The invention relates to a material falling device, which is used for receiving heat forming parts in the
metal heat processing process. The material falling device comprises a material collecting part and a support frame, wherein the material collecting part is formed by
metal wires arranged at intervals; the
metal wires are made of Ni-based alloys with the
Fe content (weight percentage) being 10to 16 percent; the heat forming part is a
cam shaft; the metal
heat processing is wedge transverse milling
processing. The material falling device also comprises a
slide plate part, wherein the slideplate part is connected with one end, near a wedge transverse milling
machine, of the support frame; the bottom of one end, near the wedge transverse milling
machine, of the support frame is hinged to a ground supporter arranged on the ground through a hinging frame; the bottom of one end, far away from the wedge transverse milling
machine, of the support frame is hinged to the end part of a
piston rod of a lifting cylinder through a hinging block; a cooling groove is put in the bottom of the support frame; cooling water is contained in the cooling groove.