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JP2003260532A |
To provide an apparatus and method for manufacturing a bolt which can reliably and efficiently manufacture a double screw bolt in which double screw threads different from each other in pitch are provided so as to cross each other.A coar...
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JP2003254436A |
To provide a grooving method for smoothly grooving a surface- hardened rod without causing a significant strength reduction.On opposite sides of rolling rollers 22A and 22B mounted on respective rotary shafts 21A and 21B of a rolling mac...
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JP2003525747A |
The invention relates to a method for producing a shaft (22), and an apparatus containing such a shaft (22), in particular an armature shaft (22) of an electric motor-driven drive (12) that is brought to a nominal dimension (44). The sha...
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JP2003245745A |
To provide a rolling machining device for cold-rolling a ring body by a further simplified structure, which can highly accurately and rapidly perform the press-machining of the ring body inserted into a mandrel roll.In the rolling machin...
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JP2003525485A |
A machine tool system ( 30 ) includes a tool ( 32 ) for cold forming a workpiece over an operating cycle and a sensor device ( 40 ) which senses each operating cycle of the tool ( 32 ). Identification data for the tool ( 32 ) and operati...
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JP2003236639A |
To provide a manufacturing method for a boiling heat transfer pipe for stably and accurately manufacturing the boiling heat transfer pipe having high heat transfer capacity with the small number of tools even in the case that a cooling m...
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JP2003232326A |
To improve a loosening preventing bolt in which a single bolt is screwed into a stuffing nut and a loosening preventing nut, and further to improve a manufacturing method therefor or the like.A loosening preventing bolt obtained by formi...
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JP2003230928A |
To eliminate the rise-up of a chamfered part to tooth faces and burrs which occur at the chamfered part of the end face of a gear or the like, in form-rolling gears, splines or the like by a form-rolling flat die.In a form rolling method...
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JP2003230927A |
To provide a manufacturing method for a rough shape material for a bearing ring which solves the problem of a long machining time required for a grinding process to remove the quenching strain of a ring material which is cold-rolled and ...
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JP3436724B2 |
To prevent interference to screwing of a bolt due to paint film or spatter adhered to an internal threaded part when screwing the bolt on the internal threaded part. A complete thread 5A screwing to the internal threaded part is provided...
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JP3438472B2 |
To eliminate generation of a grooveless metallic tube when grooving is started, to reduce the drawing force, and to prevent the metallic tube from being broken. A plug unit 13 is inserted to the prescribed position into a metallic tube 1...
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JP2003225726A |
To provide an automatic work feeder of a form rolling machine in which a work rest need not be changed even when a rolling die is re-ground to reduce its diameter.A plurality of claw bodies 20 intermittently divided by a divider 4 are di...
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JP3435110B2 |
To provide a cold forming apparatus capable of eliminating friction seizure of a work side face due to left/right oscillation, fixing a machine size regardless of a product outer diameter and eliminating clogging of a product when formin...
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JP3436622B2 |
To heighten the synchronization of a roller die so as to provide good form rolling for an article to be machined by providing a torque control means for equalizing one torque to another by comparing the detection results of both torque d...
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JP3436387B2 |
PURPOSE: To provide a method for manufacturing an outer race for ball bearing enable to obtain the outer race for ball bearing having excellent durability. CONSTITUTION: After heating a columnar state billet 1 having a first prescribed h...
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JP3435314B2 |
To obtain forming capacity twice as that at the time of using a forging roll having one set of manipulator tongs by simulatane-ously rough-forming two pieces of works with a first roll set and first manipulator tongs and a second roll se...
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JP2003220438A |
To provide a method for easily and accurately forming a coarse thread and a fine thread on a looseness preventing bolt.This method comprises forming the coarse thread 4 for engaging with a locknut 2 and the fine thread 5 for engaging wit...
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JP2003211901A |
To provide a manufacturing method of a wheel for an automobile remarkably reducing the number of processes, simplifying a manufacturing mechanism, and extremely improving productivity and a yield.The manufacturing method of the alloy whe...
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JP2003213388A |
To provide a method of producing a shape-memory alloy bolt with an outer diameter of ≥3 mm which has a shape recovery finishing temperature of 60 to 110°C and a shape recovery rate of ≥30%, and also has high strength.In the method o...
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JP2003211245A |
To reduce frequency of re-machining the outer circumferential face of a fin form-rolling roll and/or receiving roll, to improve productivity and to enhance stability in a fin form-rolling process.The method includes a process of form-rol...
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JP2003522647A |
The invention concerns a device and a method for continuous pressing of a plastically deformable blank into a three-dimensional section with a predetermined cross-sectional area, comprising a substantially cylindrical, fixed die, an open...
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JP3429711B2 |
To precisely and efficiently form outer teeth and inner teeth to a cylindrical part in a synchronized phase by pressing a mandrel with tooth grooves to the peripheral faces respectively arranged to the inside/outside of a cylindrical par...
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JP2003205336A |
To provide a manufacturing method for realizing industrial mass production of austenitic stainless steel high strength bolts having a tensile strength of 1,100 MPa or above.The method of manufacturing the high strength stainless steel bo...
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JP3429157B2 |
To produce a large size ring high in dimentional precision by applying heat treatment to a ring in which a groove is to be formed on inner/outer diameter faces in the peripheral direction by cold rolling a steel tube extruded by a medium...
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JP2003194098A |
To provide a device for forming grooves in a friction layer.This device for forming grooves in a friction layer is provided with rotating devices 1, 11, 21, and 31 having at least one roller flange 7, 17, 27a...27f, 37a...37c to roll in ...
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JP2003191025A |
To provide a device and a method for forming a side surface of a work with high accuracy.This forming device comprises a first roller 23 group disposed around a work feed shaft 12, and a second roller 33 group disposed around the work fe...
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JP3423272B2 |
To provide a tool and a method for continuously form rolling a dynamic pressure groove in which a form rolling ball of the tool is constantly turnable when it passes through an inner circumferential surface of a bearing hole in a dynamic...
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JP2003184222A |
To provide a coil-spring-containing reinforcement joint that can reduce the processing cost using a low cost processing method and much reduce the cost through mass production, and absorb variations of the inner surface dimensions of a m...
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JP2003184874A |
To enable a rolling process of a ball rolling slot to a guide rail material without producing function deterioration of a side seal and endurance of the guide rail, etc.In the rolling dies for the linear guide providing a projection sect...
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JP2003181584A |
To provide a forming method for an internal gear using internal stress generated by cold plastic forming to enable enhancement in both the strength of a forming material and the process yield of the forming material for use, as well as t...
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JP2003181533A |
To efficiently form fins having high heights.A fin form rolling roll 4 comprises roll members 30B to 30E having fin form rolling grooves 40 formed in zigzag shapes on an outer peripheral surface in such a manner that the outer peripheral...
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JP2003181585A |
To provide a die forming device capable of improving forming accuracy for a strip material by reducing the wear of a base roller.In the device, both a topside die 12 and a bottom work roll 4 depress an intermittently-running strip materi...
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JP3421062B2 |
PURPOSE: To provide a grooving method by which a groove in a complicated shape is easily formed. CONSTITUTION: Projected parts 1a, 1a by which a prescribed pattern for grooving is structured on an outer periphery is formed; a groove form...
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JP3420384B2 |
PURPOSE: To attain stable roll working by allowing a work roll and a backup roll to face each other on the center line of a pressurizing head, installing them attachably/detachably to the inner side face at the tip end of the anti- press...
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JP3418180B2 |
To provide a manufacturing method of a ring gear which has short manufacturing time, is excellent in yield of the material, and is capable of reducing the manufacturing cost. A first intermediate product 5 is obtained by forming a bottom...
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JP2003166514A |
To provide a blind rivet connecting so that one fitting member can mutually rotate around the other member to be fitted, with a gap secured between a plurality of fitting members, in a low cost.The blind rivet 1 is constituted of a hollo...
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JP2003164938A |
To detect accurately and securely a defect in thread rolling due to subduction.In a thread rolling machine, a screw stock 10 is introduced between a fixed die 11 and a moving die 12, with the head 10a projecting by a given height and the...
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JP2003165033A |
To shorten manufacturing time of a metal shaft provided in a printing mechanism and to reduce its manufacturing cost.Plural lines of circumferentially extending annular grooves are formed by rolling in an outer circumferential wall of a ...
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JP2003160812A |
To provide a ball screw for a wheel-steering, which can shorten a cycle time in heat treatment and improve precision after the heat treatment.This ball screw has a groove formed in a ball screw shaft 2, of which the axial span 17 covers ...
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JP2003154430A |
To efficiently manufacture a screw part 11b with high efficiency and accuracy while preventing generation of any top roll.A hollow part 11a is formed on a part having at least a screw part 11b in a shaft-like base body 11, and the shaft-...
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JP2003151715A |
To improve a forming method of an undercut for preventing a dropping off of a contact spring accommodated in a recessed part.The method for manufacturing a connector is provided with a first terminal having a projected contact part; a se...
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JP2003145243A |
To provide a method and an apparatus for roll-forming by which a long wire rod is continuously roll-formed by transporting it automatically while roll-forming it.The method for roll-forming comprises: a loading step for rotatably support...
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JP3408151B2 |
To provide a forming device capable of profitably forming a metallic product which is formed by concentrically and integrally forming a cylindrical portion having a prescribed dimension and shape and having an outer surface at a side cor...
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JP3405129B2 |
To provide a spinning method and a working roll used therefor capable of spinning without annealing by suppressing work hardening in spinning. In this spinning method by which a disk work W fixed to a tip face of a mandrel 7 is formed in...
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JP2003127598A |
To provide a patterned metallic plate which can exhibit design of various kinds of fine uneven patterns while making use of a gloss of a relatively hard metallic plate and a manufacturing method of the plate.A titanium plate 2 is passed ...
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JP3403687B2 |
To secure strength by eliminating the flow line cutting of the metallic structures of a first tooth profile and a second tooth profile, to reduce vibrations and noises by securing the concentricity of both tooth profiles, and to extend t...
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JP3401164B2 |
To provide the sintered gear stock in which burrs generated in the form rolling when the form rolling allowance is increased can be peeled and removed from the form rolling area, inconvenience of damaging the tooth face by biting the bur...
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JP3401848B2 |
PURPOSE: To enable a stable grooving by providing plural second rolls which, receiving a rotational force by coming into contact with plural first rolls, are rotated while revolving on the second circular locus with a radius smaller than...
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JP2003119518A |
To provide a ball screw shaft with a little curve occurrence after heat treatment, gash lead error and pitch error, after forming thread grooves, without lowering the workability, by improving a material hardness of the screw shaft and a...
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JP3397746B2 |
To provide a technology capable of efficiently manufacturing a metal product having a thick part integrated to the outer periphery of a thin metal disk at a low cost and preventing generation of buckling in the case of forming the thick ...
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