| US 7,600,312 B2 | ||
| Die assembly for manufacturing lamina stacks that include formed features | ||
| Barry A. Lee, Fort Wayne, Ind. (US); and Thomas R. Neuenschwander, Fort Wayne, Ind. (US) | ||
| Assigned to L.H. Carbide Corporation, Fort Wayne, Ind. (US) | ||
| Filed on Jul. 12, 2005, as Appl. No. 11/179,420. | ||
| Prior Publication US 2007/0011866 A1, Jan. 18, 2007 | ||
| Int. Cl. B23P 19/00 (2006.01); B26D 3/00 (2006.01); H02K 1/00 (2006.01) | ||
| U.S. Cl. 29—738 [29/609; 29/715; 29/732; 29/733; 29/736; 83/55; 83/255; 83/405; 310/216] | 14 Claims |
| 1. A die assembly for manufacturing lamina stacks from a strip of substantially planar material, comprising:
at least one die station including a lamina interlock feature punch configured to punch a lamina interlock feature in the
strip;
at least one forming station including at least one forming tool configured to form a non-interlocking lamina portion in the
strip which is disposed outwardly of the plane of the strip;
a blanking station including a blanking punch configured to blank individual laminas from the strip; and
a choke assembly including a choke cavity configured to receive individual laminas blanked from the strip, wherein said blanking
station includes at least one staking punch, each staking punch engageable with a respective lamina interlock feature in the
strip to interlock a blanked lamina with a previously blanked lamina in said choke assembly substantially concurrently with
blanking the blanked lamina from the strip.
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