论文部分内容阅读
图1所示压力机中套是转键离合器的一个重要零件,该零件沿内孔处有三等分半圆孔,靠转键实现皮带轮与曲轴的离合动作,因而有较高的精度,强度、耐磨性等技术要求。其制造质量的好坏,直接关系到压力机的可靠性和操作安全。各生产厂对中套的三半圆孔的制作工艺都很重视。一般所采用的工艺是:环形锻坯～正火一粗、半精车内外圆及两端面(留磨量0.5～0.6毫米)—铣键槽—划三半圆孔线—插三半圆孔、按线留余量2毫米—精车三半圆孔(专用偏心夹具—钳钻φ10孔、倒角—淬火
Press the sleeve shown in Figure 1 is an important part of the key switch clutch, the part along the hole with three equally sub-semi-circular hole, by turning the pulley and crankshaft to achieve clutch action, which has higher accuracy, strength, resistance Grinding and other technical requirements. The quality of its manufacture is good or bad, is directly related to the reliability of the press and operational safety. The manufacturer of the three sets of semi-circular hole in the production process are very seriously. Commonly used process is: ring forging blank ~ normalizing a rough, semi-fine car inside and outside the circle and the two ends (leaving the amount of grinding 0.5 ~ 0.6 mm) - Milling keyway - designated three semi-circular hole line - Leaving a margin of 2 mm - fine car three semi-circular hole (dedicated eccentric clamp - Diao hole drill φ10, chamfer - quenching