Precision slender shaft grinding process

An elongated shaft generally refers to a workpiece having a ratio of length to diameter (abbreviated as aspect ratio) greater than 25. Figure 1 shows a certain type of marine mechanical parts. The shaft diameter is Φ6.4mm, the shaft length is 400mm, and the length to diameter ratio is 62. The shape accuracy is extremely strict, so it is called precision slender shaft. Due to the poor rigidity of such an elongated shaft, under the action of the grinding force during grinding, the workpiece is easy to bend and longitudinally sag in the lateral direction, so that the workpiece bus after grinding is not straight.

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