Operating Instructions Centro P Collet Chucks
Contents
1. 20005 GB 1H 102006 EF Rev A 7 8 FRANKEN Operating Instructions 13 How to solve possible faults unacceptable tool runout unacceptable tool runout after automatic tool change coolant is spouting through the clamping sleeve no coolant comes through the tool Sales by FRANKEN GmbH amp Co KG Fabrik fur Prazisionswerkzeuge Frankenstrae 7 9a DE 90607 RUckersdorf October 2006 dirt swarf in chuck body clamping sleeve clamping nut or at the tool shank cutting tool itself inaccurate for Bead laGtheriolien example long drills tool shank is not clamped sufficiently minimum 2 3 at small completely of the clamping length of the collet always use new ER Collets with a worn or damaged collet in use narrowed tolerance bearing in the pre setter or in the accuracy check machine is not o k bearing problem in the machine S internal cone of the machine is worn or there is dirt swarf automatic tool changer is not aligned to the machine spindle Camp CAUCA Dy AANG IG CNEGK wrong seal is inserted shank is smaller than the to be sealed aggressive coolant replace seal for new one tool is inserted with the cutting replace seal if damaged and re edge through the seal position tool coolant bores in the chuck stop screw or the coolant supply of the machine are impaired clean all parts ref to item 3 and 5 very intensively tool shank to be inserted the whole length of2. 488 To maintain system accuracy and in order not to damage the sliding surfaces of the clamping nut the cylindrical double guides before and after the thread and the thread itself must be free of swarf and dirt The clamping nuts are available in two versions e Version without seal the collet face is flush to the face of the clamping nut i e the cutting tool can be clamped shorter and is therefore more stable e Version with seal for inner coolant supply as well as to avoid entry of dirt and swarf into the chuck The clamping nut and the seals must be checked before inserting and must be cleaned if necessary 4 Design chuck body clamping nut version with or without seal The GASES 7 WW YY E eins Vt x KER adjustable stop screw Collet ER form W ou U i seal optional po am Page 1 EMuGE FRANKEN Operating Instructions 5 Tool check Inspect and clean the tool shank to be clamped Check the accuracy from the shank to the cutting edge this can be done for example in a vee block 6 Tool length pre setting Tool length pre setting is possible from the front as well as from the rear through the chuck body In order to clamp the cutting tool in the optimum position i e as short as possible but as long as necessary we offer three types of adjustable stops e form U for long tool shanks that go through the collet into the collet chuck e form W when the to
3. 7 8 Operating Instructions FRANKEN Operating Instructions Centro P Collet Chucks Please pay attention to the fact that Centro P is a precision collet chuck system and constructed to clamp nominal diameters only in order to achieve highest possible system accuracy and optimum stability 1 Product features e extreme high system accuracy and repeatability Sum checked at the cutting tool at a distance of 3 x D max 50 mm high clamping forces gripping of shanks with H10 tolerance without loss of accuracy tool shanks are axially clamped on the entire length which leads to remarkable concentricity the extra long double length guide between chuck body and clamping nut results in perfect stability with maximum compactness which minimises bending and compression loads without compromising operating clearances e designed for HPC and conventional applications for HPC applications we recommend the Mini nut versions as their construction reduces wind noise e for drilling milling tapping and reaming e taps can be clamped in standard collets 2 Executions Centro P is available in different executions SK HSK MAS BT CAT and on customers request 3 General hints and cleanliness for use of a Centro P Collet Chuck In order to guarantee the system accuracy of 5um we highly recommend the use of ER Collets with narrowed tolerance since they are perfectly matched to Centro P The Collets are produced to DIN6499 ISO 15
4. ol shank ends in the collet This is particularly the case with small diameters note minimum 2 3 of the clamping length of the collet should be clamped and e form R is a blank which can be adapted to the diameter of the collet The diameter of the adjustable stop must be minimum 0 5 mm smaller than the nominal diameter of the collet in order to ensure that the collet clamps only the shank of the cutting tool 7 Clamping of the cutting tool e If necessary insert the fitting seal the vulcanised side must locate against the collet face e Press the collet axially into the clamping nut until the collet head clips into the extraction groove note no eccentric e Insert the cutting tool into the collet e Length pre setting from the front with screw driver socket wrench e Screw on the clamping nut by hand loose on the chuck body e Insert the cutting tool till it backstops e Alternatively length pre setting from the rear with T handle hex wrenches Page 2 7 8 Operating Instructions FRANKEN 8 Clamping of the cutting tool Clamping is made by either a hook wrench DIN1810 B with pin for standard nuts or special wrench for the mini nuts For the standard nuts sizes ER16 as well as size ER32 we recommend to use a torque setting wrench with the respective heads for clamping especially for milling in order to get the optimum clamping forces The maximum clamping torque is also mentioned on the clamping nut Sched
5. the collet replace seal for correct size clean the coolant bores with a cleaning medium not acidic because of the rust Telephone 49 911 9575 5 Facsimile 49 911 9575 327 E Mail info emuge franken de Internet www emuge franken de www frankentechnik de Page 4
6. ule of the torque moments for clamping the chucks max clamping heads for torque setting type wrenches torque wrenches Erem 28Nm 668 16 A ER16 _ 50Nm_ 6681 16 6692 10 ER32 105Nm 6681 32 6692 20 9 Changing of the collet When loosening the clamping nut the collet is extracted out of the chuck body Having removed the cutting tool from the collet lateral pressure the collet leaves will aid removal from the clamping nut In order not to damage the collet we highly recommend the use of our collet extractor with which the collet can be removed safely and easily from the clamping nut Attention Before repeated insertion and clamping of a collet please make reference to items 3 and 5 and use only ER Collets with narrowed tolerance 10 Changing of the cutting tool It must be ensured that there is no swarf or dirt on the surfaces of the collet which could negatively influence the system accuracy and damage the collet When changing the cutting tool the clamping nut and the collet should be removed from the chuck body and cleaned thoroughly 11 Maintenance A special maintenance additional to normal cleaning processes is not necessary 12 Safety Be aware of the safety instructions of the machine or other tools used Never work with open machine door especially at high speed or when using HSK tapers Collisions at high speed could result in breakage of the cutting tool or collet chuck causing serious injury Page 3 ZB
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