硬质合金钻头的修磨

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1 Grinding of relief flank 后隙面的研磨

1）.Utlize a drillgrinding or a universal tool grinder.Set the point aging to 140’degrees and grind relief flank as having 8-12degrees (B)请使用钻头磨床或万能刀具磨床将后隙面研磨为前端角度为 140'并如图(B)所示接近8~12°的第2个角。

2）.Fix the drill after incline it. Then grind relief flank as having 20" degrees assecondary. At this time, regrind it to meet the edge line of these two reliefsin the center line(C).

钻头继续向后倾斜 10°,固定后将后隙面研磨至 20°的第 3个角。此时，将第2、3 个角之间的棱线作为钻殖中心进行研磨。

2 WEB THINNING 薄削

1）. As show (D), incline drill in 40~55"degrees then grind the corner ofsecondary relief remaining 0.05~0.1mm. At this time, give attentionnot to grind the center of drill then remain approx 0.1mm.清按照交叉(X)轨迹进行薄削。如图(D)所示，钻头倾斜 40~45°将第3个角部份研磨到剩下0.05~0.1mm 为止。此时请注意不要切到头的中心，钻头横刃请保留0.1mm左右。

2）.Rotate drill in 10~15" degree then grind it. And secure the pocket of105~110"degree.将钻头横刃旋转 10~15°进行研，并确保 105~110°的凹槽部位。

3.Grinding 研磨

1）.Grind chamfer on the cutting edge and thinning part.

切削刃与薄削刃的交叉点保持一个半径 R 并倒圆。

2）.Then grind the corner of the cutting edge and R thinning.

沿着刀片的整周外边进行均衡的研磨。

4）Inspection至此完成了再研磨

Please check the following points before using确认以下内容并进行再涂层后使用。

1）eLip height exist within 0.02mm.

切削刃高度请保持在 0.02mm 内。

2）oNo remainder of damage on cutting edges after regrinds.

有无盛留的刀刃缺损未被研磨。

3）eGrinding is correct or not.

研磨加工是否正确。

4）eBurry by regrind is removed研磨的毛刺是否去除干净。