Engine Valve Cut Off Machine
1. Processing range (the original state of the workpiece):
Workpiece status |
Processing conditions |
remarks |
Valve head diameter |
Within MAX 80㎜ |
|
Stem diameter |
φ 5~14㎜ |
|
Length |
80~250㎜ |
|
Material quality |
21-4N+4Cr10Si2Mo |
Import: SUH: 3, SUH: 35, etc |
Hardness |
30—60HRc |
|
Stem run-out |
0.01㎜ |
|
Valve head surface run-out |
0.1㎜ |
|
2. Processing accuracy and cycle time:
Position |
Accuracy |
Test methods and tools |
Run-out accuracy |
Continuously process and measure 50 pieces within 0.03 mm. |
Special measuring tool |
Dimensional accuracy |
Continuously process and measure 50 pieces within ± 0.03 mm. |
Special gauge tool&vernier caliper |
Cycle time |
Take machining allowance of stem diameter 8 as the standard - 6s/pc. |
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