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JP6872004B2 |
[Problem] To provide a screw that can be screwed in until the screw closely adheres to the surface of a workpiece. [Solution] A screw wherein a complete male screw section 21 forming a helical complete male thread crest shape and an inco...
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JP6871595B2 |
To provide a double-screw structure in which a general specification first screw and a special second screw which is formed by deforming a multiple-thread screw at a thread of the first screw with a lead different from that of the first ...
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JP6859225B2 |
To provide a sintered gear having increased strength while suppressing generation of cracks and emboly damages of a stock.Provided is a method for producing a sintered gear comprising a rolling step where a stock 13 for a gear is subject...
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JP6854484B2 |
To provide a rolling method of a ring-shaped material capable of suppressing generation of crack when performing rolling processing of a ring-shaped material formed of a Ni-based super alloy.The rolling method is configured to repeat hea...
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JP6852611B2 |
To provide a manufacturing method of a gear having sufficient strength, capable of supplying a lubricant to a meshing surface of the gear without requiring large energy.A manufacturing method of a gear 100 includes the first rolling step...
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JP6845740B2 |
To provide a rolling machine in which it can be notified that an abnormality occurs in a rolling pressure, and a program therefor.A rolling machine 1 rolls a work-piece W by rotating plural dies 61, 62 while sandwiching the work-piece W ...
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JP6842664B2 |
In a method of cooling a main roll, strength of a shaft and a peripheral portion thereof of the main roll is sufficiently secured, maintenance of the main roll is facilitated, and the shaft and the peripheral portion thereof of the main ...
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JP6843777B2 |
A device and method for designing lightweight, strong, material efficient, extruded and pultruded profiles, profile segments and surfaces produced in profile production with rotating dies creating superior resistance to compression, bend...
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JP2021038761A |
To provide a manufacturing method of a ball screw device which can suppress a variation of an oblique diameter of a screw shaft at each point along an axial direction of the screw shaft, and the ball screw device.A manufacturing method o...
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JP6837312B2 |
To heighten an operation rate of a device by shortening a time required for setup change of a rotation plastic processing device.A rotation plastic processing system has a rotation plastic processing device 2 capable of exchanging a work...
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JP6834682B2 |
A rolled-thread bolt production method includes: forming a steel wire into a workpiece having a prescribed unthreaded-bolt shape; forming a threaded-portion on the workpiece through thread rolling; and performing shot blasting on an enti...
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JP6832537B2 |
To provide a rolling die having remarkably heightened durability as a tool by keeping abrasion resistance for a long term, while preventing generation of chipping, break or the like.In a rolling die 2, an atom nitrided layer 14 in which ...
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JP6815160B2 |
To heighten an operation rate of a device by shortening a time required for setup change of the rotation plastic processing device.A rotation plastic processing device has a roller holding movement mechanism 50, a processing roller suppo...
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JP6803336B2 |
A ring rolling process and corresponding apparatus are disclosed. A ring shaped workpiece is provided, the ring shaped workpiece having a principal axis, an inner radial surface, an outer radial surface, a first axial surface and a secon...
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JP6798893B2 |
To provide a rolling flat die capable of accurately rolling a spline in a workpiece.A first processing tooth 20 can shorten a width dimension of a crest-removing surface 21 of the first processing tooth 20 positioned on the starting end ...
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JP2020189335A |
To achieve a structure which can support at least an axial end part in a workpiece positioned in a radial direction when performing processing of forming a male side engagement part on a part to be processed, provided in the outer periph...
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JP6788917B1 |
To provide a method for manufacturing a bolt capable of preventing the occurrence of a shape defect at a tip portion. A method for manufacturing a bolt is a first rolling step 32 in which a metal material having a head is rolled to form ...
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JP6786597B2 |
A method and a device for the production of an internally cooled inlet or outlet valve for internal combustion engines, together with the resultant valve includes provision of a workpiece, which has a cylindrical stem and a cylindrical h...
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JP6778391B2 |
To provide a ring rolling method capable of rolling a raw material for ring rolling into a desired shape while restraining temperature drop.There is provided a ring rolling method for hot-rolling a ring-shaped rolling material while spre...
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JP6772189B2 |
A spinning apparatus for decreasing by spinning a thickness of a portion of a tube material having a uniform thickness except at a first axial end portion is disclosed. The spinning apparatus includes a spindle-side chuck having a conica...
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JP6768837B2 |
The invention relates to a method and a device for producing a shaped part from a circular blank, wherein the circular blank is rotated and at least one compression roller is radially applied to an outer edge of the circular blank, said ...
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JP6759112B2 |
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 spring clamp mechanism Q, a first piston R, and a second piston S. Th...
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JP6754496B2 |
The invention relates to a device and a method for forming, in which at least one spindle is driven in a rotating manner by means of a rotary drive, a workpiece is received on the spindle by means of a clamping means and clamped on the s...
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JP6748497B2 |
To provide a screw repair device capable of repairing a screw part quickly and securely, while suppressing occurrence of troubles including a double screw.A screw repair device 1 of the invention for repairing a thread part b1 of a screw...
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JP2020131252A |
To provide a manufacturing method of a high strength aluminum alloy bolt for permitting the high strength aluminum alloy bolt which prevents seizure upon working, at the same time, improves formability, improves stress corrosion cracking...
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JP6740993B2 |
To provide an inner surface resin lining thin steel pipe with an excellent screw part (of which a screw shape of a steel pipe outer surface has a normal JIS shape, and unevenness on a steel pipe inner surface is small), and a manufacturi...
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JP6732273B2 |
Provided is a method for performing an external pipe thread process on a hollow blank by at least twice rolling: firstly, the first rolling wheel group rolls the outer surface of the hollow blank into a threaded cylindrical surface or a ...
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JP6725566B2 |
To provide a hollow material manufacturing method by which a male screw can be formed while simplifying a complex process.A hollow material manufacturing method comprises: a preparation process in which a hollow work-piece having at leas...
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JP6726818B1 |
To disclose an aluminum foil rolling apparatus for an electrolytic capacitor. A rolling chamber that opens forward is installed in the main body of the device, and a rolling mechanism that can roll aluminum foil into a cylinder is instal...
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JP6722359B2 |
This circular rolling mill has a fixed main frame, a pair of cylindrical rollers, internal and external, to shape internal and external radial faces of an annular part and supported by a first secondary frame mounted on the main frame, a...
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JP6723103B2 |
To provide a manufacturing method of a shaft which can improve abrasion resistance and fatigue strength of a journal part easily without using laser beam irradiation.A journal part 18 is formed by preparing a material having a journal co...
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JP6722056B2 |
To provide a screw repair device capable of suppressing occurrence of troubles including a double screw, in which a screw is jammed with a die during repair.A screw repair device 1 of the invention for repairing a thread part b1 of a scr...
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JP2020519444A |
The rolling tool (5) includes a foundation body (6) for fastening the rolling tool (5) to the rolling mill (1) and a profile portion (7) for forming the workpiece (2) to be rolled. ) And. The foundation body (6) and profile part (7) form...
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JP2020099942A |
To provide a machine tool which improves screw form rolling efficiency by a screw form rolling tool.A prescribed turret support section (shown as a cutter holder body 11) includes a rod-like member 60 which abuts on an operation section ...
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JP2020101293A |
To provide a method for correcting translational misalignment between male and female fastener members to prevent false threading.The method comprises inserting a lead end of a male fastener member into a female fastener member. The fema...
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JP6716514B2 |
To provide a rolling flat die capable of facilitating supply of lubricant into a space between the peak of the processing tooth and the work-piece to improve durability of the rolling flat die.A rolling die comprises multiple processing ...
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JP2020094259A |
To provide a manufacturing method that further improves durability and wear resistant property of a rolled part to solve such the problem that input to a gear and a shaft for transmitting power tends to become high revolution when a moto...
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JP6705711B2 |
A spinning forming method includes: preparing a plate including a back surface at which a ring-shaped projection is formed along an outer peripheral edge of the plate, a ratio of a thickness at a reference position of the plate to a thic...
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JP6704584B2 |
To provide a novel machining method and machining apparatus, with which cylinder parts with a flange may be accurately produced without occurrence of machining error, such as excess thickness and insufficient thickness, and the cylinder ...
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JP2020078813A |
To provide a rolling apparatus that can perform a highly accurate rolling even when it has structure in which a plurality of roller dices are pressurized by one pressurizing device.A rolling apparatus 100 is provided that comprises: firs...
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JP6698940B2 |
Disclosed is a process for forming, by means of warm ring rolling, a high-carbon chromium bearing steel capable of structure spheroidization, the process comprising the following steps: S1. a ring blank is heated, in a heating furnace, t...
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JP6689497B2 |
A lightweight tyre disc for use with a vehicle increases the strength of edges around heat dissipation openings of the disc by increasing the thickness of the material at the edges of an inner wall of the disc around the heat dissipation...
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JP6684605B2 |
A method for manufacturing a linear cutter permits continuous manufacturing of linear cutters and achieving remarkable reduction in processing steps, processing time, and a process cost, and is immediately feasible to linear cutters havi...
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JP6687326B2 |
When mounting a heated material (S) on a table (5), applying a load to the material (S) with a forming roll (15), while rotating the table (5) by rotating the material (S), and forming the material (S) into a disk shape by roll forging, ...
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JP6687443B2 |
To provide a manufacturing device for a wheel rim for an automobile in which a placement portion of a work supply mechanism needs not to be replaced even if a shape (a shape of an outer diameter in particular) of a rim work to be subject...
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JP2020055023A |
To provide a gear rolling die suppressing reduction in molding accuracy to reduce the cost of the die while suppressing formation of a gap between adjacent two pieces during rotation of the die.A gear rolling die 1 is structured so that ...
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JP2020041191A |
To provide a method for producing a gear capable of forming densified layers at the whole sides of a plurality of teeth while suppressing the generation of inner cracks.A method for producing a gear comprises a step (step S3) of rolling ...
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JP2020040110A |
To provide a rolling and forming device for a gear, the device having a long-life rolling and forming dice.A rolling and forming device for a gear comprises: at least one cylindrical rolling and forming dice 3 having on a side surface a ...
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JP2020037119A |
To provide a method of manufacturing a gear made of a composite material, which can reduce a period of manufacturing time and a manufacturing cost.In a method of manufacturing a gear according to the present invention, a molding material...
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JP6662676B2 |
To provide a manufacturing device for a wheel rim for an automobile in which a guide roll needs not to be replaced even if a shape (a shape of an outer peripheral surface in particular) of a rim work to be subjected to roll molding varie...
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