Safety bench saw based on flywheel limiting

The invention belongs to the technical field of bench saws, and particularly relates to a safety bench saw based on flywheel limiting. The bench saw comprises a bench saw shell, an annular saw blade,a mechanism cavity, a fixed plate, a first arc guide rail, a first driven wheel, an arc limiting plate, a flywheel, a transmission gear, a second driven wheel, a motor, a drive wheel and the like; when a user touches the high-speed-rotating annular saw blade due to sudden accidents, the motor is stopped, a coil is instantly powered on, under the electromagnetic induction effect, a ladder type block is instantly inserted into a corresponding ladder cut opening, the flywheel drives the arc limiting plate to do arc motion around the axis of the flywheel, clamping teeth on the arc limiting plateand the sawteeth on the annular saw blade carry out limiting finally, the annular saw blade is instantly stopped, and safety of the user is protected; in addition, the first driven wheel moves downwards, a first belt gradually