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JPH06198349A |
PURPOSE: To adequately bend a hollow material without generating wrinkles and recessed parts. CONSTITUTION: A mandrel 4 consists of a deflectable part 2 and a drawing bar 3. The deflectable part 2 consisting of an inner member 9 with mul...
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JPH06185687A |
PURPOSE: To provide a pipe which is laid smoothly along a wall surface, which is made of lead, being incorporated in a wash stand, a closet or the like, and from which a water drain or ventilating pipe is formed having a curve with a pre...
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JPH06182431A |
PURPOSE: To efficiently produce intricate tubular articles by using a pipe material of copper (alloy) or Al (alloy) as an arbor and forming a film of boric acid (.salt) on its surface, then inserting the pipe material into a metallic tub...
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JPH06170473A |
PURPOSE: To shorten the time for production of a tubular member by forced feeding fluid between both tubes after bending a workpiece, then expanding the tube on an outer side in at least a portion in a longitudinal direction. CONSTITUTIO...
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JPH06170449A |
PURPOSE: To provide a bending method by which an aluminum or aluminum alloy shapes having plural hollow part train is satisfactorily bent using rosary type cores. CONSTITUTION: Plural rosary type cores 4 connected with a connecting body ...
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JPH06505199A |
Apparatus for bending elongated members transversely to a web thereof without substantially altering the cross-sectional configuration thereof including a flexible form having a plurality of pivotal seats and flexible plates. Flexible ma...
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JPH0642967B2 |
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JPH0641009B2 |
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JPH06137468A |
PURPOSE: To speedily perform bending piping work, prevent dewing, and enhance corrosion resistance by disposing synthetic resin layers at the inner and outer surfaces of a metal tube, forming a temperature keeping layer at the upper surf...
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JPH0635017B2 |
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JPH0615693B2 |
The invention concerns a method and apparatus for thermally treating cast-iron pipes formed in a continuous casting die. The pipe or tube undergoes tempering by passing through a vat which is located downstream from the continuous castin...
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JPH0647452A |
PURPOSE: To bend a hollow or a semi hollow work without generating a recess or an undesired deformation at the part to be bent by arranging plural numbers of mandrel places in series, and linking in freely and mutually bendable. CONSTITU...
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JPH0647451A |
PURPOSE: To bend a work without generating a recess or a deformation on a bending scheduled part by forming plural numbers of mandrel parts to be inserted in each hollow part and semi-hollow part of the work in a proper state to a branch...
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JPH0631349A |
PURPOSE: To provide a method, for retaining the hollow part of a hollow lever material, in which an insertion is made into the hollow part and is made the most suited for retaining the shape of the hollow lever material, in bending the h...
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JPH06255B2 |
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JPH0593619U |
[Purpose] Obtain a tool that can easily and reliably bend a lead pipe in a short time without requiring skill. [Constitution] One end is formed as a horseshoe-shaped support portion 4, and the other end is a tubular body portion 5 that c...
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JPH05287434A |
PURPOSE: To produce a magnetic material increased in saturation magnetization, having high magnetic transformation temp., and excellent in oxidation resistance at a low cost by infiltrating elements, such as H, into the lattice of an int...
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JPH05285547A |
PURPOSE: To make a bending possible in which the length between both ends of a pipe, which is bent in the same direction at both ends, is always accurate. CONSTITUTION: The method is constituted of a process in which one end of the pipe ...
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JPH0576387B2 |
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JPH0576384B2 |
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JPH0576386B2 |
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JPH0539797Y2 |
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JPH05245542A |
PURPOSE: To bend a material for pipe having a crossing face crossing a bending direction without generating a flow caused by a wall sinking. CONSTITUTION: When the material for pipe 1 made of a flexible material having crossing faces 7 a...
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JPH05212451A |
PURPOSE: To bend a long size shape simultaneously, symmetrically or nonsymmetrically, in a single same operation by fixing a hollow long size shape and making a clamping head turn around a bending tool in the second direction supported o...
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JPH05200832A |
PURPOSE: To provide the method by which the core material for the bending of a plastic pipe is cheaply produced. CONSTITUTION: The molten resin extruded from the barrel 1 of an extruder is sent into a mold 2 provided with a plurality of ...
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JPH05200437A |
PURPOSE: To bend a fine tube nicely without causing change in material nor deformation in cross section by inserting liquid into the tube, freezing it in the tube, then, bending the tube, thereafter, dissolving the freezed liquid and eha...
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JPH05169145A |
PURPOSE: To provide a bending method for round pipe, by which bending direction and curvature are freely changeable and by which thickness deviation is made small even if the curvature is set large. CONSTITUTION: The outer side part A of...
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JPH05146838A |
PURPOSE: To bend an aluminum light metal material of an automotive bumper, etc., having a box shaped section and bent surface different in curvature on its inside and outside faces without generating a crack and a wrinkle. CONSTITUTION: ...
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JPH0533914U |
[Purpose] When the inner diameter of the pipe is maintained and a bend is formed, the outer peripheral side of the inner wall of the pipe is guided by a predetermined curvature surface to prevent the pipe from being crushed and processed...
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JPH05104152A |
PURPOSE: To prevent the generation of crush deformation and cracking by filling the hollow part of a shape on a side generating compression stress with a specified amount of a 1st filler exhibiting deformation resistance and on a side ge...
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JPH05104156A |
PURPOSE: To automatically insert and draw out a core by dividing a segmental die core into at least three groups of cores, supporting the groups of cores on both end sides as sets and providing an intermediate part core moving mechanism ...
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JPH0596332A |
PURPOSE: To provide a method for drawing and bending a round pipe which can reduce the thickness reduction ratio of the pipe thickness of the outside to be bent drastically, therefore, use a pipe stock comparatively small in thickness fr...
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JPH0576946A |
PURPOSE: To provide a manufacturing method for a pipe bend which allows a very precise advance, can be automated, and as a result, is provided with a considerably improved calibration quality. CONSTITUTION: In the manufacturing method of...
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JPH0576943A |
PURPOSE: To prevent inside wrinkles and outside cracks from being generated by positioning reinforcements and bending the shape material so that a specified area in this inner part is occupied and does not move on one side part of the in...
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JPH0510979Y2 |
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JPH0510981Y2 |
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JPH0510980Y2 |
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JPH0538522A |
PURPOSE: To provide combined forming method, in which high precise bending work is executed to a material to be worked and crack is not developed and strain-releasing work is made to unnecessary. CONSTITUTION: For example, laser beam as ...
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JPH054892Y2 |
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JPH04361833A |
PURPOSE: To obtain a reinforced structure having good outward appearance by executing bending work to a shape bringing into the fixed shape after inserting and setting a faucet joint core material into position at joint part of a hollow ...
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JPH04344834A |
PURPOSE: To provide the method for bending a multilayered tube with high accuracy without causing the generation of a wrinkle, etc. CONSTITUTION: The bending method for a multilayered tube is a bending method for a multiple tube 1 in whi...
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JPH04339521A |
PURPOSE: To improve slidability between a pipe and a mandrel, to reduce bending moment and to prevent dent, etc., by adding ultrasonic oscillation to the mandrel. CONSTITUTION: One side of a half of the coolant pipe 5 is held with a bend...
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JPH04327320A |
PURPOSE: To prevent the tube from being deformed eccentrically at the time of bending of the tube by constituting the whole mandrel of a flexible member, and forming it to a sandwich structure by a metallic plate. CONSTITUTION: A square ...
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JPH04125014U |
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JPH04322824A |
PURPOSE: To provide a method and a device for bending a U-rib formed by curving U-rib used as a reinforcing stock of a bridge, etc., by overheating one side wall from the inside, in the U-rib. CONSTITUTION: A plane bending device 2 for a...
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JPH04309415A |
PURPOSE: To offer the bending method of an aluminum section which is excellent in workability of cold bending, and also, causes no problem for environmental sanitation, and is excellent in profitability, as well, and moreover, to offer t...
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JPH04294827A |
PURPOSE: To bend workpiece having hollow cross section into various radiuses without filling material into the hollow cross section by filling the hollow cross section of a workpiece with a base mandrel and pushing the mandrel into a ben...
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JPH04258318A |
PURPOSE: To execute surer spatial rolling and stretch-bending by moving a bending mandrel station in agreement with the movement of a roll which is pressed from the outside onto the mandrel bending station. CONSTITUTION: One end in the l...
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JPH0438888Y2 |
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JPH0457408B2 |
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