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This utility model relates to a linear motor direct drive worktable with a safety protection device. The utility model includes a linear guide rail mounted on the machine tool bed; a worktable body with a slider slidably connected to the linear guide rail at its bottom; a linear motor including a primary and a secondary component, the primary component mounted at the bottom of the worktable body and the secondary component mounted on the machine tool bed; a linear encoder ruler mounted on the machine tool bed and extending along the sliding direction of the worktable body; an encoder ruler reading head mounted on the worktable body corresponding to the linear encoder ruler; a first and a second limit buffer device, respectively mounted on the machine tool bed and located on opposite sides of the worktable body's moving direction; and a braking device mounted on the slider. This utility model achieves high-speed, stable, and safe linear motion of the worktable.