9/6/22 Work Holding For Rails

Colin Szeto

Printed out in ABS a 3 part work holding Jig with the holes printed into the top and sides. Enables meeting the desired tolerances with available tools in the lab.

Attached this fancy clamp to the drill press for locating the rough location of the holes. There is some backlash between the x and y screws so holding the jig in place by hand is still necessary.

One problem has been chip clearing. This has been caused by keeping the part within the holders for all 3 drilled holes. This can be remedied through extracting the part out of the clamps and clearing the chips between the drilling.

New jig will take 2 hours.

Later on this jig was not required as the the cut rails were cut slightly larger than one another. This was unintentional but aided in work holding.

First to fourth

1.5085

1.5105

1.5235

1.5430

The material was inserted into the jig from smallest to largest. This meant that the jig would be slightly enlarged after each set of hole drilling. Yet due to the rail increase in length the jig would still snug around the part.