Drawing in English & metric

[BuxtonMachine]

I have blueprints for a part which is drawn using english dimensions to drill ,tap (10-32, 8-32}& contour but it also has a hole pattern using metric (M3-.5) threads. Is there a way to draw the part in english and then select a metric tap from the library? I am using version 8.1

[Eric Witthus Prototek Engineering]

When I had to do it, I just switched into my metric library, grab the tool, go in and edit it, and divide the dim's by 25.4 at that point, you can save it back into your english library.

[CNCme]

Good Day,

Same idea as eric but you dont have to switch to metric.

OK here is what I do

 

Select the metric holes to drill and create an operation

create a tool - RH tap for M3 X .5

In the "threads" field type

1 /(divided) by (.5 Pitch * .03937)

like this:

1/.5*.03937 or

1/.5/25.4

hit enter to calculate

should = 50.8 TPI(thread per inch).

 

Put 3/25.4 in the diam. feild for 3MM diam.(.118).

If you want to see a tool comment, go to define tool parameters page and type M3 X .5

in the comment field

and set rpm to 1000 and the feed should be 19.685

.

and now you have created a .118-50.8 tap

now save it and you could create a library

of american metric taps.

 

Tony G

CNCme Engineering LLC

X Beta Site

Almost Employed Senior Programmer

N.E Massachusetts - Southern New Hampshire

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[ 05-02-2006, 02:46 PM: Message edited by: CNCme ]

[BuxtonMachine]

Thankyou for the quick responses and helpful info. I'm working on it right now.

 

Nyle Buxton