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Shrink Fit System

® Shrinking Technology Shrinking process
heat heat heat • Absolutely tight connection between toolshank and shrink chuck. This means that coolant can only flow through the cooling channels in the cutting tool.shrinking technology permits elevated speedsand feed rates. Improved surface quality and longer tool and spindle life are achieved.This increases productivity.
Shrink chuckExternal-ØTool shankShrink chuckInternal-ØGap Heating Systems: A number of different systems are in usetoday (hot air and induction systems, flame), the fastest and simplest of which is induction heating. Short heating-up and cooling-down times, localised heat evolution and integrated cooling systems are essential factors for safe and easy handling. Low noise, low costs and an integral preset option are advantageous.
heat The Concept: Shrinking is a known method of producingpermanent connections. Relatively recently, however, it has also begun to be used for clamping and releasing cylindrical tools in shrink chucks for high-speed cutting.Inductive heating of the chuck increases itsinternal diameter enabling the tool shank to be inserted.Cooling (reducing the internal diameter) thenexerts a strong clamping force on the tool shank, clamping the tool evenly in the chuck.This method is particularly suitable for solidstraight shanks but can also be used for Weldon and Whistle Notch shanks.Provided that the deformation remains withinthe elastic limits, this process can be repeated at will and at high speed. Advantages: • Best runout (<3µm) due to uniform clamping forces. • Higher clamping forces than withconventional adaptors. • Slender chuck shape since there are nomechanical clamping elements (clamping screws). • Ideal for high-speed machining, since thesymmetrical shape allows optimum balancing quality.

Die and Mould - 7354 C

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