Technologies

Covering the whole range of washers for bolted assemblies, our compound die-cutting tools produce washers that are perfectly flat and perfectly concentric at very high throughput.

Guaranteeing perfect geometric control of inside and outside diameters and surface condition, this high-precision process is used for calibrating, shaping, marking and stamping.

This technology is an economic alternative avoiding the need for surface and/or diameter grinding, fine cutting and specific machining operations.

Transfer technology is applied for the manufacture of more complex items, again at high throughput.
The principle consists in producing an item by performing successive operations continuously with the possibility of combining different technologies.The Gris Group’s strength lies in its experience in controlling
material movements during high-speed striking operations.

Progressive stamping is one of the best metalworking method that can encompass punching, coining, bending and several other ways of modifying strip band material, combined with an automatic feeding system.

The feeding system pushes a strip of metal (as it unrolls from a coil) through all of the stations of a progressive stamping die. Each station performs one or more operations until a finished part is made. The final station is a cutoff operation, which separates the finished part from the carrying web.