Vertical Grinder VTG4000/1500 Grinding and Hard Turning Vertical Grinder The KMT Precision Grinding AB Vertical machines gives the user high output quality and can be set up for Internal, External hard turning and grinding operations. Machine concept Work head spindle/worktable Hard turning and grinding, in sequence or simultaneously by two rams: • KMT Precision Grinding AB’s hydrostatic bearings Two rams: Mounted on a two columns, one single beam design. Machine base: Made in cast iron. With active close loop cooling system. Work head: Fixed position work head spindle/worktable (C2) for both axial and radial support. • Rotary magnetic worktable diameter 1500/4 000 mm. • Magnetic chuck for centric work piece chucking. • Direct driven by a torque motor, 20 kW, step less variable speed. • Max 75 rpm, 16 kNm (VTG4000) Machine principles Grinding/Grinding Hard turning/Grinding Grinding/Hard turning Hard turning/Hard turning Max 200 rpm, 6 kNm (VTG1500) • Max load on worktable 10 000 kg (VTG4000) Max load on worktable 3 000 kg (VTG1500). HARD TURNING SYSTEM / Right Ram GRINDING SYSTEM / Left Ram Slides system: Vertical right (Z2) & Horizontal right (X2) KMT Precision Grinding AB’s hydrostatic design. Linear motor driven hydrostatic slide. Slides system: Vertical left (Z1) & Horizontal Left (X1) KMT Lidköping’s hydrostatic design. Linear motor driven hydrostatic slide. Vertical stroke: 860 mm / Hydraulic brake. Vertical stroke: 850 mm / Hydraulic brake. Horizontal stroke: 3560 mm (VTG4000) 2310 mm (VTG1500) Horizontal stroke: 3560 mm (VTG4000) 2310 mm (VTG1500) Max acceleration: 1 m/sec². Max acceleration: 1 m/sec². Max speed: 1 m/s. Max speed: 1 m/s. Resolution: 0,01µm. X1 & X2 are working independently of each other. Resolution: 0,01µm. X1 & X2 are working independently of each other. Grinding with slides/Ram (X2)/(Z2) Tool system Automatic tool changer: 24x Tool holder: Sandvik Capto C6 or acc. to customer demand. Measurments: Probe for tool control. Tool monitoring system Tool probe for workpiece measurement. Hard turning with slides/Ram (X1)/(Z1) Automatic tool changing system External/Internal grinding spindle HF grinding spindle with support GMN TSE 260C-3500/40. 40 kW. Speed 1900-3500 rpm. Electro-mechanical balancing and A-E (gap) by Marposs P7. Automatic grinding wheel change, OD/ID wheels. Wheel diameter 610 mm, OD/ID (VTG4000). Wheel diameter 350 mm, OD/ID (VTG1500). Wheel width 150 mm, OD/ID (VTG4000, VTG1500). Max 60 m/s, variable. Integrated Coolant nozzles for OD & ID. Swiveling of grinding spindle, to be quoted on request Dressing unit for external and internal grinding wheels The dressing unit is fixed to the machine base. • Single point dresser • NC disc dresser • Full profile dresser • Radius dresser Vertical Grinder Technical data Machine VTG1500 VTG4000 Please note that all data stated are correct at time of printing but are subject to change. Type Workholding Internal/ External/ Machine principle Magnetic Chucking Hard Turning Hard Turning Work head spindle torque (Nm) VTG1500 VTG4000 6000 16000 Grinding Grinding wheel size (mm) Grinding wheel speed (m/s) Ø 610 mm Ø 610 mm 60 60 General Work head spindle speed (rpm) 200 75 Work height, from floor to magnetic chuck top face (mm) 400 0 Machine height from floor level (mm) 4400 4000 Machine depth from floor level (mm) 2000 Machine weight (kg) 45000 60000 9500x7450 13000x8800 Footprint (mm) Work Piece Dimension ID OD min Ø 440 max Ø 1450 min Ø 500 max Ø 1500 min Ø 1000 max Ø 3800 min Ø 1300 max Ø 4000 Cooling Water Cooling water pressure 0,25 MPa Consumption 140 l/min Temperature Ambient + 2,5 - °C Hydraulic system Pressure, spindles and slides 90 bar (+5 bar) Filter 5 µm Oil temperature + 3° - Oil Castrol HYSPIN AWS 22 C of ambient temperature. Within 18-35° C Coolant Pressure 0,4 – 0,6 bar Consumption 300 l/min Temperature Ambient Filter 20 µm Maximum dirt content 75 mg/l 2600 + 2,5 - °C Pneumatic system Consumption, average 1200 l free air/min Pressure 0,5-0,7 MPa Quality Class 3.4.4 or less Exhaust 1800 m3/h Noice level 75 db (A) KMT Precision Grinding AB Fabriksgatan 2, P.O. Box 910, SE-531 19 LIDKÖPING, Sweden Phone: +46 510 88 000, Fax: +46 510 24 541, Email: [email protected] www.kmtgroup.com
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