#wt900m

http://www.abitdrill.com/installation-and-use-of-drill-bits.html

The drill bit opener is a cutting tool used by general drills or drilling machines to cut out circular holes. The basic principle of the bit is to make the bit cut and rotate, cut the workpiece, and then remove the cuttings from the drilling groove.

 The commonly used bits are twist drill, flat drill, center drill, deep hole drill and trepanning drill. Although reamer and countersink drill can't drill on solid material, they are also traditionally classified as drills.

 Installation of drill bit opener: Slowly lift the drill box and put the four legs of the drill box into the four holes of the rotary table of the drill. According to the specification of bit cutting, select the corresponding core plate of bit box. Put the core plate of the lifting bit box into the bit box, and then match the bit groove to be installed with the convex point of the core plate of the bit box. Put the drill bit into the drill box, and the drill bit is stuck in the center of the rotary table. Then screw on the drill bit in turn to connect the nut drill pipe.

 Disassemble of bit: lift the drill pipe (with drill bit), and connect the drill box with the rotary table. Lift the drill pipe slowly so that the bit groove can correspond to the convex tip of the core plate of the bit box. Clamp the drill bit in the drill bit box and remove the drill pipe and drill bit in turn.