Re: speed (frequency)

> From: Charles Hopkins <chopkins@...>
>
>>Matt wrote:
>>I have a nice Excel spreadsheet that shows this effect if you're (or anyone

is) interested.

>>If we go to the external hardware I described in a previous post we can

reduce the size

>>of the frequency steps to a very small size throughout the usable range of

traverse rates.

>
> I would like to look at your spread sheet. Please mail me a copy or post

it somewhere.

OK:
http://users.erols.com/mshaver/stepfreq.xls

> I thought I might be able to make some of the decisions a bit easier for

the second machine.

> I was wrong. I know what I like and don't like, using the Ah-ha setup.

There is a lot of factors to consider setting up a retrofit.

> I do a lot of small mill work so I think I need to be concerned about

resolution first and speed second.

> Then on the other hand, speed is time and time is money. It is usually a

good approach and speed which wins the prize.

I guess the only thing I can say is that all the above is true! It's
important to realize that a high rapid traverse rate speeds up your operation
somewhat, but a lot of time is consumed programming, setting up, changing
tools, etc. On a part with a lot of complex contour milling, it may matter
little. On parts where you drill 10,000 holes, it may be the make or break
factor!

Matt