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制作一批各种厚度(0.381～1.588毫米)的不锈钢垫圈,要求精确地车削外圆和镗削内孔。首先将坯料加工成直径φ28.575毫米的圆片。如图所示,第一步:取一根尺寸合适的厚壁圆筒管(其内孔与垫圈粗加工外圆相配),将粗加工外圆的垫圈迭合在一起,装入圆筒管内,从轴向压紧工件,并将圆筒管夹持在车床的三爪卡盘上,钻、铰垫圈内孔至φ12.75毫米。第二步:精确地加上一根直径为φ12.7毫米的螺栓(装垫圈处为光圆),两端钻中心孔,滑移装入第一步夹具(圆筒管),穿过已加工内孔的垫圈,上紧螺母,然后将其从第一步夹具中取出来,顶紧在车床两顶
Produce a range of stainless steel washers of various thicknesses (0.381 to 1.588 mm), requiring accurate turning of cylindrical and boring boreholes. First, the blank is processed into a wafer with a diameter of φ28.575 mm. As shown in the figure, the first step: take a suitable size of thick-walled cylindrical tube (the bore and the washer rough match outer circle), the rough outer cylindrical washers together, into the cylindrical tube , The workpiece is pressed from the axial direction, and the cylindrical tube is clamped on the three-jaw chuck of the lathe, drilled and hinged washer bore to φ12.75 mm. Step 2: Add a bolt with a diameter of φ12.7 mm (with a circle of light at the washer) exactly, drill the center hole at both ends and slide it into the first clamp (cylindrical tube) Processing of the hole washers, tighten the nut, and then remove it from the first fixture, the top tight in the lathe top