Unfamiliar Drawing Callout

[gary10]

I just received a 1982 print of a pump inducer. The part has 4 blades that are angled to the rotational centerline and are tapered from the hub to the tip (3°).

The Notes read:

1. Use .012/2° cam set

2. Generate the outer side with .012/2° curved cam

3. Generate the inner side with .012/2° flat cam

Is anyone familiar with these callouts (methods)? Searches haven't turned up anything.

 

[tomwalz]

might try practicalmachinist.com

Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessors.com

Good engineering starts with a Grainger Catalog.

 

[berkshire]

Sounds like a set of instructions for a cam operated mill or lathe i.e. Hardinge.
B.E.

The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor

 

[mcgyvr]

Yep that drawing/part was probably run in-house at one time and those are specific instructions for the machine operators they had.

 

[ornerynorsk]

Sounds like Acme or Brown and Sharpe set-up notes.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.