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JPH0747180B2 |
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JPH0741310B2 |
A high-performance heat transfer tube for an evaporator of an air conditioning or refrigeration system is formed on a grooved mandrel that has a sufficient number of grooves, such as 60 to 90 for a 5/8 inch tube, to produce a small-pitch...
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JPH07100579A |
PURPOSE: To obtain a high precise rack bar by low pressing pressure at one process by pressing a cylindrical blank into a cavity having teeth line for forming the rack, which has higher parts and root parts paralleled in the pressing dir...
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JPH07100528A |
PURPOSE: To obtain a special shaped tube whose dimensions of corner parts are smaller and which is excellent in flatness in planar parts. CONSTITUTION: By rolling using a grooving roll and grinding, Vgrooves G1-G8 which are extended in t...
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JPH0760334A |
PURPOSE: To provide a production device of a tube with internal grooves which has an excellent radiating property, an excellent durability even when grooving is highly speedily made and a stable quality. CONSTITUTION: The device has a gr...
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JPH0760393A |
PURPOSE: To provide a groove of a specific shape and dimension where no force in the axial direction is applied to a chuck, and no sag and swell is present in the groove to be formed by moving the chuck according to the elongation in the...
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JPH0716740B2 |
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JPH078096Y2 |
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JPH0751753A |
PURPOSE: To obtain a device which expedites the change of a cage and balls and has a long effective by executing lubrication of a cage provided with a actuating member having a specific internal profile and all portions within the cage. ...
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JPH0710409B2 |
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JPH074635B2 |
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JPH0716662A |
PURPOSE: To improve parts life and machining accuracy of the device by forming a groove on the inside surface of the part to be machined of a tube through the rotation of a grooving plug as the tube to be machined is moved in the axial d...
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JPH073826U |
[Purpose] A plurality of irregularities formed on the surface of the work material are uniformly formed. [Constitution] The holder portion 26 of the die holder 22 slidably holds four dies 32 at 90-degree intervals with respect to the cen...
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JPH0716641A |
PURPOSE: To control slipping or rubbing on a contact part of a working roll and a back-up roll by arranging rolls having two different diameters in the longitudinal direction of the shaft in series as a 2nd roll and also making a 1st rol...
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JPH0712482A |
PURPOSE: To provide a heat transfer tube with an inner surface groove and a method for manufacturing the same in which performance is further improved without increasing a pressure loss and without increasing a processing load at the tim...
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JPH074884A |
PURPOSE: To improve both an evaporation efficiency and a condensing efficiency by a method wherein some large projections are formed at an inner surface of a metallic pipe with a specified spacing therebetween and a pair of small project...
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JPH0646575Y2 |
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JPH0646576Y2 |
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JPH06328153A |
PURPOSE: To form a steel strip with an irregular shaped section whose thick parts on the center side with plural the same sectional shapes, and a thick part and a thin part of edge parts positioned on both ends, are made continuous throu...
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JPH06264928A |
PURPOSE: To prevent seizure by engaging clinches of both the ends of a plate-shaped material with each other for forming a cylindrical shape, and providing a sliding surface with a partial groove which extends in a circumferential direct...
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JPH0669653B2 |
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JPH06190440A |
PURPOSE: To manufacture a steel tube with a projection by using a simple means at a low cost. CONSTITUTION: In a transferring process for a strip steel 1, a couple of pinching rollers 3 and 4 in which one is provided with a projection 5 ...
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JPH06179029A |
PURPOSE: To improve the manufacturing efficiency of a piston for a clutch. CONSTITUTION: In a manufacture of a piston 9 for a clutch, a process forming a boss part 18 by burring a circumferential part of a prepared hole 24 in a central p...
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JPH0642971B2 |
PURPOSE:To expand the life of a die for forming the tooth profile of a cylindrical body and to reduce the cost of the cylindrical body by inserting smoothly a punch having the tooth profile inside the cylindrical part of the cylindrical ...
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JPH06154890A |
PURPOSE: To provide a tube end part machine which can form an annular groove without generating a defect with a chuck on a bottom surface of the annular groove housing a packing. CONSTITUTION: An end part of a tube 3 is formed in a presc...
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JPH0618668Y2 |
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JPH06126353A |
PURPOSE: To economically attach a flange on a driving shaft or a bearing with out trouble in manufacture by regulating a size of the flange, the ratio of shaft diameter and the strength of the material quality of the flange. CONSTITUTION...
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JPH0618662B2 |
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JPH0671364A |
PURPOSE: To improve strength and tenacity and to impart sufficient joining strength by subjecting the combination body of the extruded material made of Al alloy and a sheet material made of Al alloy to bending in the longitudinal directi...
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JPH0613135B2 |
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JPH0647474A |
PURPOSE: To enable manufacturing a pipe having a vertical groove on its inner face of longitudinal intermediate part using a normal working method which is applicable to mass production. CONSTITUTION: On a first process, one end part of ...
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JPH065722U |
[Constitution] Place the pipe 1 on the receiving roll 3, and place the dimple roll 2 on it so as to hold the pipe 1. The distance between the receiving roll 3 and the dimple roll 2 can be adjusted by the bolt 4. The pipe 1 is passed betw...
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JPH0615354A |
PURPOSE: To inexpensively manufacture a stainless heat exchange tube which can cope with ammonium as a heat medium. CONSTITUTION: A stainless steel strip 41 is used as a blank. Parallel grooves 46 for expanding heat transmitting area ext...
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JPH0615353A |
PURPOSE: To manufacture a square tube excellent in flatness of a plain part, small in corner dimension and excellent in shape characteristic by butting two steel strips having a U-section each so that they face each other, then, welding ...
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JPH0593621U |
(57) [Summary] [Purpose] It is possible to form a high-precision recess on the hollow shaft, and after molding the recess, the split core metal is removed to reduce the weight of the product. [Structure] A columnar core metal main body t...
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JPH0543957Y2 |
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JPH0576634U |
[Purpose] Provided is a constriction processing device capable of constricting cans of different lengths without detaching the can body holding mechanism itself. [Constitution] When the length of the can body K to be processed is changed...
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JPH05261580A |
PURPOSE: To shorten the irradiating time and to reduce the cost by irradiating the laser beam and welding by making the recessed part of aluminum material generated during the press forming time as the beginning point. CONSTITUTION: When...
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JPH0571676U |
[Purpose] When temporarily assembling the heat exchanger tube, prevent the tube sheet from being misaligned and improve the adhesiveness between the dimples. [Constitution] A small protrusion was formed on one side of the dimple tip of a...
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JPH05228541A |
PURPOSE: To execute press bending and notching by one press die by forming a first working surface of the lower die to the surface exceeding 90° against the supporting surface for supporting a panel. CONSTITUTION: When the upper die 21 ...
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JPH05212470A |
PURPOSE: To largely lighten the input shaft and reduce the cost by splining with plural drawing and plural expanding processes and the plasticity deforming against the metallic tube blank. CONSTITUTION: The 1st process is that an end of ...
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JPH0527234Y2 |
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JPH05161935A |
PURPOSE: To provide a thread rolling machine which can work high accuracy threads with a simple structure. CONSTITUTION: There is a major diameter thread rolling die 2 which rotates integrally in the same axis with a turntable 1 supporti...
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JPH05161936A |
PURPOSE: To reduce the manufacturing cost by forming raggedness on the surface of a fin material, winding this fin material around a tube while the fin stock being bent and manufacturing a fin tube type heat exchanger by providing a cata...
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JPH05131221A |
PURPOSE: To obtain annular or arcuate metallic parts which are large in diameters and small in weight by bending a metallic sheet in a ring shape, connecting its end parts to each other, and machining projected and recessed parts of the ...
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JPH0542334A |
PURPOSE: To provide a composite working machine capable of punching a plate, working a V-shaped groove and bending the plate. CONSTITUTION: This machine is characterized in conbining a punching device 31 to punch a plate material to form...
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JPH0543941A |
PURPOSE: To improve the fatigue strength of shaft parts by blunting the sensitivity to notching in the stress concentrated part of the shaft parts. CONSTITUTION: In high strength shaft parts having a stress concentrated part formed by th...
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JPH059712U |
[Purpose] To provide a punch for grooving that eliminates deformation of the lead frame after grooving. [Constitution] Intermittently form protrusions for grooving only the necessary parts at the addition of the punch for grooving.
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JPH04367325A |
PURPOSE: To provide a plate provided with a bead which is free from a strain and a flaw, and has good appearance. CONSTITUTION: A work 1 is pressurized and detained by a load for generating frictional force exceeding the tensile strength...
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JPH04367328A |
PURPOSE: To provide a forming method which can attach easily a different member to a compact. CONSTITUTION: A forming die consisting of a receiving die 3 having a formed part 1, and a covering die 4 provided with a fluid supplying port 6...
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