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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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 ...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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, ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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JP2007167899 |
To provide a rolling-forming method with which the variation of a phase in a rolling die caused by a backlash of a speed reducer is removed by using a correcting movement with a simple program.In the rolling-forming method for forming a ...
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JP2007160364 |
To provide a squeeze roller which is free from breakage caused by forming load from a material, and free from biting of product chips left between side face forming wheels and a top forming wheel.The squeeze roller 1 having a groove 4 fo...
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JP2007155120 |
To provide an oil reservoir forming method for a lubricating mechanical element for efficiently forming a number of oil reservoirs contributive to forming an oil film.In the oil reservoir forming method, a spiral grooves 2 is first engra...
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JP3969001 |
To provide a method of manufacturing a nut which will not bring about cutting of metal flow, by forming a ball-rolling groove in a nut for a ball screw, being independent of cutting, and eliminates the need for finishing the ball-rolling...
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JP2007144504 |
To provide a method for manufacturing a helical gear in which the manufacturing efficiency in terms of the yield of raw material and the times of processing work, is high and the working precision is high even in the case that the axial ...
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JP3968165 |
To provide the heteromorphic cross section without the rough surface on the back surface side at the boundary of the thick and thin parts by forming the cross section trapezoid protuberance on the back surface of the thick part. The hete...
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JP3968215 |
To manufacture a superconducting high frequency acceleration cavity with no bead line by welding without any necessity of labor and time for manufacturing a surplus metal mold. A plate material 2 having superconductivity covers over the ...
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JP2007136517 |
To provide a tooth flank form rolling apparatus and a tooth flank form rolling method capable of correctly aligning the circumferential position of either a tooth valley part or a tooth ridge part in a tooth flank to the circumferential ...
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JP3963571 |
To provide a manufacturing method of a joint pipe preventing the generation of burr. The forming method of the joint pipe without generating the burr is composed of (a) a process, in which the diameter of a pipe base stock is enlarged, (...
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