×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Machining non parrelell surfaces with edgecam

Machining non parrelell surfaces with edgecam

Machining non parrelell surfaces with edgecam

(OP)
We are using a 3 axis Leadwell machining center with edgecam for cam software. When machining a slope from one flat surface to another the only success we have had is using parrelell lace and a ball nose end mill. This is impractical because the run time is enormous if a reasonable finish is achieved. Any suggestions would be appreciated.

RE: Machining non parrelell surfaces with edgecam

If the surface is flat in 2 axis', you can re-orient the part and face it.  If the surface is not large, you can use a form cutter to achieve the angle.  Other than that, if you wish to 3d mill, you are stuck with that single option.

RE: Machining non parrelell surfaces with edgecam

If you have conventional milling machine tool (traditional Cincinnati) you can fly-cut the flat surface with a form tool.
Fly cutting is a traditional way of machining a flat surface with a blend in radius, other ways are to use a shaping machine or a planning machine depending on the size of the material.

You have not given any more information so we can only give limited feedback.

RE: Machining non parrelell surfaces with edgecam

Would running a bull nose cutter "up the slope" not reduce the time involved?

RE: Machining non parrelell surfaces with edgecam

(OP)
Thank all for ideas. it seems realigning the part and cutting slope as a flat surface is ideal. I envision drawing stock with the top parrellel with the surface and putting a CPL aligned on a corner and picking the feature manually. Does that sound practical?

RE: Machining non parrelell surfaces with edgecam

If the part is completed using two separate setting you still have the problem of blending in the two separate cuts, but if it is not critical this may suffice. Generally speaking operations should be completed as far as is practicable in the same setting.

Hence when turning a coupling for instance the whole part should be roughed out both sides and then the back end completed (because of its open tolerances) and then the front flanged end last. This will ensure the Bore, O.D. and spigot (all precision tolerances)will be completed in the same setting as well as the scribed PCD for the driller. The fitter when aligning the coupling then will have a true surface to clock the OD when setting, and this reference is true to the spigot and bore.

Only you can decide if a double setting will do.

RE: Machining non parrelell surfaces with edgecam

depending on the size of the part, it sounds like going to a 4th axis with a rotary table is in order.

RE: Machining non parrelell surfaces with edgecam

A few questions:

1. What is the approximate distance along 'X' and 'Y' for the sloped section?
2. Approximate slope angle?
3. Material?
4. Current machining parameters (SFM, IPT, DOC, WOC) for rough and finish?

Thanks.
 

The Manufacturing Reliquary
http://cmailco.wordpress.com/

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources