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Patent Searching and Data


Matches 801 - 850 out of 4,208

Document Document Title
JP2008291950
To restrain curving of a shaft body when a male screw with an odd number of threads is formed at a chamfering part and a thread part to less than an allowable upper limit.A raw material W of a planetary shaft body comprises a body screw ...  
JP2008284571
To provide a female screw machining tool and a method for forming the female screw by which the machining resistance in the case of forming a multi-stripe female screw can be reduced.The female screw 24 can be formed on the inner periphe...  
JP2008281142
To provide a screw shaft for a ball screw mechanism and a manufacturing method for screw shafts capable of suppressing the incomplete thread part at low costs.Even in a case of forming a large diameter flange part 1b adjacently to a male...  
JP2008279481
To provide a manufacturing method which can stably form the inner race and the outer race of a rolling bearing.A partially fabricated item 3 includes a large diameter outer race portion 4 and a small diameter inner race portion 5. The ou...  
JP2008279486
To provide a method for manufacturing an outer ring for rolling bearing by which a rolling-formation is attained in a large diameter-enlarging ratio without causing crack in a ring-like base stock and a high precise outer ring for rollin...  
JP2008272828
To provide a working method for making the end part of a tube thin precisely and stably without depending on machining and being accompanied with a reduction in the outer diameter.After holding the basic end part of a tube stock 10 to a ...  
JP2008275019
To provide a fluid bearing device manufacturing method for easily forming a lubricating fluid reservoir part which has high dimensional accuracy without depending on a complicated die assembly or additional lathe machining.A groove rolli...  
JP2008266694
To provide a plastic working apparatus which can prevent the quality of a workpiece from degrading due to the oxidation of the surface and the like and simultaneously can give a desired heat treatment effect to the surface of the workpie...  
JP2008264821
To provide a method for manufacturing a pulley for a clutch, by which method, a pulley having a required shape can be easily worked, and a working time can be shortened, and further its manufacturing cost can be reduced.In the method for...  
JP2008238215
To provide a method for manufacturing a rolling product with helical projection capable of reducing waviness along a flank line direction.A raw material is subjected to rough form rolling, and then finish form rolling. In a rough form ro...  
JP2008229665
To provide a method and an apparatus for form-rolling a gear which are suitable for extending the service life of a roller die and shortening a forming cycle time.The method for applying the form-rolling to the outer peripheral part of a...  
JP2008221236
To provide a rolling-form die, wherein in the case of introducing a blank, the slipping of the blank is simply prevented to improve the processing accuracy of a male-screw.Related to a segment die 20 in a rotary-type screw rolling-form d...  
JP2008221272
To provide a multiplex screw form-rolling die, improving the durability of a screw-working part near the edge surface of the die body, and a method for manufacturing a multiplex screw bolt using the die.In the multiplex screw form-rollin...  
JP2008221228
To provide a rolling-form die, wherein while securing the rolling-formed precision of a screw with the rolling-form die, the working time of this rolling-form die is shortened to attain the manufacturing cost reduction.A round die 10 has...  
JP2008200710
To provide a method for manufacturing rolling dies, which method can reduce a time for rolling toothed surfaces for rolling, and can reduce a manufacturing cost.When rolling dies for rolling a dual thread having two different leads are m...  
JP2008188599
To provide a method of manufacturing a refrigerant tube with detecting function excellent in heat exchanging capacity without lengthening the piping of a heat exchanger.In a step where a medium-diameter tube 21 and a small-diameter tube ...  
JP2008173674
To provide a method of inexpensively manufacturing a highly precise thin-walled ring such as a seal ring to be incorporated in a shell needle bearing, which is thin in wallthickness and is necessary to sufficiently ensure the dimensions ...  
JP2008168315
To eliminate the insufficiency of the steel blank on the end surface and the surface part of a ring blank so as to prevent the occurrence of burrs on the end surface and the riding up of the blank on the surface part in the case of manuf...  
JP2008155229
To excellently transfer the shape of the roughened working surface of a transferring body side to the workpiece side.A circular rod shape die 37 is locked to the output shaft 351 of a motor 35 mounted on a fixed base 34. The roughened wo...  
JP2008149327
To make it possible to perform roll-forming processing with high accuracy with a compact and low cost constitution.A roll-forming apparatus 10 includes a first mandrel 30 to be fitted to a first spindle 18 of a main shaft table 14, and a...  
JP2008138235
To provide a method which shows an excellent effect of having reformed a rolling forming face of a rolling die, by subjecting the rolling die to all steps of shot peening treatment, nitriding treatment and oxidation treatment.This rollin...  
JP2008126303
To provide an apparatus for working fine recessed parts with which the fine recessed parts are formed with regular arrangement in the arrangement in a direction along the axial line of circular surface to be worked and the fine recessed ...  
JP2008119753
To provide round dies for form rolling, which reduces the number of retoolings in form-rolling a screw.A pair of round dies 20 and 30 for form rolling are respectively column-shaped and peripheral surfaces thereof are respectively separa...  
JP2008114346
To provide a finishing method for realizing improvement of machining efficiency by reducing dispersion of depths of finally obtained fine recessed parts as much as possible when removing swollen parts generated around the fine recessed p...  
JP2008110360
To provide a method for manufacturing metal balls, capable of efficiently manufacturing the metal balls without heating a stock.The method for manufacturing metal balls enables the molding of the metal balls from a long-shaped material S...  
JP2008106827
To realize a manufacturing method capable of providing an outer ring for a radial ball bearing capable of securing practically sufficient accuracy even when finishing after hardening treatment is omitted.An intermediate material 10 for t...  
JP2008105049
To provide a form-rolling apparatus comprising a superior pitch adjusting device 8 capable of quite easily adjusting pitches by only engaging a reference engaging part 4 provided previously on a rolling dice 2 by means of rotating a spri...  
JP2008087004
To provide a method and an apparatus for manufacturing an inner grooved tube having internal fins having high height and large lead angles at high productivity.The method includes: a diameter reducing step in which the diameter of a tube...  
JP2008080399
To provide a form-rolling apparatus, which can conduct mechanically position correction of a blade tool in simple manner, and a position correction method of a form-rolling die.The form-rolling apparatus comprises a frame, a slide member...  
JP2008073731
To provide a flat die for roll forming, which can improve the torsional strength in a raising part and can realize roll forming of a high-strength spline or serration, and a method for manufacturing the flat die for roll forming.In the f...  
JP2008068285
To provide an apparatus and a method for working fine recessed parts, wherein fine recessed parts can preciously be formed on the outer circumferential face of a columnar workpiece or on the inner circumferential face of a circular hole ...  
JP2008068363
To provide an inner surface machining tool which accurately machines an inner surface of a hole with a small diameter, and is simple in structure and easy to downsize.An alignment mechanism 30 for making alignment by deflection occurring...  
JP2008068287
To provide a method for manufacturing a forming roller for a pulley by which the strength of a forming part is increased to extend the service life of the forming roller.On the outer circumferential face of the forming roller 1 for a pul...  
JP2008062274
To provide a method of machining a screw capable of precisely machining a female screw by a screw rolling process.A prepared hole 2 is formed with a punching-out work to a platy metal; then a prepared hole wall is formed with a shaving w...  
JP2008055494
To provide a flow forming method and a flow forming apparatus which hardly generate clacks in a thin part of a workpiece even when thinning the workpiece.It is repeatedly performed to enlarge the diameter of a disk part 21 by a first for...  
JP2008049384
To provide a method of form-rolling a gear by which high-accuracy crowning shape is formed on a tooth surface while suppressing manufacturing cost low.The method of form-rolling a gear is provided with a stage where a workpiece 15 includ...  
JP2008043962
To provide a rolling machine which can improve the stability and accuracy of a rolling operation by reducing the change of the distance between opposed frames by reducing the displacement of outer tie bars by forming the outer tie bars s...  
JP2008043961
To provide a rolling apparatus which can accurately carry out a rolling operation by suppressing the variation and increase of the pitch error of a rolling tool even if a ball screw shaft has thermally expanded.In the rolling apparatus, ...  
JP2008036706
To form a pair of cracking grooves on the inner peripheral surface of the big-end hole of a connecting rod surely and at low cost.A pair of rotary form-rolling means 30a, 30b which are pivotally supported in approximately parallel in the...  
JP2008025620
To provide a screw member which prevents turning-in from occurring in a screw bottom part in a stress concentrated portion, even when rolled by a rolling die with one part lacked in a top part of a screw thread, in screw rolling work, an...  
JP2008023541
To provide an apparatus and a method for working fine recessed parts by which the fine recessed parts can formed be on the outer circumferential surface of a workpiece in order to make friction low.The apparatus for working the fine rece...  
JP2008025780
To provide a manufacturing method of a cage for a cross groove type constant velocity universal joint, which omits cutting work of an inner diameter face side, has superior productivity, and reduces manufacturing costs.A short cylindrica...  
JP2008023596
To provide a method for processing a minute concave portion that can form the minute concave portion capable of effectively reducing sliding resistance on an inner peripheral surface of cylindrical hole of a work, with a high precision a...  
JP2008018446
To provide a rotary sequential hot forging apparatus which can improve and stabilize forming quality by preventing a temperature drop of a blank.The rotary sequential hot forging is carried out by setting the blank W preheated by a heati...  
JP2008012559
To provide a device and a method of working fine recessed parts by which the variation of working depth caused by the wear of a tool and the variation in the hardness of a material to be worked are suppressed.The device of working fine r...  
JP2008012585
To provide an apparatus for machining fine recessed parts and a method for machining fine recessed parts by which both the load applied to a workpiece and the displacement of a working tool are controllable by measuring and calculating t...  
JP2008012549
To provide an apparatus and a method of working fine shapes by which the fine shapes can be worked with high accuracy by restraining protuberance in the periphery of a worked fine shape, and a sliding member.The apparatus of working fine...  
JP2008012577
To provide an apparatus and a method of working fine recessed parts by which it is possible to control the pattern and position of fine recessed parts formed on the outer peripheral surface of a material to be worked and it is also possi...  
JP2008006443
To provide a form rolling tool for spline machining and a manufacturing method therefor, wherein the strength of machining teeth is secured and the durability can be improved and the tool can be manufactured at a low cost.A bristle brush...  
JP2008006452
To improve the accuracy of a spline to be formed into a workpiece while suppressing cost from rising.This apparatus for form-rolling outer spline is provided with: a workpiece-stem 3 integrally rotated with a workpiece 2 being the workin...  

Matches 801 - 850 out of 4,208