| US 7,546,689 B2 | ||
| Joint for coordinate measurement device | ||
| Paul Ferrari, Carlsbad, Calif. (US); and Dongmei Hong, San Diego, Calif. (US) | ||
| Assigned to Hexagon Metrology AB, Nacka Strand (Sweden) | ||
| Filed on Jul. 09, 2007, as Appl. No. 11/775,081. | ||
| Prior Publication US 2009/0013547 A1, Jan. 15, 2009 | ||
| Int. Cl. G01B 5/008 (2006.01); G01B 5/012 (2006.01) | ||
| U.S. Cl. 33—503 [33/1 N; 33/1 PT] | 17 Claims |
| 1. A coordinate measuring machine comprising:
a first transfer member;
a second transfer member; and
an articulating joint assembly rotatably coupling the first transfer member to the second transfer member and defining an
axis of rotation, said articulating joint comprising:
a housing; and
a shaft rotatable relative to said housing; and
an encoder assembly comprising:
a read head coupled to one of said housing and said shaft; and
an encoder hub attached the other of said housing and said shaft, the encoder hub having a read surface;
wherein said encoder read head and the read surface of the encoder hub define a read direction of the encoder assembly, and
wherein the read direction is transverse to the axis of rotation of the articulating joint.
|