Featured product - Horn

The Supermini tool system can be adapted for numerous machining operations – from boring, profile turning, and internal grooving to threading, chamfering, face grooving, drilling, and slot broaching. The solid carbide inserts are used for boring from a diameter of 0.2mm to around 10mm. The carbide blanks, developed for the tool as a teardrop shape, enable large, precise contact surfaces in the tool holder, resulting in greater overall system rigidity. Additionally, the teardrop shape prevents the insert from twisting, leading to consistently precise positioning of the center height of the tool. With long tool overhangs, it reduces deflection and minimizes vibration during turning. Depending on the application and the diameter to be machined, Horn offers the inserts in three different sizes (types 105, 109, and 110) and different blank types. All types allow internal coolant supply directly to the cutting zone.

Chipping problems solved

One of the biggest challenges in internal machining is the generation of long chips. Depending on the material, boring often leads to stringers wrapping around the tool, clogged holes or, in the worst case, tool breakage. This is where chip breaking geometry helps guide and shape the chip, causing it to break. Previously, specially lasered or ground chip-breaking geometries were used for this purpose, but this increased insert cost. With Supermini type 105, Horn has developed a universal boring tool with sintered chip-breaking geometry and high process reliability. The cutting edge geometry extends far into the corner radius of the insert ensuring chip control even with small infeed settings.

In addition to the geometry, Horn optimizes the carbide blanks of the inserts to have greater rigidity and an even more stable cutting edge area. Horn offers the inserts as standard in three lengths (15.0mm, 20.0mm and 25.0mm) and in carbide grades TH35 and IG35. The corner radius is 0.2mm. The tool is suitable for use from a bore diameter of 6mm.

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Horn USA Inc.
https://www.horn-group.com/us/