Ultrasound Cutting CNC Machines

Product information

Alongside the Thermoforming Machines Type T10 and Ts1, GEISS AG also offer CNC Post Processing Centres. These can be further equipped with additional options to suit the requirements of your products, if required.
Using the parametric design, a machine of almost any size can be supplied.
The machines essentially consist of rigid, welded machine frame with a fixed table. The three main axes named as X, Y and Z relate to the perpendicular axes of a cartesian coordinate system.
The trimming spindle is held in an orthogonal or gimble head and is fitted to the machine rotationally on the vertical z axis. The pivoting b axis, the rotating c axis and the centre axis of the spindle meet at one point. During trimming the cutter tip moves continuously on a spherical surface around this cross point.

Our CNC Trimming Machine are:
• CE Certified
• Adaptable to meet the Specific Requirements of the Product in Terms of Quality, Handling, Cycle Times and much more by a Technically up to date Additional Options List

Typical options are:
• Trimming Spindles for a Variety of Application
• Additional Processing Options such as Ultrasound and Cold Knife (if no Ultrasound is required) and Laser Cutting
• Tool Changer
• Various Machine Tables such as Shuttle, Alternating and Rotary
• Machine Enclosures
• Swarf and Dust Extraction Systems
• Vacuum Equipment
• Measuring Systems
• Software Options, Data Acquisition and Logging
• Additional Services and much more

Areas of Application:
• Thermoplastics
• Glass and Carbon Fibre Reinforced Thermosets
• Moulded Parts made from GMT and SMC
• Moulded Parts made from Foam, Leather and a Carrier Part in Sandwich Form
• Wood Panelling
• Plywood Mouldings
• Lightweight Honeycomb Materials
• Blow Mouldings
• Model Making Foam for Tools and Model Making

We are happy to discuss your requirements in a person and look forward to hearing from you.

Ultrasound Cutting CNC Machines

Instead of a trimming spindle, an ultrasound cutting unit with an additional NC axis can be selected from the options list.  This option cuts materials without noise, materials too difficult or not suitable for spindle trimming. 

The piezoelectric effect is todays mainly used in technology to generate ultrasound:

Ultrasound is used to longitudinally oscillate a cutting blade at a frequency of 20 kHz.  This oscillating movement greatly reduces the cutting force (compared to Cold Knife cutting).

Applications:

• Trimming of Thin Walled Thermoformed Products
• Fully Automatic Cutting of PVC Flooring
• Cutting of Ski Skins
• Cutting of Rubber Parts, Carpets and Non-Woven/Fleece Materials
• Scoring of Airbag Weakening Lines in Door and Instrument Panels
• Cutting of Honeycomb Materials

 Sound frequencies above the hearing limit, approximately 20 kHz, are referred to as ultrasound.   Frequencies applied in Ultrasound cutting range between 20 - 40 kHz.

In todays’ technology the piezoelectric effect is main source of generating Ultrasound.

High voltage produced by a generator is applied to layered quartz crystal discs via a coaxial cable.  The discs vibrate in resonance with the AC Voltage applied, resulting in mechanical vibration generating amplitudes of approximately 6-8 μm.

The unit that coverts the electrical vibration into a mechanical vibration is called a converter.

The amplitude must be increased for cutting.  The transformation pieces which increase the amplitudes of the mechanical vibration to a few of a tenth millimetres are called sonotrodes.

In most cases the very precise sonotrodes are made of titanium and the cutting blade is fixed to the end of the sonotrode.  The carbide knife is either clamped in a slot on the sonotrode or soldered into a screwable pin.