Shenzhen Chuangying Times Technology Co., Ltd. |
High precision woodworking, metal mortising machines One year warranty, guide use mortising machine for woodworking
Voltage | 220v |
power | 1100w |
Warranty | 1Year |
forms of work | Manual |
rated power | 1.1kw |
Rated voltage | 220V |
Excerpted from the Internet, for reference only
For drills with a diameter of less than m, Mitsubishi recommends
that an initial hole with a depth of 1 to 2 times the diameter be
drilled with a rigid center drill first. The tip angle of the pilot
drill should be equal to or greater than the micro-drill apex angle
of the final drill hole. If the apex angle of the center drill is
small, then when the micro-drill is cut in later, the two cutting
edges contact the workpiece first, which is likely to cause
chipping.
If the pilot drill is not used, this method can be used: the feed
rate at the beginning of the micro-drill is much lower than the
normal feed rate thereafter. For example, the diameter of the drill
bit is 1.61m, the hole depth is 12.7mm, and the normal feed rate is
specified as 0.0508mm/r