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<SPAN title=“少磨”首先是“不磨”，拿到钻头匆匆即磨，肯定是盲目的磨。 k="Less grinding " g="“少磨”首先是“不磨”，拿到钻头匆匆即磨，肯定是盲目的磨。" ? the mill. blind certainly grinding that hastily bit drill get ?to first?>Less grinding "first" grinding "to get the drill bit hastily that grinding certainly blind mill. <SPAN title=只有在刃磨前摆放好位置，才能为下一步的“磨好”打实基础，这一步相当重要。 k="" g="只有在刃磨前摆放好位置，才能为下一步的“磨好”打实基础，这一步相当重要。" of the to in important. ? very is step this step, next for order position sharpening placed only basis real fight Grinding?>"Grinding" to fight the real basis of only placed in sharpening position in order for the next step, this step is very important.
Here sharpening four formulas to guide the process, the better.
<SPAN title=口诀一：“刃口摆平轮面靠。” k="Rhymes: " g="口诀一：“刃口摆平轮面靠。”" on.? ? rely tread settle edge>Rhymes: "edge settle tread rely on."
This is the first step in the drill and grinding wheel relative position, often the student has yet to settle the edge and she leant on the wheel began sharpening. This will certainly wear well. <SPAN title=这里的“刃口”是主切削刃，“摆平”是指被刃磨部分的主切削刃处于水平位置。 a k="The " g="这里的“刃口”是主切削刃，“摆平”是指被刃磨部分的主切削刃处于水平位置。" ? the to by in is sharpening edge position. horizontal portion cutting main refers ?settle? edge, edge?>The "edge" is the main cutting edge, "settle" refers to the main cutting edge by the sharpening portion in a horizontal position. <SPAN title=“轮面”是指砂轮的表面。 k="" g="“轮面”是指砂轮的表面。" ? of the to grinding refers wheel. surface face? Round>"Round face" refers to the surface of the grinding wheel. <SPAN title=“靠”是慢慢靠拢的意思。 k="" g="“靠”是慢慢靠拢的意思。" ? the to rely mean. closer move slowly on? We>"We rely on" slowly move closer to the mean. The drill also can not contact with the wheel.
<SPAN title=口诀二:“钻轴斜放出锋角。” k="Formulas: " g="口诀二:“钻轴斜放出锋角。”" drill corner.? ? front release helical shaft>Formulas: "drill shaft helical release front corner."
Here refers to the positional relationship between the drill axis of the grinding wheel surface. <SPAN title=“锋角”即顶角118°±2o的一半，约为60°这个位置很重要，直接影响钻头顶角大小及主切削刃形状和横刃斜角。 k="Front angle " g="“锋角”即顶角118°±2o的一半，约为60°这个位置很重要，直接影响钻头顶角大小及主切削刃形状和横刃斜角。" ? of and the in very is this position edge cutting main bevel. chisel size shape angle point affect directly important, ° 60 approximately half, 2o ± 118 apex i.e.>Front angle "i.e. apex angle of 118 ° ± 2o half, approximately 60 ° in this position is very important, and directly affect the point angle of the shape of the size and the main cutting edge and chisel edge bevel. To prompt students memory used a 30 °, 60 °, 60 ° angle, 90 ° set square in students easy to grasp. Formulas a and formulas all refer to the relative position in front of the drill bit sharpening, both to be balanced, do not ignore gracefully beveled to settle edge and, or ignored settle edge in order to gracefully diagonal axis. Often it will be in actual operation these errors. At this point the drill ready to contact with the grinding wheel in the correct position.
<SPAN title=口诀三：“由刃向背磨后面。” k="Formulas: " g="口诀三：“由刃向背磨后面。”" the grinding edge back.? ? toward back>Formulas: "the grinding back edge toward the back."
Here is the slow start from the cutting edge of the drill along the entire flank grinding. This makes it easy cooling and grinding. Firmly entrenched formulas based on one, two, then drill can gently contact with the grinding wheel, the less amount of sharpening, grinding to observe the sparks of uniformity, the pressure is adjusted in a timely manner, and pay attention to the cooling of the drill. When cooling after the re-start sharpening to continue gracefully formulas one location, it is often in the beginner is not easy to grasp, and often will not help change the correctness of its position.
<SPAN title=口诀四：“上下摆动尾别翘。” k="Formulas: " g="口诀四：“上下摆动尾别翘。”" and Alice.? ? not tail swinging down up>Formulas: "up and down swinging tail not Alice."
<SPAN title=这个动作在钻头刃磨过程中也很重要,往往有学生在刃磨时把“上下摆动”变成了“上下转动”，使钻头的另一主刀刃被破坏。 k="This action is also very important in a drill sharpening process, often there are students in sharpening swing up and down " g="这个动作在钻头刃磨过程中也很重要,往往有学生在刃磨时把“上下摆动”变成了“上下转动”，使钻头的另一主刀刃被破坏。" ? the on been that bit drill main down damaged. has blade other so rotation, a? into>This action is also very important in a drill sharpening process, often there are students in sharpening swing up and down "into a" down rotation, so that the drill bit on the other main blade has been damaged. At the same time, the end of the drill can not Gaoqiao in the grinding wheel above the horizontal centerline, otherwise it would edge blunt, not cutting.