Plasma cutting device for numerically controlled cutting machine

The utility model provides a plasma cutting device for a numerically controlled cutting machine, which comprises a first clamp plate, a second clamp plate, a numerically controlled cutting nozzle and a plasma cutting nozzle, wherein the first clamp plate is a metal plate with two arc-shaped openings on one side, and the second clamp plate is a metal plate with two arc-shaped openings formed on one side and corresponding to the arc-shaped openings on the first clamp plate; the numerically controlled cutting nozzle and the plasma cutting nozzle are respectively arranged in two openings formed by the arc-shaped openings on the first clamp plate and the second clamp plate; and the first clamp plate and the second clamp plate are detachably connected with each other. The plasma cutting device adopting the technical scheme has the benefits that various cutting ways of the numerically controlled cutting machine are realized, which can ensure the production efficiency, improve the product quality and reduce the cost;