Patent ID: 8397600

Claim:
A multi-functional feed-screw dovetail stage in which a slide member having a female-threaded cylinder connected thereto is engaged with a fixed member having a male-threaded rod connected thereto, and, by operating a control knob to rotate the male-threaded rod so as to move the female-threaded cylinder, the slide member is made to slide to thereby perform positional adjustment of a measuring equipment mounted on the stage, wherein the male-threaded rod includes, on each of its respective ends, a rod coupling portion for coupling to a knob coupling portion of the control knob; the multi-functional feed-screw dovetail stage further comprises a first support and a second support provided on respective sides of the fixed member, the supports defining the length of the fixed member along a travel direction of the female-threaded cylinder and rotatably supporting the male-threaded rod; the control knob detachably couples via the knob coupling portion to the male-threaded rod and serves to rotate the male-threaded rod; the rod coupling portion comprises threaded holes formed in the two ends of the male-threaded rod along an axial direction, and a bolt inserted inside the control knob along the axial direction for engaging with the threaded holes formed in the male-threaded rod; the slide member includes an insertion recess in which a protrusion coupled to the female-threaded cylinder can be removably inserted; and by removing the engaged bolt and removing the protrusion from the insertion recess, replacements can be made selectively from among a plurality of male-threaded rods having different amounts of displacement per rotation and corresponding female-threaded cylinders.