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JP3304523B2 |
PURPOSE: To prevent the occurrence of a crack for obtaining desired strength by, in the case of manufacturing an automobile frame member having a closed section structure with a flange, making the curve radius of a root angular part of t...
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JP3302244B2 |
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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JP2002192289A |
To provide a mold for forming a rack having a long service life when manufacturing a tubular member with a rack which are used for a steering equipment or the like of a car, wherein a part of the length of a steel tube as a raw material ...
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JP3297273B2 |
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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JP3285051B2 |
PURPOSE: To provide a camshaft manufacturing device capable of surely pressing a cam piece in a shaft even tolerance between the outer diameter of the shaft and the shaft hole of the cam piece is small. CONSTITUTION: This device is provi...
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JP2002143920A |
To provide a manufacturing method of an inner face grooved tube by which the inner face grooved tube having a high heat transfer performance is manufactured while reducing wear of a grooved plug and not incurring lowering of productivity...
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JP3282754B2 |
PURPOSE: To eliminate the possibility that a shaft is off-centered due to the processing by circular protrusions arranged on the outer peripheral surface, and automate the loading and unloading process of the shaft, in a device, in which...
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JP2002126846A |
To prevent a roll for a form rolling from being cracked by depressing elusion of the binding phase of cemented carbide.The manufacturing device of a heat transfer tube with grooves at the internal face is provided with a fin form rolling...
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JP2002113516A |
To improve manufacturing efficiency by stably running a tube stock while restricting bend of the tube stock by a press roller between a squeeze roll and a pre-forming stand when forming in line a special shape tube having a helical rugge...
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JP2002102943A |
To form a highly precise groove on the surface of a cylindrical work 40.A cylindrical work 40 is fixed in the axial direction and rotated with respect to at least one spinning roller 12. The spinning roller 12 having a protruded outline ...
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JP2002102916A |
To provide a method for manufacturing an inside grooved tube capable of improving productivity of the inside grooved tube with high thermal performance, without causing a damage on the grooved plug and capable of making the best possible...
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JP3269244B2 |
PURPOSE: To facilitate the working of a small diameter tube and the examination of a device by directly sustaining the thrust load to be generated in working the groove by a rotary head through a working roll. CONSTITUTION: A plurality o...
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JP3267651B2 |
PURPOSE: To improve the work on the spot by axially supporting an auxiliary roller on a rocking arm pivoted on the main body of a device and making the roller capable of approaching and separating from a tube to be worked along a specifi...
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JP2002054627A |
To provide a tool for a fluid bearing dynamic pressure generation groove processing capable of maintaining a good processing accuracy for a long time.This is an invention of a tool for a fluid bearing dynamic pressure generation groove p...
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JP2002011524A |
To contrive improvement of a working precision and reduction of a forming cost, etc., of a notch by using a bar like support member freely insertable through a tip opening part of one leg part of a stay in a head rest stay.It is on a pre...
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JP3245429B2 |
PURPOSE: To provide a hard metallic rod or ceramic rod in which a helical inner bore is formed so as to be exact and uniform in pitch over the rod length. CONSTITUTION: When producing the hard metallic rod or ceramic rod which has a smoo...
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JP2001321836A |
To provide a roll grooving apparatus with structural improvement promoting tracking of a tube during a roll grooving operation.The roll grooving apparatus for rolling a circumferential groove for the tube is adopted to be mounted on a po...
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JP3222808B2 |
To provide a ironing and forming method of a spline tooth profile in the sheet metal made press formed part not generating an excess metal in a different part in level. Dies 24 (28, 30) having plural steps of ironing and forming surfaces...
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JP3224240B2 |
PURPOSE: To provide a composite working machine capable of punching a plate and working a V-shaped groove on it. CONSTITUTION: This machine is characterized in conbining a punching device 27 to punch a plate material W to form the plate ...
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JP2001239340A |
To provide a stable press forming for engaging concave portions of a supporting bar used for a headrest or a hand brake, without producing an extruding metal padding on an outer surface.An engaging concave portion 3 produced in a pipe ma...
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JP2001232423A |
To easily and precisely form a groove in axial direction of a tube.A mandrel is inserted into at least a section to be worked of a tube, and the tube and the mandrel are held so that they do not move relatively. The tube and a die are re...
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JP3198308B2 |
PURPOSE: To provide an elbow which is made of iron and has an annular groove and provide a working machine for making the elbow. CONSTITUTION: An elbow 25 which is made of iron and has an annular groove is equipped with a neck part 25A a...
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JP2001210283A |
To solve the problem that the bottom thickness of a groove for an explosion-proof valve in a bottom portion of a battery can is changed with the fluctuation of the bottom dead point of a punch due to the thermal expansion of a sliding pr...
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JP2001203311A |
To prevent a connecting fault to a pattern at the time of mounting a substrate due to a burr generated lower than a lower surface of a lead in a method for cutting the lead tip of a semiconductor element loaded on a lead frame by an oper...
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JP3187805B1 |
[wrap up] [Task] No burrs are generated near the recesses of the pipe, the press device can be miniaturized, the durability of the core metal is improved, the separation work between the core metal and the pipe after punching is smooth, ...
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JP2001132736A |
To provide a device for manufacturing a fluid bearing, capable of independently replacing parts of a tool for manufacturing the fluid bearing, and prolonging the service life of the whole tool by replacing only the worn part, when the pa...
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JP3135345B2 |
PURPOSE: To prevent the omission of tubes and the flaring of tube ends in a grooving operation for tube ends by making the driving roller for a tube to be worked a special shaped roller in the direction of an axis line. CONSTITUTION: The...
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JP2001018014A |
To completely prevent burrs generated in an outwardly expanding manner toward both ends of a stepped groove during the pressing operation by machining a surface passing a part forming an end face of the groove after the forming is comple...
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JP3109732B2 |
To provide a cold roll forming device with which plural products different in dimension, thickness and cross-sectional shape are formed with the forming rolls of the same kind. Plural 1st and 2nd movable roll stands 19, 20 are erected on...
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JP3103991B2 |
PURPOSE: To provide a manufacturing method for a deformed can without damaging the inner and outer surfaces of the can body when a recessed part is formed on the side face of the can body. CONSTITUTION: While the can body 2 filled with c...
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JP2000512552A |
PCT No. PCT/NL97/00150 Sec. 371 Date Mar. 4, 1999 Sec. 102(e) Date Mar. 4, 1999 PCT Filed Mar. 25, 1997 PCT Pub. No. WO97/36702 PCT Pub. Date Oct. 9, 1997The present invention relates to a method for forming weakenings in a metal plate (...
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JP2000263140A |
To improve the working efficiency for a work by simultaneously executing working a V-groove and bending with one device without using another device for working the V-groove. This device has a top die 31 which is vertically movable, bott...
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JP2000210723A |
To provide a grooving tool for forming a circumferential groove for fixing a joint to a thin wall pipe used for a gas pipe or the like. This tool is the pipe grooving tool which is attachable to a device provided with a chuck which is dr...
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JP2000197922A |
To provide the core and device for forming the recessed part of a hollow shaft, and the method for forming the recessed part by which the recessed shape of a surface of the hollow shaft can correctly and efficiently be pressed. This holl...
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JP2000193169A |
To execute a hose mounting work without being affected by the other working processes, such as a bending, heating or the like by forming at least one recessed part in a circumferential direction on a position separated from a point at a ...
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JP3049572B2 |
PURPOSE: To facilitate the preparation and execution of an operation and to improve the safety. CONSTITUTION: In this roll grooving apparatus 10, a lower housing 12 is connected to an upper housing 18 with a pivot pin 56 so as to be swin...
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JP2000129671A |
To provide a steel-pipe pile with a knot, by which force to be transmitted from the peripheral surface of the steel-pipe pile to be buried into a ground is increased and large bearing capacity can be displayed when the steel-pipe pile is...
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JP2000126823A |
To prevent a change of an outer size of a hollow shape stock caused by a swelled part owing to lifting up of both the sides of a recessed part generated when a recess is worked by a punch in the case that a groove-shaped recessed part is...
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JP2000117375A |
To form a groove in a circumferential surface of a hollow columnar member without deforming the member.Firstly, a groove 2 is formed along a specified pattern 2M on one surface of a metallic sheet 1 in a grooving process. Then, the metal...
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JP2000079423A |
To remove oil contents on the surface of metal and to improve the adhesiveness of ink by forming hairlines on the surface of a metal sheet such as aluminum foil and to prevent blocking and to improve the adhesiveness of ink by forming ha...
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JP2000005825A |
To prevent circumferential variance of depth and width dimensions of an annular groove and spiral deviation by rotating a face plate, dies, copying rolls and an air cylinder along an outer peripheral direction of a steel pipe by means of...
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JPH11347641A |
To easily and inexpensively form beads which are applicable even to a gasket having a large and complicated bead shape and which are lightweight, easy to handle and have even a complicated curve in a plan. One end side parallel to the lo...
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JP2986771B2 |
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JP2985702B2 |
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JPH11514075A |
A bearing shell with at least one retaining cam which, when looking down on the partial surface of the bearing shell, has a rectangular external contour line and an indentation on the inside, the indentation being at its largest around t...
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JPH11314128A |
To manufacture a pipe having a longitudinal groove in an inner surface of an intermediate part in the longitudinal direction by a regular working method suitable for mass production, and in a small number of working processes. In a first...
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JP2974049B2 |
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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JP2966299B2 |
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JPH11277153A |
To provide a constriction of a thickness excellent in durability as well by subjecting a cylindrical member to pressurization in its longitudinal direction from at least one end face thereof while rotating the cylindrical member and appl...
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JPH11277165A |
To obtain a container which has a sufficient spring effect and excellent durability by a roller which starts pressing in the state that its two members are installed to the revolving shaft of the roller in such a manner that the distance...
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