touch off

17:02 Feb 8, 2017
This question was closed without grading. Reason: Answer found elsewhere

English language (monolingual) [PRO]
Tech/Engineering - Metrology
English term or phrase: touch off
This is a squareness test on some components of a machining center.

Mount an indicator on the table and then touch off the taper in the spindle adapter.
...
Make sure the cylinder is on the center of the table by mounting an indicator on the ram and touching off the side of the cylinder near the bottom then rotating the table.

The indicator looks something like this:
https://www.mahr.com/en/Services/Production-metrology/Produc...

The table is the usual table of machining centers (in this case, it is a vertical turning center).

This cylinder is a cylinder square:
http://precisionmachinetips.blogspot.com.br/2015/09/how-to-u...

The ram is a sliding ram (in the Z axis, in this case).

How do you interpret "touch off" in this case?

Thanks for your attention!
Matheus Chaud
Brazil
Local time: 19:02


SUMMARY OF ALL EXPLANATIONS PROVIDED
5Move or disturb by handling
Morad Seif


Discussion entries: 5





  

Answers


18 mins   confidence: Answerer confidence 5/5
Move or disturb by handling


Explanation:
///

Morad Seif
Iran
Local time: 02:32
Native speaker of: Persian (Farsi)

Peer comments on this answer (and responses from the answerer)
neutral  Tony M: I don't believe that would make a lot of sense in the context as given here.
34 mins
  -> Anyway thanks
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