SPINNING FORMING METHOD AND SPINNING FORMING APPARATUS

摘要

A spinning forming method includes a first forming step and a second forming step, in each of which a plate fixed to a main shaft is formed while being rotated. In the first forming step, a processing tool is brought into contact with a first main surface of the plate to form a first level-changing portion extending from the first main surface toward a second main surface. In the second forming step, the processing tool is brought into contact with the second main surface at an outer peripheral side of the first level-changing portion to form a second level-changing portion extending in an opposite direction to the first level-changing portion.

主权项

1. A spinning forming method comprising:
a first forming step of forming a first level-changing portion by, while rotating a plate fixed to a main shaft, locally heating the plate and causing a processing tool to contact a first main surface of the plate, the first level-changing portion extending from the first main surface toward a second main surface opposite to the first main surface; and a second forming step of forming a second level-changing portion by, while rotating the plate fixed to the main shaft, locally heating the plate and causing the processing tool to contact the second main surface of the plate at an outer peripheral side of the first level-changing portion, the second level-changing portion extending in an opposite direction to the first level-changing portion.