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凸轮板是叶片泵定子加工中的关键工装,它决定定子曲线的形状和精度。凸轮板材料为40Cr钢,其形状和尺寸如图1所示。原工艺采用高频淬火,要求硬度为52～57HRC。加工工序是锻造—机加工—调质—精加工—高频淬火—修整。由于定子种类繁多,每个排量的B轴尺寸不同,且都是单件生产,为每个凸轮配制感应圈,数量较多,制造难度较大,生产成本也高。由于凸轮板的形状特殊,往往造成加热不均,棱角处易过热,致使淬火后变形较大,达0.1mm左右,淬火硬度也不均匀,甚至有开裂现象。淬火后对凸轮曲线的修整比较困难,为了防
Cam plate blade vane pump stator processing is the key tool, which determines the shape and accuracy of the stator curve. Cam plate material is 40Cr steel, its shape and size shown in Figure 1. The original technology using high-frequency quenching, the required hardness of 52 ~ 57HRC. Processing process is forging - machining - quenching - finishing - induction hardening - dressing. Due to the wide variety of stators, the B-axis dimensions vary for each displacement, and are produced in one piece, with induction loops for each cam, larger numbers, greater manufacturing difficulty and higher production costs. Due to the special shape of the cam plate, tend to cause uneven heating, angular easy overheating, resulting in larger deformation after quenching, up to about 0.1mm, quenching hardness is not uniform, and even cracking phenomenon. Quenching the cam curve after the more difficult, in order to prevent