Tie Bar Strain Variation

[mjh368]

I am looking for a reference on allowable strain on a tie bar and allowable variation between all four bars. I would not think it could be more than a couple .001" but is there a reference. I looked in my machine manual and strain gauge sites, no help. The machine is a nissei 360.

 

[dwightdixon]

I would call the technical folks at Niessi. They know their machines better than anybody.

 

[mauriciob]

mjh368

This is an interesting question. If you find the answer from a source other than this forum, can you please post it?

Mauricio Benavides
Injecnet Solution Inc

http://www.injecneering.com

 

[mjh368]

hey mauricio,

I called Nissei like Dwight suggested. They faxed me spreadsheet that looked at the issue a little differently than I was. I will scan it tommorow and post it in the plastics.com injeciton forum.

 

[patprimmer]

Why not post it here as this is where you were given the very basic tip of contact the manufacturer.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[dwightdixon]

The manufacturere recommended set up procedures for setting the plattens parallel using height guages, but nothing about monitoring them by using strain gages or other means. I guess the original requester used Plastics.com because it was easier to upload the diagram there. Actually it looks pretty easy here but I have never done it.

 

[mjh368]

sorry pat

I recognized the poster and i had never posted an attachment here.