Patent ID: 8133098

Claim:
A tool spindle device comprising: a support table; a spindle head slidably guided along at least one guide member on the support table and rotatably supporting a tool spindle with a machining tool through antifriction bearings; a spindle head feed mechanism for feeding the spindle head along the at least one guide member on the support table; a lubrication mechanism provided in the spindle head for lubricating the antifriction bearings with oil air or oil mist; a first space section formed between the support table and the spindle head to house the spindle head feed mechanism and the at least one guide member therein; and a first release passage communicating the lubrication mechanism for lubricating the antifriction bearings with the first space section, for releasing the oil air or the oil mist after lubricating the antifriction bearings into the first space section.