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JP10071431 |
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...
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JP10058064 |
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...
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JP10024322 |
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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JP2740431 |
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...
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JP10015633 |
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...
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JP10015619 |
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 ...
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JP2733640 |
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...
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JP09285824 |
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...
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JP09276944 |
To form a membrane having multiple streaks in high precision. Displacements at approach movement of upper dies 11a, 11b bisected and lower dies 17a, 17b bisected are detected by linear encoders 25a, 25b, 26a, 26b, by controlling the driv...
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JP09267124 |
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...
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JP09225565 |
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...
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JP09229123 |
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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JP09216019 |
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...
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JP09206877 |
To improve the workability of a cylinder groove. In a cylinder groove working device 20 of a gas cylinder device in which a cylinder groove 6 capable of generating the expansion side damping force is formed on an inner circumference of a...
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JP09210013 |
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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JP09192723 |
To manufacture a tube having a grooved inside surface as stabilizing quality by making each member light in weight, also improving durability and enabling high-speed rotation of a planetary ball die. A grooving plug 12 is arranged at the...
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JP09174189 |
To control the occurrence of shrinks (deformation) of a material on a partition wall part between plural numbers of grooves and excellently form plural numbers of annular grooves in a specified shape in a time of roller forming plural nu...
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JP09168820 |
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...
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JP09168821 |
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 ...
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JP09164426 |
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...
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JP09158431 |
To easily and speedily form a stripe broken line at a specified point of a plate for building along its longitudinal direction to prevent thermal expansion due to change of outside air temperature and a reversal caused by strong wind, et...
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JP09141354 |
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...
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JP09141333 |
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...
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JP09136121 |
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...
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JP09126678 |
To provide a heat transfer tube with internal groove and the manufacture thereof capable of preventing a phenomenon that cracks are generated from the inside of a groove neighbored to a welded part upon expanding the pipe. A multitude of...
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JP09126589 |
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...
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JP09122765 |
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...
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JP09119793 |
To make it possible to prevent the occurrence of a crack from the groove adjacent to a welded part at the time of tube enlargment. Many fins 12 protruding from the inner peripheral surface of a metal tube 10 and one welded part 16 extend...
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JP09099365 |
To provide a soldering method for a metallic member capable of obtaining a bonded condition in which sufficient fillet is formed when a cylindrical metallic member is inserted in a hole of other metallic member and bonded by soldering. B...
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JP09085353 |
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...
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JP09079487 |
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...
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JP09076025 |
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 ...
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JP09070612 |
To provide a method to manufacture a heat transfer tube with a double groove suitable for promoting boiling of non-azeotropic refrigerant at high speed by holding balls in a first row and a second row by flanges arranged on the outer sid...
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JP09057359 |
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...
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JP09057328 |
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...
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JP09057352 |
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...
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JP09052127 |
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...
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JP09052129 |
To perform various punching operations in a short time without causing joints and to facilitate circular or curved working by moving a work horizontally with the work held in cooperation with a punch tip and a die tip and thereby carryin...
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JP2607011 |
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...
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JP09024434 |
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,...
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JP09001279 |
PURPOSE: To enable formation of a tooth-form with one stroke of a punch in a simple press machine by fitting a working sheet metal-made drum to the outer periphery of a strong punch and providing a backup ring for restraining the expandi...
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JP08327266 |
PURPOSE: To permit the reduction of opening force of a sheet member about the center of a bent part compared with a conventional force by a method wherein the sheet is bent about the center of a central recessed groove so that the centra...
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JP08318321 |
To provide a method of forming a C-shaped contoured rail with a constant thickness by rolling. In a contoured rail manufacturing method for manufacturing a contoured rail with a C-shaped cross section provided with an inward ridgeline 2 ...
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JP08300144 |
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 ...
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JP08300055 |
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 ...
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JP08294733 |
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...
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JP08281341 |
PURPOSE: To work a recess for restraining on a pipe to be used as a head rest stay by a simple forming working. CONSTITUTION: A mandrel 11 supporting an inside surface of a pipe is inserted into the pipe on which recesses 12 and 13 are p...
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JP08281339 |
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...
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JP08206725 |
PURPOSE: To provide a manufacture method of an inside grooved pipe facilitating condition setting for working and with satisfactory workability. CONSTITUTION: Floating plug 2 and grooved plug 4 connected through the floating plug 2 and a...
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JP08197147 |
PURPOSE: To form a snap ring groove with the roll over on a drum opening end side being suppressed small, and without causing any fall or crack in a device where the snap ring groove is formed in the half blanking in the tooth tip part o...
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