Stacked lamination endplate
A stacked lamination endplate for a rotor that includes a number of adjacent laminations, stacked one on top of another, wherein each lamination has an identical shape, the shape having a central region, symmetric about a center axis, and a number of spokes, each spoke emanating radially outward from the central region, where each spoke includes a through-hole at its distal end, and wherein the laminations are stacked one on top of another and aligned, enabling, for each spoke, a bolt to be inserted through a corresponding through-hole of each lamination.
1. A stacked lamination endplate for a rotor, comprising:
a plurality of adjacent laminations, stacked one on top of another, wherein each lamination has an identical shape, the shape comprising:
a central region, symmetric about a center axis; and
a plurality of spokes, each spoke emanating radially outward from the central region, wherein each spoke includes a through-hole at its distal end;
wherein the laminations are aligned, enabling, for each spoke, a bolt or tie-rod to be inserted through a corresponding through-hole of each lamination, and wherein at least one of the laminations includes a tag, wherein the tag is used during the manufacturing process to align each of plurality of adjacent laminations.
2. The endplate of claim 1 wherein a threaded nut is inserted into the through-hole of each spoke.
3. The endplate of claim 1 wherein there are 8 spokes.
4. The flywheel rotor of claim 1 wherein there is no through-hole through the axial center of the central region.
5. The endplate of claim 1 wherein the laminations are made of a material selected from the group consisting of steel, plastic, carbon fiber, composite, and cement.
6. The endplate of claim 1 wherein each lamination is formed from a single piece of material.
7. The endplate of claim 1 wherein the spokes of a lamination are formed by removing material from regions between adjacent spokes outside the central region.
8. The endplate of claim 1 wherein the identical shape further comprises:
one or more intermediate through-holes between each pair of adjacent spokes.
9. The endplate of claim 8 wherein the central region is roughly circular in shape and each intermediate through-hole lies exterior to a circumference of the central region.
10. The endplate of claim 1 wherein the identical shape further comprises:
a bolt-circle in the central region that may be used to join the endplate to a stubshaft.
11. The endplate of claim 1 wherein during the manufacturing process an adhesive is applied to each lamination.