The utility model belongs to the technical field of step
drill bit, especially involve a step
drill bit with
laser alignment mark, in view of the inconvenient disassembly problem of prior art, present and propose the following scheme, including the
drill rod, the bottom end of drill rod has the
drill bit to wear, and the inside of drill rod is provided with the limit slot, the outer wall of drill rod is provided with the sliding slot, and the inside of sliding slot is provided with the adjusting mechanism, the utility model first drill rod's limit slot and sliding slot, can let the connecting plate and mounting block wear and slide, cooperate with the clamping groove and the clamping block to let the sleeve pass through and drill rod threaded connection to adjust the position, can drive
laser lamp to slide in the drill rod and align the center point of
drill bit, can with the center point of
drill bit let the
laser shoot to work piece, to improve the accuracy of
processing process, cooperate with the sleeve and drill rod threaded connection, can carry out the quick disassembly and maintenance to laser lamp, improve the flexibility and applicability of overall use.