It is then drilled with a long drill bit. Drilling, to strictly control each cutting position and cutting tool length, Japanese HD drill pipe processing harmonic SHD-25-100-2SH and into the tool can not be too fierce, so as not to twist the drill. After each exit, be sure to clean up the cuttings on the drill pipe and lubricate it.

Drilling LMM below the hole, because the rigidity of the drill is very poor, strength is not enough, spiral groove is very narrow and small, Japanese HD drill pipe processing harmonic SHD-25-100-2SH chip is very easy to plug, so the drill is easy to break, fall in the hole is not easy to take out, resulting in the scrap of the workpiece. Therefore, the following aspects should be paid attention to when drilling microholes:



Before drilling, make a sample flush hole in the position of drilling or drill a positioning hole with a small center drill. When drilling, Japanese HD drill pipe processing harmonic SHD-25-100-2SH, feed force should be small, prevent bit bending, feed to be stable; In the machine tool without micro feed, can be installed on the feed mechanism of a *** table,