Cutting device for cutting residual runner of lenses

A cutting device, comprising:

• a base;
• a bearing seat positioned on the base, and comprising a first seat and a second seat connected to the first seat, the first seat comprising a top surface and a connecting surface, the first seat having a height greater than a height of the second seat, the connecting surface connecting to the second seat, the first seat defining a guiding hole on the top surface and a cutting hole on the connecting surface, the cutting hole communicating with the guiding hole;
• a positioning seat positioned on the second seat, and configured for receiving a lens;
• a supporting seat positioned on the base, and defining a first shaft hole, the first shaft hole adjacent to an end of the supporting seat and distant from the base;
• a shaft comprising a first axle and a second axle nonlinear with the first axle, the first axle received in the first shaft hole;
• and
• a guiding element rotatably connected to the second axle and received in the guiding hole, the shaft driving the guiding element to move up and down in the guiding hole.