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US 9,850,589 B2Granted
System and methods for electrochemical grinding with a screen
AssigneeUnited Technologies Corporation
InventorsYing She, Raja Kountanya, Changsheng Guo, Daniel V. Viens
Life of this patent
Estimating the term…
Abstract
A system and methods are provided for electrochemical grinding a workpiece. In one embodiment, a method includes controlling potentials to grinding tool and the workpiece, controlling applying electrolyte, and controlling grinding of the workpiece by the grinding tool. The method may also include determining screen replacement when there is sufficient metal plated.
Claims18
An electrochemical grinding tool comprising:
- a voltage source including an anode and a cathode, the anode being electrically coupled to a workpiece;
- a grinding wheel having a grinding surface, wherein the grinding wheel is electrically coupled to the cathode of the voltage source, and wherein the grinding wheel includes abrasive material on the grinding surface;
- and
- a screen coupled to the grinding wheel, wherein the screen is configured to be electrically coupled to the cathode of the voltage source, wherein the screen is configured to recover material by electroplating removed by the grinding wheel during electrochemical grinding, wherein the screen encircles the grinding wheel and partially encloses the abrasive material on the grinding surface, and wherein a portion of the abrasive material extends radially outward beyond the screen to allow the portion of the abrasive material to engage with the workpiece.
1 more element
An electrochemical grinding system comprising:
- a grinding tool including
- a voltage source including an anode and a cathode, the anode being electrically coupled to a workpiece;
- a grinding wheel having a grinding surface, wherein the grinding wheel is electrically coupled to the cathode of the voltage source, and wherein the grinding wheel includes abrasive material on the grinding surface;
- and
- a screen coupled to the grinding wheel, wherein the screen is configured to be electrically coupled to the cathode of the voltage source, wherein the screen is configured to recover material by electroplating removed by the grinding wheel during electrochemical grinding, wherein the screen encircles the grinding wheel and partially encloses the abrasive material on the grinding surface, and wherein a portion of the abrasive material extends radially outward beyond the screen to allow the portion of the abrasive material to engage with the workpiece;
- and
- a controller configured to control the grinding tool for electrochemical grinding of the workpiece.
4 more elements
A method for electrochemical grinding, the method comprising:
- controlling a potential of a voltage source applied to a grinding tool, wherein the grinding tool includes a screen coupled to a grinding wheel having a grinding surface and abrasive material on the grinding surface, wherein the voltage source includes an anode and a cathode, and wherein the screen is electrically coupled to the cathode of the voltage source;
- electrically coupling the anode to a workpiece;
- electrically coupling the grinding wheel to the cathode of the voltage source;
- encircling the grinding wheel with the screen, wherein the screen partially encloses the abrasive material on the grinding surface and wherein a portion of the abrasive material extends radially outward beyond the screen to allow the portion of the abrasive material to engage with the workpiece;
- controlling a potential of the voltage source applied to the workpiece;
- and
- controlling electrochemical grinding of the workpiece by the grinding tool, wherein the screen is configured to recover material by electroplating removed by the grinding wheel during electrochemical grinding.
4 more elements
Dependencies are inferred from the claim text.