Arrangement in hand-held button-bit grinding machines

Details Arrangement in hand-held button-bit grinding machines Arrangement in hand-held button-bit grinding machines

B - Operations, Transporting

24

B

51/46

B24B 3/33 (2006.01) B24B 23/02 (2006.01) B24B 55/05 (2006.01)

Patent

CA 2017335

An arrangement in hand-held grinding machines intended for grinding the buttons of button drill-bits and pro- vided with a driven spindle which carries a grinding disk. The grinding disk presents a profiled groove for shaping respective buttons of the bit to their intended tip profile. In order to enable buttons to be ground quickly and effectively with the aid of a hand-held grinding machine without needing to rotate the button to be ground about its own longitudinal axis, there is provided a spring-steel guide-spring (17) which is mounted fixedly in relation to the grinding disk (4) and which presents on both sides of the disk (4) obliquely and inwardly extending fingers (24) which are intended to engage the button (6) to be ground when the grinding disk (4) is brought into engagement with the button (6).

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