A position controlling device for a carpenter angle drill/hollow chisel mortiser having a mounting stud with a sidewall, a moving head slidably mounted on the mounting stud and having a side, a drill seat securely mounted on the moving head and having at least one drill, and a motor securely mounted on the drill seat behind the moving head to drive the at least one drill, and the position controlling device having:
- a mounting group being adapted to securely mount on the sidewall of the mounting stud, and having
- two crossbars being adapted to transversally and securely mount on and extend from the sidewall of the mounting stud at an interval, and each one of the crossbars having
- a free end being adapted to extend outwardly from the sidewall of the mounting stud;
- an external surface;
- and
- a mounting hole radially formed through the external surface of the crossbar near the free end of the crossbar, and the mounting holes of the two crossbars aligning with each other;
- and
- a bridge bar connected to the crossbars, mounted through the mounting holes of the crossbars, being adapted to be parallel with the sidewall of the mounting stud, and having
- an external surface;
- a top end extending out of the external surface of one of the crossbars;
- and
- a bottom end extending out of the external surface of the other crossbar;
- a positioning group adjustably connected to the mounting group, and having
- a bottom limiting block adjustably connected to the bridge bar between the crossbars, and having
- a limiting bolt securely mounted around the bridge bar;
- and
- a rotating button securely connected to the limiting bolt, and having an abutting end pressed against the external surface of the bridge bar via the limiting bolt;
- a top limiting block adjustably connected to the bridge bar between the bottom limiting block and one of the crossbars, and having
- a limiting bolt securely mounted around the bridge bar above the limiting bolt of the bottom limiting block, and having an external surface;
- and
- a rotating button securely connected to the limiting bolt of the top limiting block, having an abutting end pressed against the external surface of the bridge bar via the limiting bolt of the top limiting block;
- a holding frame securely connected to the limiting bolt of the top limiting block, and having
- an inner end;
- an outer end;
- a sidewall securely connected to the external surface of the limiting bolt of the top limiting block near the inner end of the holding frame;
- an open bottom;
- and
- a receiving chamber formed in the holding frame and communicating with the open bottom of the holding frame;
- and
- a circuit breaker securely mounted in the receiving chamber of the holding frame via the open bottom of the holding frame, and having
- a bottom;
- an outer end;
- a contacting slice elastically connected to the bottom of the circuit breaker, transversally extending out of the open bottom of the holding frame, and having
- a contacting end extending adjacent to the bridge bar between the limiting blots of the limiting blocks;
- and
- a bottom face;
- and
- an electric wire connected to the outer end of the circuit breaker, extending out of the outer end of the holding frame, and being adapted to electrically connect to the motor;
- and
- a retaining arm being adapted to securely connect to the side of the moving head, movably extending along the sidewall of the mounting stud between the limiting bolts of the limiting blocks, selectively abutting the contacting slice of the circuit breaker, and having
- a proximal end being adapted to securely connect to the side of the moving head;
- and
- a distal end extending along the sidewall of the mounting stud, and selectively pressed against the bottom face of the contacting slice to enable the circuit breaker at a turn-off condition.