4results about "Grooves" patented technology

The present invention provides a rolling die that optimizes the flow of a rolled material during rolling, prevents the formation of an incomplete shape of a tooth tip of a product, and does not require a removal process of a protrusion after rolling. The rolling die is used when a helical tooth shape (21) is formed by rolling an outer peripheral surface of a rolled material (20), wherein the rolling die has a bite portion (1), a finishing portion (2), and a retreat portion (3) from a rolling direction start end side toward a rolling direction end end side, a machining tooth that comes into contact with the rolled material (20) is provided in each of the bite portion (1), the finishing portion (2), and the retreat portion (3), the machining tooth (4) of the bite portion (1) has a mountain-shaped tip portion (7) that protrudes toward a tip end at a tooth tip, the mountain-shaped tip portion (7) is configured to be offset from a tooth thickness center line (C r ) of the machining tooth (4) in a direction of a tooth thickness, and the wall amount of the rolling direction start end side becomes a wall amount that is larger than the wall amount of the rolling direction end end side.

A tube grooving device with multiple geared cams uses synchronizing gears, each meshing with two of the geared cams to synchronize the rotation of the cams of the tube element for forming a groove. The position of the groove relative to the end of the tube is controlled by a stop body incorporating a plate mounting ring that engages and disengages with a tube stop surface on one or more of the cams to restrict or allow cam rotation. The tube stop body is positioned within a cup receiving the tube element. This cup restricts flaring at the tube end and limits the tendency for the tube to become out of round during the grooving process. The device is mounted on a power chuck that rotates the tube element.

An apparatus (1) arranged for rolling a circumferential external groove (994) in a pipe (99) The apparatus (1) comprises a fixture (50) and a grooving tool (10). In a fixing- position the fixture (50) is configured to engage an internal wall (996) of the pipe (99) and fix the apparatus (1) to a pipe end portion (990) such that a pipe centre axis (X99) is coaxial with an apparatus centre axis (X1), and the grooving tool (10) is rotatable around the centre axis (X1). The grooving tool (10) comprises a hydraulic piston (12) and at least one wheel-holder (110), the hydraulic piston (12) is displaceable along the centre axis (X1), the hydraulic piston (12) is configured to displace the wheel-holder (110) in a radial direction relative to the centre axis (X1) between an idle position (1102) and a grooving position (1104), and the wheel-holder (110) comprises a grooving wheel (111).

An apparatus (1) for rolling a circumferential outer slot (994) in a pipe (99). The apparatus (1) comprises a clamp (50) and a grooving tool (10). In a fixed position, the clamp (50) is configured to engage an inner wall (996) of the pipe (99) and fix the device (1) to a pipe end portion (990) such that the pipe central axis (X99) is coaxial with the device central axis (X1), and the grooving tool (10) is rotatable about the central axis (X1), the grooving tool (10) comprising a hydraulic piston (12) and at least one wheeled holder (110), the hydraulic piston (12) is displaceable along the central axis (X1), the hydraulic piston (12) is configured to displace the wheeled holder (110) in a radial direction relative to the central axis (X1) between an idle position (1102) and a slotted position (1104), and the wheeled holder (110) comprises a slotted wheel (111).