Om646 2.2L Diesel Engine Crankshaft for Mercedes Benz

Blanks (small crankshafts are forged, large crankshafts are made of nodular cast iron). When forging, the bar is burned red and passed through multiple forging dies to forge into a multi-turn planar shape. The last process in the red hot state twists each turn to the corresponding angle.

1) Car positioning, find out the center of the main journal on a common lathe, and position the two ends of the car.

2) The main journal of the vehicle.

3) The connecting rod journal is turned on a special lathe, the tool holder rotates with the connecting rod journal while feeding the tool, and two connecting rod journals with the same angle are turned at the same time; (trial production or non-mass production is performed on ordinary lathe Make an eccentric fixture on the chuck, and use the connecting rod journal as the center of rotation).

4) Drill oil channel holes, Om646 Crankshaft has lubricating oil channels from the main journal to the crank arm to the inside of the connecting rod journal, and special equipment is used for deep hole drilling.

5) High-frequency quenching, quenching the main journal and connecting rod journal to improve the surface hardness.

6) Grind the main journal.

7) Grinding the connecting rod journal is a very precise special crankshaft grinding machine, which will automatically grind while measuring, and the accuracy is controlled by 0.01mm;

8) Other processing, (flywheel connection keyway, oil return groove, thread, etc.).

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