Oscillatory motion device for drill press

A device for imparting oscillatory motion to a chuck mounted for rotation within and for axial movement with an axially movable quill of a drill press, the device comprising:

• a rigid frame;
• an input shaft rotatably supported on the frame;
• a clutch mounted to selectively engage the input shaft;
• a lever pivotally mounted to the frame and having one end projecting sufficiently from the frame to engage an axially movable quill of a drill press;
• and
• a drive coupling between the rotatably supported input shaft and the pivotally mounted lever.

A drill press having an axially oscillating chuck comprising:

• a frame;
• a motor having an output shaft;
• a driven shaft laterally spaced from the output shaft;
• a quill mounted on the driven shaft for rotation of the driven shaft within the quill and for axial movement of the quill with the driven shaft;
• a chuck mounted on one end of the driven shaft;
• a first flexible drive coupling between the output shaft and the driven shaft, the flexible coupling including two spaced-apart legs extending generally between the output shaft and the driven shaft;
• an oscillatory motion device positioned in the drill press laterally between the output shaft and the driven shaft and between the legs of the first flexible drive coupling, the device being coupled with the quill so as to cyclically reciprocate the quill in an axial direction;
• a rotating power take-off driven by one of the output shaft, the driven shaft and the first flexible drive coupling;
• and
• a second drive coupling between the oscillatory motion device and the rotating power take-off;
• wherein the quill is moveably supported on the frame and the motor is fixedly supported on the frame with the output shaft and the driven shaft parallel and laterally spaced from one another.

A drill press having an axially oscillating chuck comprising:

• a motor having an output shaft;
• a driven shaft;
• a quill mounted on the driven shaft;
• a chuck mounted on an end of the driven shaft;
• a first drive coupling between the output shaft and the driven shaft;
• a rotating power take-off driven by one of the output shaft, the driven shaft and the first drive coupling;
• a lever having a first end coupled with the quill, the lever being mounted for movement of the first end with axial movement of the quill on the driven shaft;
• and
• a second drive coupling between the lever and the rotating power take-off, the second drive coupling including a rotating member and an arm eccentrically coupled at a first end to said rotating member and at a second end to said lever so as to translate rotational movement of said rotating member into generally linear movement at the second end of said arm.

A drill press having an axially oscillating chuck comprising:

• a motor having an output shaft;
• a driven shaft;
• a quill mounted on the driven shaft;
• a chuck mounted on an end of the driven shaft;
• a first drive coupling between the output shaft and the driven shaft;
• a rotating power take-off driven by one of the output shaft, the driven shaft and the first drive coupling;
• a lever having a first end coupled with the quill, the lever being mounted for movement of the first end with axial movement of the quill on the driven shaft;
• a second drive coupling between the lever and the rotating power take-off;
• and
• a clutch between said second drive coupling and said rotating power take-off.

A drill press having an axially oscillating chuck comprising:

• a motor having an output shaft;
• a driven shaft;
• a quill mounted on the driven shaft;
• a chuck mounted on an end of the driven shaft;
• a first drive coupling between the output shaft and the driven shaft;
• a rotating power take-off driven by one of the output shaft, the driven shaft and the first drive coupling, the rotating power take-off including a rotating member:
• a lever having a first end coupled with the quill, the lever being mounted for movement of the first end with axial movement of the quill on the driven shaft;
• a second drive coupling between the lever and the rotating power take-off;
• an arm having a first end coupled with the rotating member for at least some translational movement of the arm with rotation of the rotating member;
• and
• a releasable coupling between a second end of the arm and a second end of the lever opposing the first end of the lever.

A drill press having an axially oscillating chuck comprising:

• a motor having an output shaft;
• a driven shaft laterally spaced from the output shaft;
• a quill mounted on the driven shaft for rotation of the driven shaft within the quill and for axial movement of the quill with the driven shaft;
• a chuck mounted on one end of the driven shaft;
• a first flexible drive coupling between the output shaft and the driven shaft, the flexible coupling including two spaced-apart legs extending generally between the output shaft and the driven shaft;
• an oscillatory motion device positioned in the drill press laterally between the output shaft and the driven shaft and between the legs of the first flexible drive coupling, the oscillatory motion device being coupled with the quill so as to cyclically reciprocate the quill in an axial direction and including a tension limiting link coupling said oscillatory motion device with said quill, said link including a detent block coupled with said quill for translational movement with translational movement of said quill and an arm releasably engaged directly with said detent block;
• a rotating power take-off driven by one of the output shaft, the driven shaft and the first flexible drive coupling;
• a second drive coupling between the oscillatory motion device and the rotating power take-off;
• a base;
• a head supporting the motor and the quill;
• a column supporting the head on the base;
• and
• a table at least pivotally supported on the column, the table having an opening in the form of a shaped recess along one side edge of the table, the table being pivotable to position the recess laterally adjoining the chuck.