ABOUT

What new machining technologies are applied to a crankshaft production line with an annual capacity of 200,000 units?
    How does the high-speed crankshaft machining production line do it? Its distinctive feature is the adoption of new crankshaft machining technologies that have emerged in recent years, such as punching quality center holes, high-speed external milling, and the use of CNC crankshaft grinders to simplify the process, as well as the extensive use of CNC control technology and robots to form an automated production line, which shortens the machining time of a single piece of product and thus directly improves the production efficiency.
Crankshaft machining process
    Typical process flow of crankshaft machining for turbocharged engines of passenger cars: dynamic balancing, drilling the center of mass hole → turning the 5th main journal → turning the flange → rough machining the main journal, connecting rod journal and shaft shoulder → drilling the oil passage hole and chamfering → rough grinding the main journal, connecting rod journal journal, side wall and countersinking groove → cleaning, blow-drying → rounded rolling → fine turning, rolling the thrust surface + fine turning the small end → fine turning the flange end and groove → fine grinding the main journal, connecting rod journal, Small end → machining of threaded holes at both ends, pin holes and reaming of center holes of flange end → fine grinding of crankshaft flange end → crankshaft dynamic balancing and de-weighting → abrasive belt polishing of main shaft neck, connecting rod neck and flange outer neck → automatic checking and marking → final cleaning of crankshaft.