[7161843]

I am looking for some information /drawings/ microfilm/ photographs / first hand accounts of the tooling and or equipment used to mill the cam surfaces into the slide, operating(part no.7161843). I have a print purchased from e-bay which I have used so far. I have been using this print to create a 3D solid model. Right now I'm down to the last feature in the model- but I'm at a stand still. (cam slot) I'm not sure how to interpert the following callout 2.54 LEAD .185 DIA-.010 CUTTER,SET CL OF CUTTER ON CL. If the lead is applied to the endmill itself then I should be able to apply an angle of 2.54 degrees and the cut should look the same on the model and on the drawing? They don't. Any "old time" GM guys/gals still out there? I'm wondering if this is a case of two prints. One used by the manufacturers to produce the components and one used by the arsenal system to design/inspect the components? Photographs or drawings of the parts in the machining fixtures would be outstanding. Thanks in advance.

 

[PA28R200]

It is not A 2.54 deg. Lead, just lead.

Look up thread pitches and a universal milling machine with a gear driven dividing head.

Degrees are not a consideration but the distant traveled in 360 degrees at a given diameter.

it is a helical cut not an angular one, vertical and on c/l, degrees are only used to limit the travel of the helix from start point to finish.

you cannot put an angle on the cutter unless the part calls for "pitch", that creats the second component of a compound angle, lead is first.

you can offset the cutter to achieve pitch angle if there is no interference from the cutter

This is what we applied when making rifling broach lead bars.

If i did not explain this properly, sorry.