Bras de suspension

Suspension arms are an essential component of individual wheel suspensions in cars and are responsible for wheel guidance. They absorb the lateral forces between the wheel and the vehicle body. Depending on the axle concept, there are many geometric solutions. Suspension arms must withstand high wheel loads and should be resistant to corrosion and very strong. They play a key role in driving mechanics and make a major contribution to safety and comfort.
Suspension arm for cars

Highlight machining

  1. Fine machining of the spherical bore
  2. Bearing bore

Features and machining requirements
  • Cast iron, aluminium or steel
  • High demand on quality
  • High quantities
  • Defined surfaces for bores (Rz > 30 µm) where rubber bearings are pressed into
  • High process reliability, dimensional accuracy and contour accuracy

  • Long chipping due to wrought alloy and forged/ heat treated
  • Multi-spindle machining

1. Fine machining of the spherical bore

Chassis_and_brakes_PKD_Aufbohrwerkzeug.jpg

PCD boring tool

  • Tight tolerance and contour accuracy
  • High demands on surface finish

2. Bearing bore

Chassis_and_brakes_Lagerbohrung.jpg

PCD milling tool

  • Pre-machining and fine machining with one tool
  • Special face-side cutting edge geometry for helical pre-machining of the bore
  • Peripheral cutting edge with special cutting edge geometry for fine machining of a defined surface

Or:

PCD bore milling tool

  • Cost-effective pre-drilling using index?able insert technology
  • Special cutting edge geometry on peripheral cutting edge for fine machining of a defined surface