Subject: alloy spacer
From: "rotaryeng@earthlink.net" <rotaryeng@earthlink.net>
Date: 4/18/2016, 6:43 AM
To: A10-me-earthlink



Paul,  Hopefully this will come through.  I need this in a form that
a cnc will read.  It is an alloy spacer to hold my flex drive up from
the face of the flexplate by 20mm.  If I have stuffed it up I can try
again.  Finally starting to make progress with new engine and than
test the reduction drive.  What price are the gear sets over there at
the moment?

Neil.

First we have to translate the nomenclature  from Oz to US :-)

I am not sure what you are trying to do.

Take a look at these pictures and rewrite your request.

I will send it as a zipped  IGES file and your NC shop probably has
the Solid Works program that will load this and will generate the NC
mill program.

The flex plate has a pilot on the counter weight so the bolt holes
have some lee way in diameter and bolt circle position. One never
pilots on the bolts themselves.

The pilot diameter is 77.74 mm which is about 3.000 inches. I think
the rotary was designed in inches back in 1969.

Paul Lamar

Paul, he is saying that he needs the file type that a CNC machine
reads, G-CODE ! He may not have a CAM program, or he just wants to
walk into a CNC job shop and have it done.

Steve Carlisle

Possibly. G code is not standardised. I took a course in it years
ago but I forgot almost all I knew about it :-) It is unlikely any
machine shop now a days cannot handle IGES files in SolidWorks or
Rhino and print out the dimensions if they did it in G Code. There
are plenty of programs that convert SolidWorks files to G code if
they go that route.

The main problem is I cannot figure out what Neal wants.

I think he wants to space the flex plate back from the counter weight
but I am not sure. The counter weight is essential.


Paul Lamar



Paul, yes you are right, G-Code is not standardized the world over, The
standard in North America is RS-274. So I am not sure where Neil is from.
Are there options for different machine controllers in RHINO ? Do you have
to send the RHINO standard file output to a CAM program? It has been over
10 years since I played around with CNC. I am currently looking at Cad 3D
programs, ViaCad9 Pro to be specific! So much to learn.
Steve Carlisle

Rhino does not export G code directly. I don't think Solid Works does
either. Rhino exports about two dozen file interchange files. I don't have
the list handy but google will probably know. The IGES is the most popular.
STP, AKA STEP, is a popular second. Larry Childs would know as he has a
big NC shop.


Rhino has a very easy learning curve. I have a professor friend at the
local college that teaches both Rhino and Sold Works. He says the students
start having fun with Rhino after the first ten minutes. Solid Works is
a real up hill battle. The reason this is so  is the screen is divided into
four panels, Front view, top view and side view. What you draw in
those traditional views appears in the fourth panel in 3D.

I have been using it for about ten years now so if you need help
let me know. Also Rhino is much better than solid works at compound
surfaces such as found on cowls.

Once one learns a 3D program one does not know how one got
along with out it.

Paul Lamar

The Rotary Engine free News Letter. Powered by Linux. If you want off
the list PLEASE let me know and I will remove  you.  ACRE NL web
site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
Copyright 1998-2016 All world wide rights reserved.