Patent ID: 7616084
Filing Date: 2009-11-10
Classification: B23B,H02K,Y10T

Abstract:
1. A device for positioning an article, the device comprising: a frame; an armature moveably positioned within the frame, the armature having an electromagnetic biasing surface and a working surface such that a drive force is applied to the working surface and a bias is applied to the biasing surface, wherein the armature further comprises a shaft coupled to a cutting tool at a distal end, the cutting tool being mounted to an armature element at a proximal end of the shaft; a permanent magnet that applies bias to the biasing surface; an electromagnetic actuator that applies a force to the working surface to actuate movement of the armature; an article mounted to the armature, the device operating to position the article; an armature position sensor for sensing position of the armature; a flexure that guides the article along an axis, wherein the axis corresponds to one degree-of-freedom; and a solenoid pair for actuating the armature, wherein the solenoids are shaped for receiving a winding, respectively, and wherein the windings are driven using a linear power amplifier.