Crankshaft

The basic crankshaft design is determined by the number of cylinders and engine layout. To reduce emissions, the mostly forged steel shafts must be increasingly optimised for weight. This requires additional machining steps for already complex components. At the same time, rising combustion pressures lead to higher bending and torsional loads – and therefore stricter quality requirements for dimensional accuracy, strength and surface quality.
Kurbelwelle mit Flansch‑ und Zapfenflächen, Ölbohrungen, zentraler Erleichterungsbohrung und Stirnlagerbohrung

Kernmerkmale

  1. Flansch- und Zapfenfläche
  2. Ölbohrung
  3. Zentrale Erleichterungsbohrung
  4. Stirnlagerbohrung

Prozessbedingungen
  • Mehrfaches Anbohren
  • Bohrungstiefe bis zu 800 mm
  • Abgestimmte Prozessparameter zum zeitgleichen Bohren und Entgraten
  • Koaxialität
  • Wechselhafte Zerspanungsbedingungen aufgrund von Gussschwankungen

1. Flansch- und Zapfenfläche 

High‑performance face milling cutter NeoMill‑16‑Face for machining flange and spigot faces

NeoMill-16-Face

  • Maximale Zähneanzahl und Wendeschneidplatten mit 16 einsetzbaren Schneidkannten für geringe Kosten pro Bauteil.

2. Oil bore

Crankshaft with journal surfaces, oil bores, lightening bore and front bearing bore

MEGA-Deep-Drill-Steel

  • Optimised geography and HiPIMS coating for process-reliable deep drilling with high feeds.

3. Central relief bore

Tool for easy deburring and chamfering of drilled holes

TTD bore deburring tool
 
  • Replaceable head system with TTS connection and replaceable chamfer insert for forward and/or backward chamfering

4. Face bearing bore

Tools for roughing and finishing of holes, diameters and chamfers

1. Pre-machining
WP drill

  • Short, stable tool with multiple process steps integrated in one tool (roughing, boring, chamfering).
     

2. Finishing
High-performance reamer

  • Multi-blade plug-and-play reame for finishing diameter and chamfer.