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Posted: Wed Feb 05, 2014 11:47 am
by unstable load
In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
Posted: Wed Feb 05, 2014 1:16 pm
by DaveEFI
unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
Not quite sure how you'd 'calibrate' a crimper. The jaws simply meet at full travel on the sort I'm talking about. I also have a wire stripper with fixed cable sizes which covers all the common car ones with no chance of conductor damage. If used correctly.
Posted: Wed Feb 05, 2014 2:56 pm
by kiwicar
unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
yup same for military spec wiring.
best regards
Mike
Posted: Wed Feb 05, 2014 11:02 pm
by stevieturbo
DaveEFI wrote:unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
Not quite sure how you'd 'calibrate' a crimper. The jaws simply meet at full travel on the sort I'm talking about. I also have a wire stripper with fixed cable sizes which covers all the common car ones with no chance of conductor damage. If used correctly.
Maybe measure actual crimp force ? or more importantly, test the crimp it has just made ?
This type of tool covers a lot of common crimps and wont break the bank.
http://www.ebay.co.uk/itm/Crimping-Hand ... 3389d8c5e2
Although quality does vary. I bought one cheap set off a seller ages ago and the tool was very good quality.
A few days later I bought a similar product from another seller, with a case etc. It was cheaper though. The dies were nowhere near the same quality as the first tool I bought
Even still, for all it cost it was still worth it ( too damn lazy to change the dies lol )
Posted: Thu Feb 06, 2014 5:13 am
by unstable load
Basically, the tool has different removable heads for the different sized and configured pins and each head is crimped on a set number of pins and they are tested for conformity with published specifications.
It makes tooling up for a company hugely expensive because they effectively need 2 of each special tool to cover for calibration and some of the stuff like pitot-static testers or altimeter transponder testers can run into tens of thousands of dollars depending on complexity. Then, factor in the costs of shipping the stuff around the countryside and the setting up of a laboratory or paying someone else to do it and the costs quickly add up.