SEALING DEVICE FOR STRAIGHT LINE MOTION MECHANISM

摘要

PURPOSE:To prevent failure in lubrication in a sealing device of straight line motion of machine tool or the like by providing a pair of second rail members between the top surface of a guide rail and the opposite surface of a slider along the axial direction separated by the central area of the axial direction of the top surface of the guide rail, and providing a lubricant storage chamber between rolling grooves. CONSTITUTION:A lubricant supply passage 20 communicated with a space between the lower surface of a slider 7 and the top surface 4 of a guide rail 1 is provided to be communicated with an end rail (first seal member) 16 of each end plate 10 fitted to both axial end surfaces of the slider 7. A flat-shape plate 15 is provided between the lower surface 19 of the slider 7 and the top surface 4 of the guide rail 1, and bend parts 23 are formed in both side edges thereof to bond an upper inner seal 24. The tips 25 of the bend parts 23 are made to contact to the upper surface 4 of the guide rail 1 to form a first storage chamber 90 of the lubricant between the upper inner seal 24 and a second rolling groove 9, the first rolling groove 3.