Patent ID: 8696191
Filing Date: 2014-04-15
Classification: B01F,B23H,Y10T

Abstract:
1. A working trough for maintaining a uniform temperature of a working fluid, wherein the working trough is applied to an electrical discharge machine that performs wire cutting using the working fluid, the electrical discharge machine having a lower extending arm, the working trough comprising: a base body having a receiving slot that is configured to accommodate the lower extending arm extending thereinto; at least two first openings respectively formed on first two opposed side surfaces of the base body and connected to an external fluid source, a distance between each of the at least two first openings and an upper edge of the base body corresponding to said each of the at least two first opening being smaller than a distance between said each of the at least two first opening and a bottom of the base body; and at least one second opening formed on the base body and under an end of the lower extending arm extending into the receiving slot; wherein the at least two first openings and the at least one second opening are so configured that the working fluid is flowable into the receiving slot from the external fluid source via the at least two first openings and out of the receiving slot via the at least one second opening, to thereby form a spiral swirl having a predetermined height in the receiving slot.