Patent ID: 7927181
Filing Date: 2011-04-19
Classification: B24B,Y10S

Abstract:
1. A system for removing material from a microfeature workpiece, comprising: a support; a fixed-abrasive medium having a matrix, a surface configured to contact the workpiece, and abrasive particles attached to the matrix at the surface, wherein the fixed-abrasive medium is on the support; a head configured to rub a microfeature workpiece against the surface of the fixed-abrasive medium; an actuator operatively coupled to at least one of the support, the fixed-abrasive medium, and the head, the actuator being configured to generate vibration of an interface between the microfeature workpiece and the surface of the fixed-abrasive medium; and a controller coupled to the actuator, wherein the controller comprises a non-transitory computer-operable medium containing instructions that cause the actuator to generate vibration of the interface between the workpiece and the surface of the fixed-abrasive medium to maintain a frictional force between the workpiece and the surface in a desired range.