Help with drawing a part

[TomG]

(01-02-2014, 06:43 AM)Mayhem Wrote: Ken has very kindly offered to make a part for my mill that is no longer available and I need to be able to provide a good drawing of the part.

My drawing skills are not that good and there is a fair amount of detail in the part, in terms of the shape, holes and a slot. There is also a missing part, which I can extrapolate from pictures I have and also from the drawings provided in the Kondia manual.

Below are some pictures of the part from all angles, as well as some from another mill. The front view is fairly straight forward but the view from the top has me a little confused, as there are 3 holes and a counterbore running front to back, as well as a hole and a slot running left to right (the slot only part way), so it is going to get pretty busy. When looking at the front, there is a semicircular cut out at about 315°, which I am also unsure how to draw.

Should I have more than three projections (front, side, top)?

Darren,

You'll need a front view (top pic) to show the part outline, mounting holes, large counter-bored hole and the hole for the lever, a left side view to show the slot width and depth in the missing piece, an auxiliary view on roughly 45º to show the cast slot, a back view to show the raised hub and a bottom view to show the slot length in the missing piece.

I have to agree that the part looks VERY similar to the corresponding part on a Bridgeport. It's called a feed trip bracket and Google Images is full of them. There is also an auction for one on ebay accepting offers.

Tom