Alufix XL

It is possible to build accurate and especially economical large fixtures using Alufix XL. The main components are bars upto 10 metres long, couplings and connecting elements. The system is available in sizes XL50 (barsare 50x50) and XL100 (bars are 100x100) and both are compatible with Alufix Classic. The profiles are only machined in the ball seats, which allow accurate and stable ball and seat connection as opposed to connections using holes in Alufix Classic. This offers our customers an economical alternative.

Circular Chucks

Applications Optimal clamping of round parts Used on lathes Circular chucks with Metapor inserts are available for turning small workpieces Advantages Allow fixing of parts with various inner and outer diameters Accurate positioning of parts using finite adjustable stops Special solutions possible for diameters outside standard from 100 to 1600mm Handling Span as aluminium or steel

Grid Vacuum Chucks

Applications For simple shaped workpieces with a rough surface and heavy duty milling Grinding Milling Turning Advantages Strong hold down surface Universally applicable Secure clamping of rough workpieces due to high friction properties The o-shaped seal evens out any irregularities between workpiece and chuck surface Handling Any shape or size of chuck made to measure Recommended grid size depends on workpiece contour and dimensions Clamping area defined by polymer o-shaped seal Fine vacuum grid plates for extremely small workpieces in any form Acts as a base for many special solutions in connection with special vacuum adapter mats

Slot vacuum chucks

Application Light milling work Drilling (e.g. semiconductors, electronic parts) Engraving Also for complicated workpieces. Advantages Very flat Large range of uses (rubber adapter mat can be reused of exchanged) Can be used in high speed cutting for precision work with the aid of plane parallel black mats, which can be machined down to achieve optimum accuracy Handling Makes workpiece positioning easier with aid of height adjustable end stops Vacuum area can be reduced by using moveable hose connection, masking foil or rubber adapter mat

VAC-MAT Vacuum Clamping System

Wide spectrum of different workpiece forms can be clamped for Grinding Milling Drilling Five side treatment including milling into the Vac-Mat Advantages Strong hold down force Clamping surface with a high friction value Milling through of outer and inner contours Accurate and precise cut outs due to the fact that workpiece can be milled through into VACMAT leaving a clean cut out Handling Set up reduced to seconds as fitting of single rubber seals become obsolete Surface friendly material which avoids scratching of workpiece surface area No extra clamping fixture needed

VACUUM Pumps and Units

We have all different kinds of vacuum pumps available to meet each individual need. Size and capacities range from 3m³/h - 510 m³/h to guarantee optimal vacuum clamping fixtures whatever the circumstances. Liquid ring pumps Witte offers a liquid ring pump which combines vacuum supply and liquid separator in one. This pump filters gathering coolant during machining process and integrates it into its own water cycle excess fluid is returned to cycle of machining center. Vacuum units Operating vacuum required can be generated in many ways. Witte vacuum units feature the following: Oil lubricated vacuum pumps with an end vacuum rate of 20mbar absolute at full suction Integrated pressure difference switch, which automatically switches the vacuum pump on or off thereby ensuring vacuum during machining, avoiding unnecessary idle running Protection switch which safeguards electric motor from overheating Air filter which protects pump from dirt (made of acrylic glass with an exchangeable air filter cartridge) Careful assembly of compatible components guarantee trouble-free and almost maintenance-free operation using Witte vacuum units in many applications Drainage screw for coolants which have been sucked in 3m connecting cable with CEE or Schuko plug