The invention relates to an external force adjusting type and automatic residue discharging type axial
powder actuated tool. The external force adjusting and automatic residue discharging type axial
powder actuated tool is characterized in that a pressure relief through hole is formed in a nail
pipe, an outer sleeve, a main sleeve and a force adjusting sleeve are involved, wherein a residue discharging channel is formed in the force adjusting sleeve, and silencing holes of the nail
pipe communicate with a residue discharging heat dissipation hole in the outer sleeve; and when a reset spring iscompressed, the main sleeve can seal the residue discharging heat dissipation hole. According to the
powder actuated tool, the nail
pipe can freely rotate under external operation, and the most suitable
explosive force can be obtained, meanwhile, when a reset action is carried out, functions of residue discharging and heat dissipation are realized as well, so that heat is timely dissipated, the residue debris can be discharged at any time, a residue discharging maintaining process is omitted, and residue discharging difficulty is reduced; more importantly, the temperature of parts can be effectively reduced, and serious potential safety hazards are avoided; and in addition, due to the arrangement of an anti-rotation sleeve, relative rotation between the nail pipe and the force adjusting sleeve can be effectively realized, marking is assisted, and namely the purpose of conveniently and accurately adjusting force can be achieved.