Device for driving a drilling and/or impacting tool

Details Device for driving a drilling and/or impacting tool Device for driving a drilling and/or impacting tool

B - Operations, Transporting

23

B

77/15

B23B 45/00 (2006.01) B25D 11/00 (2006.01) B25D 11/06 (2006.01) B25D 16/00 (2006.01)

Patent

CA 1235003

ABSTRACT A device for driving a drilling and/or impacting tool has a shaft journalled in a housing so as to be rotatable, one end of the shaft being connectable with the tool whereas the other end is accessible for an oscilla- tory impact body movable in the housing by means of a guide. A rotatable driving shaft, through a transmission, sets the tool shaft into rotation and/ or the impact body into movement. The transmission comprises means for con- verting the rotary movement of the driving shaft into an oscillatory movement of a driving element, which is connected through an elastic member with the impact body. The elastic member is a metal leaf spring that has a non-linear spring characteristic curve. The driving element is a supporting arm extending along the leaf spring and pivotally journalled in the housing.

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