| 摘要 |
According to the present invention, the auto multi-hole punching machine for a C-section shape steel simultaneously punches a plurality of holes in the C-section shape steel and simultaneously punches a pair of C-section shape steel to increase work efficiency and productivity; provides a structure with a simple machine composition and accurate and stable punching of holes; and promotes an increase in formability. According to the present invention, the auto multi-hole punching machine for C-section shape steel comprises: a base frame; an actuator fixated on one end of the base frame; a moving rod located on a top of a base frame and connected to an actuator to be able to move forwards and backwards; a cam block body formed on a side surface of the moving rod to move as one body with the moving rod, whose external surface is inclined; a punch block body distanced in a side direction from an external surface of the cam block body and fixated on the base frame to be able to move in the side direction whose internal side surface is made of a reverse inclined surface matched with the inclined surface of the cam block body, and on whose external surface a punching pin is formed in a vertical direction to the direction of moving forwards and backwards of the moving rod; and a die fixated on the base frame made of a block body in the form of a square cross-section having a set length, into whose outer circumferential surface the C-section shape steel is inserted. The present invention induces a reciprocating motion in a side direction of the punch block body by moving forwards and backwards of the moving rod and the cam block body in accordance to the driving of the actuator, and allows the C-section shape steel mounted on the die be punched by the punching pin of the punch block body making a reciprocating motion. |
