Patent ID: 6978707

Claim:
A cutting machine, comprising: a table frame; a power source; a cutting table slidably mounted on said table frame; a cutting head having a cutting blade arranged to be driven to rotate by said power source; a cutting head support bracket affixed at one side of said table frame to support said cutting head above the cutting table; and a miter cutting arrangement, which is provided between said cutting head support bracket and said cutting head, wherein the miter cutting arrangement comprises: a platform support frame which comprises a platform support arm, means for longitudinally mounting said platform support arm to said cutting head support bracket so as to support said platform support arm longitudinally extending above said table frame, and a platform pivot arm having an inner end affixed to said platform support arm and an outer end extended from said platform support arm; a head platform, which supports said cutting blade in a rotatable manner, having an outer side and an inner side; a pivot means for pivotally connecting said outer side of said head platform with said platform pivot arm in a perpendicular manner that said cutting head is able to be rotated about said head platform to a slanted position by lifting up said inner side of said head platform from said platform support frame; a miter supporting unit which comprises a miter support provided at said outer side of said head platform and a miter stopper provided at said outer end of said platform pivot arm, wherein said inner side of said head platform is lifted up to inclinedly rotate said cutting head until said miter support is blocked by said miter stopper to block a rotational movement of said head platform and substantially support said cutting head at said slanted position, wherein said miter stopper has a stopper body rotatably affixed to said platform pivot arm and a stopper head which is extended from said stopper body and protruded from said outer end of said platform pivot arm, wherein when said inner side of said head platform is lifted up to inclinedly rotate said cutting head, said stopper head of said miter support is driven to bias against said miter stopper so as to block said rotational movement of said head platform and substantially support said cutting head at said slanted position, wherein said miter support of said miter supporting unit has a tail portion substantially affixed to said outer side of said head platform and a head portion upwardly protruded from said head platform to bias against said stopper head of said miter stopper when said head platform is in said slanted position; a supporting means for supporting said inner side of said head platform with said platform support arm, so that, during said normal position, said outer side and said inner side of said head platform are respectively supported by said platform pivot arm and said platform support arm; and a locker means for selectively locking said cutting head at said normal position and said slanted position.