Patent ID: 8760012

Claim:
A three-dimensional X-Z sliding system: comprising a stationary flat bed having a front surface and a rear surface lying in parallel with each other and lying in a Z-direction, an X-linear motor energized in an X-direction, a Z-linear motor energized in a Z-direction perpendicular to the X-direction, and a movable table allowed moving in the X-direction and the Z-direction by the energization of the X-linear motor and the Z-linear motor, respectively; wherein the bed has an angled configuration composed of a first flat zone extending in the X-direction, a second flat zone extending in the Z-direction and a third flat zone where the first zone merges with the second flat zone, the bed being provided thereon with an X-table of rectangular configuration for traveling in the X-direction over the first flat zone and a Z-table of rectangular configuration for traveling in the Z-direction over the second and third flat zones; wherein the X-table has a rectangular configuration having two opposite longer sides extending in the X-direction to an extent enough to lie over the first zone of the front surface on the bed, and the Z-table also has a rectangular configuration having two opposite longer sides extending in the Z-direction so as to cover substantially both the second zone and the third zone of the front surface on the flat bed, and wherein the X-table and the Z-table are installed on the bed to travel respectively without running into each other while ensuring the traveling range desired for each table; and wherein the movable table is a plate member small in size in comparison with the bed, the movable table lying to overlap with a front surface of the X-table and a front surface of the Z-table and having connections at a rear surface thereof with linear motion guide units one of which is installed on the X-table to force the movable table in the X-direction and another is installed on the Z-table to force the movable table in the Z-direction, whereby the movable table is controlled to move with respect to the bed in the X-direction and the Z-direction to a targeted position.