Songen Machinery Co., Ltd.  

Product Name: CNC Oil Country Lathe, Spindle Bore Diameter 520mm Model NO.: CNC-OCL520 Condition: New Certification: SGS, CE, ISO 9001 Precision: High Precision Setting Mode: Floor-type Automatic Grade: Automatic Controlling Mode: CNC Power Source: Electric Guide Rail: Horizontal Guide Rail Type: Horizontal Lathe Spindle Bore Diameter: 520 Mm Maximum Workpiece Length Between Centers: 1700 Mm Od of Casings to Be Turned: 13-3/8" - 20" CNC System: Siemens, Fanuc, GSK, etc. Trademark: SonGEN HS Code: 84597000 Product Description 1. General DescriptionThis CNC-OCL520 X 1700 Model CNC Control oil country lathe is widely used to turn the end of various kinds of pipes. Moreover, it has the functions of a general-purposed lathe. The FANUC 0i mate CNC control system and the full-digital AC servo system are equipped on this oil country lathe.2. Main Components2.1 Machine baseThe one-piece construction machine base, the headstock frame, the carriage case, the cross slide and the tool post are made of the high-strength and high-density close grained HT-250 grey cast iron with the resin sand casting processes. They have been processed with three steps of aging treatments including the natural aging treatment of more than 6 months to eliminate the internal stress and retain their stable accuracy in a long time.Bed ways have been supersonic frequency induction quenched and precision ground on a precision guide way grinder. PTFE anti-abrasion soft belts with low friction coefficient are coated on the guide ways on both the carriage and the cross slide to improve the precision of the bed ways and prolong the service life of the lathe.2.2 HeadstockThe 37 KW powerful AC variable frequency motor is controlled by the AC frequency conversion control system and drives the spindle through the narrow V belts and the speed-changing mechanism. The spindle, being shifted in nine steps, runs at infinitely variable speeds in a range of 6 – 205 RPM.2.3 Feeding MovementsBoth the Cross feeding (X axis) and the longitudinal feeding (Z axis) are driven by an independent AC servo motor via the synchronous toothed belt and the precision ball screw pair. Thus the rapid traverses and feeding movements on both the X axis and the Z axis are performed at infinitely variable speeds. The X axis and the Z axis are controlled with semi closed loop using the encoder.The carriage guide ways are processed with medium frequency quenching and precision grinding and coated with PTFE to prevent the carriage from taking the stick-slip motions on the guide ways.2.4 NC Turret4-Station NC turret is equipped with this machine. It features high precision with repeatability of 0.005 mm, stable swivel and simple motions.2.5 TailstockThe design of the stock features high rigidity, loading capacity and convenient operations. The center in mounted internally. The diameter of the quill is 140 mm and it has high rigidity and revolution accuracy.2.6 Cooling SystemUnder the foundation level of the lathe, there is a special coolant reservoir. The coolant is pumped out and flows along the pipeline to the cutting area to improve the cutting conditions.2.7 Lubrication SystemThe central quantitative automatic lubrication device lubricates the ball screw pairs and bed ways periodically.2.8 Hydraulic SystemThe hydraulic system lubricates the headstock and the automatic shifts of the changing gears in the headstock. The main hydraulic components are made in Taiwan. The hydraulic system works reliably and is convenient to maintenance.2.9 Auxiliary SupportingThe auxiliary supporting device is available as an option for this lathe.3. Machine Performance AccuracyPositioning Accuracy, X-Axis: 0.03 mm / 1000 mmPositioning Accuracy, Z-Axis: 0.04 mm / 1000 mmRepeatability, X-Axis: 0.012 mmRepeatability, Z-Axis: 0.016 mmDimension Tolerance: IT 7 GradeSurface Roughness, Finish Cylindrical Turning: Ra3.2 μ MRoundness, Finish Cylindrical Turning: 0.02 mmCylindricity, Finish Cylindrical Turning: 0.025 mm / 300 mmFlatness, Finish Face Turning: 0.025 mm / 300 mmThread Pitch Tolerance: 0.015 mm / 60 mmModelCNC-OCL520 X 1700General ParametersSwing over bed1200 mmSwing over cross slide610 mmBed width755 mmMaxi. workpiece length between centers1700 mmSpindle bore diameter520 mmPipe threads diameters range330 - 510 mmHeadstockSpindle speeds6- 205 RPM, 9 StepsSpindle bore diameter520 mmMain motor power37 KWFeeding SystemTool post cross travel500 mmCarriage longitudinal travel1250 mmTool PostVertical distance from spindle centerline to tool mounting datum plane40 mmTool shank sectional size80x80 mmTailstockDiameter of quill140 mmQuill travel300mmTaper of quill boreMT #6Tailstock cross adjustment±25 mmPower SupplyMain motor37 KW, 1460 RPMClamping motor3 KW, 1420 RPMGear pump2.5 MPa, 1450 RPMCooling SystemCoolant pump0.15 KW, 22 L/MinuteOverall Size and Net WeightOverall size, LxWxH5000x2200x1750 mmNet Weight15000 KG