Patent ID: 9724803
Date: 2017-08-08
CPC Classifications: B24C,C25F

Claim:
1. A nozzle for charging and ejecting electrolyte in stress-free polishing process, comprising: an insulated foundation, defining a through-hole passing therethrough; a conductive body as negative electrode connecting with a power source for charging the electrolyte, the conductive body having a fixing portion located on the insulated foundation, the fixing portion protruding to form a receiving portion inserted into the through-hole of the insulated foundation, the receiving portion defining a receiving hole passing therethrough and the fixing portion; and an insulated nozzle head having a cover stably assembled with the insulated foundation above the conductive body, and a tube extending through the cover and defining a main fluid path through where the charged electrolyte is ejected out for polishing, the tube inserted in the receiving hole and stretching out of the receiving hole of the conductive body, an auxiliary fluid path formed between an inner circumferential surface of the receiving portion and an outer circumferential surface of the tube; wherein the electrolyte is separated into two streams by the tube, one stream of the electrolyte is charged by the conductive body, transported through the main fluid path of the insulated nozzle head and ejected out for polishing, the other stream of the electrolyte is charged by the conductive body, transported through the auxiliary fluid path and recycled without being ejected; wherein the charged electrolyte in the main fluid path and in the auxiliary fluid path are the same.