PRÄZOPLAN® Overcoming the limitsThe split µ with multiple output

PRÄZOPLAN GmbH

PRÄZOPLAN 300

PRÄZOPLAN GmbH

PRÄZOPLAN - Overcoming the limits The split µ with multiple output

1 guide for 2 directions - the PRÄZOPLAN-principle

The most important criteria of effectivity in parts construction are:

In which, on the part of the machine tool:

For the machine tool, the requirements of

are fundamentally opposed to each other. None of the machine concepts available on the market have so far been able to meet the above-mentioned requirements simultaneously in an optimal way.For the first time in the world, PRÄZOPLAN combines these requirements simultaneously by means of the fundamentally new concept of the aerostatically planar guide, in which a single slide generates the travel directions X and Y simultaneously by sliding over a plane instead of the usual stack of linear guides. PRÄZOPLAN overcomes the physical limits as follows:

Quality Productivity

Quality can only be optimized by high rigidity and precision of the guiding system Productive can only be optimized by high rigidity allowing high metal Time removal rates Non-produc- can only be optimized by high dynamics in speed tive Time and acceleration

↔ Precision and surface quality ↔ Short productive and non-productive times

Precision: no adding up of the errors of two stacked linear axes, µ- accuracy through extremely high levelness of the guiding plane Rigidity: very short force flow from the slide directly into the machine base, high-rigidity aerostatics Dynamics: very compact slides, drive directly in the center of mass, thus no vibration excitation

Dynamics Stiffness

↔ minimized masses ↔ maximized masses

You can multiply the number of manufactured high-precision parts per time

XY slide, aerostatically guided- XY direction on the machine base- X direction on the traverse

Guide surface Y- Flatness 1 µm

Guide surface XY- Flatness 1 µm

Guide surface X of the traverse

Aerostatic lateral guide of the traverse- Y direction on the machine base

developed with inspire AG / IWF ETH Zürich

Overcoming the limits of conventional machine tools In conventional machine tools, the individual linear axes are stacked one on the other. The central problems of the conventional machine tool manufacture are due to this and can be avoided by the PRÄZOPLAN concept. The adding up of the errors (higher inaccuracy), the adding up of the masses (lower dynamics) and a reduced rigidity due to an indirect force flow (reduced productivity).Instead of two linear axes stacked on each other, the machine slide of the PRÄZOPLAN generates the X and Y axis directions simultaneously by means of planar aerostatics. The slide with a very high rigidity floats on an air cushion over a finely lapped granite surface. Like a height gauge on a measuring plate, it can be moved over the entire plane and maintains its precision over the whole stroke - and adopts the micron accuracy of the granite. The XY slide is driven by a traverse kinematics with linear scales and ball screws of the latest design. The traverse itself also has an aerostatic bearing and moves the XY-slide without passing inherent errors to it (decoupling).The aerostatics especially developed for the PRÄZOPLAN is generously sized and has a low air consumption. Due to the very high damping and rigidity of several 1000 N/µm, excellent milling results can be reached, and it is absolutely frictionless and wear- free for extremely precise positioning movements, constantly over the service life.

Natural granite machine base

Machine structure

Gantry in closed O-arrangementHighest rigidity

4 air spring damping elementsfor vibration decouplingInsusceptible to foundation vibrations

Pneumatic weight compensation

Ball screwsX axis on traverseY axis gantry on machine baseZ axis on gantry Best positioning behaviorHighest dynamics

Linear scales XYZHighest accuracy

Machine base with pla-nar XY aerostaticsHighest accuracy

Motor spindleliquid-cooled35000 rpm, HSK 4080000 rpm, HSK 25, aerostatic Highest accuracy

Z axisQuill with 4-fold guidanceHighest rigidity

Vacuum preloading of the aerostaticsHigh forces, frictionless

Work area accessible from two sides Excellent operator friend-liness thanks to perfect ergonomics

PRÄZOPLAN 300

Motor spindle HSK 40Hybrid ball bearing, 4-foldLiquid-cooledLifetime grease lubrication

High drive outputMetal removal rate for Al 500 cm³/minRoughing operation

Spindle versions

Motor spindle HSK 25Aerostatic bearing Liquid-cooled

Highest accuracy Very high rigidityUltra precision machiningMachining of hard material

further spindles upon request

PRÄZOPLAN GmbH

Spindle characteristic HSK-E40

0

2

4

6

8

10

12

14

0 5000 10000 15000 20000 25000 30000 35000

Speed [1/min]

Torq

ue [N

m] /

Pow

er [k

W]

Torque S1 [Nm]Torque S6-60% [Nm]Torque max. [Nm]Power S1 [kW]Power S6-60% [kW]Power max. [kW]

Spindle characteristic HSK-E25

0

1

2

3

4

5

6

0 20000 40000 60000 80000

Speed [1/min]

Torq

ue [N

m] /

Pow

er [k

W]

Torque S1 [Nm]

Torque S6-60% [Nm]

Power S1 [kW]

Power S6-60% [kW]

The tool change system is located out-side the work area and protected by a tool change door.- Loading station accessible through a sliding door.- Operating panel can be swiveled towards the loading station

Workpiece handling- Part-specific - Pneumatic, electric or hydraulic clamping fixtures- Handling robot with palletizing system and workpiece storage- Rotating option- Cleaning option

We develop the optimum automation solution for your workpieces. Integrati-on of different systems is possible. From the automated solution for un-manned shifts to a linked system for three-shift production of largest lot sizes.

Tool change system- Fast tool changer with double arm gripper with cam mechanism- Preparation of the next tool simultaneously to the main time - Tool capacity 30, 100 and 150

PRÄZOPLAN 300

Technical DataMachine 3-axis high precision machining center Vertical spindle, horizontal clamping area Machine base consisting of accurately lapped natural granite Compound slide with planar guides (XY, horizontal) Latest aerostatic design, directly integrated in the slide bodyGeometry Axis strokes X, Y, Z = 300, 300, 300 mm Clamping surface 325 x 275 mm, hole array M8, 50 x 50 mmDynamics Acceleration X 20m/s², Y, Z 17m/s² Feed rate X, Y, Z = 60 m/minAccuracy Position uncertainty ±1μm (ISO 230-2) Repetitive accuracy ±0,4μm (ISO 230-2)Measuring system Linear scales in all axes, resolution 0.1 µmDrive Ball screwsMotor spindle HSK-E40, 35000 rpm, 8kW (S6-60%), 4-fold bearing, hybrid ball bearings, vector-controlled, position measuring system, liquid-cooled, pneumatic tool clamping systemMotor spindle HSK-E25, 80000 rpm, 5,5kW (S6-60%), aerostatic bearing, vector-controlled, position measuring system, liquid-cooled, pneumatic tool clamping systemTools Tool length 200 mm, tool diameter 60 mm / 100 mm (free neighbor place) Tool weight 3.5 kg / 5 kg (overweight tool)

Tool change time 1.4 s (chip-to-chip time 2.5 s) until 3.5 kg tool weight 2.9 s (chip-to-chip time 4 s) until 5 kg tool weightTool magazine 30 tools (disk magazine) Extension for 100, 150 tools (chain magazine)Control Fanuc CNC 31i Siemens 840D-SL Rotary axes Indexing head, rotating and swiveling head, simultaneous (Option) 5-axis machiningCoolant and Coolant unit integrated in the machine enclosurechip management Chip collecting system and manual chip disposalInstallation System voltage 3x400V/50Hz Rated current 45A Compressed air 6 bar

PRÄZOPLAN GmbH

Options Thermal package Ultra precision package Workpiece handling Clamping plate with T-slots Hydraulic workpiece clamping Minimum quantity lubrication Coolant cleaning system Internal coolant supply Scraper belt conveyor Work area extraction Tool breakage monitoring Workpiece measurement, tool measurement Extinguishing system with fire damper 4-fold light column

DimensionsHeight 2640 mm Weight 4.8 t

- errors and omissions excepted -

Multiplication of the outputReduction of the operating time by half in the watch bottom plate production due to extremely high dynamics and metal removal rates at highest accuracy.

PRÄZOPLAN GmbH

µ-splitting Ultra precision machining of a particle accelerator. Milling of the pocket geometry by line-by-line milling Ra<20nm, flatness <1µm

PRÄZOPLAN 300

PRÄZOPLAN GmbH Werkstraße 35D-78727 Oberndorf a.N. Telefon: +49 7423 922-0 Telefax: +49 7123 922-250 E-Mail: praezoplan@krause-mauser.com http://www.praezoplan.com

Ultra precision machiningTop: Milling of a mirror Ra < 5nmMiddle: Ultra precision part Ra < 5nm

a Company of the Krause & Mauser-Group

PRÄZOPLAN GmbH

Mold making Milling of a mold, reduction of the main time due to extreme dynamics

PRÄZOPLAN 300