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JP7124891B2 |
With respect to a linear motion shaft in which a rack shaft part and a ball screw shaft part are joined to each other by friction welding, coaxiality of a portion having a rack shaft part and a portion having a ball screw shaft part is i...
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JP7121929B2 |
Provided is a ring-rolled member manufacturing method enabling stabilization of the attitude of the ring material without generating a defect and the like in the resulting ring-rolled member even when the main roll of the ring-rolling de...
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JP7116860B2 |
Provided is a rolling die that increases the durability of a nitrided molded surface. The rolling die (1) includes a tool base material that is made of steel and has a molded surface (2) on which a plurality of working teeth (10) is form...
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JP7115547B2 |
A screw shaft includes a large-diameter shaft portion having a male-side screw portion over the entire length of the outer circumferential surface thereof; a first small-diameter shaft portion arranged adjacent to one side in the axial d...
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JP7109216B2 |
A method for manufacturing a steering shaft of a steering device includes: a reduced-diameter section forming process in which a second-phase member is formed from a first-phase member by forming a reduced-diameter section in the first-p...
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JP7103588B2 |
A formed body of Cu-Al-Mn-based shape-memory alloy according to the present invention comprises a screw portion, wherein the screw portion is a form-rolled portion. A method for producing a formed body of Cu-Al-Mn-based shape-memory allo...
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JP7096115B2 |
Disclosed is a machining tool in which, in respect to machining of a thread part, a thread-rolling tool (130) is configured to be capable of switching between a closed state in which action is taken on a workpiece and an open state in wh...
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JP7095567B2 |
To provide a method by which occurrence of inner crack in rolling can be quantitatively predicted.This method is a prediction method for occurrence of inner crack in rolling for reducing an outer diameter of a work-piece of a round rod s...
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JP2022092911A |
To reduce the possibility that cracks are generated during processing.A toothed cylindrical body formation method includes a cylindrical body formation step S300, and a tooth formation step S302. In the cylindrical body formation step S3...
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JP2022085675A |
To provide a rolling tool holder which can form a thread in a workpiece with high precision.A holder 100 includes: a holding member 110 which holds a rolling tool 1; and a restriction member 120 disposed at the holding member 110. The re...
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JP2022085676A |
To provide a rolling tool capable of restraining frictional resistance between a pedestal and a die when the die rotates.A groove 12a is recessed in a seat surface 12 of a pedestal 10. The groove 12a is a recessed groove with a semicircu...
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JP7079491B2 |
To provide a ring molding device 1 by which even if a set of two annular elements Wo are integrally diameter-expanded in the state that end faces S on a cross section thick side are brought into contact with each other, press molding can...
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JP2022526630A |
The present invention relates to a thread former (1) for manufacturing internal threads in metal workpieces. The threadformer (1) includes a forming section (6) with a common central axis of rotation (7). The forming section (6) includes...
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JP2022046789A |
To provide rollers for forming characteristics at an end of a pipe element.A roller set for rolling and forming a pipe element includes an outside roller engaged with a pipe element at three points so that swinging of the pipe element is...
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JP2022045034A |
To provide a wheel bearing device capable of reducing the weight of a hub ring without using a joint technique.The wheel bearing device includes an outer ring 2 having double row outside raceway surfaces 2c, 2d on the inner periphery, an...
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JP7031802B1 |
A plurality of pressure rolls (33) having an inclined roll central axis (β) are used. While pressing each roll-processed surface portion (34) of the pressure roll (33) against a plurality of locations in the circumferential direction of...
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JP2022032069A |
To provide a rolling tool for machining a gear that can suppress an extra thickness portion from being generated on a tooth plane of a work-piece during rolling-machining and at the same time can perform processing for polishing a range ...
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JP7018136B2 |
Since a sharp crest 40 having a triangular cross-sectional shape is provided in a top portion of a thread ridge 10 of an external thread in the leading portion 24, the thread ridge 18 is easily caused to bite into an inner-wall-surface l...
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JP7019389B2 |
To provide a manufacturing method of a bolt and the bolt capable of uniting improvement of strength and maintenance of non-magnetism by using relatively inexpensive non-magnetic steel.A bolt 1 is manufactured through a drawing process of...
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JP7011852B2 |
To make a female screw and a male screw of a looseness preventing ring closely adhere to each other in not only load side flanks but also loose side flanks, to exhibit large looseness preventing action stably.On the outer periphery of a ...
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JP7007390B2 |
The invention relates to a method for producing poppet valves, the method including: cross-wedge rolling a preform (2), which has at least one disk portion (4) and a shaft portion, to produce a valve blank (10), wherein a diameter of the...
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JP2022014924A |
To provide a rolling round die that can be subjected to rolling processing more smoothly and accurately by further improving a known rolling die.Dies which are placed around a workpiece and apply rolling processing to the workpiece are c...
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JP2022013538A |
To provide a manufacturing method of a wheel for a saddle-riding type vehicle, which can sufficiently improve the mechanical properties of a rim part.A manufacturing method of a wheel (100) for a saddle-riding type vehicle according to a...
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JP2022011150A |
To provide a manufacturing method of a wheel for a saddle-riding type vehicle, in which a clamp mark is not left on a wheel even when flow forming is performed on an intermediate product.A manufacturing method of a wheel 100' for a saddl...
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JP6993826B2 |
To provide a rolling flat die which can be easily engaged with a work-piece.A rolling flat die, which is moved in a rolling direction relatively to a work-piece, and performs finish rolling of a tooth formed on an outer peripheral surfac...
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JP6994534B2 |
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JP2021194671A |
To provide a gear rolling tool that can prevent damage to a processing tooth, resulting from a load acting on the processing tooth of a rolling die.An external recess 36 that has a shape corresponding to a processing tooth 21 of a rollin...
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JP2021185001A |
To provide a high accurate screw rolling machine assembly that has a gear speed reduction assembly disposed between a pair of bearing assemblies.A high accurate screw rolling machine assembly has a fixed die block and a mounting flange. ...
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JP3235186U |
To provide a screw rolling machine capable of stable continuous feed. A thread rolling machine includes a machine table 1, a material cutting mechanism, a feed mechanism, and a thread rolling mechanism, and the material cutting mechanism...
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JP6971494B2 |
Cold-forming equipment configured as a high precision thread rolling assembly utilizing racks, guide rails, a bearing assembly including rolling element linear motion bearings and a gear reduction assembly.
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JP2021178332A |
To provide a method for manufacturing a bar stock having a plane part or a curved surface part by rolling.By holding and rolling a base material W1 with a die 1A provided with an initial section having protrusions for excess metal extrus...
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JP6956890B2 |
A roll body for a hydrostatic rolling tool includes a center, an axis of rotation running through the center, and a machining zone for rolling a workpiece. The roll body is rotatable about the axis of rotation and the machining zone has ...
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JP2021173293A |
To provide a shaft that can improve efficiency of manufacturing process by preventing a shaft material from shaking at the time of rolling processing, and to provide a motor with a reduction gear and a method for manufacturing a shaft.A ...
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JP6951186B2 |
To shorten time needed for changeover of a rotation plastic forming device and thereby improve the operation rate of the device.A rotation plastic forming device has a spindle mechanism 10, a workpiece holding unit A, and a spindle attac...
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JP6936103B2 |
To provide a manufacturing method of a gear which can accurately manage a dimension and a form of a tooth form at each portion of the tooth form.In this manufacturing method of a gear 1 having a rolling processing process for rolling-pro...
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JP6928734B2 |
The present invention provides a method for manufacturing a piston of a disc brake for a vehicle, wherein a corner portion between an outer peripheral end portion on an open end portion side and an open end portion is formed into a desir...
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JP6927469B1 |
To prevent waste material from being generated by manufacturing another part by utilizing a central portion which has been discarded as scrap in a conventional ring gear manufacturing method. In the method for manufacturing a ring gear a...
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JP2021120164A |
To provide a rolling tool for internal gear which can suppress the generation of excess thickness on a tooth surface of a workpiece in the rolling processing and support various tooth widths, and a rolling processing method of a gear usi...
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JP6915462B2 |
To provide a form rolling apparatus and a form rolling method which can simplify positional adjustment of a processing roller with respect to a tubular member while maintaining processing accuracy, and can process the tubular member rega...
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JP2021109224A |
To provide a spinning device and a molding method, allowing for accurate molding of a thick-walled portion where a placoid portion has increased thickness.A spinning device 1 comprises: a support portion supporting a base material 9 havi...
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JP6911702B2 |
To provide a roll-forming device which can be miniaturized without replacement of a roller die because of having two roller dies.A roll-forming device 1 includes a first support member 41a, a first roller die 42a, a first rotation device...
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JP6909696B2 |
To provide a rolling machine and a method capable of suppressing deviation of a processing start position of a workpiece, regardless of the kind of the workpiece.A rolling machine 1 performs rolling of a workpiece W by rotationally drivi...
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JP6903473B2 |
To provide forging material to which lubrication oil can be applied in a proper condition.The invention is directed to aluminum-made forging material 1 for forming forging 1b by die-forging. The forging material has a nearly columnar app...
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JP2021100778A |
To provide a tool for chipless manufacturing or finishing threads with high accuracy, and a method for manufacture of the threads.A tool 1 comprises at least one molding part 5 which is rotatable around a tool shaft A, a plurality of pre...
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JP6894562B1 |
To provide a male screw member capable of supporting a plurality of types of fastened members having different thicknesses, and a method for manufacturing the male screw member. The male screw member is a male screw member screwed into a...
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JP6894592B2 |
To provide a rolling die for a self-drilling screw which can smoothly perform screwing-in and can effectively prevent crack occurrence in a woody member.A die 11 for rolling a self-drilling screw in which on a portion provided with a thr...
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JP6889348B2 |
To provide a rolling die of a drill screw capable of surely removing a forging time burr generated in a drill part provided on the shaft part tip of a screw material simultaneously with a rolling process of a screw thread.In a die for ro...
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JP2021084121A |
To provide a mandrel for ring roll which is used for a ring roll molding machine which can provide improved yield strength when used under high temperature and high pressure.A mandrel is located on an inner peripheral side of an annular ...
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JP6879607B1 |
To provide a rolling processing apparatus capable of using a die for a long period of time. A rolling processing apparatus 1 includes a pair of dies 11,21 and a base 10 for holding a pair of dies 11,21, and one of the pair of dies 11,21 ...
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JP2021080532A |
To provide a highly versatile processing method of a galvanized steel tube, without applying a special pretreatment to the steel tube, or without forming an element tube having a restricted composition or a galvanized layer.There is prov...
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