A method for machining the wheel running surfaces of wheels for rail vehicles using a wheel machining machine is described herein. The method includes performing a rolling process on the wheels with a rolling tool that applies a rolling force to the wheels, and adjusting the rolling force by controlling the torques of drive motors of feed axles of the rolling tool.

A method of manufacturing a preliminary formed body includes an ironing step and a thickening step. In the ironing step, a predetermined range of a plate is formed into a tapered shape in such a manner that while rotating the plate, a transform target portion of the plate is locally heated by induction heating, and a processing tool is pressed against the transform target portion. In the thickening step, a peripheral portion that is a distal end of the tapered shape of the plate is expanded inward in such a manner that while rotating the plate, the peripheral portion is locally heated, and a forming roller is pressed against the peripheral portion to push the peripheral portion in a direction orthogonal to a thickness direction of the peripheral portion.

A method of manufacturing a preliminary formed body includes an ironing step and a thickening step. In the ironing step, a predetermined range of a plate is formed into a tapered shape in such a manner that while rotating the plate, a transform target portion of the plate is locally heated by induction heating, and a processing tool is pressed against the transform target portion. In the thickening step, a peripheral portion that is a distal end of the tapered shape of the plate is expanded inward in such a manner that while rotating the plate, the peripheral portion is locally heated, and a forming roller is pressed against the peripheral portion to push the peripheral portion in a direction orthogonal to a thickness direction of the peripheral portion.

A vehicle wheel disc includes a flat plate-shaped hub-mounted part, a cylindrical rim-mounted part, and a hat-shaped part. The hat-shaped part includes a hat top portion, a hat inner peripheral portion, and a hat outer peripheral portion. At a border between the hub-mounted part and the hat inner peripheral portion, a first connecting portion is provided, and at a border between the hat top portion and the hat outer peripheral portion, a second connecting portion is provided. The plate thickness of the hat outer peripheral portion is smaller than the plate thickness of an intermediate portion that is a portion from a border between the first connecting portion and the hat inner peripheral portion to a border between the hat top portion and the second connecting portion in the disc radial direction.

A vehicle wheel disc includes a flat plate-shaped hub-mounted part, a cylindrical rim-mounted part, and a hat-shaped part. The hat-shaped part includes a hat top portion, a hat inner peripheral portion, and a hat outer peripheral portion. At a border between the hub-mounted part and the hat inner peripheral portion, a first connecting portion is provided, and at a border between the hat top portion and the hat outer peripheral portion, a second connecting portion is provided. The plate thickness of the hat outer peripheral portion is smaller than the plate thickness of an intermediate portion that is a portion from a border between the first connecting portion and the hat inner peripheral portion to a border between the hat top portion and the second connecting portion in the disc radial direction.

A method for machining the wheel running surfaces of wheels for rail vehicles using a wheel machining machine is described herein. The method includes performing a rolling process on the wheels with a rolling tool that applies a rolling force to the wheels, and adjusting the rolling force by controlling the torques of drive motors of feed axles of the rolling tool.

Provided is a method for manufacturing an aluminium alloy automobile hub, the method comprising the following steps: putting a workpiece in the shape of a shallow hat on a first spinning base, wherein an opening of the workpiece faces upward, and a first upper pressure head extends into the workpiece from above and then fixes the workpiece; and pressing out a rim for spokes on an outer side of a lower portion of the workpiece by means of spinning rollers. In the method, series and improved aluminium alloy sheets are taken as raw materials and are integrally formed by multi-pass powerful spinning machining, such that same are deformed step by step in the whole process according to the properties of aluminium alloy, thereby forming a blank of the hub, and then the hub is formed by finishing.

A plastic forming machine including a fixed pole; a movable pole; a shaft for fixing a raw material; an electric motor for rotating the shaft; a linear movement system enabling the movement of the movable pole; a first pressing rod positioned on lower surface of the movable pole, includes a first arm extending parallel to the movable pole, a second arm extending vertical to the first arm, and a third arm, having a first end and second end, connected to the first arm from its second end; a second pressing rod having a first and a second end, is connected slidingly to the first arm from its first end; at least one actuator connected to the first arm; a contact end connected to the second ends of the second pressing rod and the third arm; at least one control system for controlling the linear movement mechanism and the actuator.

The present application relates to a wheel rolling device, which is composed of a lower lifting rotating system, first rolling systems, a synchronous clamping drive system, a second rolling system and a third rolling system. The present application may not only strengthen the center hole, the inner and outer rims, the upper and lower rims, the flange root and the like portion of the wheel by rolling, but also may strengthen the bolt holes and valve holes of the wheel by extrusion; at the same time, the present application has the characteristics of high automation, powerful function, advanced technology, strong versatility and safe and stable performance.

The present application relates to a wheel rolling device, which is composed of a lower lifting rotating system, first rolling systems, a synchronous clamping drive system, a second rolling system and a third rolling system. The present application may not only strengthen the center hole, the inner and outer rims, the upper and lower rims, the flange root and the like portion of the wheel by rolling, but also may strengthen the bolt holes and valve holes of the wheel by extrusion; at the same time, the present application has the characteristics of high automation, powerful function, advanced technology, strong versatility and safe and stable performance.