Material: Alloy Steel#4340
Quantity: 80 pcs
Surface treatment: Heat treatment HRC40-44, Sandblasting
Accuracy requirements: plus or minus 0.025
Features: CNC on the 6 sides of the part, EDM the area where CNC machining is unavailable.
7. Technical difficulty: Tight internal structure accuracy requirements,  difficult to measure.
8. Solution to the technical difficulty: Adjust lathe and CNC turning the precision hole with a diameter of 22 according to the accuracy requirements. Then test and make sure the precision of the hole. After confirmation of the precision, CNC turning the internal lug boss. Thus helping  to ensure the accuracy of the hole position