Blind, Threaded Hole - How can I Eliminate Chips?

[Connie]

Hi Everyone It's Been A Long Time But We Have Been Very Busy.

I Have A Question (not Sure Where To Post It Though) About A Part That Has Been Driving Us Nuts For Quite Some Time, So Any Help Will Be Greatly Appretiated!!!!

Here It Is:

We Make A Few Parts That Have A Blind Threaded Hole, Our Customer Tells Us That They Cannot Have Any Debris Or Chips In The Holes, Now We Have Tried Everything We Can Possibly Think Of To Eliminate This Issue, We Used Chip Breaking Tools Which Have Helped Some To Eliminate The Larger Chips, We Have Put Parts Immediatly In Solvent To Release Any Oils That May Be Making The Chips Hang In There, We Have Tried Vibration Washing None Of Which Eliminates This 100% Which Is What The Customer Wants.

These Are Run On A Five Spindle Davenport Screw Machine.

If Anyone Else Runs This Type Of Part And Has Been Successful At Eliminating The Chips Please Let Me Know How You Do It!!!

Thannk-you!!!!
Connie

Also Where Is The Spell Check???

 

[Mike S.]

Maybe high pressure air or water sprayed into the hole???

By the way -- are you stuck on title case by accident?

 

[mshell]

Connie,

I would suggest that you conduct a root cause analysis of the problem, determine what is causing the nonconformance, identify potential solutions and implement the most effective solution.

 

[Connie]

No I just always have my computer on caps lock because I do all my inspections sheets in caps because they are almost all dimensions with the exception of a few commands. Sorry!!

Getting back to the problem at hand, we have been using the air pressure but what I want to get away from is handling each part individually. We run millions of these.

And I really have not tried to do a root analysis, since we know how the chips are getting there would it really help?

Please keep thinking any suggestions will be looked into.

Thanks for your fast responses!!!

 

[mshell]

Is there something that can be done to eliminate the root cause without compromising the process?

 

[Mike S.]

Are the holes bored? If so, maybe high vacuum applied while boring?

Must it be a blind hole?

 

[Connie]

That is what I'm am trying to find out if there is any type of wonder equipment or tooling or even a new type of washing equipment that has worked sucessfully for someone else.

 

[Connie]

We have just spoken to another machinist (lots of experience) he suggested we hook a high pressure air hose inside the machine to shoot a burst of air into the hole immediatly befor it drops into the catch container.
I'll let you know how/if it works.

Keep the thoughts coming this may not work.

Appriciate all your inputs!!!

 

[mshell]

I have to know what is causing the debris to build up? I am just curious..

 

[Connie]

The Debris is caused by the threading tool I guess I forgot to mention that it is a threaded hole.