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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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JP3963526 |
To simplify and economize the system and to solve the backlash problem by using an air cylinder for sliding the body of the pipe terminal processor. A feeding device 40 of the pipe terminal processor is as follows: The front bar 41 and t...
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JP2007132398 |
To provide a threaded fastener capable of significantly improving maximum fastening torque and holding force which is unlikely to loosen, a manufacturing method of a male threaded fastener and rolled dies.In the threaded fastener, a foll...
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JP3960845 |
To provide a form rolling die for forming a male screw and a deep groove in one step without deforming threads of the male screw, and manufacturing a spiral screw with deep groove at a low cost. The form rolling die comprises a fixed die...
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JP3962350 |
To provide a method for forming an internal gear which does not produce an underfill in an inward corner of a cup-shaped stock, in plastic working from the disk-shaped stock. The method comprises a first step in which the disk-shaped sto...
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JP2007125677 |
To provide a method for manufacturing a gear capable of suitably performing engagement of a spline in the method for manufacturing the gear having the spline formed on an outer peripheral surface of a hollow main body and a through hole ...
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JP3958929 |
To provide a manufacturing apparatus for a separator which can be applied to a solid polymer fuel cell of low-cost and high durability type, and which can be subjected to a press work. The manufacturing apparatus for a solid polymer fuel...
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JP3951468 |
To reduce cost of a forming device and an internal tooth member, and get the forming device and the internal tooth member smaller in size. The device has a mandrel 78 a fixed member for fastening a raw material at a front edge of the man...
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JP3952574 |
To prevent an underfilled work material from being sent into the last process flow. In the sizing device 1 for cold gear rolling wherein a charging chute 2 to charge a work material 6 and a sizing die 3 are arranged nearby the top end pa...
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JP3952738 |
To obtain a connector which can be manufactured inexpensively, having an improved sealing-property, and provide further a manufacturing method thereof. A cylindrical part is formed in one end of the connector 20. An annular groove extend...
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JP3955198 |
To provide a device for relieving two-way thrust caused by 'a walk phenomenon' generated in a work, that is, movement of the work in the axial direction caused after start of rolling of the work in a screw, a helical gear, or a worm. The...
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JP2007111701 |
To provide a worm form-rolling device and a worm form-rolling method capable of accurately finishing a worm formed on a shaft by rough working.A thread-rolling device 21 has a 1st roll die 23 and a 2nd roll die 24, and subjects a worm, w...
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JP2007111740 |
To provide a method for forming a screw thread capable of producing a screw thread in a ball screw mechanism at a lower cost, and to provide a screw thread formed thereby.The outer diameter of a diameter-shrunk part 10a is gradually redu...
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JP2007105838 |
To provide an abnormality detection device capable of early detecting abnormality generated in a machining tool of a machining device.The abnormality detection device 1 for the machining tool 13 is constituted so as to have a vibration s...
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JP3944818 |
To provide a new manufacturing method constantly and massively manufacturing stable and high-quality level variable vanes without using any cutting and welding. This manufacturing method for the variable vane 1 is characterized by having...
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JP3942243 |
To provide a rolled screw to prevent the occurrence of frictional resistance during access of a blank part and to effect smooth screw-in operation, in a rolled screw wherein a shaft part is provided at one with a head part and at the oth...
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JP3941219 |
To prevent buckling in the circumferential part of a base stock in the case of forming the prototype of a rim from a thin disk-like base stock with a large diameter, in the manufacture of a pulley by roll forming. A thin disk-like base s...
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JP2007090387 |
To provide a method for manufacturing a brake piston without developing the burr into a groove part formed on the outer peripheral surface in the edge part at the opening hole side.A bottomed cylindrical blank W whose opening end part W1...
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JP3937631 |
To manufacture a ring-like product having a complicated sectional shape such as a bearing lace with a seal groove, in high quality and efficiently. This method uses a forming roll 1 for outer face processing, a mandrel 2 for inner face p...
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JP3938429 |
To enable screw rolling while assuring a fixed diameter size without being affected by a blank diameter and hardness by pressing a moving headstock in a direction nearer a stationary headstock and interposing a variable stopper member be...
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JP3938430 |
To provide a screw shaft manufacturing method which facilitates assembly of a nut onto a screw shaft by means of through rolling and which improves productivity of thread transfer mechanism. In this manufacturing method, a thread part 2 ...
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JP3935348 |
To provide a metallic heat exchange pipe having a fin (3) integrally formed on the outer face of the pipe, having a leg (13) thereof extended radially from the wall (18) of the pipe and having a hollow part formed by hollowing out the gr...
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JP3936185 |
To provide a form rolling tool which prevents any wear of a form rolling profile surface and maintains the slip-proof effect executed on the form rolling surface for a long time. A large number of small projections 4 are formed on a surf...
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JP2007078052 |
To provide a pipe connection device enabling the easy piping operation and eliminating the risk of pipe extraction after the installation of the pipes.This pipe connection device for connecting water supply and sewerage pipes connected i...
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JP2007075874 |
To provide a tapping screw form rolling die capable of forming a sharp tip by cutting off the tip of a rivet.A fore-end tip cut-off face 4 extending from a lower end of a tip reducing face 3 of a thread form rolling face comprises a retr...
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JP3928146 |
To provide a roll forming device for a ring-like stock which generates no burr on the end surface of ring-like parts and moreover works the stock into a product having excellent working precision by pressurizing the end sur face in the a...
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JP3927793 |
To improve the strength of a thread portion of a worm, and to greatly reduce the cost of forming the thread portion by forming it only by rolling without cutting by designing the cross section of the tooth bottom of the thread portion of...
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JP3927813 |
To provide a form rolling tool with which the occurrence of a form rolling defect (roll over) at the form rolling end part of a material to be form rolled is prevented and a tooth form is accurately form rolled on the material to be form...
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JP3926130 |
To provide a thread rolling head for a tapered thread of a pipe which reduces amount of a resin coat removed prior to thread rolling for a resin coated pipe as well as reducing wear amount of both an automatic stoppage mechanism and a th...
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