Do you know how to sharpen drill bit for steel?For most people, it is difficult,because it need some tips, some knowlegdea and some experience.So let me share some tips and experience to you.I hope it can be a little bit more help when you need it later.
The edge with the wheel surface.
Before sharpen the drill bit for steel, the main cutting edge of the drill bit for steel and the grinding wheel surface are placed on a horizontal surface, that is to say, when the cutting edge contacts the grinding wheel surface, the whole cutting edge is to be worn. This is the first step of the drill bit for steel and the grinding wheel relative positions, positions and then gradually to the surface by grinding wheel.
The drill and the grinding wheel surface to axis oblique 60 degree angle.
This perspective is a bit sharp angle, this point of view is wrong,it will directly affect the the shape of the size of the angle of the drill bit for steel and the main cutting edge and chisel edge angle. Here is the relationship between the axis of the drill bit for steel and the surface of the grinding wheel, take 60 degrees on the line, this angle is generally more able to see. Here to pay attention to the drill grinding before the relative horizontal position and angle position, two overall, don't in order to settle the edge while ignoring the set angle, or to set the angle while ignoring the straight edge.
3.by the edge grinding back behind.
After the edge of the grinding wheel is contacted with the grinding wheel, the cutting edge is to be worn from the main cutting edge, and the grinding wheel is first contacted with the cutting edge of the drill bit. Bit penetration can be gently contact wheel, conduct a lower amount of grinding, and pay attention to spark the uniformity of observation, When the blade temperature is high, the drill bit should be cooled in time.
The drill edge to swing up and down, tail bit not alice.
This is a standard drill bit grinding action, this is the most critical step,see the drill bit for steel grinding is good or bad, and this has a great relationship.