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混凝土输送泵车的闸阀是泵车的主要零件之一。该零件承受闸阀换向时频繁的冲击荷载,要求零件有较高的刚度和强度。零件尺寸、形位公差(见附图)要求严格,如何从加工工艺上保证零件的加工质量和提高加工效率,是一个值得重视的问题。该零件的原加工工艺,在零件人工时效后,采用19道工序完成,但质量仍存在如下问题: (1) 2-φ55超差、单边,装配困难
The gate valve of the concrete pump truck is one of the main parts of the pump truck. This part is subjected to frequent impact loads when the gate valve is commutated, requiring parts with high stiffness and strength. Part size, shape and position tolerances (see drawing) are very strict. How to ensure the machining quality of the parts and improve the machining efficiency is a problem worthy of attention. The original processing of this part was completed using 19 steps after the part was artificially time-limited. However, the following problems still exist in quality: (1) 2-φ55 is poor, unilateral, and assembly is difficult.