SAACKE UW I D CNC universal grinding machine

SAACKE UW I D CNC universal grinding machine was manufactured in Germany in 2020. The extremely powerful machine is designed for the fully automatic wet grinding of a wide range of tools, such as knives, cutters or drills. Machining is performed in a single work cycle, which significantly increases production efficiency, saves time and reduces costs.

The SAACKE CNC tool grinding machine allows the use of a chain or pallet system for automatic tool feeding and machining of workpieces within it with a maximum diameter of 250 mm and a length of 480 mm. Precision tool grinding is performed in five numerically controlled axes (X,Y,Z,A,B) using grinding wheels housed in a 6-position magazine separated from the workspace with an automatic grinding wheel changing system.

In order to guarantee high travel speeds and positioning accuracy, the X,Y and Z axes of the UWID CNC tool grinder are mounted on sturdy guideways with hardened tracks. The movement of these axes is realised by twin-nut-pull screws.

The high-tech SAACKE UWID CNC grinding center has extensive equipment, which includes a RENISHAW 3D measuring probe for automatic tool positioning, a NUM Flexium Plus CNC control extended with many additional functions and HEIDENHAIN glass measurement scales. The total weight of the grinding machine is approximately 4900 kg.

Technical specifications of the SAACKE UW I D CNC grinding machine

• number of numerically controlled axes: 5 (X, Y, Z, A, B)
• working area (l x w): 3000 x 2100 mm
• feed rate in the X/Y/Z axis: 625/305/305 mm
• horizontal rotation range of grinding head: 245°
• speed of feeds in the X,Y,Z axis: 0-15 m/min
• grinding head turning speed: 120°/s
• maximum tool length (in claws): 480 mm
• maximum tool length (from front edge of headstock): 430 mm
• maximum tool diameter: 250 mm
• number of stations in rotary grinding wheel magazine: 6 pcs.
• maximum grinding wheel diameter: 150 mm
• maximum spindle speed (A axis): 600 rpm
• spindle cross-section (A-axis): fi 32 mm
• spindle indexing accuracy (A axis): ± 15
• spindle power (A axis): 3 kW
• minimum grinding electro-spindle speed (B axis): 2000 rpm
• maximum grinding electro-spindle speed (B axis): 10000 rpm
• power of grinding electro-spindle (B axis): 16 kW
• position measuring system (B axis): intermediate system
• height of claws: 195 mm
• accuracy: 0,0001 mm
• useful table surface for tailstocks and telescopes: 900 x 185 mm
• operating hours: 6094 h
• spindle working time: 2204 h
• X axis drive power: 3 kW
• grinding head drive power (Y axis): 3 kW
• power of cross slide (Z axis): 3 kW
• grinding head rotation power (B axis): 3 kW
• power supply: 3x 400 V; 50 Hz
• weight of machine UW I D: approx. 4900 kg

Equipment of the CNC grinding machine

• CNC controller NUM Flexium Plus extended with additional functions, i.e:

– complete programme for the production and sharpening of cutters
– grinding of complex shaped tools using DXF files
– complete programme for production and grinding of drills, step drills with different face forms, reamers, countersinks and taps
– circular grinding of cutters, drills and shaped cutters
– NUMROTO programme for three-dimensional collision check and simulation of grinding drills, cutters and special tools directly on the PC unit

• measuring probe: RENISHAW 3D
• glass measuring rulers: HEIDENHAIN
• automatic grinding wheel changing system
• liquid-cooled grinding electro-spindle
• digital servo drives: NUM
• hydraulic chuck: SCHUNK
• PC unit
• spindle taper: ISO 50
• workspace illumination
• grinding disc mounting flange with automatic quick-action clamping: HSK-E50
• collet M24 for DIN 69871 shank taper
• union nut for clamping reduction sleeves
• control cabinet with cooling unit