SKR7620B internal thread grinding center
SKR7620B internal thread grinding center is mainly used in ball screw industry
Classification:
Complete set of ball screw processing equipment
Product accessories:
- Main use
- CNC system configuration
- Working accuracy
- Technical features
- Main specifications and parameters
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- Commodity name: SKR7620B internal thread grinding center
SKR7620B internal thread grinding center is mainly used in ball screw industry
The SKR7620B internal thread grinding center is mainly used in the ball screw industry, and is suitable for compound precision grinding of internal thread, outer circle and shoulder surface of double arc ball nut.
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• CNC system: SIEMENS 828D CNC system
• CNC axis (5 axis 3 linkage):
Head workpiece spindle C axis full closed loop
Worktable feed axis Z-axis full closed loop
• outer four feed U axis
Internal grinding feed X-axis full closed loop
• Inner frosted carrier helix lift angle A axis
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Machine Tool Working Accuracy Arc Internal Thread Grinding Accuracy
Basic lead limit deviation: 0.004mm
Cumulative tolerance of lead in effective length: 0.006mm
Roundness of middle diameter: 0.005mm
Surface roughness: Ra≤ 0.4um
cylindrical grinding accuracy
Cylindricity: 0.003mm
surface roughness
Shoulder surface: Ra0.63μm
External: Ra0.4μm
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• Internal thread grinding, cylindrical grinding double grinding wheel frame layout, can be completed in a clamping ball nut of the outer circle, end face and internal thread processing.
• The automatic control of the spiral lift angle movement of the grinding wheel spindle is realized. The inner grinding wheel spindle is a high-speed electric spindle.
• The outer grinding wheel spindle is a high-precision dynamic and static pressure spindle, which effectively improves the surface finish of the workpiece.
• The user can choose the measuring device to realize the automatic tool alignment of the workpiece.
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• Maximum workpiece rotation diameter: 200mm
• Maximum workpiece installation length: 200mm
• Grinding workpiece diameter
Internal thread: 20-150mm
Outer circle: 20-120mm
• Maximum grinding workpiece length
Internal thread: 150mm
Excircle: 200mm
• Center height: 210mm
• Pitch of grindable thread: 1-24mm (metric)
• Maximum helix angle of grinding internal thread: ± 12 °
• Head frame center hole taper: Morse No. 5
• Spindle speed during workpiece grinding
Internal thread: 0.2-100rpm
External circle and shoulder surface: 50-150rpm
• Grinding wheel spindle speed
Internal thread: 24000 rpm
Outer circle: 3000 rpm
• Grinding wheel size
Maximum diameter of internal thread: 80mm
Minimum: 16mm
Excircle: 400-500mm
• Grinding wheel linear speed
Internal thread: 28 m/s
Outer circle: 45 m/s
• Overall machine size: 3100x2050x2400mm
• Machine weight: 6500kg
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