| 摘要 |
A method for dimple free guillotine cutting of multiple wall tube which involves first cutting a transverse notch substantially completely through the outermost tube wall and secondly cutting a notch through the path of the first notch but of greater depth to extend partially through the innermost tube wall. The cutoff function is then finalized by means of a guillotine blade which enters through the coextensive notches. Both pull-across and thrust blades for carrying out the method are disclosed.
|
