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膨胀套是为了增加薄壁件的刚性,以减小薄壁件因夹紧力和切削力使其变形引起定位不准.导致薄壁件产生加工误差而设计的一种专用夹具。最初设计的膨胀套结构见图1,采用膨胀套后.加工薄壁件确实减小了爽紧力和切削力对薄壁件变形的影响,保证了薄壁件的加工质量。但由于端盖、加压板和固定板采用同一材料,为了减轻膨胀套的重量,选择能满足加压要求的最薄钢板材料,在加工过程中随着压力的加大,易产生加压螺栓歪斜、端盖发生变形等问题。而这些问题的产生都会使加压板因受力不均产生倾斜,从而使6个方向上的连杆受力不均匀,导致整个工件6
Expansion sleeve is to increase the rigidity of thin-walled parts, in order to reduce the thin-walled parts due to clamping force and cutting force caused by deformation caused by misalignment. Thin-walled parts cause machining error designed a special fixture. The initial design of the expansion sleeve structure shown in Figure 1, the use of expansion sleeve. Processing thin-walled parts really reduce the tightness and cutting force on the deformation of thin-walled parts to ensure the processing quality of thin-walled parts. However, the end cap, the pressure plate and the fixed plate with the same material, in order to reduce the weight of the expansion sleeve, choose to meet the pressure requirements of the thinnest steel material, as the pressure increases during processing, prone to pressure bolts Skew, cover deformation and other issues. And these problems will make the pressure plate tilt due to uneven force, so that the six directions of the connecting rod uneven force, resulting in the entire workpiece 6