Abstract: A sealing device and a wire electrical discharge machine that may reduce sludge deposition, include a seal base, a seal plate, a bellows member, a flow passage, and a guide rail member. The guide rail member is open on the inward direction side thereof to cause sludge generated by machining of an object to be machined to flow into a machining tank along with a machining liquid supplied between the bellows member and the seal plate.

Abstract: A wire electrical discharge machine includes: a wire electrode cumulative moving time calculator for calculating a value correlated to a wire electrode cumulative moving time as a cumulative value of time for which a wire electrode has moved in each of multiple wire electrode moving regions which are defined by dividing a movable range of the wire electrode moving relative to a worktable; and a display control unit for displaying on a display unit the information on values correlated to the wire electrode cumulative moving time for respective wire electrode moving regions.

Abstract: A wire electrical discharge machine includes: a wire electrode cumulative moving time calculator for calculating a value correlated to a wire electrode cumulative moving time as a cumulative value of time for which a wire electrode has moved in each of multiple wire electrode moving regions which are defined by dividing a movable range of the wire electrode moving relative to a worktable; and a display control unit for displaying on a display unit the information on values correlated to the wire electrode cumulative moving time for respective wire electrode moving regions.