The vibrating knife

The vibrating knife, also known as an oscillating blade, is a cutting tool used in many industrial sectors thanks to its high precision and ability to process flexible or multi-layer materials.

The vibrating knife, also known as an oscillating blade, is a cutting tool used in many industrial sectors thanks to its high precision and ability to process flexible or multi-layer materials. It operates using a rapid oscillating motion, typically between 8,000 and 20,000 oscillations per minute. This linear movement allows for clean cutting without heating, thus avoiding any deformation or alteration of the material.

At KMSYSTEM, we have chosen to equip our TRCs with a vibrating head because it is designed to accommodate different blade shapes, such as straight or curved blades, making it highly versatile. Tool changes are quick and easy, reducing production downtime. The blades can achieve a useful stroke of up to 110 mm, allowing them to cut thin materials as well as thick or stacked materials.

The vibrating knife is compatible with a wide variety of materials, giving our CNC machines great versatility. It can cut rubber, foams of different densities, technical textiles, multi-layer fabrics, natural or synthetic leather, PVC, packaging, cardboard, carpets, and composite materials. This high compatibility makes it important in sectors such as automotive, aerospace, leather goods, textiles, furniture, and packaging.

Thanks to the use of high-quality servomotors and linear guides, machines equipped with vibrating heads can achieve repeatability of around 0.1 millimeters. In addition, the cutting speed can reach several meters per second, making it a much faster solution than manual or semi-automatic cutting. This precision is further enhanced by the integration of CCD vision systems, laser sensors for positioning, and nesting optimization software, which ensure optimal management of raw materials.

Unlike laser or water jet cutting technologies, the vibrating knife works cold. There is therefore no heat or moisture release, which is essential for preserving the integrity of sensitive materials such as technical foams, fine leathers, or delicate textiles. In addition to preserving the properties of the materials, this cutting method also reduces blade wear, giving them a significantly longer service life, up to ten times longer than that of conventional rotary blades.

We have integrated these tools into our digital cutting machines, and some machines are equipped with sacrificial mats and vacuum suction systems to hold the parts in place.