Fundamentally, you need precision machines. If your machine tolerance is +/- 0.05mm, but you try to make some parts with +/-0.01mm tolerance, that’s not going to happen for sure. An ant won’t be able to lift an elephant.
Once you have precision machines ready, does that mean you can start to make precision parts? Not yet. Then, you need to invest good tool holder and tools. A good tool holder that you can install tools precisely. Normally, we will keep the concentricity around +/- 0.005mm.
With all these equipment and very experienced engineers who can sort out the best way to make a prototype parts and production including set up the proper fixture, optimize the tool path, avoid deformation, etc. To ensure all parts are done right in one go.
The on-site inspection system also helps a lot during manufacturing. We know exactly if the actual parts on the machine are good or not. And the system will adjust the tool path base the inspection result. If we found problem on half way, and it is not possible to fix, then we won’t invest time to continue further steps.
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