Back to results
US 2007/0175014 A1Published application
Method and apparatus for making metal ball bats
OwnerThu Van Nguyeninventor
Life of this patent
Estimating the term…
Abstract
A process for manufacturing a hollow metal ball bat includes forming a shell into a tubular shape using a pilger mill. The wall thickness of the tube shell is reduced by drawing the tube shell with the draw bench. A handle section and a taper section are created using the pilger mill. The handle is drawn through a draw bench, and the handle and taper sections are swaged.
Claims24
A process for manufacturing a hollow metal ball bat, comprising the steps of:
- forming a shell into a tubular shape using a pilger mill;
- reducing a wall thickness of the tube shell by drawing the tube shell with a draw bench;
- creating a handle section and a taper section using the pilger mill;
- drawing the handle using the draw bench;
- and
- swaging the handle and taper sections of the tube shell.
3 more elements
A process for manufacturing a hollow metal ball bat, comprising the steps of:
- forming a shell into a tubular shape having a generally uniform outer diameter and wall thickness using a pilger mill;
- drawing the tube shell over a mandrel of a draw bench to reduce the wall thickness of the tube shell;
- creating a handle section and a taper section using the pilger mill, including the steps of rotating the tube shell along a longitudinal axis thereof as a full-ring die set of the pilger mill is actuated along a length of the tube shell, wherein the full-ring die set is actuated along the length of the tube shell in such a manner so as to cause material flow of the tube shell in the same direction of work load during actuation strokes of the die set;
- drawing the handle using the draw bench;
- and
- swaging the handle and taper sections of the tube shell.
3 more elements
Dependencies are inferred from the claim text.