| 摘要 |
A method and an apparatus for a metal spinning operation capable of spinning a product having a non-circular cross section normal to an axis of rotation such as a polygonal/elliptic one. The actuators of a forming roller ( 5 ) are driven with feedback signals from a force sensor ( 8 ) fitted to the forming roller ( 5 ) to control the pushing force of the forming roller ( 5 ) so as to form a work ( 1 ) following the cross section shape of a mandrel ( 3 ), so that the product having the non-circular cross section normal to the axis of rotation can also be formed. The motion of the forming roller ( 5 ) in the forming operation is stored, the shape of the mandrel ( 3 ) near the point of the forming roller ( 5 ) contacting with the work ( 1 ) is estimated based on the motion of the forming roller ( 5 ) from a time point before one rotation of the mandrel ( 3 ), and according to the estimation, the rotational speed of a motor for rotating the mandrel ( 3 ) is controlled for the forming operation.
|
