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去年山特维克公司推广了一种装不重磨刀片的套料钻,尺寸为2~1/4时至7时,孔深与孔径比为5:1.这种钻头称为新型T—MaxU 型套料钻.据报导,对加工直径超过2~1/4时的孔是一种最快、最经济的工具.其使用效果如下:
Sandvik last year introduced a loose-insert drill that measures a hole-to-aperture ratio of 5: 1 from 2 to 1/4 to 7 pm This bit is called the new T-MaxU It is reported that it is one of the fastest and most economical tools for processing holes with a diameter of more than 2 ~ 1/4, and its use effects are as follows: