SK 7420BX750 CNC screw grinding machine
Mainly used for processing a variety of external thread workpiece arc raceway
Key words:
Classification:
Complete set of screw processing equipment for key parts of automobiles
Product accessories:
- Main use
- CNC system configuration
- Working accuracy
- Technical features
- Main specifications and parameters
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- Commodity name: SK 7420BX750 CNC screw grinding machine
Mainly used for processing a variety of external thread workpiece arc raceway
This machine is CNC control, through the configuration of SIEMENS 828D numerical control system, control four axis three linkage, realize the machining movement of the machine tool and the trimming movement. It is mainly used for processing circular arc raceways of various external threaded workpieces, such as ball screws, steering screws and other parts. The machine tool is controlled by CNC. Through the configuration of SIEMENS 828D numerical control system, the four-axis three-linkage is controlled to realize the processing movement of the machine tool and the modification movement of the dresser. Mainly used for processing a variety of external thread workpiece arc raceway, such as ball screw, steering screw and other parts.
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• X-axis, Z-axis movement are supported by linear guide;
• The horizontal movement of the grinding wheel frame (X-axis) and the longitudinal movement of the worktable (Z-axis) are directly driven by linear motors;
• The rotary motion of the headstock spindle (C-axis) is directly driven by a torque motor; the headstock spindle and grinding wheel spindle are supported by high-precision rolling bearings;
• The grinding wheel spindle adopts synchronous motor direct connection, frequency converter speed regulation, to achieve constant linear speed of the grinding wheel;
• C- axis is equipped with grid encoder, X-axis and Z-axis are equipped with grid scale to realize closed-loop control; The grinding wheel corrector is equipped with diamond rolling wheel for forming and dressing.
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Precision reached by grinding ball screws
• Spiral accuracy (P1 level)
Within 2π radians: 0.004mm
On any 300mm length: 0.006mm
Pinch diameter size variation: 0.01mm
• Surface roughness: Ra0.4μm
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• Maximum installation diameter: 200mm
• Maximum top distance: 750mm
• Maximum grindable diameter: 200mm
• Minimum grindable diameter: 10mm
• Maximum length of grinding thread: 700mm
• Grinding thread pitch: 0.25~24mm
• Maximum lead angle of grinding thread: ± 25 °
• Number of grinding thread heads: 1~99 (arbitrary)
• Maximum workpiece weight: 25Kg
• Maximum speed of grinding wheel: 45 m/s
• Grinding wheel size
Outer diameter x inner diameter: Φ500-Φ350xΦ203mm
Thickness: 10mm
• Machine host weight: about 6 tons
• Machine host dimensions: 3700x2200x2200mm
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