Inner-edge burrs left by saw-cutting create mechanical interference during secondary operations like mandrel bending or slip-fit assembly. When an internal burr remains on a structural tube, it contacts internal tooling components as the material advances, causing localized galling and premature wear on the mandrel balls. The Yalın series boru çapak alma makineleri removes these irregular flash rings from both internal and external perimeters simultaneously before the tube reaches the forming department.
Mechanics of Inner-Flash Generation and Tooling Scratches
Saw blades displace metal rather than cutting cleanly through the entire wall thickness, pushing excess material inward to form a sharp internal lip. As the tube loads over a mandrel on a CNC tube bender like the Griffin, this jagged inner lip repeatedly impacts the leading edge of the mandrel body. This intermittent shock loading accelerates fatigue failure on the linkage pins and strips surface coatings from hardened tool steel. Removing the inner flash to a uniform bevel eliminates the point-contact friction that generates internal scoring.
Tooling Engagement and Depth Control on the Yalın Series
Consistent deburring requires steady axial feed and precise cutter head alignment relative to the tube wall thickness. If the internal tool engages too aggressively, it cuts into the parent wall and reduces load-bearing cross-section near the end of the tube. If the feed force is too low, the residual burr folds over instead of shearing off cleanly. Operators must verify that the cutter geometry matches the specific wall tolerance of the incoming batch rather than relying on a universal setting across different material grades.
Surface Finish Verification Prior to Upstream Processing
Inspecting processed tube ends involves checking the transition zone between the inner diameter and the newly faced edge for sharp residual slivers. A proper pass leaves a smooth, burr-free chamfer that allows the tube to slide freely over close-tolerance mandrels and collets without catching. Establishing this baseline cleaning step prevents unexpected downtime during high-volume production runs across automated workcells.
Data Required for Process Integration
To evaluate cycle times and tooling configurations for your specific application, send us your material specification, outer diameter, wall thickness, and required production volume.
Frequently asked questions
Why do internal burrs cause damage during rotary draw bending?
Sharp internal flash catches on the leading edges of mandrel balls, creating high impact forces and localized scoring that ruins internal tooling.
How does the Yalın deburring machine handle varying wall thicknesses?
Operators adjust the mechanical feed stop and cutter head position to match specific wall tolerances, ensuring complete burr removal without cutting into the parent tube wall.