초록 ▼

A miter cutting arrangement for a cutting machine is provided to accommodate cutting work at an angle or a bevel for precisely cutting on a work piece. It includes a platform support arm longitudinally mounting to a cutting head support bracket, a platform pivot arm transversely extended from the pl

A miter cutting arrangement for a cutting machine is provided to accommodate cutting work at an angle or a bevel for precisely cutting on a work piece. It includes a platform support arm longitudinally mounting to a cutting head support bracket, a platform pivot arm transversely extended from the platform support arm, a head platform pivotally connected with the platform pivot arm to support a motor, a miter supporting unit, and a locker device for selectively locking the cutting head at the normal position and the slanted position. The miter supporting unit includes a miter support provided at an outer side of the head platform and a miter stopper provided at an outer end of the platform pivot arm to block the miter support when the head platform is rotated at the slanted position.

대표청구항 ▼

1. 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

1. 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; anda 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; anda locker means for selectively locking said cutting head at said normal position and said slanted position.2. A cutting machine, comprising:a table framea 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; anda 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;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;a locker means for selectively locking said cutting head at said normal position and said slanted position;a reinforcing panel, having an arc-shaped through slot, rearwardly extended from said cutting head support bracket, and a screw knob having a screwing head extended through said through slot to rotatably affix into a screw hole provided at a rear end of said platform support arm, so as to adjust a projectile angle of said head platform with respect to said cutting table by rotating said rear end of said platform support arm by said mounting means; anda reinforcing sleeve, having a longitudinal adjustment slot, securely mounted at said rear end of said platform support arm, a regulating ring, having an inclined tuning slot, rotatably supported in said reinforcing sleeve to overlappedly align said tuning slot with said adjustment slot so as to form a locking hole, and a fine-tuning locker having a locker head penetrated through said reinforcing panel and arranged to insert into said locking hole, so as to finely adjust said projectile angle of said head platform.3. The cutting machine, as recited in claim 2, wherein said reinforcing sleeve has an upper threaded portion and a lower threaded portion wherein said adjustment slot is longitudinally provided between said upper and lower threaded portions of said reinforcing sleeve, wherein said miter cutting arrangement further comprises a lower locker having an outer threaded portion rotatably screwed at said lower threaded portion of said reinforcing sleeve and an upper locker having an outer threaded portion rotatably screwed at said upper threaded portion of said reinforcing sleeve in such a manner that said regulating ring is securely sandwiched between said upper and lower lockers, so as to align said tuning slot of said regulating ring with said adjustment slot of said reinforcing sleeve.4. The cutting machine, as recited in claim 2, wherein said fine-tuning locker comprises a tubular locker body securely affixed to the reinforcing panel, a locker arm slidably inserted into said locker body to penetrate through said platform support arm at a position that said locker head is adapted to be inserted into said locking hole, and a resilient element received in said locker body for applying an urging pressure against said locker arm to push said locker head of said locker arm towards said locking hole.5. The cutting machine, as recited in claim 2, wherein said fine-tuning locker comprises a tubular locker body securely affixed to the reinforcing panel, a locker arm slidably inserted into said locker body to penetrate through said platform support arm at a position that said locker head is adapted to be inserted into said locking hole, and a resilient element received in said locker body for applying an urging pressure against said locker arm to push said locker head of said locker arm towards said locking hole.6. A cutting machine, comprising:a table frame;a power source;a cutting table slidably mounted on said table framea 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; anda 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 stopper body of said miter stopper is non-coaxially extended from said stopper head thereof so as to adjust an inclination angle of said head platform with respect to said cutting table by rotating said stopper head via said stopper body;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; anda locker means for selectively locking said cutting head at said normal position and said slanted position.7. The cutting machine, as recited in claim 6, wherein said miter supporting unit further comprises a locking element to securely lock up said stopper body at a rear end thereof to said outer end of said platform pivot arm after a fine adjustment of said inclination angle of said head platform is set.8. The cutting machine, as recited in claim 7, 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.9. The cutting machine, as recited in claim 8, wherein said miter cutting arrangement further comprises a reinforcing panel, having an arc-shaped through slot, rearwardly extended from said cutting head support bracket, and a screw knob having a screwing head extended through said through slot to rotatably affix into a screw hole provided at a rear end of said platform support arm, so as to adjust a projectile angle of said head platform with respect to said cutting table by rotating said rear end of said platform support arm by said mounting means.10. The cutting machine, as recited in claim 9, wherein said miter cutting arrangement further comprises a reinforcing sleeve, having a longitudinal adjustment slot, securely mounted at said rear end of said platform support arm, a regulating ring, having an inclined tuning slot, rotatably supported in said reinforcing sleeve to overlappedly align said tuning slot with said adjustment slot so as to form a locking hole, and a fine-tuning locker having a locker head penetrated through said reinforcing panel and arranged to insert into said locking hole, so as to finely adjust said projectile angle of said head platform.11. The cutting machine, as recited in claim 10, wherein said reinforcing sleeve has an upper threaded portion and a lower threaded portion wherein said adjustment slot is longitudinally provided between said upper and lower threaded portions of said reinforcing sleeve, wherein said miter cutting arrangement further comprises a lower locker having an outer threaded portion rotatably screwed at said lower threaded portion of said reinforcing sleeve and an upper locker having an outer threaded portion rotatably screwed at said upper threaded portion of said reinforcing sleeve in such a manner that said regulating ring is securely sandwiched between said upper and lower lockers, so as to align said tuning slot of said regulating ring with said adjustment slot of said reinforcing sleeve.