Vacuum Clamping Technology

Witte Geratebau Hannover Berlin Horst Witte Geratebau, founded 1969, manufactu- res not only their own range of products but also ultra precision products for aerospace, medical Among a broad range our emphasis lies on deve- lopment and manufacture of advanced workpiece clamping systems for universal application. Witte has taken up the lead in the branches of flexible fixturing" and „vacuum technology" as a result of many patented solutions. The high quality of all Witte products and internal processes is verified according to DIN EN ISO9001/2000 as well as QSF-A for suppliers to aerospace industry....

Customized precision workholding xtures Vacuum Supply from page from page from page from page ICEVICETM Freeze clamp technology from page from page from page from page from page Pumps, Units, Compressors, Accessories Witte VAC-MAT TM Pumps, Units, Compressors, Accessories Vacuum Chucks Grid, Sintermetal, Vacudisc-ceramic, Metapor ©, Slot, Rubber adapter mat, Covering foil, Perforated-grid Application, Sets, Accessories Circular Chucks Grid, Sintermetal Liquid Separators Conventional, Automatic Accessories Safety appliances, Seal, Grease, Pressure switch, Manifold distributors, Rotary joints,...

VACUUM CLAMPING SYSTEMS Clamping system 540 mm x 900 mm x 5400 mm (vacuum + hydraulic) for contour machining stainless steel blades Vacuum Clamping Systems VACUUM CLAMPING SYSTEMS GIVE YOU A TECHNOLOGICAL ADVANTAGE. USE YOUR TIME MORE PROFITABLY! Possibilities: • reduce clamping times • use a universal clamping system for different workpieces • clamp non-magnetic materials • machine without oscillation or vibration • only one clamping procedure for 5 side machining • clamp extremely thin workpieces and foils • mill through workpieces Vacuum-clamping technology can be used in nearly all machining...

VACUUM CLAMPING SYSTEMS Setting up a vacuum system Vacuum supply: A modular vacuum unit with integrated liquid separator, storage tank and pressure control. Other pumps/units are available. Vacuum distributor, connection unit or safety appliance: Distribution of operating vacuum to the chucks. Gauges, choice of manual or magnetic valves and pressure controls for watching over operating vacuum level. All these variations are available. Vacuum chucks: Chucks to accomodate your requirements and clamping operations. Photo shows modular VAC-MATTM chucks for 5 side machining

6 VACUUM CLAMPING SYSTEMS Clamping with vacuum Slot chuck with perforated rubber adapter mat Slot chuck with perforated rubber adapter mat Grid chuck with 0-shaped seal Grid chuck with 0-shaped seal Witte VAC-MAT™ Witte VAC-MAT™

VACUUM CLAMPING SYSTEMS Clamping with vacuum Workpieces with small surfaces Slot chuck with perforated rubber adapter mat Slot chuck with perforated rubber adapter mat Circular grid chuck Witte VAC-MATTM Chuck specially designed for workpieces Chuck with insert made out of sintered metal or Witte Metapor© for foils and skins

CUSTOMIZED PRECISION WORKHOLDING FIXTURES Customized precision workholding xtures Witte is regarded as market leader for precision workholding xtures combined with vacuum, hydraulic and pneumatic operations. Many well known machine manufacturers worldwide rely on Witte`s experience. Our customers prot from our own solutions and developments used for own daily work for almost 40 years. We will gladly meet the challenge of developing the best possible solution for your requirements. We attend our customers from planning through approval process to after sales service. Our CAD designers who, whilst...

CUSTOMIZED PRECISION WORKHOLDING FIXTURES Vilmill vacuum clamping system incl. mobile vacuum unit 250m/h³, integrated in an HSC milling machine. Vacuum clamping fixture incl. gantry and hydraulic press (2 tons) for selective pressing of large aluminium work pieces.

CUSTOMIZED PRECISION WORKHOLDING FIXTURES Machine table (3,3x11meters) supplied with VAC-MATTM Vacuum clamping. The photo shows the fixture at a well known Aircraft manufacturer, where pockets are milled into a surface area with the help of 468 Mats CNC milling machine equipped with a vacuum system used in house for precision-machining aluminium aircraft parts

CUSTOMIZED PRECISION WORKHOLDING FIXTURES Clamping fixture for machining cylindrical pre-formed aircraft fuselage parts (13m x 4,10m) Parts are pressed down, rolled flat and clamped using vacuum as well as pneumatic and hydraulic clamps

VACUUM SUPPLY Vacuum Supply Pumps Units Workstations Application We have vacuum pumps available of different types to meet each individual need. Size and capacities vary from 3m3/h bis 510m3/h to guarantee optimal vacuum clamping fixtures whatever the circumstances Advantages • Reliable in continuous operation • Easy to maintain • Modular unit has integrated liquid separator • Space saving assembly for easy access • Integrated air filter, safety valve • Witte repair service with spare parts in stock • Pumps from 3m2 to over 300m2, also on request dry running pumps • Liquid ring pumps run on regular...

VACUUM SUPPLY Vacuum pumps Vacuum Units Modular vacuum unit Liquid ring pumps Triplex modular vacuum unit Vacuum workstations

VACUUM SUPPLY Choosing a vacuum unit or pump Depending on your operation Witte offers different vacuum supply systems: Liquid ring pumps These pumpsare highly recommended when large amounts of cooling fluids are involved during the machining process and are sucked in Ǡ Page 24 Modular vacuum unit In addition to the pump and tank the modular vacuum units also have an integrated liquid separator and various safety devices Ǡ Page 20 Vacuum pump Vacuum pump Vacuum pump Vacuum unit Vacuum unit Modular unit Modular unit Vacuum pump Modular unit Vacuum pump Vacuum unit Modular unit Liquid ring pump...

Choosing vacuum supply according to working conditions Working conditions Working with fluids Small clamping area, Small loss of vacuum Low machining forces Handheld pump Handheld pump with liquid separator Larger clamping area, Vacuum Unit Vacuum unit with liquid separator Liquid ring pump Liquid ring pump Higher loss of vacuum, Higher machining forces ̄ Large clamping area Modular vacuum units and workstations are suitable for dry and lubricated machining High loss of vacuum High machining forces Modular vacuum unit Vacuum workstation & Very large clamping area Very high vacuum loss V ery high...