×
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

Push/Pull Core Tester Part Help

Push/Pull Core Tester Part Help

Push/Pull Core Tester Part Help

(OP)
Hi All,

I am a designer that has just started working in the automotive industry and i do alot of jig, fixtures and core building machines for radiators on a range of car makes. I am current designing a push-pull Core leak tester for the new BMW X5.

I have recieved a drawing from the customer of a G.A (DXF File) With no detail and i have to draw it up in 3D using Solidworks, the problem i have is identifying a catalogue part and as i am new to machine design i was wonder if someone could pleaseee help me.

Attached is a pdf of the original drawing and a note to the part that i think is a linear bearing from DME?????  

RE: Push/Pull Core Tester Part Help

Looks like a sleeve from Dme yes? Whats the problem? They do a wide range of sleeves and bushings for mould tool building.

Also looks like, or should/could be a 'recirculating ball linear bearing'.

I have no idea of the tolerances you need, so check it out, they vary.
Cost per bearing also varies dramatically to cater for said tolerance.

Here is the DME catalogue

http://www.dme.net/wwwdme/tech/DME_Metric_Components.pdf

Brian.

 

RE: Push/Pull Core Tester Part Help

Pages 24/25 in the above link.

Brian,

RE: Push/Pull Core Tester Part Help

(OP)
Hi Brian,

Thankyou for you help, the problem is am trying to figure out what the part is please see attached pdf of actualy part i dont know tolerances either i just measured the part from a dxf file and re-drawn it up is s/works.

I am only saying its a linear bearing cause thats what i have been told have no idea what it is!

Thanks,

Craig

RE: Push/Pull Core Tester Part Help

Since you need just one threaded hole at the end for locating consider the dowels on page 30.5. But, it seems nothing in the catalogue  matches your latest pdf drawing. This means three things, the original draftsman has a catalogue you dont, he has left the choice of pin, or manufacture up to you, or DME carry items not listed that he has used before.

If its up to you to sort this out, then make a decision and go with it. If you dont have the final call, email the guy and ask him where  he wants you to source assembly, and if you are allowed to either machine the pin yourself(It will have to be ground) Or if you can buy ground stock, and preform secondary machining on it, mainly, drilling/tapping the fixture hole in one end.

Brian,

RE: Push/Pull Core Tester Part Help

It looks like some sort of shaft as it has diameter call outs.
And is missing the diameters for the steps on the RH side, though looks the same as the ones on the LH side. There is no callout for the size of chamfers either. It could be some sort of link or idler shaft since there are no keyways. You need to know what suppost to mate to it before you can establish the tolerances.  

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