×
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

Centerless sphere grinding?

Centerless sphere grinding?

Centerless sphere grinding?

(OP)
Can anyone point me to a link (or provide a short description) of how a centerless machine is set up to grind spheres? I've found references to use for billiard/bowling balls etc, but no concrete info. It is my understanding that this is not the same process used for bearings (rill-filing/plate lapping not sure of name, but concentric grooves on counter-rotating plates...) but closer to conventional wheel-regulated centerless grinding.

Trying to visualise how sphericity is acheived on a setup that can grind short plugs with no barreling. My suspicion is that the wheel axes aren't parallel but...

This is a general interest question btw. I have a project on the go that piqued my interest.

Thanks! This site looks like a great resource.

Matthias

RE: Centerless sphere grinding?

Search the web for "Sphere Machines."  These are used to make spheres out of rocks.  I believe that they are basically counter rotating cones with an abrasive slurry.  The rock is initially sawed to a polygon shape.

RE: Centerless sphere grinding?

yes it is possible to grind a esphere on acenterless grinder.
here I my city there is a shop that make such machine to do pool balls.
It is made with grinding wheel grooved in sphere radious but with a great angle in the axle , and a little ball instead the blade .
the piece is made by plongee .

Pardal

RE: Centerless sphere grinding?

I would ask Landis in Hebron Ky. or Royal Master.  I tried to use this process a few months ago and found very little help.   My parts were better done on a chucking grinder because they had a stud.  The ball bearings are done on double disk grinders, Landis Gardner , Waynesboro Pa..
Bob Setree 502-452-9851

Robert Setree
www.advanced-grinding.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