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JPH09234519A |
To easily bend a metallic tube into the desired shape without changing its sectional shape. A hollow metallic tube 1 and a seal member 2 to be arranged on the end part of the metallic tube 1 are provided, the heat-melting material 7 whic...
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JP2649479B2 |
PURPOSE: To facilitate handling of a filling material to be used for preventing the tube from being crushed at the time of bending the tube. CONSTITUTION: As the filling material to be inserted into a tube, a shape memory resin which sho...
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JPH09225540A |
To efficiently execute three-dimensional bending to an extruded shape in the integrated state by executing bending of small radii of curvature by another bending after bending bent parts having a large radius of cuevature and twisted par...
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JPH09225543A |
To prevent a work from being crushed at a final point part of the bending point in the bending work by holding the work from its inner side with a core body provided on a tip part of a core to be inserted into a hollow part of the work i...
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JPH09206853A |
To detect the condition of a device and the condition of a stock tube in the process to manufacture a bent tube to adjust a tube extruding device. An expansion plug 6 (working plug) is oscillatably provided on a front end of a core 5. A ...
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JPH09206841A |
To correctly form the shape of bending by providing a tubular stock with an external force in the direction opposite to the direction of providing the external force and compulsively forcing a bent tube to be a straight tube shape. A ben...
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JPH09206852A |
To manufacture a straight tube having high linearity and a bent tube having desired precise curvature by arranging a pair of rotatable guide rolls clamping a tube stock worked with a working plug at front of the working plug. The drift i...
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JPH09206854A |
To provide a tube extruding device capable of manufacturing a bent tube having different curvature by the place and a bent tube of the desired curvature with excellent accuracy. An expansion plug 6 (working plug) is oscillatably provided...
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JP2634384B2 |
PURPOSE: To carry out forming of complex curvature by using two sets of dies in the hydraulic forming for producing tube members of a vehicle exhaust or intake manifold. CONSTITUTION: The tube member 100 is fed to a hydraulic forming pre...
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JPH09182919A |
To provide a good product not having wrinkle and cross sectional deformation by specifying a rotation quantity of a moving die when bending a work with pushing through bending. When bending a work while executing pushing through bending ...
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JPH09174138A |
To provide a tube extrusion device eliminating need for mounting/ demounting of a working plug and not requiring a waste tube. When externally fitting a tube stock P from the rear end of a mandrel 40, a first clamp mechanism 25 is at unc...
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JPH09174139A |
To provide the tube extrusion device to produce a high precision bent tube and straight tube. An expanding plug (working plug) is arranged oscillatable to the front end of a mandrel. By pushing a tube stock P externally fitted to the man...
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JPH09174175A |
To provide a tube extrusion device which can prevent the increase of deflection caused by gravity even in the case the total length of a core metal is long, and can prevent the core bar and a blank tube from buckling accompanying work. A...
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JPH09174174A |
To provide a tube extrusion device which can prevent the occurrence of unexpected waviness or bending caused following play of a guide bush. A front supporting stand 3 has a pair of upper and lower holding bodies 31, 32 and a guide bush ...
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JPH09174173A |
To sufficiently supply a lube oil between a working plug and a blank tube in extrusion of the tube. A diameter expanding plug (machining plug) 5 is installed on a front end of a core bar 10. A blank tube P covered with the core bar 10 is...
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JP2623074B2 |
PURPOSE: To inexpensively and efficiently produce a U-type bend pipe with a comparatively large curvature without flat part, wrinkle, etc., by inserting a metal slender bar closely into the inside of a tube, bending the tube to the U-typ...
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JP2609205B2 |
PURPOSE: To enable bending of a metallic tube in normal temperature and to facilitate post treatment by sealing a fatty acid in a space between the outer tube and the inner tube of multiple mealltic tubes and carrying out bending in norm...
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JPH09122764A |
To improve the productivity in manufacturing a bent tube, and to save the cost by controlling a moving means in respective directions of a bent ring in an interlocking manner. A holder for supporting a tubular stock provided on an upper ...
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JPH09112755A |
To provide an integrally-formed metal eccentric tube and manufacture which has a flow path of a fixed length and makes the flow eccentric with a narrow space. A metal eccentric tube which is integrally formed by using metal raw material ...
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JP2602320B2 |
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JPH0994616A |
To obtain a bending method for a hollow double tube by which the energy consumption is reduced to a minimum and a cycle time is made short. A method consists of a process to insert a cylindrical bag body 7 having the flexibility and pres...
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JP2587054B2 |
To produce open-ended moulds for continuous-casting machines by means of a mandrel and die, a piece (1;4) of tube as preliminary material is removed from a tube store (SR) and, within one work system, the end of the piece (1;4) of tube i...
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JPH0938727A |
To provide a method of bending a tube body which easily takes off a holding member even when the radius of curvature at a bent part is small and need not piepare a means to seal the tube body, and to provide the holding member therefor. ...
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JPH0938726A |
To provide a method of bending a steel pipe which prevents the lowering of a pipe strength without impairing the appearance of the pipe at the time of bending the steel pipe for structural use and to provide a device therefor. Both ends ...
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JPH0929327A |
To prevent generation of cross sectional deformation and wrinkle of a shape in three dimensional bending of a hollow extruded shape of a cross section of non round shape. A projecting part 12 in contact with the outer face of a core 8 is...
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JPH0919714A |
To remarkably improve the reliability of a gas turbine by forming a bent tube having a special shape with high accuracy and at a low cost and using the bent tube having the special shape for the flow passage of the gas turbine. This devi...
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JPH0911722A |
To attain correct hydraulic forming by filling a pressure fluid in a blank, and maintaining a required internal pressure at the time of the blank being bent into a required shape. A trailing arm 10 is manufactured by applying fluid press...
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JP2566049B2 |
In the bending in a bending plane of a multiple tube (6) having a plurality of compartments (7,8) extending side-by-side in the longitudinal direction of the tube, a bending location is moved progressively along the tube and during bendi...
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JP2562175B2 |
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JP2558214B2 |
PURPOSE: To provide a truck for filling to cope with the change of the specifications of a work by a partial change. CONSTITUTION: A truck 12 for filling is split into a filling pallet 30, a truck body 31 and sealing pallets 32, a slide ...
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JP2558213B2 |
PURPOSE: To provide a pouring and discharging furnace having compact structure and high working efficiency and thermal efficiency. CONSTITUTION: The pouring and discharging furnace 2 has a three dimensional structure vertically arranging...
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JPH08300053A |
PURPOSE: To bend a hollow material in good quality without generating sinks or wrinkles on it and to technically and easily produce the hollow material having a core material being press-fit in a prescribed state in the inside. CONSTITUT...
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JPH08300052A |
PURPOSE: To secure mounting state of caps to both ends of hollow material and to very easily execute mounting/demounting of these caps. CONSTITUTION: Both ends of a hollow material W, in which a core material M of sand, steel ball, liqui...
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JPH08300051A |
PURPOSE: To provide an intermediate core device for bending which is easily inserted into a hollow material and has large squeezing resistance. CONSTITUTION: In a draw bender to bend a hollow material A, an inserting body 1 extending tow...
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JP2515547Y2 |
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JP2515797Y2 |
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JPH08276222A |
PURPOSE: To provide a bending method of a double pipe by which energy consumption is suppressed to the absolute min., cycle time is shortened and a charged material is surely discharged. CONSTITUTION: This method is composed of a process...
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JPH08252636A |
PURPOSE: To prevent buckling generated at the joining part between bent part and straight part in bending a steel tube with a roll bender. CONSTITUTION: In bending with a three roll bender, the joining part between bent part and straight...
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JP2518755B2 |
PURPOSE: To prevent generation of flaws and wrinkles and separation of the galvanized film on the inside surface of a pipe by using a specific hard plastic mandrel as a core mandrel and bending it without using lubricant. CONSTITUTION: T...
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JP2517830B2 |
PURPOSE: To enable forming of an elbow having a small radius of curvature by moving a forming rod to the center part in the longitudinal direction of a curved pipe and pressing by a forming punch to the longitudinal middle part of a form...
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JP2516244B2 |
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JPH08174082A |
PURPOSE: To provide such a core material for bending that easily allows a metallic hollow material to be bent in a complex shape, for example, in three dimensional direction and that is also inexpensive. CONSTITUTION: Plural core materia...
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JPH08132140A |
PURPOSE: To provide the working method, in bending and press forming, which is capable of preventing wrinkles and unwanted deformation as well as buckling of a hollow member and which dispenses with a post-treatment while providing a goo...
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JPH0899127A |
PURPOSE: Carry out the bend-working without changing the sectional shape of a work W and without a wrinkle furthermore, to easily manufacture in at a low cost and make withstand to a high load bend-working. CONSTITUTION: The constitution...
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JPH0899128A |
PURPOSE: To prevent wrinkle and deformation occurrence on a flange part at the time of the bend-working of an aluminum alloy shape to be used as structural member and automotive frame. CONSTITUTION: In a bend-working method making the fl...
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JPH0871656A |
PURPOSE: To provide a method for forming a U-shaped bent tube having an arc part of small radius, and a cooling water passage capable of easily arranged and formed in a gun arm and securing the cooling characteristic of the gun arm. CONS...
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JPH0871652A |
PURPOSE: To provide a bending method excellent in the bending limit and the shapeability in a method where an aluminum sheet is bent In the V--shape by a V-shaped die and a V-shaped punch. CONSTITUTION: When an aluminum sheet is bent in ...
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JPH0866727A |
PURPOSE: To enable bending with a small bending radius by forming a thin part in the inside of bending corner of a hollow material being a curved part, then bending the thin part. CONSTITUTION: Bending is performed on a hollow material 1...
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JPH0847724A |
PURPOSE: To easily and inexpensively obtain the bending workability by bending a specific Cr base steel tube at a specific temperature thereby satisfying the value of material specification of the mechanical property of a straight part a...
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JPH0847725A |
PURPOSE: To obtain a bending part having the high strength and the large deformation resistance by forming at least one or more wrinkle of a specific difference of elevation of a recessed part and a bulge part in an inside R part of the ...
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