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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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JPH11277149A |
To make it possible to inexpensively produce a sensor ring by pressing and to improve the detection accuracy of a detecting speed of the rotating speed by bending a plate material from the position of a groove of an annular ring with the...
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JPH11277152A |
To make it possible to form a dynamic pressure groove of a desired shape and depth in an easily plastically deformable layer by lowering a yield point by sintering, thermal spraying, etc., to form the easily plastically deformable layer ...
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JP2957049B2 |
PURPOSE:To form plural drawing grooves on the outer circumferential surface of a tube like member to be worked leaving intervals in the axial direction without defective forming at the same time, improve the working efficiency and improv...
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JPH11254032A |
To obtain a metal tube whose inside is partitioned with partition walls extending in the axial direction of a tube. In this metal tube, the inside of the tube is partitioned into plural flow passages D1, D2 with partition walls t2, t3 ex...
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JPH11257437A |
To provide a sticking type balance weight to facilitate cutting and be excellent in productivity and to provide its manufacturing method. This wheel balancing weight comprises a weight body 20; and a pressure sensitive adhesive double co...
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JPH11248382A |
To enhance heat exchange performance and to prevent defective joint by providing a protrusion projecting toward the refrigerant passage side on one wall face of a flat heating tube for heat exchanger produced by bending a sheet of an alu...
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JP2948515B2 |
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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JPH11204702A |
To provide a high heat conductive heat dissipating substrate having at least one groove provided with flatness for sufficiently and closely sticking parts loaded on a metallic substrate and a role for easily and precisely recognizing the...
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JP2926265B2 |
The invention relates to a device for manufacturing a groove bearing formed with pumping grooves. The device comprises a hard pin (5) around which, or a hard sleeve in which, a cage (7) is arranged which has one or more annular patterns ...
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JPH11197739A |
To reduce vibration and noise even in applying grooving work at a high speed and to conduct the grooving work precisely and at a high speed. An input shaft 39 supported to a gear case 26 is rotated by a motor 37, a shaft member 40 nearly...
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JP2920130B1 |
To provide a working method for manufacturing a hollow cylindrical tube which is excellent in durability, has sufficient spring effect and is provided with a constriction whose tip part is thicker than the foot part. This method is a wor...
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JPH11179468A |
To provide a groove forming method producing a groove which sufficiently satisfies a dimension tolerance, is easy to produce, leaves no burr and does not damage an O ring mounted therein. When forming a groove in a peripheral direction o...
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JP2914958B1 |
[wrap up] [Task] The present invention relates to a pipe end grooving device, and an object of the present invention is to realize a pipe end grooving device capable of preventing the pipe end from expanding in a trumpet shape when groov...
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JPH11173324A |
To provide a shaft member for a business machine to provide stable and excellent precision and a method to facilitate manufacture of the shaft member for the business machine. A straight metallic pipe 1 in a hollow round shape in cross s...
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JPH11123458A |
To improve the accuracy of a bending position in manual bending of a metallic sheet by forming ruled lines consisting of V-shaped grooves along the bending position of the metallic sheet. Plural slots 1b are formed along the bending posi...
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JPH11123488A |
To efficiently manufacture a steel strip having deformed section to be used for a bearing retainer, etc., through roll forming. A dissimilar backup roll 30 and a flat backup roll 40 are respectively arranged on a deforming work roll 10 a...
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JPH11114630A |
To effect beading for a shorter working part than a plate width of a working stock and to reduce a die cost by pressure holding a plate stock between a pinch roll and a die roll which are vertically opposite each other and freely rotatab...
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JP2885006B2 |
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JPH1177210A |
To continuously achieve the form rolling of a plurality of groove parts by turnably and reciprocally providing a ball holding member to support a form rolling ball mounted in a guide hole of a tool shaft in a projecting manner to easily ...
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JP2863722B2 |
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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JP2864299B2 |
PURPOSE:To prevent the outer diameter of the opening of a battery case from expanding by mounting at least two stepped rollers at equal intervals on a concentric circle vertical to the central axis of the battery case when an annular gro...
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JP2859561B2 |
The method for embossing a protrusion into a sheet-metal blank with thickness variations is characterised in the fact that the blank (4) is transported along a transport section, and is embossed without interruption of the transport proc...
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JP2851570B2 |
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JP2829830B2 |
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JP2828480B2 |
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JPH10296344A |
To form a straight thin wall part between two ends of a rigid plate by using a die on which a narrow width straight projection with a height lower than a clearance is formed on one side inner face of a pair of plane like pressing plates ...
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JPH10296345A |
To provide a forming method to bulge a difficultly processable material one by one. In a method for successively bulging a metal sheet where there is a lower die or a lower punch, the metal sheet to be formed is fixed on a table and a fo...
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JP2821998B2 |
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JP2821995B2 |
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JP2821994B2 |
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JP2809842B2 |
PURPOSE:To easily form the recessed part on tube material by bulging one part of the tube material, forming the bulging projection, pressing the pressing component to this bulged projection and projecting the above bulging projection inw...
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JPH10263603A |
To provide a rolling method for forming grooves on the surface of a metallic plate by which high fins for tubes with internal grooves are obtained without wearing the surface of grooved work rolls. At the time of forming the grooves on t...
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JPH10244321A |
To raise the strength of a tube and to show the feature on its design. In a tube 1, two pieces of cores 9 of facing toward the longitudinal direction are fitted by mutually separating on both side parts of the inside of an exterior tube ...
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JP2791924B2 |
A short cylindrical and thin sleeve bearing including a radial bearing portion of a dynamic pressure type on which grooves are formed is worked with high accuracy. Grooves are formed on an inner peripheral surface of a blank by a groove ...
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JPH10216847A |
To restrict the introducing cost of a new press machine or a roll forming machine for forming a recess on a metal sheet and to restrict the cost for newly introducing or updating a forming die. This method is composed, at least, of a pai...
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