| 摘要 |
<p>The non-circular tube is applicable to the packing industry and it has an enhanced appearance to the welding between the tubular body (1) and the head (3). The front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3-D curve which, accounting for the shape and size of the head (3), in each section of the head (3) ensures a constant height H of the front end (2) of the tubular body (1) relative to the base of the head (3) according to the following relation: (I) Where: L is variable length of the forming curve of the tubular body (1) in each of its sections; a is constant length; R is constant radius of the rounding (5); a is variable angle between the surface line and the axis of the head (3); amax is the greatest value of the variable angle a.</p> |
