Five-axis Efficient Machining Of Automobile Turbine Housing
Oct 27, 2025| Case introduction
An automobile supplier uses a five-axis machining center to achieve mass production of turbine housings, solving the accuracy and efficiency problems caused by multi-process decentralized machining, increasing the yield to 99% and shortening the delivery cycle by 40%.
Case details
1. Part features
Material: Vermicular graphite cast iron
Key requirements: φ58±0.01mm bearing hole, 6 special-shaped flow channels (surface roughness Ra3.2)
2. Original process pain points
4 equipments were used for processing in different steps, with cumulative error (±0.05mm)
The flow channel area needs to be cleaned by electric spark, and it takes 35 minutes for one piece
3. Solution
Equipment: five-axis linkage, torque motor rotary table
Process innovation:
Rough machining: high-torque face milling cutter (φ50mm, layered cutting)
Fine machining: modular corn milling cutter (φ10mm, variable speed cutting to suppress chatter marks)
Online detection: automatic compensation of workpiece coordinate system
Fixture: hydraulic expansion mandrel to locate inner hole, lateral pressure plate to avoid processing area