The invention discloses a portable semi-automatic
flame cutting machine which comprises a body control box and angle-adjustable
cutting nozzles. A motor box is fixedly connected to the right side of the top of the body control box, a vertical moving rod penetrates through the right side of the interior of the motor box, a rack is embedded into the left side of the motor box in a connection mode, and a
servo motor is fixedly connected to the middle of an inner cavity of the motor box. The invention relates to the technical field of
flame cutting machines. According to the portable semi-automatic
flame cutting
machine, the
servo motor and a gear are utilized to cooperate with the rack, and therefore ascent and descent of the vertical moving rod can be accurately controlled, and then the angle-adjustable cutting nozzles can
cut wing plates in the mode of being capable of ascending and descending; the angle-adjustable cutting nozzles are arranged on the two sides, and therefore the wing plates on the two sides can be
cut at one time even though H-shaped steel is not reversed, the reversing frequency is reduced, and the working efficiency is improved; and meanwhile,the situation that aweb plate part is completely
cut off can be guaranteed, a guide rail and other driving structures are omitted by the
machine, and therefore the overall weight of the machine can be greatly reduced, and the machine is convenient to carry and operate.