Provided are a forming method and a forming apparatus which can secure strength after forming while suppressing deformation.

The forming method of the present invention includes a burring step and a pressing step. In the burring step, a branch pipe is formed by causing a cylindrical peripheral wall of a cylindrical member (workpiece) having the peripheral wall to project in an outside direction in a tubular shape. In the pressing step, a distal end surface of the branch pipe is pressed toward a proximal end portion of the branch pipe. In the pressing step, the distal end surface of the branch pipe can be pressed by an end surface pressing punch in a state where a burring punch is inserted in the branch pipe.

Provided are a forming method and a forming apparatus which can secure strength after forming while suppressing deformation.

The forming method of the present invention includes a burring step and a pressing step. In the burring step, a branch pipe is formed by causing a cylindrical peripheral wall of a cylindrical member (workpiece) having the peripheral wall to project in an outside direction in a tubular shape. In the pressing step, a distal end surface of the branch pipe is pressed toward a proximal end portion of the branch pipe. In the pressing step, the distal end surface of the branch pipe can be pressed by an end surface pressing punch in a state where a burring punch is inserted in the branch pipe.

A method and device for perforating a pipe wall. In the method, the pipe is moved in its longitudinal direction to a punching position comprising a cutting punch (2) and a three-part die (3, 5, 8) inside the pipe. The die (3, 5, 8) is expanded in the direction of movement of the cutting punch by means of the wedge surfaces (8a, 8b) of a wedge (8) between the die parts (3, 5) by moving the wedge (8) in a first direction of transfer towards the free end of the die. The cutting punch (2) is used to punch a hole in the pipe wall, which is supported by an expanded die (3, 5, 8) during punching, whereupon the piece punched off from the pipe falls into the hole (16) of the upper die part (3), The die is contracted by moving the wedge (8) in a second direction of transfer by a first transfer distance. The die parts (3, 5) then turn in an articulated manner towards each other and out of contact with the inner surface of the pipe. The perforated pipe is moved away from the punching position in its longitudinal direction and the pipe is moved to a position for finishing the rims of the hole. The lower die part (5) and the wedge (8) are further moved together in a second direction of transfer by a second transfer distance, whereupon the base of the hole (16) opens and the piece punched off from the pipe falls through the hole (16).

The disclosure relates to systems and methods for machine-cutting workpieces in plate form or bar form and also to a machine tool, with a laser machining device, and a workpiece support, by which a workpiece to be machined in the laser machining device is received, and with a workpiece moving device, by which the workpiece to be machined is held and moved in relation to the laser machining device, wherein with a machining head a laser beam is directed onto the workpiece to be machined and a clearance or recess is introduced into the workpiece and the clearance is machined with a flow drill and widened to a final size of a borehole.

A method including punching a first hole in a parent sheet metal, such that a substantially round section with a first diameter is removed from the hole, forming a second hole by inserting a mandrel into the first hole, causing a portion of the parent sheet metal to deform in a downward direction and increase the diameter of the first hole to a second diameter, the deformed portion of the parent sheet metal is substantially perpendicular to the parent sheet metal, forming a thread into an interior sidewall of the second hole, and forming the parent sheet metal into a water tight manifold.

A hybrid fluid-flow assembly having a base fitting that has been formed by axial load bulge forming from a sheet of metal, and a custom fitting that has been machined from a shaped-memory alloy. The input port of the custom fitting is connected to the output port of the base fitting by an interference fit. The interference fit may be formed by cooling the custom fitting to a temperature below its transition temperature, deforming the custom fitting so that the diameter of an inlet port is slightly larger than an output port on the base fitting, installing the input port of the custom fitting on the output port of the base fitting, and allowing the custom fitting to warm to room temperature. The shaped-memory alloy swages and coins the outer surface of the base fitting at the interface of the ports, thereby forming a compressive, interference fit.

[SUMMARY]

The present invention is capable of manufacturing an integrated tee type pipe by forming a molding pipe part, with pulling a periphery of a molding hole and protruding it to the outward direction through a pressing device and a molding device, while forming a molding hole of a predetermined shape on an upper side of a straight pipe; and manufacturing a tee type pipe that ensures robustness, productivity, and workability, accordingly.

[SUMMARY]

The present invention is capable of manufacturing an integrated tee type pipe by forming a molding pipe part, with pulling a periphery of a molding hole and protruding it to the outward direction through a pressing device and a molding device, while forming a molding hole of a predetermined shape on an upper side of a straight pipe; and manufacturing a tee type pipe that ensures robustness, productivity, and workability, accordingly.

A heat exchanger tube has a tube end having two extended portions substantially opposite the other around the periphery of the tube end, and two shortened portions, each positioned between the two extended portions and substantially opposite the other around the periphery of the tube end. The tube end may be formed by removing opposite portions of the tube by cutting a disc-shaped portion with a generally smoothly curving periphery along a major portion of the width of the tube. Each tube is oriented within an opening in the header wall of a heat exchanger assembly having a header portion integral with a tank portion, such that the tube end two extended portions are oriented substantially perpendicular to the direction of fluid flow within the header and the tube end two shorter portions are oriented substantially in the direction of fluid flow in order to reduce interference with fluid flow.

A device for a plumbing installation, the device, for example, may be a valve, such as valve (1), or a fluid flow meter (6), and has a casing (10) that is hydraulically formed from metal tubing so as to have a wall surrounding a void interior. The casing (10) is provided with one or more formations, such as shoulders (64) and (65) and at least one inlet opening (14) and at least one outlet opening (18). A cartridge (12) is at least partly located in the void interior of the casing (10). The cartridge (12) has at least two openings, being a first opening (20) and a second opening (22). Seals (46), (48) and (50) are provided between the casing (10) and the cartridge (12). The cartridge (12) is accommodated in the casing (10) by the one or more formations of the casing (10). The cartridge (12) is provided with the operational components of the device (1). The inlet opening (14) of the casing (10) and the first opening (20) of the cartridge (12) are in fluid communication. Similarly, the second opening (22), of the cartridge (12) and the outlet opening (18) of the casing (10) are in fluid communication. A fluid flow path is thereby created through the device (1) from the inlet opening (14) of the casing (10), through the cartridge (12), to the outlet opening (18) of the casing (10).