Patent ID: 8276492

Claim:
An angle adjustment structure installed in a hydraulic cut-off press between a worktable and a machine base for adjusting the angular position of the worktable relative to the machine base, the angle adjustment structure comprising: a) two arched rails, one of the two arched rails is fixed to a bottom side of each of two opposing upright peripheral walls of the worktable; b) two arched sliding grooves, one of the two arched sliding grooves is formed in each of two opposing upright peripheral walls of the machine base, one of the two arched rails is slidably located in each of the two arched sliding grooves; c) a worm rotatably mounted in the machine base; and d) at least one worm gear fixedly connected to a bottom of the worktable between the two opposing upright peripheral walls and engaging the worm, wherein the worm controlling a movement of the at least one worm gear and selectively adjusting the worktable relative to the machine base.