The invention relates to the production of profiled hose nipples. The invention was based on the object of providing a method and an apparatus which allow hose nipples of the type outlined in the introduction to be produced in a simple manner such that the formation of burrs is avoided and there is no reduction in diameter. This object is achieved in that during the forming of pipe portions (1) in the apparatus (2, 7, 9) according to the invention in the region of the subsequent ring-shaped webs (4) of the nipple profile (3), the material of the pipe portion (1), at its outwardly pointing end (4), does not come into contact with the tool in the region of the parting joints (6) of the apparatus (2, 7). This can be realized by additional cavities (14) in the tool (2, 7).

A one-piece axle and a method of manufacture. The method may include providing a one-piece axle blank that has a shaft and a flange. The shaft may have a hole that may extend along an axis. The flange may extend radially outward from an end of the shaft. The shaft may be radially forged against a first mandrel to axially elongate the shaft.

A neck hole of a dispense tip is formed through a length of a body from an input end to an output end. An inlet hole is formed at a distal end of the neck hole, the inlet hole having a first inner diameter. An outlet hole is formed at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first. A first inner taper transitions the inlet hole from the first inner diameter to the second inner diameter. An outer taper is formed having a width that decreases along a longitudinal axis of the length of the neck hole at a distalmost end. The width of the outer taper is reduced at the distalmost end at the output end of the body of material from a first outer width to a second outer width less than the first outer width.

A neck hole of a dispense tip is formed through a length of a body from an input end to an output end. An inlet hole is formed at a distal end of the neck hole, the inlet hole having a first inner diameter. An outlet hole is formed at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first. A first inner taper transitions the inlet hole from the first inner diameter to the second inner diameter. An outer taper is formed having a width that decreases along a longitudinal axis of the length of the neck hole at a distalmost end. The width of the outer taper is reduced at the distalmost end at the output end of the body of material from a first outer width to a second outer width less than the first outer width.

A headlight and display integrated stem of an electric bicycle includes a display housing and a headlight housing. A display assembly is provided on the display housing. A headlight assembly is provided on the headlight housing. The display housing and the headlight housing are flexibly connected to each other. The headlight assembly and the display assembly are integrated to share a controller and a power supply, simplifying wiring.

A method and a former for necking and thickening a tube end. The former includes a hydraulic cylinder, a pusher, a concave die, a filler block, a plurality of heating rods and a heating device. The hydraulic cylinder is connected to a disc provided with a guide sleeve. The pusher is provided on the hydraulic cylinder and passes through the guide sleeve. The concave die is provided at a side of the pusher and includes a mold cavity and a plurality of heating holes. The filler block is provided in the mold cavity. The heating rods are provided in the heating holes connected to the heating device. The filler block includes a tapered portion provided at one end of the filler block and a diameter-reduced portion. The tapered portion is threadedly connected to the diameter-reduced portion. An ejector pin is provided at one end of the diameter-reduced portion.

Provided is a die and a method for forming a flange at an axial end of a rigid metal tube. The die is configured to be engaged by a forming tool to deform the axial end of the rigid metal tube into the flange suitable for providing a leakproof link with an external sealing element. A flange recess in the die provides a shutoff-surface for defining a radially outermost perimeter of the flange formed in the flange recess, and a groove, disposed axially adjacent the flange recess, that is configured to provide for direction of overflow material of the rigid tube during flange formation. The groove aids in enabling an adequately sized planar sealing face of the flange while reducing or altogether preventing formation of flashing at the sealing face.

Provided is a die and a method for forming a flange at an axial end of a rigid metal tube. The die is configured to be engaged by a forming tool to deform the axial end of the rigid metal tube into the flange suitable for providing a leakproof link with an external sealing element. A flange recess in the die provides a shutoff-surface for defining a radially outermost perimeter of the flange formed in the flange recess, and a groove, disposed axially adjacent the flange recess, that is configured to provide for direction of overflow material of the rigid tube during flange formation. The groove aids in enabling an adequately sized planar sealing face of the flange while reducing or altogether preventing formation of flashing at the sealing face.

There is provided a method of manufacturing a variable wall thickness steel pipe with a hollow tubular raw pipe. The method of manufacturing a variable wall thickness steel pipe includes locking the raw pipe in a die by thrusting a plug into the raw pipe from an one end side, so as to expand an outer shape on the one end side in a state, where the raw pipe is disposed inside the die and movement of the raw pipe in a longitudinal direction is restricted; and performing ironing in which an inner shape of the raw pipe is expanded while the outer shape is maintained so that a thin portion is formed by further thrusting the plug toward the other end side of the raw pipe while the locked state of the raw pipe is maintained, whereas the restriction on the raw pipe is relaxed.

A method of manufacturing a cylindrical ring member includes a step of forming a metal intermediate material having a cylindrical portion and a chamfering step by cold forging in which a normal chamfer portion is formed on an axial end peripheral edge of the cylindrical portion by pressing a radial end portion of an axial end surface of the cylindrical portion against an annular chamfering surface provided in a mold configuring a mold device. A chamfering step is performed by cold forging in a state where a preliminary chamfer portion, of which a width dimension in a radial direction is larger than a width dimension of the normal chamfer portion in a radial direction, is formed on the axial end peripheral edge of the cylindrical portion.