高速干切滚齿工艺系统切削热全过程传递模型

发布时间：2019-05-08 16:28

【摘要】：高速干切滚齿工艺消除了切削油/液的使用,是一种绿色高效的齿轮制造工艺。切削热伴随着高速干切滚齿工艺全过程且区别于传统湿式滚切工艺,是造成干切滚刀磨损和机床热变形的重要因素,直接影响制造成本和加工精度。根据干切滚刀周期性断续传热特性,综合考虑切削热在切屑、工件、干切滚刀、冷却介质以及滚齿机床加工空间的传递规律,提出将高速干切滚齿工艺系统切削热的发生与传递全过程划分为三个阶段的研究思想,从关系模型和热传递方程两个层面建立了高速干切滚齿工艺系统切削热全过程传热模型,包括切削接触界面热传递、切削区域热传递和机床加工空间热传递三个阶段的模型,然后基于工艺仿真试验对所建模型进行了应用研究,揭示了高速干切滚齿工艺系统的切削热在工件、干切滚刀、切屑中的动态变化规律,最后通过试验验证了模型的有效性。
[Abstract]:High-speed dry-cutting gear hobbing technology eliminates the use of cutting oil / fluid and is a green and efficient gear manufacturing process. The cutting heat is associated with the whole process of high-speed dry-cutting hobbing technology and is different from the traditional wet hobbing technology. It is an important factor causing the wear of dry-cutting hob and the thermal deformation of the machine tool, which directly affects the manufacturing cost and machining precision. According to the periodic intermittent heat transfer characteristics of dry cutting hob, the transfer law of cutting heat in chip, workpiece, dry cutting hob, cooling medium and machining space of hobbing machine is considered comprehensively. The research idea of dividing the whole process of heat generation and transfer in high speed dry cutting hobbing technology system into three stages is put forward. The heat transfer model of high speed dry cutting hobbing technology system is established from the two aspects of relation model and heat transfer equation. The model includes three stages: the heat transfer of the cutting contact interface, the heat transfer of the cutting area and the heat transfer of the machining space of the machine tool. Then, the application of the model is studied based on the simulation experiment of the process. The dynamic variation of cutting heat in workpiece, dry-cutting hob and chip of high-speed dry-cutting hobbing system is revealed. Finally, the validity of the model is verified by experiments.
【作者单位】：重庆大学机械传动国家重点实验室;
【基金】：国家高技术研究发展计划(863计划,2012AA040107) 国家自然科学基金(51475058) 教育部新世纪优秀人才支持计划(NCET-13-0628)资助项目
【分类号】：TG612

【参考文献】