초록 ▼

A method and apparatus for processing a portion of a workpiece. At least one roller is supported on a rotatable member rotatable about a main axis to be radially moved to and from the main axis. The workpiece is supported to position a central axis of the portion to be processed at least one of offs

A method and apparatus for processing a portion of a workpiece. At least one roller is supported on a rotatable member rotatable about a main axis to be radially moved to and from the main axis. The workpiece is supported to position a central axis of the portion to be processed at least one of offset from and oblique to a forming target axis overlapping the main axis. Then, at least one of the workpiece and the roller is driven to be rotated relative to each other about the forming target axis, while the roller is moved radially toward the forming target axis, with the roller being in substantial contact with a surface of the portion to be processed. As a result, the portion to be processed is formed into a changed diameter portion having the forming target axis.

대표청구항 ▼

[ What is claimed is:] [11.]11. An apparatus for processing a portion of a workpiece by spinning to form a processed portion having a diameter different from an unprocessed portion of the workpiece and a central axis different from the unprocessed portion, comprising:a rotatable member rotatable abo

[ What is claimed is:] [11.]11. An apparatus for processing a portion of a workpiece by spinning to form a processed portion having a diameter different from an unprocessed portion of the workpiece and a central axis different from the unprocessed portion, comprising:a rotatable member rotatable about a main axis;at least one roller operatively mounted on the rotatable member to be radially movable to and from the main axis, and in contact with a surface of the portion to be processed;first driving means for moving at least one of the workpiece and the at least one roller relative to each other so that the central axis of the portion to be processed is at least one of offset from and oblique to a forming target axis that overlaps the main axis;second driving means for moving the at least one roller radially toward the forming target axis, with the at least one roller being in substantial contact with the surface of the portion to be processed and rotating the at least one roller about the main axis relative to the workpiece; andcontrol means for controlling the first and second driving means to form the portion to be processed into a changed diameter portion having the forming target axis.