759
To provide a method of manufacturing an outer ring for a rolling bearing by which the outer ring can be stably formed.The method of manufacturing the outer ring for the rolling bearing includes a rolling formation step where an outer rin...  
JP2009039721
To improve the shape precision and the whole rigidity in a crutch hub while reducing a cost required for this formation as much as possible and preventing the lowering of the positional precision in the peripheral direction of each splin...  
JP2009022997
To provide a workpiece supporting mechanism for two-die form rolling which can perform form rolling of a tubular workpiece such as a small-diameter pipe or thin-walled pipe at low costs without a fall or breakage of the workpiece.The inv...  
JP2009022973
To provide a method and an apparatus for manufacturing a stepped deformed cross sectional copper bar material by which the flatness of a thin sheet part 9 can be secured by eliminating the occurrence of waving in the thin sheet part 9.In...  
JP2009012080
To provide an external tooth forming roller suitably used in a cup-shaped gear manufacturing apparatus and method which enable a cup-shaped gear to be manufactured by short-time work and with a small forming power.The external tooth form...  
JP2009012042
To provide a method of manufacturing a can body by which a three-piece can is manufactured efficiently and at a low cost.A can body is obtained by thinning a tubular metallic base stock and, next, cutting it into a prescribed length. It ...  
JP2008307578
To enhance: the productivity without drastically increasing the setting area of a forming machine; and the forming precision of a formed product in a cold roll forming machine.The cold roll forming machine includes a forming roll apparat...  
JP2008307543
To provide a tool for forming screw threads, which tool can reduce the peak value of the minimum energy necessary for forming screw threads.The tool 30 forms multiple screw threads on the surface of a workpiece by being moved relative to...  
JP2008309211
To provide a roller bearing cage manufactured by roll forming while reducing its process load, and also to provide its manufacturing method.In the cage which is an integrally rolled product, flange portions are formed at both ends extend...  
JP2008307583
To provide a die for manufacturing a screw part having improved loosening preventive effect, and a manufacturing method therefor.One pair of flat dies 30, 40 are the dies for applying form-rolling to thread ridges 20 of a step-lock-bolt ...  
JP2008302402
To provide a method for manufacturing an outer ring for bearing by which occurrence of crack and underfill on an outer ring blank can be prevented and a manufacturing yield can be improved.In the method of manufacturing the outer ring 10...  
JP2008302408
To provide round dies for form rolling capable of easily performing form rolling on a plurality of workpieces or the same portion of a workpieces to be form-rolled with one form rolling board, and a form rolling method of round dies for ...  
JP2008302423
To provide a form-rolling die with which production efficiency can be improved by shortening the time for setting a workpiece to be form-rolled onto a die for retaining ring groove.The workpiece 40 is arranged by adjusting a position in ...  
JP2008302403
To provide a method for producing an inner ring and an outer ring of a rolling bearing with an improved yield.A molded object 3 having an outer ring part 4 with a large diameter and an inner ring part 5 with a small diameter, wherein one...  
JP2008296281
To provide a method of working a cylinder such as a damper cylinder, which is excellent in yield, also in workability and by which the inside diameter can be set to arbitrary dimensions.In a method of working the cylinder by which thickn...  
JP2008296279
To provide a roller type forging machine which applies nearly constant pressure to metal blank passing through between a pair of rotating forging rollers, and thereby can almost uniformize diameter-reduction amount of the worked metal bl...  
JP2008290112
To provide a die for form rolling, which has enhanced durability and easily surely manufactures a developing roller having excellent developing characteristics, a form rolling device using the die for form rolling, a method for manufactu...  
JP2008291917
To provide a method for manufacturing a race ring for a rolling bearing capable of preventing burrs in a molding step of inner and outer rings for the rolling bearing, preventing damage of a product due to burrs in the molding step, and ...  

Matches 751 - 800 out of 4,208