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90°CNC Combined Grinder for Valve Head (500-diameter electroplated CBN forming grinding wheel)
(VHG-02)
1. Processing range (the original state of the workpiece):
Workpiece status | Processing conditions | Remarks |
Valve head diameter | MAX 50mm | |
Stem diameter | 5-12mm | |
Length | 80-250mm | |
Material quality | 21-4N+4Cr10Si2Mo | |
Hardness | 30-60HRC | |
Stem run-out | 0.01mm | |
Angle | 45-60° | |
Valve head surface run-out | 0.05mm | |
Machining allowance | 0.20-0.50mm (diameter) |
2. Processing accuracy and cycle time:
Position | Accuracy | Test methods and tools |
Run-out Accuracy | Continuously process and measure 50 pieces within 0.06 mm. | Special measuring tool |
Dimensional accuracy | Continuously process and measure 50 pieces within ± 0.03 mm. | Special measuring tool |
Surface roughness | Continuously process and measure 50 pieces within Ra 1.60 μ m. | Roughness gauge |
Cycle time | Take the processing stem diameter 7.0 as the standard - 14s/pc. |
