A spinning forming device according to one aspect, a receiving jig supporting a central portion of a plate to be formed is attached to a rotating shaft, and a transform target portion of the plate is pressed by a processing tool and locally heated by a heater that performs induction heating. The heater includes an electric conducting pipe in which a cooling liquid flows. The electric conducting pipe includes: a coil portion extending in a circumferential direction of the rotating shaft and having a doubled circular-arc shape facing the plate; and a pair of lead portions extending from the coil portion outward in a radial direction of the rotating shaft. Each of the pair of lead portions is retreated father away from the plate than the coil portion at its end portion adjacent to the coil portion.

A method is provided for producing an angular bearing cage from a sleeve-like blank. In order to significantly reduce the manufacturing costs compared to known solutions even for small series, the method comprises the following steps of: Step A: providing a sleeve-like blank extending along an axis. Step B: rolling a wall section to be formed of the blank while changing the angle of the wall section to be formed relative to the axis of the blank. Step C: introducing rolling element pockets into the rolled wall section. A corresponding device and a correspondingly produced rolling bearing cage or angular bearing cage are also provided.

A method is provided for producing an angular bearing cage from a sleeve-like blank. In order to significantly reduce the manufacturing costs compared to known solutions even for small series, the method comprises the following steps of: Step A: providing a sleeve-like blank extending along an axis. Step B: rolling a wall section to be formed of the blank while changing the angle of the wall section to be formed relative to the axis of the blank. Step C: introducing rolling element pockets into the rolled wall section. A corresponding device and a correspondingly produced rolling bearing cage or angular bearing cage are also provided.

A method of forming a compound curvature metal skin includes providing a blank defining at least a sector of a truncated cone, providing an arcuate or annular punch substantially corresponding in shape to an inner surface of the compound curvature metal skin, gripping a leading edge of a sheet metal blank between mating faces of a first blank holder on a first side of the punch, gripping a trailing edge of the blank between mating faces of a second blank holder on a second side of the punch opposite to the first side, displacing the blank holders with respect to the punch to draw the blank over the punch while permitting the blank to flow between mating surfaces of at least one of the blank holders, including displacing each of the blank holders with respect to the punch by different amounts and at different rates.

A method of forming a compound curvature metal skin includes providing a blank defining at least a sector of a truncated cone, providing an arcuate or annular punch substantially corresponding in shape to an inner surface of the compound curvature metal skin, gripping a leading edge of a sheet metal blank between mating faces of a first blank holder on a first side of the punch, gripping a trailing edge of the blank between mating faces of a second blank holder on a second side of the punch opposite to the first side, displacing the blank holders with respect to the punch to draw the blank over the punch while permitting the blank to flow between mating surfaces of at least one of the blank holders, including displacing each of the blank holders with respect to the punch by different amounts and at different rates.

A method of manufacturing a hollow structural frame rail includes rotating a tube relative to a tool to reduce an outside diameter of the tube at predetermined positions along the length of the tube. An elastomeric insert is positioned within the tube. The tube is bent at a location containing the insert. The bent tube is hydroformed to define a finished shape of the frame rail.

A method of manufacturing a hollow structural frame rail includes rotating a tube relative to a tool to reduce an outside diameter of the tube at predetermined positions along the length of the tube. An elastomeric insert is positioned within the tube. The tube is bent at a location containing the insert. The bent tube is hydroformed to define a finished shape of the frame rail.

The present invention relates to an online roundness correcting device for a semifinished wheel, which consists of a jacking and rotating system, a left correcting system, a right correcting system and a central locating system. According to the online roundness correcting device provided by the present invention, in service, an online roundness correcting function for the semifinished wheel can be achieved, and the corrected wheel has good roundness and cylindricity, so that not only can the labor intensity for workers be lowered, but also the online roundness correcting device has the characteristics of high degree of automation, advanced process, simple structure and safe and stable performance.

The present invention relates to an online roundness correcting device for a semifinished wheel, which consists of a jacking and rotating system, a left correcting system, a right correcting system and a central locating system. According to the online roundness correcting device provided by the present invention, in service, an online roundness correcting function for the semifinished wheel can be achieved, and the corrected wheel has good roundness and cylindricity, so that not only can the labor intensity for workers be lowered, but also the online roundness correcting device has the characteristics of high degree of automation, advanced process, simple structure and safe and stable performance.

A spinning forming device includes: a rotating shaft that rotates a plate to be formed; a processing tool that presses a front surface of the plate while being moved outward in a radial direction of the rotating shaft; and a heater that is moved so as to be located on the same circumference as the processing tool and locally heats the plate by induction heating. The spinning forming device further includes a cooling device that cools the front surface of the plate.