The Precision of Robot Cutting the Small Holes ?

Robot Fiber Laser Cutting Machine.

The precision of robotic systems for cutting small circular holes in metal tubes is generally high, 

often achieving tolerances within ±0.1–0.2 mm when using advanced tools like fiber lasers 

or high-precision mechanical cutting heads. Robotic systems excel in repeatability 

(typically ±0.05–0.1 mm) due to their programmed motion control, making them ideal for complex geometries and consistent batch production.

Compared to plasma cutting:  

1. Precision:  

 - Robotic systems (e.g., laser/waterjet): ±0.1–0.2 mm, with minimal heat-affected zones (HAZ).  

 - Plasma cutting: ±0.5–2.0 mm, depending on torch quality and material thickness. Plasma arcs cause wider kerfs and larger HAZ, reducing edge quality.  

2. Edge quality:  

   - Robotic laser/waterjet cuts produce smooth, burr-free edges, often eliminating post-processing.  

   - Plasma cutting leaves dross (slag) and rougher edges, requiring deburring or grinding.  

3. Material limitations:  

   - Plasma works better on thick materials (e.g., >6 mm steel) but struggles with thin-walled tubes.  

   - Robotic lasers handle thin to medium thicknesses (0.5–20 mm) with superior precision.  

4. Speed vs. accuracy trade-off:  

   - Plasma is faster for thick metals but sacrifices precision.  

   - Robotic lasers prioritize accuracy, especially for small features like holes.  

Summary: 

Robotic systems (laser/waterjet) outperform plasma in precision and edge quality for small holes in metal tubes, but plasma remains cost-effective for thicker materials where precision is less critical.