Patent ID: 7591211
Filing Date: 2009-09-22
Classification: B26D,Y10T

Abstract:
1. A cutting apparatus comprising: a cutting platform; a first lateral plate and a second lateral plate arranged at opposed sides of said cutting platform; a first guiding track and a second guiding track arranged on said first lateral plate and said second lateral plate, respectively, and facing to each other; a motor disposed on said cutting platform; a gear set including a first gear part and a second gear part disposed on a first surface and a second surface of said second lateral plate, respectively, wherein said first gear part is connected to said motor, said second gear part is connected to a protrusion member, and the center line of said protrusion member is shifted from the center line of said second gear part; a cutting member arranged between said first guiding track and said second guiding track and movable along said first guiding track and said second guiding track; and a rotational direction switching unit interconnected between said protrusion member and said cutting member and including: a gliding channel for receiving said protrusion member therein and a rotating shaft having a handling element fixed relative thereto in a manner that allows said handling element to experience a substantially similar degree of rotation as said rotating shaft, wherein said rotational direction switching unit renders a linear cutting operation of said cutting member when said protrusion member is driven by said gear set to rotate in a circular motion, a gliding block including said gliding channel for receiving said protrusion member therein, said protrusion member being linearly moved along said gliding channel back and forth when said protrusion member is rotated in said circular motion, wherein the center line of said gliding channel is shifted from the center line of said gliding block, wherein said rotating shaft has a first end and a second end penetrating through said first lateral plate and said second lateral plate, respectively, wherein said second end of said rotating shaft is connected to an end of said gliding block such that said rotating shaft is rotated with synchronous linear movement of said protrusion member in said gliding block, wherein said handling element has a first end sheathed around said rotating shaft and a second end in contact with a sidewall of a hole of said cutting member, and wherein said handling element is upwardly or downwardly sustained against said sidewall of said hole such that said cutting member is linearly moved along said first guiding track and said second guiding track.