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Patent Searching and Data


Matches 651 - 700 out of 2,841

Document Document Title
JP3776411
To provide a coiling bender which can automatically form the internal piping etc., of, for example, a water heater by subjecting a pipe-shaped work to prescribed bending and can form bending sections to prescribed shapes. The stationary ...  
JP3776605
To provide a device for bending a bar stock, capable of bending a bar stock such as a frame welded to a shell of a hull automatically into an optical shape. On the inside of an outer framework 4, through a spherical bearing composed of s...  
JP3773735
To conduct a desired bending by predicting a spring back angle in a high precision without conducting bending trial. As a spring back angle generated in bending a hollow shape 1 made of metal, an angle δθ satisfying the formula 1 in th...  
JP3773736
To predict a bending radius at a buckling limit of a shape made of aluminum alloy in a high precision. For a bending radius at a buckling limit in bending a shape made of aluminum alloy, a bending center radius R satisfying the formulas ...  
JP3773307
To provide an equipment capable of effectively controlling generation of sectional deformation and wrinkles with a simple structure. One of a pair of shut-off members 50, 52 to be inserted in a tube 4 across a part to be bent of the tube...  
JP3773311
To restrain the generation of cross section deformations and wrinkles with a simple structure and process in the case of bending a double tube. In the case of bending the double tube by holding the double tube 4 having an outer tube 4a a...  
JP2006043765
To provide a method for bending a pipe by which the occurrence of wrinkles on the bent inner side of the thin-wall pipe is prevented during the bending in a comparatively large bend radius, and to provide an apparatus for bending the pip...  
JP2006043774
To provide a bending machine with which automatic clamping to a die is also made possible for large tubes.A vise for clamping a slender workpiece to be bent on the die 2 of the bending machine is provided with a movable jaw 35 on which a...  
JP2006043767
To provide a method hot-bending a metallic tube by which the flattening of the metallic tube is suppressed with a device arranged inside the metallic tube and also this suppression is performed while preventing the generation of irregula...  
JP2006035235
To easily and surely form a small-diameter part, which is made eccentric, integrally by applying simple cold plastic working to a metallic tube material.A method for working a metal tube is used for forming a tapered part 10 and a small-...  
JP2006035242
To provide a hollow shape bending device in which a plurality of hollow shapes of different width can be treated with only one kind of a receiving member.The hollow shape bending device comprises a fixed holding plate (4) and a movable h...  
JP3759502
To provide a pipe in which a usable space can be secured by reducing a dead space of a pipe to be arranged in a heat exchanger or the like, a working method capable of molding the pipe in less working processes, and a working device. The...  
JP2006007311
To provide a piping member manufacturing method capable of easily manufacturing a piping member with a rubber hose interposed between metal pipes forming a bent shape by simple and less steps, reducing the manufacturing cost, and conside...  
JP2006000920
To obtain a bending apparatus with which a base stock is bendable even it is a base stock the cross-sectional shape of which varies in the longitudinal direction.A feeding mechanism 3 for feeding a long-shaped base stock 1 in the longitu...  
JP2006000921
To obtain a bending apparatus with which a base stock is accurately bent even when springback is generated.This apparatus is provide with a feeding mechanism 3 for feeding a base stock 1 in the longitudinal direction, a moving mechanism ...  
JP2005349473
To provide a ring with flange having various cross sections formed by a method employing an improved existing apparatus.The ring with flange is formed from a straight flanged member with U-shaped cross section which has a base section an...  
JP2005349426
To provide a bending apparatus for a polyhedron heat exchanger in which the need for components for connecting a plurality of heat exchanging parts by performing brazing work in one process is eliminated and the cost can be reduced.The b...  
JP2005349419
To provide a method of producing a heat exchanger tube capable of effectively stirring fluid passing through the inner and outer peripheries of the tube and having a high heat exchange performance, and to provide the heat exchanger tube....  
JP3748093
To obtain a rectangular section in which no shrinkage causing locally reduced wall thickness is generated in the case of bulging and forming a cylindrical member for vehicle body structure having a closed section of approximately rectang...  
JP2005337623
To provide a boiler panel having improved straightness and flatness.When an alloy coating 14 formed on the single face of the boiler panel 10 with flame coating is welded thereto in a moving heating method, the panel 10 is pulled in a di...  
JP3746949
To efficiently manufacture an elbow joint having a cladding layer of welding in the inner surface, simplifying the manufacturing process and facilitating the forming wok of a cladding layer of welding with thickness of the formed claddin...  
JP2005319490
To obtain a reinforcing bar cutting bender with which the bending work to 180° of the reinforcing bar is carried out by oneself, also the cutting work of the reinforcing bar is carried out and the unbending work of an over-bent reinforc...  
JP3738428
To execute bending work while rotating transporting rollers to the terminal part of a coil, to rotate the coil after that, to complete assembling simultaneously by carrying the coil with the transporting rollers. This device is a continu...  
JP3739485
To provide a method for executing a heat treatment so that a metallic bar stock having thin part and thick part becomes uniform mechanical characteristics. In the method for executing the heat treatment, a heating means 2 for partially h...  
JP3739751
To provide a technique for bending a metal straight pipe at a high speed without generating bellows or flattening. In the method for successively bending the pipe, a small region in the pipe axial direction of a pipe 13 is heated to a te...  
JP2005313217
To provide a duct bending device in which much labor of workers is not required even when a metal of large thickness similar to that of a straight tubular portion is bent, labor can be saved by achieving the bending work by less workers,...  
JP2005313214
To provide a bending apparatus with a cutting mechanism capable of efficiently performing bending work and cutting work.The bending apparatus has a bending die 4 corresponding to the bending shape and has a clamping die 6 which moves tow...  
JP2005305520
To obtain a bending device which has a simple structure and can bend a long workpiece to right and left directions.The bending device has a bending die 6 matching a bending shape and a bending arm 12 rotatable around the bending die 6. T...  
JP3737027
To provide a reinforcing bar bending device capable of avoiding any risk associated with a reinforcing bar delivering work by automatically delivering a reinforcing bar from a reinforcing bar placement part to a clamping device. In this ...  
JP3732931
To easily realize a structure, without suffering from restrictions a bit in terms of space and weight, which is capable of avoiding at least a bucking and a breakage of the curvature portion against a temporal heavy load to affect the me...  
JP3733176
To obtain a bending device for adding twisting to a base stock by a simple constitution. This device has a positioning jig 6 on which a clearance through which a base stock 1 to be fed is passed, a bending jig 12 on which the clearance f...  
JP2005279745
To provide a method for bending a large diameter steel pipe, a method that substantially retains the properties of the steel pipe, that has a high yield of materials compared with the conventional level and high post-machining dimensiona...  
JP2005280405
To provide a method for manufacturing a curved door sash for a vehicle capable of obtaining the curved door sash not formed with wrinkle on an inner side surface of a hollow wide part.A core material 30 comprising a nylon based resin mat...  
JP2005282832
To provide a shaft with a streak in an axial direction to which a material to be fit is fit, capable of improving centering precision and connection strength of the material to be fit and reducing manufacturing cost and equipment expense...  
JP3727409
To smoothly form a spiral hoop reinforcing bar without deformation. A shifting means 12 freely shiftable is arranged to a position crossed at the right angle to a body working surface 22a. Then, a shaking arm 14 is arranged so as to supp...  
JP2005271047
To provide a tool for checking the bending radius of a reinforcing bar capable of checking the bending radius in a simple manner after bending the reinforcing bar and a method for checking the same.The tool 1 for checking the bending rad...  
JP3725241
To enable improvement of feeding out efficiency, continuous working of long hours, whole automatic operation, etc., by straightening a coiled stock and feeding out a straightened stock to the tip of stock holding part. A straight stock W...  
JP3725842
To provide a pipe bending machine and a pipe bending method by which small radius bending process of pipes can be carried out without setting a push out space at a pipe end portion and yield rate can be improved. In the pipe bending mach...  
JP3721781
To improve the safety during an abnormal operation, the operability of a reaction receiving part, and the accuracy of the bending angle by an inexpensive means. A bending tool is provided with a wall 12d opposite to a reaction receiving ...  
JP3719928
To provide a bulging method capable of highly stretching a branch pipe without generating any wrinkles or cracks in a metal pipe. The metal pipe P having a bend or curved portion is subjected to the internal pressure to be bulged into a ...  
JP3718880
To save space for a bending part in a metallic pipe joint without using a brazing means. The method consists of a bending process, in which bending is done at proximity to the connecting end 12 of a metallic pipe 10 so that the inner rad...  
JP3718089
To provide a pipe forming device capable of executing a bend-forming of a pipe accurately and efficiently. The pipe forming device 10 is provided with clamping dies 11, 12, 13 and 14 for restraining a part in the axial direction of the p...  
JP3716949
To improve twisting velocity, to efficiently execute the bending and the obtain the high precise and high efficient working by arranging plural bending devices side by side and bending from the end part while delivering a working pipe be...  
JP3718247
PURPOSE: To prevent wrinkles on the internal bending part inside a polyvinyl chloride- coated steel tube from generating by compressing a part to be bent and the neighborhood into an oblong circular cross-section and bending the part alo...  
JP3715921
To provide a bending method of a flexible pipe by which the accuracy of bending is improved. Two points of the flexible pipe (2) which straddle over the part to be bent (a radius part 18) are fixed. When the flexible pipe is bent at thes...  
JP3716051
To realize the sharp folding without roundness and to improve working efficiency by applying the pressing force to a cutting blade first to perform the cutting leaving a bottom part of a rim, and folding a rib of reduced section modulus ...  
JP3714736
To provide a suspension arm whose weight is lightened as keeping necessary and sufficient strength. By a working method for bending a shape consisting of a web 2 and flanges 4, 5 on the plane of the web 2 while elongating both flanges 4,...  
JP3715077
To prevent the generation of dimensional error at the rear end part of a tube due to bending by providing hydraulic cylinders, hydraulic pumps and servomotors for driving the hydraulic pumps on each of a bending die, pressure die and boo...  
JP2005219091
To provide a device and a method for bending a long-sized material in which the angle (θ) of a die is not restricted by an increase in the offset amount (U) of the die even when the offset amount increases.In the device and method for b...  
JP2005219110
To obtain stable bending accuracy without generating wrinkles or deformation caused by the action of large compressive force on a part situated on the inside of the bending direction in a part to be bent even when performing a bending wo...  

Matches 651 - 700 out of 2,841