Patent ID: 6798088
Filing Date: 2004-09-28
Classification: B23Q,H02K,Y10T

Abstract:
Structure for symmetrically disposed linear motor operated tool machine comprising:two sustaining walls parallelly erected at two side of the tool machine, and a slide rail being laid on top of each sustaining wall; a movable, box-shaped gantry having an essentially rectangular, parallelepiped outer configuration, and being transversely set on said slide rails which are laid on top of said sustaining walls and being capable of reciprocating in the longitudinal direction along said slide rails, a slot being formed in said movable gantry with slide rails laid on both sides of slots, and two linear motors being symmetrically disposed at both sides between said gantry and said sustaining walls; a sliding saddle set in said slot of said gantry and being transversely reciprocative on said gantry along slide rails laid on both sides of said slot, two linear motors being symmetrically disposed at both sides between said sliding saddle and said gantry; a tool spindle set in said sliding saddle, being movable up and down therein with slide rails provided on both sides thereof, two linear motors being provided at both sides between said tool spindle and said sliding saddle; a weight compensation device formed of at least one pressurized pneumatic cylinder being affixed to said sliding saddle; and a working pallet being fixed stationary between said two sustaining walls, said working pallet and said two sustaining walls collectively forming a U-shape, with said tool spindle having a portion that projects below said gantry and which is movable up and down in the U-shape.