Accuracy Diagnosis - External Factors

External Factors that can affect accuracy on Stuga Machines

Accuracy Swarf_Clearance_in_Night_Vents_ProfileA.jpg

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

en none 0

Draft