NEW EMAG VLC450 DG

VLC 450 DG - Machine for grinding hard coating of brake discs

The further development and optimization of brake system components is an ongoing process in the automotive industry, which has been given a new dynamic by the entry into force of the EURO 7 standard.

A key component here is the brake disk, whose effectiveness and service life depend largely on the surface treatment in addition to the material properties. In this context, hard machining technologies, especially grinding, play a central role. The aim is to apply a coating to the brake disc that shows as little material loss as possible during the braking process. This makes machining a major challenge, as a lot of material needs to be removed in as short a time as possible with minimal tool wear.

- Adapting to layer diversity: challenges and solutions
Specific machining strategies are required depending on the coating material. Multi-layer coatings place high demands on the grinding process. Their machining behavior is similar to the carbide machining known from tool grinding. This type of coating requires low cutting speeds, but all the higher torque. Before machining, these coatings have a roughness of up to 100 micrometers. After the grinding process, both the matrix and the carbides are machined. The machining behavior is due to the dual properties of the coatings: brittle-hard carbides on the one hand and a ductile matrix on the other.

- The machine concept
The VLC 450 DG is designed for rigidity and durability in order to meet the high demands of batch production. Outside the work area, the machine shuttle forms the interfaces to downstream automation. The machine concept is based on decades of experience in the construction of vertical turning and grinding machines. The intelligent sensory equipment enables adaptive process control.

Large work area, vertical design
- Minimizes the accumulation of sanding residue on the workpiece and in the machine
- Excellent accessibility for set-up and maintenance work
- Direct removal of grinding sludge thanks to vertical spindle arrangement