According to the principle of no teeth saw cutting, using swinging mechanism, so that the rotation of the sheet wheel axis around the rail axis along a certain trajectory of reciprocating swing, thin grinding wheel to the rail cutting, thin grinding wheel rotary plane and rail cross-section contact length is small, thus reducing the wear of sheet grinding wheel, improve the utilization rate and
1. Main movement: the motor, drive V-belt drive to make the spindle (thin grinding wheel) slewing.
2. Feed movement: The use of cutting arm and swing arm relative swing, by the weight of the cutting machine to achieve the cutting movement of the thin grinding wheel, cutting arm spindle sheet grinding wheel in the swing arm (Card rail mechanism) center plane side, and cantilever longer, so saw blade can be cut to the bottom of the rail.