Electric double-blade slot cutting machine

An electric double-blade slot cutting machine, comprising:

• a first cutting unit, comprising a first blade and a first blade holder, wherein said first blade is mounted on said first blade holder, wherein said first blade has a first cutting part provided on an edge thereof, said first cutting unit is provided along a cutting route back and forward, and said first cutting unit has a first moving direction, said first cutting part extends along said cutting route;
• a second cutting unit, comprising a second blade and a second blade holder, wherein said second blade is mounted on said second blade holder, wherein said second blade has a second cutting part provided on an edge thereof, said second cutting unit is provided along said cutting route back and forward, and said second cutting unit has a second moving direction, wherein said first moving direction is opposite to said second moving direction in such a manner that resistance on said first blade counteracts resistance on said second blade while cutting, said cutting part extends along said cutting route;
• a restriction holder for restricting said first cutting unit and said second cutting unit to moving along said cutting route;
• a transmission unit respectively connected to said first blade holder and said second blade holder, wherein said transmission unit drives said first cutting unit and said second cutting unit to move along said cutting route;
• and
• a motor for driving said transmission unit;
• wherein said transmission unit comprises:
• a smaller bevel gear mounted on said motor;
• a bigger bevel gear mounted on a main axle, wherein said bigger bevel gear is engaged with said smaller bevel gear for driving said main axle to rotate when said motor works;
• and
• a flange slot mounted on an end of said main axle, wherein said flange slot is an oval-shaped slot, an oval plane of said flange slot is perpendicular to an axial direction of said main axle, said flange slot rotates with said main axle;
• wherein said first blade is mounted on said first blade holder, said second blade is mounted on said second blade holder, said first blade holder has a first flange, said second blade holder has a second flange, said first flange and said second flange are respectively engaged with said flange slot, in such a manner that said transmission unit drives said first cutting unit and said second cutting unit to move.