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Patent Searching and Data


Matches 601 - 650 out of 1,203

Document Document Title
JP2739612B2
A punch press is provided with a tool bearing a workpiece-deforming roller, the tool being received in an aperture in the press for movement between a lower position in which the roller comes into deforming contact with a workpiece suppo...  
JP2740431B2
PURPOSE: To obtain a press working device for a boss by which device a boss with a satisfactory quality is formed with a single process without drawing and cutting. CONSTITUTION: This is a press working device for a boss by which a plana...  
JP2733640B2
PURPOSE: To enable formation of highly accurate recessed part on a hollow shaft by forming, at the abutted part of a pair of core bars, opposingly inclined flat surfaces, forming locally a space in the shaft, pressing the shaft wall by a...  
JPH1078106A
To correct the deformation of a flat plate part at low cost by flattening one surface of the flat plate part, and forming a groove on the other surface by plastic deformation. A clutch plate 21 is formed of a cylindrical first raised par...  
JPH1071431A
To improve precision of beading by conducting rebeading at the same places as defore by using the same die as before in continuing thereto. In a step 1, a die to be used for endless beading is selected, In a step 2, positioning of a work...  
JP2725395B2  
JP2709960B2  
JPH1015633A
To provide a method for manufacturing the heat transfer tube for which a large type and much expensive press and dies are not necessary, and which is unexpensive, moreover, which enables an optimum design according to various needs. A cy...  
JPH1015619A
To reduce the residual stress at the corner part of a steel sheet at the time of bending and to reduce the radius of the corner part by forming the recessed nicking line on the surface of the steel sheet with compressive deformation and ...  
JP2696299B2  
JP2690817B2  
JP2553632Y2  
JPH09285824A
To provide a forming method and device of a rotation symmetry shaped moving, in particular, the method for forming an under-cut on the side wall and the device therefor. After a molding 15 is mounted concentrically on a forming die 20 of...  
JP2669115B2  
JP2551191Y2  
JPH09267124A
To form grooves by plastic working without necessitating a curing stage, to shorten manufacturing time and to reduce cost by applying the plastic working using a forming die to a metallic short pipe of a base stock. When a mandrel 3 is f...  
JP2659129B2  
JPH09225565A
To improve the processing efficiency by forming notch parts on the circumferential periphery of a can lid in a prescribed interval along the diameter direction over the total circumference direction and restricting the occurrence of wrin...  
JPH09216019A
To prevent members having spherical projections from moving to a guide pin and falling out and to maintain the high accuracy of grooving over a long period by firmly fixing the members having spherical projections under the state of area...  
JP2628794B2  
JPH09168820A
To obtain a special shaped tube without cracks in corner parts, having small corner radius and excellent in design property. A metallic strip is cold-rolled at a draft of 33-67% using rolls having plural projections which circulate the b...  
JPH09168821A
To provide a dissimilar tube having a sharp corner part and excellent in quality and design by performing cold rolling of a metallic strip using a roll having projections whose radius of curvature at the tip, and angle of projection are ...  
JPH09164426A
To efficiently form grooves in an inner surface of a metallic tube by providing a spherical member on a rear part of a drawing plug, bringing a buckled part of the metallic tube into contact with the spherical member to shape the metalli...  
JPH09141354A
To form a high tooth height spline. This producing method is composed of a drawing process which executes drawing by using the die and a punch, an expansion process which executes expanding by using a die and a punch of forcibly insertin...  
JPH09141333A
To facilitate bending and to obtain the sheet metal bending structure which is never parted even when a metal plate is repeatedly bent and drawn by forming a cut in the metal plate except both side parts of the metal plate. On the top su...  
JPH09136121A
To efficiently and easily produce a die by fitting a member for forming a bead part to a recessed part in which the forming face of a die, including upper and lower dies, having a protrusion part for bead formation is formed. As a bead p...  
JPH09122765A
To work a groove and to moreover bend the worked groove by plastic working with a small working force without generating any chip on a work. Plastic working for making a V-shaped groove on the work W is performed with a V-shaped part 87V...  
JP2607011B2
PURPOSE: To provide a manufacturing method of a fin for heat exchanger where a penetrating hole with collar having a collar of the prescribed height can be easily formed on a metal plate like body which is made of a thin sheet and a hard...  
JPH09503720A
PCT No. PCT/EP94/03303 Sec. 371 Date Apr. 10, 1996 Sec. 102(e) Date Apr. 10, 1996 PCT Filed Oct. 6, 1994 PCT Pub. No. WO95/11144 PCT Pub. Date Apr. 27, 1995The present invention deals with the problem of changing the design of the roof r...  
JP2597107B2  
JPH0985353A
To manufacture a member of deformed section having a sharp corner part and excellent in surface quality. When a member having the target section is manufactured by bending a metallic strip 10 in which a groove 11 along the longitudinal d...  
JPH0979487A
To provide a pipe with projecting spiral lines and its processing method in which the connecting strength can be maintained by realizing sufficiently the smooth connection of round pipes each other. At the parts other than both ends 2A a...  
JPH0976025A
To make it possible to bend a metal sheet by hand or a simple tool by weakening the metal sheet along a bend line before bending it. The metal sheet 14 is weakened along bend lines 10 and 11. To weaken them, grooves 19 are formed on the ...  
JPH0957359A
To realize the automatic alignment of a tool shaft 3 to machine a groove with a work. A tool shaft 3 to hold a ball 31 is lowered in a bearing sleeve W1 which is a work to be held by a work chuck 2 while the tool shaft is turned, and a g...  
JPH0957328A
To provide a manufacturing method for a heat-transfer tube with internal groove wherein tube rupture is suppressed and high speed drawing is possible and productivity is excellent together with excellent formability of internal groove, a...  
JPH0957352A
To sharply bend a lip of steel shapes. In a groove forming disk 13, a groove W2 is formed by forcibly pressing on a so-called valley bending line L of a flange W1. The flange W1 is bent gradually with an outer roll 22 and an inner roll 2...  
JPH0952127A
To provide the manufacture which is excellent in the formability of inner surface grooves, which is capable of breaking suppression and high speed drawing of a tube and which greatly reduces residual oil inside a metallic tube. First, re...  
JP2523539Y2  
JPH0924434A
To provide a process to manufacture a formed metallic can in which a bottom part and a peripheral edge wall continuous to the bottom part are provided, a geometrically expandable region with at least one peripheral edge wall is provided,...  
JP2555736B2  
JP2555183B2  
JPH08300055A
PURPOSE: To produce a tube having ruggedness and smooth in part by rotating a working disk arranged radially from tube axis in synchronizing with movement of tube and expanding/reducing its distance to tube axis so as to reduce friction ...  
JPH08300144A
PURPOSE: To improve the washability of a drum by forming the back bead in a drum by the gas-shielded arc welding from a body side outside the drum, and filling the clearances between the body part and circumferential edge parts of a top ...  
JPH08294733A
PURPOSE: To improve the service life of a tool, and to arbitrarily set the depth and shape of a groove of a bearing sleeve by reducing the wear and the plastic deformation of a groove forming part and a fixing pin or the like of a manufa...  
JP2515497Y2  
JPH08281339A
PURPOSE: To prolong a tool life, and to improve quality of a groove depth of a bearing sleeve. CONSTITUTION: The abutting surface of balls 3A and 3B arranged on the outer peripheral surface of a shaft 1 for groove forming and a fixing pi...  
JP2545303B2  
JP2541208B2  
JP2510902Y2  
JP2534772B2
A yoke for universal joint is composed of a cylindrical coupling tube formed by pressing a metal plate and having a slit in a radial direction and serrate grooves on the internal periphery; a pair of flanges integrally formed at an end o...  

Matches 601 - 650 out of 1,203