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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...
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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...
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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 ...
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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,...
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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...
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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...
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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...
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JP2005219090 |
To provide a bending apparatus and a working method of a long size material by which compressive stress itself, which becomes a problem in push-through bending work using a conventional six-axis parallel linkage, which is generated durin...
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JP2005219059 |
To provide a reinforcing bar feeder of a reinforcing bar bending machine capable of preventing a reinforcing bar from being turned in the circumferential direction while the reinforcing bar is advanced when the straight reinforcing bar o...
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JP2005211970 |
To provide a manufacturing method of a safety net metal fixture with an excellent practicability, which can manufacture the safety net metal fixture capable not only of executing a superior locking function of a safety net but also of el...
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JP3704781 |
To provide a pipe working method, by which an elbow-shape having extremely small roundness can be obtd. regardless of expanding quantity of a material without arranging special equipment and mechanism, such as insertion of an elastic bod...
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JP2005205662 |
To provide a method for easily molding a pipe member by performing the bending processing of a base pipe by a simple constitution, and an apparatus therefor.The base pipe P is charged in a mold 1, which has a charging port 10 formed corr...
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JP2005205492 |
To provide a manufacturing apparatus and a manufacturing method of the bending part of a multihole tube by which a good bending part is formed without deforming the bending part of the multihole tube the inside of which is divided with c...
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JP2005199288 |
To provide a pipe bender for manufacturing a bent pipe with high productivity by suppressing the change in a cross section in bending part by the action of fluid pressure.First and second sealing members 30, 31 which are connected so tha...
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JP2005186126 |
To reduce a facility cost by utilizing a tilting device used in bending a pipe as a rotation means during laser-cutting, while using a laser beam for cutting a pipe and preventing an occurrence of collapse, deformation and burring of the...
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JP2005186139 |
To provide a reinforcing bar bender with which a mesh reinforcing bar is bendable to nearly 180° between side rollers and the mesh reinforcing bar is upward easily removed away from between the side rollers after completing bending.In t...
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JP2005186143 |
To enhance the production efficiency by rapidly applying lubricant to an inner surface of a tube when performing rotary draw-bending of the tube.A lubricant applying means 14 to apply lubricant to an inner surface of a tube is provided o...
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JP2005190073 |
To provide a stiffness analysis method which makes it possible to analyze the stiffness of a processed product at a designing stage prior to trial production in consideration of a decrease in moment of inertia of area due to a change in ...
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JP3696913 |
PURPOSE: To provide a bending device capable of improving the durability of a wiper die, easy in the machining of the wiper die and improved in the stability at the time of attaching the wiper die. CONSTITUTION: A bending die 1 correspon...
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JP2005177852 |
To provide an apparatus and a method for bending a bumper beam for a car with which the bumper beam for car can be bent with a small curvature radius.At first, a fitting surface 3 to the car body of the bumper beam 1 for the car, is plac...
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JP2005177838 |
To provide a tool for bending a reinforcing bar, the head portion of which hardly disengages from the reinforcing bar in a bending work of the reinforcing bar.The tool for bending the reinforcing bar has a head portion 1 and a rodlike el...
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JP2005169483 |
To provide a pipe bending apparatus which is provided with a stretch bending (draw bending) function and a compressive bending (compression bending) function and which can conduct the total process of bending by itself.The pipe bending a...
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JP3692345 |
To provide a knife bending mechanism which bends a long-sized sheet-like knife delivered in a longitudinal direction by pressing the knife by means of moving sections and which can remarkably bend the knife at a time and further which ha...
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JP2005161331 |
To suppress defective bending of a work 28.A bending device is provided with a turnable bending die 20, a fixing tool 46 to fix the work 28 to the bending die 20, a pressure die 30 to press the work 28 against the bending die 20, and a r...
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JP2005161325 |
To provide a pipe bending machine and a pipe bending method capable of preventing buckling and wall thickness reduction by controlling the pressure of a pressing die by a simple method.The pipe bending machine has: a bending die 1 having...
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JP2005161324 |
To provide a pipe bending machine capable of preventing buckling and wall thickness reduction when a pipe is bent, and a pipe bending machine capable of freely changing the circumferential length of the pipe.The pipe bending machine has ...
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JP2005161332 |
To obtain a rational bending condition with a small burden.Pipe data and bending condition data are input in a computer and stored (S10 and S20). The analysis by a finite element method is performed by utilizing the input pipe data and t...
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JP2005164102 |
To provide a high performance heat exchanger and its manufacturing method.The heat exchanger comprises an inner tube 25 in which a primary side fluid flows and an outer tube 22 in which a secondary fluid flows. The inner tube 25 is inser...
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JP2005161342 |
To rapidly obtain an adequate forming condition even when the material characteristics of a tube and the shape, dimensions or the like of a product are changed in the rotational drawing-bending.A tube is subjected to drawing-bending by u...
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JP3685526 |
To conduct a long-length pipe highly precise bending with good efficiently by constituting a chuck unit so as to be movable in the direction of the axial center. At the time of bending a pipe P, first a bending roller R2 for each bending...
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JP3686347 |
To provide a method capable of stably bending a metallic pipe so that wrinkles caused in the inner circumferential part of the bend of the pipe are formed into a uniform shape. A forming part 23 made into a wave shape is provided in a co...
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JP2005144514 |
To simply change the curvature in a shape steel for bending.The tip end part of the shape steel 1 supported with a supporting rollers 6 is held with a guide mechanism 10 and a clamp 35 arranged at the tip part of a rotating arm 30 sandwi...
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JP2005144469 |
To provide a bending device of a metallic bar stock with which the uniform heat treatment of the metallic bar stock with a heating/cooling device is attained even in the case the spring-out of the metallic bar stock can occur when releas...
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JP3681095 |
To provide a bent tube excellent in heat exchanging performance being used as a thermal decomposition reaction tube for producing ethylene. A bent tube 1 has protrusions 4 on the inner surface thereof. It is produced through high frequen...
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JP2005125384 |
To provide a press-forming method with which even a press-formed product which is difficult to form need not be divided into a plurality of pieces to facilitate the forming, and the pressed article can be easily formed by performing the ...
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JP3674091 |
To surely move a pipe into a recessed groove in which two or more pipes of a fixed die are placed by making the radius of curvature the larger as the recessed groove is located the lower, and providing an inclined surface between adjacen...
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JP3675033 |
To suppress the variation in the working accuracy of a material to be worked in case where a clamping member is inclined at the time of imparting tension. A vertical deflection angle detecting sensor 101 for detecting an angle at which t...
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JP3676139 |
To provide a method for preparing control data for pushing-through/ bending machines by which the control data for realizing pushing-through and bending work with high accuracy can be generated. In a local coordinate system yz which is s...
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JP3675556 |
To efficiently and rapidly process a hook by attaching a portable hook machine on a 90° pre-bent reinforcing bar, bending the bar with the rotation of a lever and machining the bar into a U-shaped hook. A reinforcing bar 2 which is pre-...
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JP3676871 |
To provide a bending device having a simple structure capable of easily and continuously performing two-dimensional and three-dimensional bending. In this device, the fixing end side F of the hollow double tube P is constrained with a be...
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JP2005118830 |
To provide a hollow shape bending method and bending die capable of improving working efficiency as well as maintaining machining accuracy, in bending a shape material having a hollow cross section, by attaching/detaching a core through ...
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JP3669472 |
To easily and surely bend a flanged metallic member while making the flange of the flanged metallic member such as a flanged hollow metallic extruded material made of aluminum alloy inside. In this bending method, compressive plastic def...
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JP2005081421 |
To provide a bending method of an aluminum alloy hollow structure by which even an aluminum alloy hollow structure material with a projected flange on inside of bending can be bent into a shape curved two-dimensionally or three-dimension...
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JP3660762 |
To prevent an unstable deformation in the case of cladding or bending the metal material of a square steel tube or the like. In the cladding method wherein the metal material 1 subjected to a compressing force P is heated with an inducti...
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JP3658940 |
To efficiently perform two dimensional or three dimensional complex bend-working with high precision by forecasting with high precision and easily the spring back quantity of the penetrating-bending of an extruded aluminum (A1) shape. Fr...
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JP2005074430 |
To provide a method for bending a piping joint for curved pipe path for performing even the bending work of a small curvature without breaking a base stock under a room temperature in the piping joint for curved pipe formable by bending ...
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JP2005074508 |
To reduce labor and manhours and shorten working hours in bending operation capable of preventing deformation generating after the bending operation.When an outer tube Po is bent, a pressure die 6 arranged immediately in front of the ben...
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JP2005074507 |
To provide a bending method, which prevents deformation on a tubular material after bending operation, reduces labor and man-hours, and shortens working hours.When an outer tube Po is bent, a crossed-section of a bending portion of the o...
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JP2005052854 |
To provide a tube bending apparatus the actuators of which are reduced and with which a highly accurate tube is manufactured even by unskilled persons because the apparatus is easily operated by manual work.In a tube bending apparatus wi...
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JP3648649 |
To simply hook with bending even a large reinforcing bar with a handy type machine of a small size and a light weight. The machine is provided with a hydraulic cylinder 11, a pair of hook plates 14 fixed on the hydraulic cylinder 11, a s...
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