Tool drive assembly

Abstract

Abstract A TOOL DRIVE ASSEMBLY FOR CONVERTING ROTARY MOTION TO RECIPROCATING MOTION. A DRIVEN MEMBER IS ROTATABLY SUPPORTED IN A HOUSING AND INCLUDES A SHANK PORTION AND AN ENLARGED HEAD PORTION WITH A CENTER OF MASS OFFSET FROM THE AXIS OF ROTATION. AN INTERMEDIATE MEMBER HAS A CYLINDRICAL PORTION INTEGRAL THEREWITH AND DISPOSED IN A HOLLOW IN THE HEAD PORTION. A PEG EXTENDS UPWARDLY FROM THE INTERMEDIATE MEMBER AND FORMS A PART OF A CONNECTION MEANS WHICH IS CONNECTED TO A RECIPROCATING TOOL HOLDER MEMBER. THE INTERMEDIATE MEMBER AND THE CONNECTION MEANS HAVE COUNTERBALANCING MASSES WHICH, IN COMBINATION WITH ONE ANOTHER, COUNTERBALANCE THE OFFSET MASS OF THE HEAD PORTION DURING ALL ADJUSTED ROTARY POSITIONS OF THE INTERMEDIATE MEMBER RELATIVE TO THE DRIVEN MEMBER, WHICH IN TURN ADJUSTS THE LENGTH OF THE STROKE OF THE TOOL HOLDER MEMBER. A TOOL HOLDER ASSEMBLY INCLUDES A TUBULAR MEMBER EXTENDING FROM THE HOUSING WITH A DUST COVER ATTACHED TO THE TOOL HOLDER MEMBER AND SLIDABLY AND RECIPROCALLY DISPOSED ABOUT THE EXTERIOR OF THE TUBULAR MEMBER. A DRIVE MEANS INTERCONNECTS THE TOOL HOLDER MEMBER AND THE CONNECTION MEANS FOR TRANSMITTING THE RECIPROCATING MOTION. A KNURLED MEMBER IS DISPOSED ABOUT THE TUBULAR MEMBER ADJACENT THE HOUSING AND IS CONNECTED TO THE DUST COVER BY A SHAFT SLIDABLY DISPOSED IN THE KNURLED MEMBER FOR ROTATABLY ADJUSTING THE POSITION OF THE TOOL HOLDER MEMBER.

Inventors

• 👤 Joseph J Dancsik

Bibliographic Details