Accuracy Diagnosis - External Factors

Auteur avatarGareth Green | Dernière modification 11/08/2020 par Gareth Green en cours de rédaction

External Factors that can affect accuracy on Stuga Machines

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There are many external factors that can affect the accuracy of Stuga machines. it is incredibly important that these factors are all eliminated as potential root causes.

If you do suspect that one of these factors is potentially a problem, it is equally important to be able to prove and demonstrate your suspicions clearly.

External Factor Description Link to Page Affected Machines
Temperature change Profiles expand around 0.5-1.0mm per 10 degree in temperature change

If the bar temperature changes between machining and sawing, the bar expands and accuracy is compromised

Proving temperature change variance Flowlines

ZX3 / 4/ 5

Profile Width Depth of front V and Y notches depends on the profile width

Arrow head position depends on profile width (Autoflow and Microline only)

All
Innaccurate welders Finished Y notch depth depends heavily on reverse butt burn-off
Incorrect link data (Y notch codes) Machine will cut to the depth that it is told
Profile symmetry Test T Transom Symmetry
Wet profile
Profile left on TT overnight
Bowed profile
Twisted profile
Parallelism of profile faces
Cleanliness
Blades / tooling
Tolerances (+/- 0.5mm)
Customer expectation
Blade buckled / missing teeth
Incorrect pos test fiddling
Proper operator trained
Laser lens
Rear of saw - clean
Blunt saw blade
Skipping the laser


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