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普通的硬质合金镶片麻花钻,可用来取出断入工件内的丝锥。先用碳化硅砂轮修磨钻头的几何形状,然后根据断丝锥的大小来修磨钻头直径。用此钻头在断丝锥中心钻一合适的通孔,再用冲头将断丝锥击
An ordinary hardmetal panel twist drill that can be used to remove taps that break into the workpiece. Correct the bit geometry with a silicon carbide grinding wheel and then sharpen the bit diameter based on the size of the broken tap. Use this drill to drill a suitable through-hole in the center of the broken tap, then use a punch to tap the broken tap