本文介绍了一套测试装置，用以测试钻头在大钻压下任意转速的牙齿受力。
This paper has introduced a set of test device to examine the loads on teeth of the bit at different rotary speed and under high bit-weight.
在钻机上的每一种装置都直接或间接地有助于钻头粉碎或切割岩石。
Everything on a drilling rig directly or indirectly assists the bit in crushing or cutting the rock.
本装置采用圆锥表面磨法对钻头进行后面刃磨，可保证磨出的钻头具有合理的后角，对称精度高。
The device is posterior cutter grinding to drill in cone surface grinding method that it can vouch for drill with reasonable back Angle, and symmetry precision is high.
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