Gebraucht G&N IDS 34 #142089 zu verkaufen

Inner diameter saw, 34" Specifications: Substrates capable: silicon, germanium, GGG, samariumcobalt, ferrite, glass, ceramic, semi-precious stones Machine frame: Vibration-free cast construction Removable sheet metal covers on all sides Swing type crystal holder: inner diameter saw blades up to 34" (860mm) Frame rests on (6) shock and vibration absorbers Blade mount: Arranged horizontally Axial and radial air bearings in optimum material combination (2) Separate air connections for supply of air bearings Air bearings sealed by labyrinth seals Stationary inner cup: 260mm inner diamerter and (2) removable covers for control of the rotor disc Massive rotor disc: heavy-duty special alluminum allow Saw blade held by clamping ring Spindle unit: horizontally adjustable, fitted to machine frame with (3) special screws Supply pressure: 6 bar Supply volume: maximum 30 m^3/hour Axial runout of tensioning ring: less than 0.003 mm Radial runout of tensioning ring: less than 0,015 mm Radial runout of spindle pulley: less than 0.05 mm If supply pressure drops below 4.5 bar, spindle drive is switched off via 2 air-lack differential switches, the monitors of axial and radial pressure Top surface and inner diameter of supporting ring protected by welded stellite coat Spindle drive: AC motor: 3kW Spring-pressure disk brake Spindle drive: endless flat belt, grounding on both sides Self-acting belt tensioning device Power supply by electronic frequency converter Spindle speed (infinitely variable): 500 to 1500 RPM Spindle speed indication by 4-digit digital readout Monitoring of the drive system by revolution control system Machine automatically switched of if RPM is less than 900 Run-up time: less than 3 minutes Run-down time: less than 2 minutes Ingot infeed: Arranged vertically to horizontal blade Ingot clamping on the slide via holder, centering pin, quick clamping lever Guide-ways of pre-loaded slide coated and grounded Rolled ball screw pitch: 5mm Top and bottom end position of the slide are limited by limit switches Ingot dimensions: Ingot dimensions: crystals up to 200mm ø and 570mm length Orientation: ± 7° in (2) directions (scale graduation: 1 minute) Thickness range: 0.6 to 6mm in 1µm increments Index system repeatability: less than ±2µm Infeed rates: Up: 16 mm/sec Down: 16mm/sec Down: 2mm/sec Cutting feed system: Ingot feed mounted on massive, rigid, horizontal moving cast arm Rests on large column and runs on (2) tapered polymer coated slide ways Column clamped in a cast flange, screwed to machine frame Cutting feed drive effected via ground ball screw, 2mm pitch, driven via disc gear motor, gimbal suspension of swing arm drive Feed rate is infinitely variable, maximum 1800mm/min Respective sawing positions can be preselected, monitored via potentiometers Swing arm can be moved to extreme right hand position for saw blade or ingot change Automatic wafer recovery system: Wafer unloading within blade mount through 260mm dia bore of inner cup and air bearing spindle via a rigid linkage arrangement and a large surface vacuum chuck Pick up chuck can be lowered 30mm, adjustable in end positions Pick up chuck adjustable in (2) directions parallel to ingot to be cut Additional height line feed Vacuum and the back air for sawn wafer supplied thorugh linkage Wafer transfer: blade bore Swiveling handling arm with vacuum head takes sawn wafer from pick up chuck, lifts off and swivels through 900 to the rear Wafer discharged in rear end position Automatic switch off if wafer breakage or incorrect pick up Possible control functions: Set up: All functions are operated individually, feed and infeed are interlocked Single cut: One feed motion without return Automatic: Fully automatic operation with automatic unloading Pack slicing: Adjustable for 1 to 999 cuts via three-decade selector switch Signal bulbs: Indication of faults: lack of air, vacuum, filter faults are indicated by signal lamps Measuring and control unit Micro-Epsilon: For monitoring and controlling saw blade with respect to saw quality and connected characteristics of saw blade Supplies operator with information about possible unnecessary dressing procedures Contactless gauging unit measures saw blade deviation during cutting cycle Technical data: Crystal range (dia x l): maximum 200 x 570mm Packet cut of (2) crystals up to 125mm ø each Sawblade diameter: 860 x 304mm Rotational speed of spindle (infinitely variable): 500 to 1500 RPM Spindle and drive: Spindle: aerostatic bearings Motor: 3kW, mechanical brake Sawing feed: Feed rate (infinitely variable): 0 to 150 mm/min maximum Return speed: 1800 mm/min Index system: 0.6 to 6mm Indexing accuracy: 5 ± 2µm Indexing speed: maximum 1500 mm/min Orientation: Adjustable: + 7° in two levels Coolant: Flow rate adjustable: up to 12 L/h Indication: flow meter Hydraulic system: Pump: 0.55kW Tank volume: 25 L Pressure: 35 bar Services: Connected load: 7kW Electrical supply: 220/380V, 50Hz Compressed air: 6 bar Features: Automation: Unloading device and vertical arrangement of crystal: automatic withdrawal of individual wafers without stopping machine Simultaneous operation of other machines is possible Predetermined number of wafers can be semiautomatically packet cut Ergonomics: Horizontal arrangement of sawhead allows for access and fitting of sawblade with (2) clamping collars Precision: Entire sawhead runs in radial and thrust aerostatic bearings Adjustable on all levels Electronic control and closed loop measuring system Smallest infeed increment: approximately 0.6mm Repeatability: < + 2µm Rigidity: Rigid construction and dynamically balanced rotating components Demonstration machine CE marked 2007 vintage.