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Hi All,
In metrology, we are working on small plastic parts, and sometimes it needs cutting to reach the wanted dimension, right now we are using a cutting disc, it's dangerous and it may deform the parts, is there any advanced tools, that can guaranty the security, and preserve parts from deformation.
Thank you for your help.

RE: Metrology

How often is "sometimes?" I have issue with metrology doing rework for production, in addition to the simple fact that yield should be designed-in, not reworked in. If the manufacturing tolerances are bad, the design should accommodate that, or find new manufacturing process.

TTFN (ta ta for now)
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RE: Metrology

The dimension is there for a functional reason (I hope) therefore create a rig that measures that function rather than trying to measure something directly.

For example suppose you had an oil lubrication channel in a casting. You could cut castings open and measure the dimension of the channel. or you could put a certain flow rate of fluid through it and measure the pressure loss.


Greg Locock

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RE: Metrology

I have on occasion had to cut open (and destroy) assemblies in order to verify what was potted in, or even just to verify a dimension that no gage could reach.

I found that an ordinary hand hacksaw, fitted with a Grit-Edge blade, can do a nice job of basically making a metallurgical section. Fine grit round section blades can even section a potted optical assembly right through the lens.

Mike Halloran
Corinth, NY, USA

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