New Improved DrJoesDrillShaft

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Posted by Joe Johnson.   [PICTURE: SAME | NEW | HELP]


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 12/2/2000 7:27 PM MST



Hi all.

I have often recommended that teams make a custom output shaft for the drill transmissions. Last year I posted a sketch of a shaft that served many folks well.

I have made an improved shaft with an improved sketch.

The shaft is better because it is easier to make (the old shaft was a 'carry over' design that I had always intended to improve but never found the time) and it is intended to couple to a 3/8 inch shaft via a rigid coupling made by Ruland and available from McMaster (page 891 part number 61005K32 'One-Piece Clamp-On Coupling Steel, Without Keyway, 3/8' Bore, 7/8' OD'). It is also in the Small Parts catalog (I think).

The sketch is better because it has tolerances! There is a bit of a problem with the sketch in that some of the hidden lines became solid and a leader line to a 4 mm hole gets a little lost in the shuffle. But... for all its warts, it is still readable if you know your way around prints.

This shaft has been tested in our local robotics league (Oakland County Competitive Robotics Asso.). The were made to print by a local shop from the sketch. They worked great for the 15 teams or so that used them.

Good luck to all.

Joe J.