Industrial Technology Research Institute

Yang-Xin Lin

Jui-Kuan Lin

Tzuo-Liang Luo

En-Sheng Chang

Chin-Mou Hsu

Hsiang-Kuo Lee

Hsin-Chuan Su

The invention provides a working trough and a method for maintaining a uniform temperature of a working fluid. The working trough is applied to an electrical discharge machine that performs wire cutting using the working fluid. The method for maintaining a uniform temperature of the working fluid is applied to the working trough and characterized by forming opening structures in a receiving slot of the working trough such that a spiral swirl having a predetermined height is allowed to be formed in the working fluid, thereby maintaining a uniform temperature of the working fluid in the receiving slot when a wire cutting process is performed in the working fluid by the electrical discharge machine. The disturbance of the spiral swirl also facilitates the discharge of scraps. The present invention further has an advantage of low cost.

Working trough and method for maintaining uniform temperature of working fluid

A feed control method for wire cutting electrochemical discharge machining is disclosed. The method determines whether a contact event has occurred using a wire electrode, based on variations in wire tension when being cut. A wire is cut with an ideal feed speed when the wire electrode is not in contact with a workpiece.

Feed control method for wire cutting electrochemical discharge machining and apparatus thereof

A wire electrical discharge machine (WEDM) is disclosed, which comprises: a movable crane; a measure unit, mounted on the crane for measuring the deformation of the same; and a control unit, electrically connected to the measure unit and used for controlling the crane to move; wherein a lookup table describing the relation between the crane's deformation and position error is stored in the control unit, basing on which the control unit is able to perform a feedback displacement control on the crane with respect to its deformation.

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Hsinchu Hsien, Taiwan

Yang-Xin Lin