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JP08047724 |
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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JP08039177 |
PURPOSE: To produce a cylinder like member for automobile body structure having an almost polygon like cross-section that a rib is formed in the inside curved to three-dimensional direction without generating wrinkles or buckling, etc., ...
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JP08033938 |
PURPOSE: To easily make a hole in a bent part with a small force by forming a recessed part from an outer circumferential part of a hollow shape, and making a hole in the recessed part. CONSTITUTION: An extruded hollow shape 1 is cut to ...
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JP08019820 |
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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JP08019821 |
PURPOSE: To prevent a crack and the occurrence of the wrinkle of a plastic pipe part by pushing a mandrel after filling a packing material into the plastic steel pipe, and at the time of bending, pushing the plastic steel pipe toward a c...
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JP08010857 |
PURPOSE: To uniformly and rapidly cool a large quantity of tubes with a compact tank capacity by supporting the plural tubes in an upright state on a framed truck, charging the tubes into a refrigeration chamber, blowing liquid nitrogen ...
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JP07328726 |
PURPOSE: To provide a pipe bending method by which extra small bending is smoothly performed and a pipe bending device which is easily manufactured and surely usable. CONSTITUTION: The device is provided with a supporting jig 1, forming ...
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JP07328725 |
PURPOSE: To suppress the compression of a resin composite tube, and to bend the tube without the occurrence of a failure such as rupture, various deformations, etc., by holding the tip part of the tube into which a plug with a diameter l...
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JP07323335 |
PURPOSE: To provide a method for bending a hollow member where the mass production is possible, and the wrinkle depth is obtained so that the shape of the hollow member is hardly damaged even when the wrinkle is generated by preliminaril...
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JP07314051 |
PURPOSE: To provide a tube bending method of generating no reduction of thickness at the outer surface side of the tube at the time of bending the tube. CONSTITUTION: A wire 6 having elongation resistance and flexibility in the bending d...
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JP07314522 |
PURPOSE: To obtain a synthetic resin lining steel pipe having such structure as the synthetic resin lining layer formed on the inner face is not peeled off or broken when the pipe is bent through pipe bender system. CONSTITUTION: The syn...
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JP07308719 |
PURPOSE: To prevent the occurrence of rupture, crack, etc., and to bend a flange by bending a cylindrical member to which elongation equal to that generated by bending, is previously given to the part to be bent of a flange, and making t...
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JP07290156 |
PURPOSE: To prevent scratch, etc., at the inside corner of bending at bent part of pipe by notching the part of the inside corner of bending of a mandrel so as not to be brought into contact with the inner wall surface of pipe. CONSTITUT...
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JP07290157 |
PURPOSE: To provide a core bar for bending a pipe in an apparatus enabling the bending without occurrence of the shortage of oil and smoothly bending the pipe without deformation of crush, etc., due to elongation at the position bringing...
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JP07284855 |
PURPOSE: To provide a method and device for manufacturing a bent tube, in which the limit of a bend radius is improved, the ratio of uneven thickness of a bent tube manufactured is minimized, and also the outside diameter of the bent tub...
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JP07275958 |
PURPOSE: To maintain a specified spacing between inside and outside tubes and to bend the tubes to a prescribed shape by confining granular materials, such as sand, into a cylindrical insertion part of a forming tool and bending the tube...
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JP07265962 |
PURPOSE: To prevent the distortion, deformation and deterioration of a pipe due to high temp. by filling up a molten paraffin into a metallic pipe, bending the pipe after the paraffin is solidified and melting away the paraffin after wor...
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JP07224987 |
PURPOSE: To reduce passage resistance and disperse stress concentration by disposing a thick-walled part, satisfying a specific condition, on the inside of a bent part, disposing shift parts of specific length on both sides of the thick-...
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JP07214181 |
PURPOSE: To provide a folded sheet material having light wt. without developing strain, burning, etc., caused by high temperature of welding, etc., and its manufacturing method. CONSTITUTION: A thin and long pipe 10 is pressed toward the...
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JP07214179 |
PURPOSE: To provide a manufacturing method and a manufacturing device for bent pipe being suitable to the manufacture of the bent pipe having small inner diameter. CONSTITUTION: A float pipe-expanding plug 12 is inserted into the inner p...
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JP07214180 |
PURPOSE: To provide a manufacturing method and a manufacturing device for a bending pipe having non-round cross section in a good finishing condition. CONSTITUTION: A float pipe expanding plug 12 having non-round cross section is inserte...
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JP07214178 |
PURPOSE: To reduce the manufacturing cost at the time of working a round pipe to extremely small bending shape by obtaining the bending shape having extremely small rasius with one time of the bending work without developing crushed part...
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JP07178469 |
PURPOSE: To enhance the efficiency of tube length control in a tube bending mechanism by accurately controlling the orienting of the ends of a finite length segment, for example, of a U-shaped hairpin tube to a prescribed length. CONSTIT...
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JP07178470 |
PURPOSE: To efficiently manufacture a flat curved tube by inserting into a stock tube a flexible mandrel of the same height as that in the flat part of the product, and pressing the recessed side of the stock tube against the mandrel by ...
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JP07171634 |
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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JP07171632 |
PURPOSE: To provide a bending device of Al or Al alloy extruded material capable of bending to the prescribed shape even in a case of small bending radius or in a case of complicated shape. CONSTITUTION: An Al or Al alloy extruded materi...
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JP07171633 |
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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JP07148531 |
PURPOSE: To bend an extruded shape of a tubular member consisting of aluminum and its alloy and having a hollow part for which severe bending is requested and which has an intricate sectional shape. CONSTITUTION: The elongation and stren...
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JP07148530 |
PURPOSE: To prevent the generation of wrinkles by controllably arranging at least two mandrels relatively in the longitudinal direction of a tube during bending. CONSTITUTION: A DD tube 6 is provided with two single D tubes 7, 8, which a...
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JP07116741 |
PURPOSE: To facilitate the setting and changing of an appropriate core member in bending a tube of different diameter by making the core member to be mounted on the tip part of a supporting rod attachable/detachable in association with t...
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JP07116740 |
PURPOSE: To facilitate the changing operation of a mandrel by providing a projecting wall provided with a flange wall having a slit on the circumferential surface of a small diameter stepped part on the tip part side on a supporting rod,...
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JP07088565 |
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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JP07060367 |
PURPOSE: To provide the filling method of filler material in bending of an exhaust pipe capable of obtaining reduction of a number of processes, simplification of device for filling, reduction of the device cost and improvement of fillin...
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JP07039942 |
PURPOSE: To provide a method for bending metallic tube, which prevents burning flaws causing in a contact part between a plug and the inside surface of a tube and preventing the vibration of a mandrel connected to the plug by the use of ...
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JP07039943 |
PURPOSE: To provide the injecting and discharging method for a packing material which reduces working space and has a high working efficiency. CONSTITUTION: An injecting and discharging furnace 2 is three-dimensionally constituted by pro...
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JP07039976 |
PURPOSE: To highly precisely form a seat where the seat for attaching parts between bent parts of a bent double tube. CONSTITUTION: Seats are formed respectively on internal and external tubes 11, 14 in the straight tube state. Next, the...
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JP06339731 |
PURPOSE: To hollow up and deform without breaking in severe bending and bend a work into a bent article having a bent part of small radius of curvature by making a bending mandrel of extrusion products of nylon. CONSTITUTION: Because a m...
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JP06335729 |
PURPOSE: To provide the inexpensive method capable of smoothly bending a pipe and protecting the bent part light in weight without flattening or crushing the pipe by forming an insertion part to which plural flexible bar-like materials a...
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JP06335730 |
PURPOSE: To provide the inexpensive method capable of smoothly bending a pipe and protecting the bent part without flattering or crushing the pipe by using a spacer having an insertion part formed in a row of spherical bodies. CONSTITUTI...
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JP06328151 |
PURPOSE: To properly feed a pipe in the axial direction even in bending of plural places of the pipe, and to apply pressure in the axial direction without interference with a mandrel even in bending the vicinity of the rear end of the pi...
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JP06328150 |
PURPOSE: To properly feed a pipe in the axial direction even when bending plural places of the pipe and to easily apply pressure in the axial direction even when bending the vicinity of the rear end of the pipe. CONSTITUTION: This device...
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JP06320222 |
PURPOSE: To provide a core bar which can bend a tubular material easily three dimensionally, prevent deformation of a cross-sectional shape and draw the tubular material easily. CONSTITUTION: The core bar 20 consists of solidly bundled w...
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JP06315723 |
PURPOSE: To smoothly bend a tube without flattening or crushing a tube by the light weight and inexpensive spacer and to protect the part. CONSTITUTION: An inserting part 1 is composed of a bar like member having the flexibility, a tube ...
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JP06312221 |
PURPOSE: To obtain excellent workability at forming of Al/Al alloy extruded shape in particular for a case hard to work as well as a material to be formed having a complicated cross section. CONSTITUTION: For Al/Al alloy extruded shape, ...
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JP06304666 |
PURPOSE: To easily operate the bending and to reduce the residual stress in the time of bending a double tube inserting an internal tube inside an external tube. CONSTITUTION: An internal tube 2 is inserted inside an external tube 1 and ...
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JP06304667 |
PURPOSE: To bend a hollow work in a bent part without an unwilling deformation of a crush, etc., and together to efficiently and easily pull a mandrel after bending. CONSTITUTION: Plural abutting members 3 are arranged in a prescribed in...
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JP06292929 |
PURPOSE: To provide a device which is capable of forming complex-shaped frame members from a tubular blank. CONSTITUTION: A method for forming the frame members from the tubular blank 12 equipped with both ends is constituted of a step f...
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JP06285551 |
PURPOSE: To dispense with deburring and to dispense with bi-washing by fitting a straight tube into a straight hole of a closed half die, fitting a projecting part of one mandrel of a force-fitting implement into the straight tube, allow...
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JP06238352 |
PURPOSE: To efficiently form a high quality metallic tube in which a collapse, cracks, breakages and wrinkles are not caused on the bent part and which is provided with a small radius of curvature. CONSTITUTION: An approximate end part o...
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JP06234022 |
PURPOSE: To prevent the generation of a wrinkle or a deformation by inserting into a hollow part of a hollow shape to be made to an outer circumferential side in bending with a core metal whose clearance against the hollow part is larger...
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