锻压技术

采煤机截齿刀体温挤压精密成形力学模型定量解析

英文标题：Quantitive analysis of warm extruding precision forming mechanics model for cutting pick body of coal excavator

作者：苏春建杜秀科

关键词：采煤机截齿温挤压精密成形挤压力

分类号：TD42;TG376

出版年,卷(期):页码：2010,35(2):89-93

摘要：

采煤机截齿是一种用量极大的消耗性采煤工具。其刀体的传统生产工艺是铸造,或粗锻后切削加工,或直接用棒料切削加工,前者产品性能差,后两者材料利用率低,生产成本高。本文所述采煤机截齿刀体温挤压精密成形技术完全克服了上述缺点。从分析采煤机截齿刀体温挤压成形特点入手,采用功平衡原理求解变形力的近似解,推导出采煤机截齿刀体温挤压力的近似计算公式。从理论上确定了挤压力的主要影响因素及其变化规律,为该项新工艺的模具设计和设备选择提供了理论依据。

Cutting pick is a kind of widely-used consumptive mining tool.The traditional producing technics of cutting pick body is foundry,or machining after roughly forging,or machining directly from metal bar.By former technics,the property of products is poor,and by the latter,the material availability is low and the cost is high.The patent technology for cutting pick body warm extrusion introduced can overcome all the disadvantages mentioned above.By analyzing the characteristic of cutting pick body warm extrusion,adopting the principle of power balance to solve the strain forces the approximate solution,the approximate calculating formulas of extruding power were deduced.The main factors affecting on extruding power were determined.This research can provide a theory busis for signing mould and choosing proper equipment for this new technology.

基金项目：

山东科技大学春蕾计划项目(2009AZZ022)

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