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JP4023714B2 |
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JP4020678B2 |
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JP2007533464A |
A shell tube and heat exchanger (10) includes a plurality of tubes surrounded by a shell (16). Each tube (12) includes a plurality of indentations. A mold is placed in a desired positions and orientation in a die. A tube is placed in a f...
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JP2007530886A |
A method for connecting pipe elements together end to end. The method includes providing a coupling having a plurality of segments with at least one camming surface, the segments being joined end to end by a plurality of adjustably tight...
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JP2007530887A |
A method for connecting pipe elements together end to end. The method includes providing a coupling having a plurality of segments with at least one camming surface, the segments being joined end to end by a plurality of adjustably tight...
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JP2007530288A |
A method for connecting pipe elements together end to end. The method includes providing a coupling having a plurality of segments with at least one camming surface, the segments being joined end to end by a plurality of adjustably tight...
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JP3995182B2 |
In production of hollowed rack bars from steel tubes (3) for use in steering equipment for automobiles and so on, a part of length of the steel tube to be processed and its adjacent parts is held in split dies (5, 6) encircling a whole c...
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JP2007218566A |
To prevent cracking in a groove or a fin during manufacturing. The ratio (R/δ) of the circular radius R mm of a bottom angular part (2b) of a groove (2) for the bottom width δ mm of the groove (2) is 0.10-0.25, and the ratio (r/δ) of ...
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JP2007216256A |
To provide a user-friendly manual tool for roll machining of a metal sheet with which a metal sheet is formed into a roll having a projected line without applying strong force to the metal sheet, and which enables an operator to perform ...
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JP3963526B2 |
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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JP2007190570A |
To provide a feeding method in a press machine, which method can automatically feed thin sheets to the press machine, and can carry out press work with industrially excellent productivity, and further to provide a feeding device. A feedi...
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JP3942209B2 |
To enhance the easiness in processing a cylinder groove and simplify the mounting structure of a processing roller and a guide roller. A gas cylinder device concerned has a cylinder 2 which is provided at the bore with a cylinder groove ...
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JP2007144433A |
To provide a rack for steering apparatus and manufacturing method therefor with which the rack is light weight and the degree of filling of a blank to a tooth form is improved and the forming precision of the rack tooth is improved.In a ...
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JP3923444B2 |
To provide a method and a device that can apply a press working to a recess portion with high precision on a headrest stay consising of a metallic pipe material and can reduce press-working cost. A plurality of roll punches 36A-36D, 37A-...
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JP2007512960A |
A method for producing vehicle parts is provided, particularly shell parts for vehicles, according to which a three-dimensionally preformed semi-finished or finished standard part, especially a standard shell part, is produced for a seri...
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JP3908820B2 |
To improve the stability, the high speed rotation property, and the durability of the working tool by providing a plate-like ball holder for holding balls in prescribed positions. By using an adjusting plate 3, a mutual distance in the a...
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JP3901551B2 |
To facilitate forming of a pipe rack while breaking of a mandrel is avoided in the formation of a pipe rack by using a tooth profile die and mandrels. In the pipe rack forming method, in a state that a pipe forming body 1 is held by the ...
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JP2007038266A |
To provide a forming apparatus and a forming method of a thread groove by which the thread groove is formed on a metallic tube while preventing the generation of thin portions which can not be allowed for the metallic tube and a metallic...
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JP2007038236A |
To suppress the camber of a work and also to accurately form a joined part with respect to a groove forming apparatus of a heat exchanger tube.The groove forming apparatus of the heat exchanger tube is constituted so that a first grooved...
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JP2007021547A |
To provide a pipe working apparatus with which a bulged part or a grooved part is formed on a pipe by simple constitution.A driving and forming part 3 which is rotated with a driving rotary shaft 2 connecting to a driving means is instal...
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JP3872385B2 |
To provide a fluted plug made of a sintered hard alloy being a tool for plastic work exhibiting sliding characteristics such as low friction coefficient and excellent wear resistance and having excellent heat resistance and oxidation res...
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JP3868174B2 |
To provide a support with a costless reflecting body which is low in the forming cost, since a recess for a reflecting body can be formed at an optional position without restriction of manufacturing conditions, in supports for an inexpen...
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JPWO2005035159A1 |
The roll support block 10 has four stages of rolling rotary rolls 6 to 9, and the roll support block 10 moves by being guided by the guide hole 13 of the pipe holder 5. The rolling rotary rolls 6 to 9 are pressure-welded to the hollow pi...
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JP3848952B2 |
To provide a headrest stay processing method capable of preventing defective accuracy by excess material, saving a space required for performance, and realizing high productivity. A headrest stay is inverted in the right-to-left directio...
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JP3845775B2 |
To mold a given groove on an inner surface of a cylindrical element in a manner that it can be used permanently. This groove processing device is composed of a guide member 1 inserted and mounted in a cylinder element C, having a flat gu...
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JP3846643B2 |
To improve processing workability of a cylinder groove. This gas cylinder groove processing device 20 for gas cylinder device, which forms a cylinder groove 6 capable of generating elongating side damping force at the inner circumference...
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JP3838321B2 |
To provide a method for efficiently manufacturing a hollow rack bar while increasing the work quantity in one working process, and a device therefor. The hollow rack bar manufacturing device comprises a die 1 to position and hold a hollo...
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JP3827402B2 |
To form grooves with a uniform depth formed on an inner diameter face of sleeves composing a fluid bearing. Because a rotary driving part 1 attached with a machining tool 5 is supported with a linear driving part 2 through a free moving ...
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JP3807698B2 |
To permanently realize the smooth rolling condition of a work roller while preventing meaningless complicated constitution in the case of forming an inside diameter groove on an inner circumference of a cylindrical body as designed. A gr...
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JP3807699B2 |
To form a groove in an inner circumferential surface of a cylindrical body in an optimum manner so that a smoothly rolling condition of a work roller can be permanently realized. A grooving device comprises a guide member 1 which is inse...
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JP2006181588A |
To efficiently perform grooving work with a press while allowing more workpieces 1 to be arranged in a limited space by narrowing the space required to working per the workpiece 1.This grooving press die has a fixed cylindrical guide 11 ...
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JP3796532B2 |
PCT No. PCT/GB95/01415 Sec. 371 Date Dec. 17, 1996 Sec. 102(e) Date Dec. 17, 1996 PCT Filed Jun. 16, 1995 PCT Pub. No. WO95/35196 PCT Pub. Date Dec. 28, 1995An apparatus for forming grooves in the cylindrical surfaces of tubes or rods ha...
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JP3792690B2 |
To provide a manufacturing method of a profiled heat transfer tube for heat exchangers by which a petal-like profiled cross-sectional part is easily formed on the heat transfer tube without generating break in the bottom part of a concav...
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JP3794341B2 |
To provide a tube with a grooved inner face which is manufactured at high yield without causing break by a roll rolling method and a manufacturing method for it. A tube 1 which consists of copper or copper alloys, is an unannealed H-mate...
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JP3790647B2 |
To provide a tool and a method for forming a recessed part to easily form a recessed part of a desired depth without breaking any structure of a work or a recessed part forming tool even when small recessed parts are formed at high speed...
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JP3788285B2 |
To provide a method and apparatus for forming a groove of a metallic foil capable of forming a bar groove on both surfaces of the metallic foil that generates less twisting or bowing or the like. In the position where consecutive bar gro...
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JP2006142333A |
To provide a connecting apparatus of pipes by caulking by beading which is utilized in a pipe other than a straight pipe so that the outline shape in portions other than a connecting part is a curved pipe or the like and also automated b...
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JP3779997B2 |
A method and an apparatus for forming circumferentially extending necked and flanged parts at an end of a bilaterally open hollow cylindrical body. First and second axially aligned shafts carry axially displaceable first and second inner...
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JP3772090B2 |
To provide a method capable of preventing generation of the burr of a root part of a tooth width end part and efficiently manufacturing a member when a tubular member having a rack used for a steering apparatus of an automobile is manufa...
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JP2006110559A |
To provide a bottle can manufacturing method by which a skirt part of a bottle can is highly accurately formed, consequently a bottle can with a cap obtained by screwing the cap to the bottle can is satisfactorily unsealed and resealed, ...
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JP2006095539A |
To accurately and stably manufacture a specially shaped pipe which is excellent in bending strength and energy absorbing property.A method for manufacturing the specially shaped pipe, which has an outside profile having a nearly trapezoi...
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JP3757523B2 |
To form a circumferential groove in a condition where a burr of a projected corner part is reduced, to reduce the man-hour, and to efficiently facilitate the work by pressing a part of a plurality of projecting parts on an inner circumfe...
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JP3752646B2 |
A tubular member to be shaped comprises a first portion to be shaped and a second portion other than the first portion. A punch having a projection is inserted into the tubular member and the tubular member is pressed between a die havin...
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JP3750521B2 |
To avoid complication and large-sizing of equipment and an increase in an equipment cost by simplifying a manufacturing process. While sealing a liquid W in the inside of a body 1 to be worked, press forming is conducted with a press low...
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JP3749166B2 |
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JP2006043739A |
To provide a method for improving the efficiency of forming a plurality of grooves that are formed on the inner circumferential face of a cylindrical member in the circumferential direction at some intervals.An apparatus M is provided wi...
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JP3744082B2 |
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JP3743330B2 |
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JP3743342B2 |
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JP2006007310A |
To provide a screw thread press forming technology which can press-form a thread portion not only on a cylindrical or tubular body but also on a solid bar or column having no hollow part inside.Both ends across the width of a square pin ...
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