I. General Feature of the machine:
H236A CNC Crankpin Grinder is used for mass crankshafts in the automobile, diesel-making factories. Siemens control system is adopted for 9 axis control in wheelhead infeed, wheel profile dressing, worktable movement, main spindle of the workhead & tailstock synchronization, workpiece index and support point auto tracing of the steady–rest. Index grinding for the different journal or crankpin is designed with the functions of: Auto plunge–in, rough grinding, semi–rough grinding, semi–fine grinding, fine grinding, auto positioning, auto on-line measuring, auto clamping and release, auto wheel dressing and wheelhead compensating after dressing, and safety interlock, ect. All machining will be automatically except workpiece loading.
II. Specification of the machine:
Max. Dia swing over table Φ 400mm
Max. Amount length of the workpiece 1500mm
Max. Dia. Of the grinding wheel Φ 1100mm
Max. Workpiece weight 120kg
Wheel peripheral speed 45m/s(constantly)
Wheelhead motor power 30KW
Wheelhead infeed speed 0.1~5000mm/min
Wheelhead infeed resolution 0.0005mm
Worktable moving speed 1~8000mm/min
Worktable moving resolution 0.001mm
III. Working accuracy:
Roundness 0.004 mm
Cylindricity 0.004 mm
Shift tolerance 0.1mm
Crankpin throw tolerance in radii ± 0.03mm
Surface roughness:
Cylindrical Ra 0.4μ M
End face Ra 0.8μ M(by eye)
Audited Supplier 
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