Apparatus for eliminating backlash in standard geared...

Details Apparatus for eliminating backlash in standard geared... Apparatus for eliminating backlash in standard geared...

B - Operations, Transporting

23

Q

B23Q 5/56 (2006.01) F15B 15/14 (2006.01) F16J 1/10 (2006.01)

Patent

CA 2079457

2079457 9213673 PCTABS00014 An improved drilling head comprising a machine quill (2) for receiving a drill bit (1), means for rotating the machine quill (2) and thereby also the drill bit (1) received therein, hydraulic or pneumatic apparatus for exerting a downward force on the machine quill (2), and a rack (6) and pinion gear (8) for exerting a reactionary force on the machine quill (2) for regulating downward movement of the quill (2) and thereby eliminating backlash in the drilling head.

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