1. The key of the disc type workpiece is the general material of the disc type. There are cast iron, forging parts, sawing or electric welding, gas cutting parts, but their common features are about 5~10mm. Most of the lathes Both use a three-jaw chuck to hold the remaining part. Then, in one turning forming, the starting point of the turning tool is far from the fulcrum due to the small clamping length. When the cutting force is multiplied by the clamping arm force when the cutting force is greater than the clamping force, the workpiece moves away, and the workpiece is severely loaded from the chuck. Falling down and causing an accident, the mechanic can only be processed with a small cutting amount, and the labor productivity is very low.
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