Trumpet profile
The trumpet profile describes a typical rounding geometry that is created when rounding edges with deburring discs and deburring blocks.
A characteristic feature is a wide, softly tapered transition to the surface, while the rounding directly at the workpiece edge is comparatively less pronounced.
The creation of a Trumpet profile
The trumpet profile is created using a pressing grinding process. A layer of flexible abrasive flaps lies flat against the sheet metal surface. As the grinding wheel is fed, the flaps are pressed elastically into the edge. This results in a more even distribution of material removal compared to a pulling grinding process. The resulting cross-sectional image shows a rounded shape reminiscent of a trumpet, hence the name "trumpet profile".
Factors influencing the trumpet profile
- tool assembly
- infeed
- contact pressure
- speed
- feed rate
Effects on edge quality
A reproducible Trumpet profile creates a smooth transition between surface and edge. The more surface-oriented material removal results in a softly tapered radius geometry with a homogeneous edge appearance.
Potential impacts on quality
- smooth transition between surface and edge
- softly tapered edge rounding
- reproducible edge geometry
- homogeneous edge appearance
- controlled material removal along the edge
Relationship to edge rounding
In the edge rounding process step, deburring discs and deburring blocks are used to remove primary and secondary burrs and to create a reproducible radius-like transition between surface and edge.
The pressing action typically results in a Trumpet profile with a wide transition to the surface.
Difference between Trumpet profile and Waterfall profile
Trumpet profiles and Waterfall profiles differ in the underlying principle of tool machining.
Technical differences
- Waterfall profile: pulling principle along the edge contour
- Trumpet profile: pressing action principle with flat lamellar surface
- Waterfall profile: contour-oriented rounding along the edge
- Trumpet profile: wide transition to the surface
FAQ
What is a Trumpet profile?
A Trumpet profile is a rounding geometry with a wide transition to the surface, created by a pressing machining principle.
How is a Trumpet profile created?
A Trumpet profile is created when rounding edges with deburring discs or deburring blocks, when flexible abrasive flaps lie flat on the surface and are pressed into the edge.