A rolling tool (5) has a basic body (6) for fastening the rolling tool (5) in a rolling machine (1) and a profiled part (7) for the shaping treatment of a workpiece (2) to be rolled. The basic body (6) and the profiled part (7) are of multi-piece design. The basic body (6) and the profiled part (7), in their interconnected position, are mounted movably relative to one another in a plane perpendicular to the rolling direction (23). The basic body (6) of the rolling tool (5) can also be part of the rolling machine (1).

A thread rolling tool for rolling or repairing a thread has a tool body, a profiled roller, and at least one counter roller. The profiled roller and the at least one counter roller are mounted on the tool body. Preferably, at least one of the profiled roller and the at least one counter roller is mounted so that it is axially displaceable. The profiled roller has a profiled roller profile that has a pitch.

A thread rolling tool for rolling or repairing a thread has a tool body, a profiled roller, and at least one counter roller. The profiled roller and the at least one counter roller are mounted on the tool body. Preferably, at least one of the profiled roller and the at least one counter roller is mounted so that it is axially displaceable. The profiled roller has a profiled roller profile that has a pitch.

The invention provides a self-drilling screw structure and a manufacturing method thereof, wherein the manufacturing method includes: providing screw body, forming drill tail screw rod section, forming concave neck portion, forming drill tail cutting edge and forming thread. The self-drilling screw structure including a screw head portion and a screw rod portion, the screw rod portion is sequentially provided with a threaded screw rod section, a drill tail screw rod section and a drill bit screw rod section, the drill tail screw rod section has a rod diameter of drill tail, a plurality of drill tail cutting edges and a plurality of drill tail chip discharge grooves, the drill bit screw rod section is provided with a concave neck portion, and the drill bit screw rod section is protruded to form a plurality of drill bit cutting edges and the plurality of drill bit chip discharge grooves.

The present invention relates generally to a container that may be sealed and reclosed with a threaded closure. More specifically, the present invention relates to methods of manufacturing a metallic container having an opening with inwardly facing threads. The threads are formed on the metallic container by pressing a neck portion of the metallic container against closure threads of a threaded closure which is inserted at least partially into the opening. The container threads may optionally be formed while the threaded closure is in tension. In this manner, after the container threads are formed, the closure threads can apply a force to the container threads such that the threaded closure is in tension. The container opening may be selectively sealed and reclosed with the threaded closure which releasably engages the container threads. Novel apparatus and methods of sealing metallic containers and forming threads on the metallic containers are also disclosed.

A rolling head for rolling pipe threads includes at least two rolling wheels and a rolling wheel seat for positioning the rolling wheels, in which the rolling wheel includes a rolling wheel body and a rolling wheel axle, the rolling wheel body includes a rolling wheel pipe thread forming portion, an axial movement space is present in a direction along the rolling wheel axle of the rolling wheel relative to the rolling wheel seat, an axial distance of the axial movement space is 0.5 thread pitch to 1 thread pitch of a corresponding thread of the rolling wheel pipe thread forming portion.

A hollow screw and related process of making is provided, wherein the hollow screw is formed from a generally circular corrosion resistant stainless steel disk cut from flat roll stock. The hollow screw includes a head and an elongated and hollow shaft having a wall thickness between about 0.2 to about 0.7 millimeters extending therefrom and defining a shank portion and a threaded portion having a plurality of threads thereon with a rotational drive mechanism configured to facilitate tightening via the threads. The process involves annealing to soften the stamped hollow screw, followed by thread rolling, and then age hardening the hollow screw. As such, the resultant hollow screw is relatively lightweight, about 50% the mass of a solid core screw made from the same material, with a sufficient thread strength to meet most aerospace applications and contributes to important aircraft fuel economy.

A hollow screw and related process of making is provided, wherein the hollow screw is formed from a generally circular corrosion resistant stainless steel disk cut from flat roll stock. The hollow screw includes a head and an elongated and hollow shaft having a wall thickness between about 0.2 to about 0.7 millimeters extending therefrom and defining a shank portion and a threaded portion having a plurality of threads thereon with a rotational drive mechanism configured to facilitate tightening via the threads. The process involves annealing to soften the stamped hollow screw, followed by thread rolling, and then age hardening the hollow screw. As such, the resultant hollow screw is relatively lightweight, about 50% the mass of a solid core screw made from the same material, with a sufficient thread strength to meet most aerospace applications and contributes to important aircraft fuel economy.

This invention provides a method for rolling an external pipe thread, a rolling head and device thereof. A rolling wheel carries out a thread rolling, wherein the thread rolling starts from a thread tail of the external pipe thread and moves towards a thread head of the external pipe thread, thereby completing the thread rolling. The rolling head of the invention comprises at least one rolling wheel arranged along a circumference, a corresponding rolling wheel axle and a corresponding rolling wheel seat; the rolling wheel is rotatably fixed to the rolling wheel seat via the rolling wheel axle; and the rolling wheel is provided with a pipe thread forming part having a thread length less than an effective thread length of the external pipe thread to be rolled. The rolling head of the invention also comprises a radial regulating device that can realize dynamic rolling and real-time whole-process regulation of radial position of the rolling wheel for the purpose of forming the taper as required by rolling process. The invention also provides rolling device including aforesaid rolling head. Solutions as provided by this invention are expected to guard against deformation to the pipe end during rolling, significantly save materials for hollowed cylindrical blank, and improve the rate of finished products.

This invention provides a method for rolling an external pipe thread, a rolling head and device thereof. A rolling wheel carries out a thread rolling, wherein the thread rolling starts from a thread tail of the external pipe thread and moves towards a thread head of the external pipe thread, thereby completing the thread rolling. The rolling head of the invention comprises at least one rolling wheel arranged along a circumference, a corresponding rolling wheel axle and a corresponding rolling wheel seat; the rolling wheel is rotatably fixed to the rolling wheel seat via the rolling wheel axle; and the rolling wheel is provided with a pipe thread forming part having a thread length less than an effective thread length of the external pipe thread to be rolled. The rolling head of the invention also comprises a radial regulating device that can realize dynamic rolling and real-time whole-process regulation of radial position of the rolling wheel for the purpose of forming the taper as required by rolling process. The invention also provides rolling device including aforesaid rolling head. Solutions as provided by this invention are expected to guard against deformation to the pipe end during rolling, significantly save materials for hollowed cylindrical blank, and improve the rate of finished products.