DRAFT ON SLIDE

[cgelang]

Hello everybody. Another query.

Is the slide really nescessary to have drafts, I have feature
that fitting is critical so I don't plan to give a draft,
is this possible. please see attached.

Thanks for your inputs.

Cgelang

 

[MikeHalloran]

It's not clear that the part needs a slide, either.

You appear to be trying to design the mold.
DON'T DO THAT.

Design the part you need, make a proper drawing of the part, with dimensions and tolerances, and talk to your molder about it. Annotate the part drawing to show where draft is acceptable, and where it is not, but don't assume that you know how the mold will be constructed, or how it will separate.

If the molder needs changes to your part drawing, he will ask for them.


Mike Halloran
Pembroke Pines, FL, USA

 

[cgelang]

Thanks Mike, the attachment is just the replica of the actual part I'm making, there are more features on outside and inside, die draw is already fix to be along the two arrows, up/down, and 4 side cores. The indicated arrow with slide is really slide action. Just new in molding, just want to know if that one is possible without drafts.
Thank you so much for the input. It helps a lot.

Regards,
cgelang.

 

[MikeHalloran]

In that case, yes, you can probably pull the slide, since the geometry is simple-ish.

If the illustration you provided is anywhere near to scale, the pins must be 10mm diameter, and the wall of the 'box' is at least 15mm thick. Which suggests that the walls will shrink away from the slide pins, so the pins don't even need a super nice finish. And you'll have a very long cycle time, or you'll have to fixture the parts as they cool to prevent distortion.



Mike Halloran
Pembroke Pines, FL, USA

 

[MikeHalloran]

OR, if the illustration is not close to scale, I could be completely wrong.

The problem with presenting grossly simplified geometry along with your question is that the simplification may distort the answer.



Mike Halloran
Pembroke Pines, FL, USA

 

[cgelang]

Thanks Mike, I bear that in mind, and double check the wall thickness on that area to achieve the desired result.

The ideas you share make a difference and move me forward on my design.

Many thanks.

Regards,
Cgelang

 

[patprimmer]

I agree completely with all Mike says.

I would add that to increase the chance of withdrawing the side cores succesfully, polishing in line of draw will help.

Regards
Pat
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