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Patent Searching and Data


Matches 451 - 500 out of 1,203

Document Document Title
JP3520224B2
To provide an inner face working tool of a cylindrical body capable of working a recessed part such as a V shaped groove, etc., to a cylindrical body inner face, and a working method using the inner face working tool. The inner face work...  
JP3516335B2
To provide bead forming metallic patterns which can prevent bead formed sheet metal from warping in spite of the difference of sheet metal mechanical property or dispersion of sheet thickness and can form bead from the same pattern despi...  
JP2004508205A
A device for preparing pipe segments for joining with mechanical pipe fittings in a piping network is disclosed. The device has a fixed support with support surfaces engageable with the pipe segment, and a movable support, facing the fix...  
JP2004044720A
To provide an accurate and inexpensive rack shaft that can be manufactured by using inexpensive facilities by manufacturing a rack plate without depending on a machining gear cutting method and a complex forging method and then connectin...  
JP3496444B2
To form a dimple uniform in thickness in a tube to be worked by inserting a mandrel in which a recessed groove is formed into the hollow part of the tube to be worked and rotating plural rolls provided with projecting parts (plural balls...  
JP2004501773A
Special steel press fittings are produced in two process steps, which can be performed simultaneously, or also one after the other. The cut to size blank is widened in a die is upset in order to form the desired pipe connection areas.  
JP3489359B2
To increase the height of a fin, to reduce the apex angle of the fin, and to widen the helix angle of the grooves against the tube axis by making the original tube out of one with internal linear grooves or spiral grooves and drawing wit...  
JP2004001039A
To simplify a screw forming process and to improve durability when forming a screw.An inner tool 30 is constituted of a plurality of inner tool divided parts 31 arranged on the concentric circumference with the circumference of an outer ...  
JP3484942B2
To use the tooth end face of a spline tooth for positioning and to prevent the degradation of strength. This forming device is provided with an expansion part 21 to be connected to a first rotary member and a sleeve part 22 to be connect...  
JP3469505B2
To provide a method capable of forming a recess having a sharp angle in a hollow tube in which no material is removed, the wall thickness of the tube is kept constant, its outside diameter is not changed and the fiber orientation of meta...  
JP3464666B2
To provide a method for indenting a pipe material in which a penetrating quantity is small at the corner parts of the recessed part after processing, and a driving control of a workpiece is easy. The metal pipe material 11 is fixed betwe...  
JP3462427B2
To form a uniform thread on a metallic pipe by making the radius of curvature of a tip forming part of plural main forming punches equal to the radius of curvature of the groove part of an objective screw, making the dimension along the ...  
JP2003290822A
To provide a method and device for manufacturing a lock bolt for civil engineering that has a recess for expansion without performing drawing work to a large machining degree in the center of the tube, with both tube ends left in the rou...  
JP2003290817A
To provide a manufacturing device for a seamless tube with a grooved inner face with which the seamless tube with the grooved inner face having the large lead angle of the groove is manufactured at high productivity by smoothly rotating ...  
JP2003527970A
In order to improve a sheet metal forming machine comprising a machine frame, a first roller tool mounted on the machine frame for rotation about a first roller axis, a second roller tool which is rotatable about a second roller axis, in...  
JP3448905B2
PURPOSE: To obtain an internally grooved tube of a stable quality by providing an indicating means, by which the prescribed angle of the fixed part for attaching a roll is indicated, thereby facilitating the fine adjustment of a pressing...  
JP2003245724A
To provide a manual groove forming tool which can form a groove at a joint end of a cylindrical member of a metallic sheet and can allow the simple drawing of the joint end.A body lower rod 2 having a groove-forming recess 6 in its front...  
JP3430851B2
To roughly make a groove working quantity uniform in the longitudinal direction of a tube to be worked without increasing drawing force by inserting a working plug, which forms a groove on its outer face, into a hollow part of a tube to ...  
JP3429658B2
To provide a method for forming a thick necking which has a sufficient spring effect and excellent in durability and corrosion resistance, to a cylindrical member. In a method for forming a necking to a cylindrical member 34, in which a ...  
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...  
JP2003170236A
To provide a cylindrical member having a spline which can be molded in a short period of time and which has a high working accuracy and to provide an apparatus and a method for manufacturing the same.The manufacturing apparatus 1 manufac...  
JP2003518437A
A method for fastening a bottom part (40) to a can body (31). The method comprises positioning the bottom part at one end of the can body such that a rim portion of the bottom part is in abutting engagement with a radial flange formed at...  
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...  
JP3407559B2
To shorten the stroke and to firmly and uniformly execute caulking by attaching a caulking receive body on the top end of a piston rod and having a caulking punch to oppose to the caulking receive body on the opposite face of the top end...  
JP3408121B2
To enable continuous working using successively proceeding dies of extremely high productivity by fitting a metallic tube between these two dies in a situation that a core die has its diameter contracted and an encircling die has its dia...  
JP2003515454A
The invention concerns a method comprising the following steps: placing a tube (6) in an opening matrix (2) having an impression (22) corresponding to the desired final external shape; inserting the end (16) of the tube into a cavity (12...  
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...  
JP3391167B2
To ensure good heat transfer properties and wetting properties of an absorption solution as well as high heat transfer efficiency by forming an acute angle between the side of a corrugated fin and an internal wall surface of a pipe to be...  
JP2003080308A
To provide a seamless tube which has a smooth outer surface and an inner surface on which a plurality of kinds of grooves are formed, and to provide a method and a device for manufacturing the seamless tube having the grooved inner surfa...  
JP2003062610A
To manufacture a heat exchanger tube with inclined fins inside efficiently, which has the inclined fins formed on the inside surface and is applied to the heat exchanger for a refrigerator, an air-conditioner or the like.A grooved plug 3...  
JP2003508225A
The invention relates to a device for creating a recess in a workpiece which has a tool (30) which can be moved forward by a forward feed device (31) in a tool (30) which can be moved forward and which has at least one machining element ...  
JP2003053435A
To provide a roll grooving device for a pipe which has high durability and excellent tracking performance. This roll grooving device has a grooved roll and backup roll relatively displaced by a feed screw and a backup roll. Grooving of a...  
JP3377884B2
A gear teeth forming apparatus is used for forming a plurality of gear teeth on an outer circumferential wall of a pressed drum. The apparatus includes a punch and a plurality of rotational rollers. A plurality of convex/concave portions...  
JP2002372390A
To provide a heat exchanger tube for falling film evaporator which is improved in heat transfer ability by improving the wet-spreading property of a refrigerant on the external surface of the heat exchanger tube, particularly, along the ...  
JP2002361332A
To provide a support roll for forming a platy material with fin capable of positively forming the prescribed height of a fin by suppressing a forward slip or broadening even if a workpiece is of copper platy material excellent in ductili...  
JP2002346642A
To bring a starting point of a cylinder groove close to a closed end of cylinder in a gas cylinder device. In a forming method of the cylinder groove 1A of the gas cylinder device, a guiding member 20 is moved in the axial direction of t...  
JP2002335118A
To provide a method of manufacturing a leaking waveguide having high efficiency and high accuracy and high quality.A copper tape 3 is formed into a pipe 4 circular in cross section; then the wall surface of the pipe 4 is corrugated, and ...  
JP3346951B2  
JP3337880B2  
JP2002292420A
To provide a reduction method for contracting a pipe diameter without increasing the wall thickness of the pipe and with a low cost and excellent productiv ity, a manufacturing method for a seamless heat transfer pipe with an inner face ...  
JP2002292411A
To provide a crossing groove forming apparatus having a grooved roll in which breakage on the groove formed surface of a grooved ring and durability is also improved and to provide a welded tube with a crossing groove which provides lowe...  
JP2002282954A
To provide a parking gear which can be formed out of a plate material and also the strength of a tooth part and serration part thereof can be sufficiently secured, and to provide a method and a device for forming the same.A work 11 which...  
JP3327842B2  
JP2002263738A
To bend a tubular body of non-circular section with a minimum curvature without difficulty by forming a recess on the inner side of the neutral line at a curved part of the tubular body.In a method for bending the tubular body of non-cir...  
JP2002263761A
To provide a hollow rack shaft and a manufacturing method thereof capable of easily and continuously forming rack teeth.A steel strip 1 is continuously fed, rack teeth 1a are intermittently formed substantially in the center part in the ...  
JP2002529247A
The machine has its closing wheel (6) below the working surface. A shaping roller (4) and a beading and feeding-in roller (1) form a bead in the workpiece (100), which during this process is held in the correct position by hydromechanica...  
JP2002235727A
To form a reduced diameter part and a serration in a single process and easily and accurately form the serration in a hollow pipe having the serration in the inner surface of the reduced diameter part.A die 7 for reducing the diameter of...  
JP3316595B2
A coupling disc (20) (i.e. the armature or rotor) of an electromagnetic coupling is made by using a punch and die to emboss a plurality of radially spaced rows of angularly spaced grooves (32) in the non-working face (24) of the disc (20...  
JP2002224744A
To provide a production method of a pipe having a screw thread, which method can significantly reduce the production cost by improving productivity through a mass production and using an inexpensive metal strip.Ridges or grooves 2a corre...  
JP2002210518A
To provide a planar catalyst forming device that can stably manufacture a planar catalyst formed body having a uniform pitch of ruggedness even when dispersion of thickness exists in the catalyst body before forming.In a device for passi...  

Matches 451 - 500 out of 1,203