The Kopp SK 25 is an innovative 5-axis high-performance grinding centre for multi-functional complete machining.

The Kopp SK 25 is an innovative 5-axis high-performance grindingcentre for multi-functional complete machining Kopp has been partof the EMAG grinding group - Reinecker Karstens Kopp - sinceAugust 2000. Within this group, Kopp is the specialist ingrinding and milling machines for the out-of-round machining ofhigh-precision workpieces, as used by many branches in theautomotive and mechanical engineering industries: cams, polygons,operating cams for printing presses and textile and packagingmachines, injection pump housings, housings for power-steeringpumps, tripods for drive elements, camshafts and crankshafts. AtEMO 2001 the Emag grinding group showed its Kopp SK 25 5-axisGrinding Center in its presently realisable top version, formulti-functional, 5-sided complete machining.

With thisproduction tool Kopp belongs to the trendsetters in combining andintegrating different processes thus reducing the processsequence succession - with all the advantages for the user:higher machining quality, faster throughput, as there are nointerim storage periods between several individual machines,shorter retooling times, lower capital outlay and reducedcomponent manufacturing costs.

The Kopp SK 25 is primarily usedwhere complex, high-precision workpieces have to be completemachined from 5 sides in one set-up, necessitating severaldifferent machining processes: internal and external machining ofround and prismatic workpieces of up to 500mm diameter or 500mmside dimension, employing internal and external cylindricalgrinding, out-of-round grinding, surface grinding, slot grinding,polishing, drilling, and milling operations.

The workpiecesinclude chuck casings, housings for thread rolling heads andcomponents with free-form or functional multi-plane surfaces.

The3 linear and 2 rotary axes can be used independently or ininterpolation.

To fulfil the demands for tight tolerances themachine is exeptionally sturdy and thermo-stable in design.

Theguideway layout and the use of precision linear guideways ensurethe necessary high dynamic of the axes.

Various automationmodules for tool and workpiece changes are available to create atailor-made production tool.

As is customary on machiningcenters, the 16-station tool changer allows for individual toolsto be changed; but in addition to that, or in lieu of it,complete machining units can also be changed at a chip-to-chiptime of just 20 minutes.

This permits the use of grinding unitswith high-frequency or belt-driven spindles, planetary grindingattachments for the grinding of slots or grooved cams, and alsoof milling units.

The simple exchange of individual tools orcomplete machining units also makes it possible to use the mostfavourable grinding material for each application: CBN, diamond,ceramics or PCD.

Workpiece loading/unloading is also designed tosuit individual customer requirements: manual or automatic, bypallet changer or gantry loader.

When it becomes necessary togauge the machining allowance or carry out an in-process gaugingoperation on the machined component, the appropriate measuringprobe is transferred from the tool changer.

An acoustic touchrecognition device is employed to avoid unproductive'air-grinding'.

The capability of the Kopp SK 25 wasdemonstrated at EMO 2001 with the complete machining of ahigh-precision component for a hydraulic power chuck: externalcylindrical grinding of the O/D, grinding of the front and rearend faces, three-dimensional grinding of the innner and outerguideways for the chuck jaws.Press Release Communiqu‚ dePresseInformationen fr die Presse1 / 1.