Cutting contour deviation
The deviation between the CAD contour and the actual cut line due to machine movements and flexibility. It causes fit problems in assembly.
Physicochemical Mechanism of Action
Cut contour deviation is caused by dynamic axis accelerations and machine elasticity during cutting. These movements can slightly alter the cut line contour, deviating from the originally programmed CAD contour.
Metallurgical Relevance & Welding Risks
Deviation can cause fit-up issues in assembly. Inconsistent cut contours can lead to stresses and cracks within components, affecting mechanical stability. Additionally, it can result in uneven weld gaps and irregular heat distribution during welding, influencing the weld's microstructure and hardness.
Workshop Practice & Action Items
To minimize cut contour deviation, take the following measures:
1. Use high-precision machines with low dynamics and high stability mass.
2. Optimize cutting speed and acceleration in CNC programming to reduce unwanted movements.
3. Perform regular calibration and maintenance of machines to minimize elasticity and deviations.