N4 Impression

Product catalog summary

Fields of Application: The machine is designed for wet machining and is suitable for materials such as glass ceramics and composites. It is used for creating crowns, bridges, fully anatomical crowns and bridges, inlays, onlays, abutments, telescope crowns, veneers, and table-tops.

Basic System Specifications: The machine features a construction machine bed made of massive aluminum cast with 4 axes. The positional range for x/y/z is 80 x 60 x 40 mm. It uses precise ball screw spindles for the 3 linear axes with a motor resolution of less than 1 μm and ground steel precision guide rails. The spindle lead angle is 4 mm, and the repetition accuracy is ± 0.003 mm. Axis measurement is conducted with a calibration specimen, and automatic axis compensation ensures exact results. The housing is fully encapsulated with a closable front cover and automatic safety interlock during machining. The working chamber is illuminated with status indication. The dimensions are approximately 360 x 451 x 471 mm, and it weighs around 50 kg.

Rotary Axes: The A axis offers the highest true running accuracy with a rotation range of +190° to −10°. It includes a fixing device for 3 blocks with round shanks, with a total positioning range for workpieces of 60 x 40 x 20 mm. Workpieces are exchanged manually.

Controller Features: The G12M controller provides smooth operation, high processing speed with exponential acceleration ramps, and a look-ahead feature for continuous velocity. It includes 4 digital inputs and outputs, 5 motor end phases, a four-quadrant controller, and does not require a fan for cooling. An extension slot for special features and an optional Ethernet interface are available.

Spindle Features: The synchronous spindle SFN 300P has a nominal power of 300 Watts under constant load and a maximum power output of 600 Watts. It operates at rotational speeds up to 60,000 RPM with 4-fold hybrid ceramic ball bearings. Radial deviation at the internal cone of the precision shaft is less than 1 μm. Sealing air prevents foreign substances from entering the bearing area, and cone cleaning is included. The collet chuck is pneumatic stainless steel for tools with a 3 mm shank diameter and a maximum total length of 35 mm.

Tool Change Features: The machine includes an automatic tool changer for 8 tools with 2 removable changer stations for easy equipment. It features haptic tool length detection and tool breakage monitoring. Diamond-coated tools can be used, and compressed air monitoring is included.

Wet Grinding Features: The tool is cooled by 8 liquid nozzles along its full length. A removable drawer is provided for cooling liquid and filter. The mechanics, electronics, and spindle are protected by a flexible rubber gaiter.

Air Extraction: No extraction is necessary.

Other Features: The machine is certified according to ANSI/UL 61010-1 for exports to the USA and Canada, with certification in preparation.

Catalog excerpts

Technical Data N4 Impression Fields of application Machinable materials glass ceramics, composites crowns, bridges, fully anatomical crowns and bridges, inlays, onlays, abutments, telescope crowns, veneers, table-top Basic system Construction machine bed of massive aluminium cast • recise ball screw spindles for the 3 linear axes p • otor resolution < 1 μm m • round steel precision guide rails g • mm spindle lead angle 4 Repetition accuracy Axis measurement • easurement of axes with calibration specimen m • utomatic axis compensation for exact results a • omplete encapsulation of working chamber with closable front cover c • utomatic safety interlock at the front cover during the machining process a Working chamber illumination yes, with status indication Rotary axes Features • A axis: highest true running accuracy • otation range: + 190° to − 10° r Fixing device for 3 blocks with round shanks (total positioning range for workpieces: 60 x 40 x 20 mm) manual exchange type G12M • reat smoothness of running, powerful and accurate due to microstep operation g • igh processing speed due to exponential acceleration ramps h • ook-ahead feature for continuous velocity along the path l • digital in- and outputs each 4 • motor end phases 5 • our quadrant controller f • o fan necessary for cooling n • xtension slot for special features e • ptional Ethernet interface o synchronous spindle SFN 300P • ominal power under constant load (S1): 300 Watt n • aximum power output (Pmax): 600 W m • otational speed range up to 60,000 RPM r • 4-fold bearing • ybrid ceramic ball bearings h • adial deviation at internal cone of the precision shaft < 1 μm r • ealing air prevents entering of foreign substances in the bearing area s • cone cleaning Collet chuck pneumatic stainless steel collet chuck for tools with 3 mm shank diameter and max. 35 mm total length

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Technical Data N4 Impression Tool change • utomatic tool changer for 8 tools with 2 removable changer stations for easy equipment a • aptic tool length detection and tool breakage monitoring h • iamond-coated tools can be used d • ompressed air monitoring c • ool is cooled by 8 liquid nozzles in full length (from tip to shank) t • emovable drawer for cooling liquid and filter r • rotection of mechanics, electronics and spindle by flexible rubber gaiter p Other Peripheral equipment Special feature certification according to ANSI/UL 61010-1 for exports to the USA and Canada in preparation

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