图为我们设计制造的小水稻收割机转阀中的一个局部结构。在装配过程中我们发现，若按图直接将控制柱塞装入控制柱塞孔中，O形圈会被倒孔与控制柱塞孔的相贯棱边“啃环”，由于此相贯棱边所处位置不易倒角，这就给我们装配提出了问题，后来我们利用石蜡解决了这个问题。首先制造 The picture shows a partial structure of the rotary valve of the small rice harvester we designed and manufactured. During the assembly process, we found that if the control plunger is directly inserted into the control plunger hole according to the figure, the O-ring will be “notched ring” The location is not easy to chamfer, which gives us the assembly posed a problem, then we use paraffin to solve this problem. First make