| 摘要 |
A carriage and rail assembly for a high-resolution mechanical positioner suitable for application to apparatus such as optical benches, inspection fixtures, machine tools and photography fixtures for effecting extreme position accuracy and resolution with low friction. The mechanical positioner may include an adjustable top plate or slide block mounted in parallel relation with respect to a baseplate or carriage block by means of mounting rods. Carriage rods or tracks extend perpendicular to the mounting rods and are fixed at opposite ends in flanges which project at right angles to opposite end portions of the baseplate or carriage block, while additional positioning rods or tracks are fixed at opposite ends in flanges which project at right angles to opposite end portions of the adjustable slide block. An actuating member by means of bushings or antifriction bearings is slidably mounted on the respective carriage and positioning rods in an arrangement in which the actuating member is mechanically coupled to the slide block through the positioning rods which are inclined in a predetermined angular relation to the carriage rods so that a horizontal positioning of the actuating member effects a vertical adjustment of the position of the slide block relative to the carriage block. The ratio of the horizontal adjustment of the actuating member relative to the vertical adjustment of the slide block is dependent upon the predetermined inclined angular relation of the positioning rods to the carriage rods in an arrangement such that the slide block may be adjusted with extreme position accuracy, resolution and with low friction.
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