错齿BTA深孔钻削切屑变形断裂影响因素研究

中国机械工程

错齿BTA深孔钻削切屑变形断裂影响因素研究

李旭波;郑建明;孔令飞;肖世英;刘驰;郭便

西安理工大学机械与精密仪器工程学院，西安，710048

出版日期:2018-08-25 发布日期:2018-08-27
基金资助:
国家科技重大专项（2013ZX04009011）；
国家自然科学基金资助项目（51475367）
National Science and Technology Major Project（No. 2013ZX04009011）
National Natural Science Foundation of China （No. 51475367）

Study on Influence Factors of Chip Deformation and Breaking for Staggered Teeth BTA Deep Hole Drilling

LI Xubo;ZHENG Jianming;KONG Lingfei;XIAO Shiying;LIU Chi;GUO Bian

School of Mechanical and Precision Instrument Engineering，Xi'an University of Technology，Xi'an，710048

Online:2018-08-25 Published:2018-08-27
Supported by:
National Science and Technology Major Project（No. 2013ZX04009011）
National Natural Science Foundation of China （No. 51475367）

摘要/Abstract

摘要： 利用错齿BTA深孔钻削切屑弯曲变形规律，对导致错齿BTA内排屑深孔钻切屑断裂的影响因素进行了分析，通过试验研究了错齿BTA深孔钻削切屑的变形断裂随刀齿钻削半径、钻削工艺参数、断屑台尺寸的变化规律。研究结果表明，刀齿钻削半径对切屑厚度影响很大，随钻削半径的增大，各刀齿切屑厚度增大，切屑厚度最大值点均位于刀齿切屑大径边缘且中心齿、中间齿、外齿的切屑厚度最大值依次减小；与转速相比，进给量对切屑厚度和切屑应变增量的影响更大，随进给量增大，切屑厚度增大,切屑应变增量增大；随断屑台宽度减小、高度增大，切屑应变增量增大，断屑条件改善。

关键词: 深孔钻, 错齿BTA钻头, 切屑断裂, 切屑厚度, 断屑台

Abstract: The influence factors on chip breaking were analyzed by using the chip bending deformation rules of staggered teeth BTA deep hole drilling. The varation rules of deformations and breaking along with drilling radius， drilling process parameters and chip breaker dimension parameters were studied. The results show that the drilling radius has a great influence on the chip thickness. With the drilling radius increasing, the chip thickness increases.The maximum chip thickness is located on the teeth periphery， and the external tooth chip thickness is the smallest. Compared with drilling speed， drilling feed has a greater impact on the chip deformation and breaking. With the increases of the feed， chip thickness increases， chip strain increases. As the chip-breaker width decreases and the height increases， the chip strain increases and the chip breaking conditions improve.

Key words: deep hole drilling； staggered teeth BTA（boring and , trepanning association） drill； chip breaking； chip thickness； , chip-breaker

中图分类号:

TG713.1

李旭波;郑建明;孔令飞;肖世英;刘驰;郭便. 错齿BTA深孔钻削切屑变形断裂影响因素研究[J]. 中国机械工程.

LI Xubo;ZHENG Jianming;KONG Lingfei;XIAO Shiying;LIU Chi;GUO Bian. Study on Influence Factors of Chip Deformation and Breaking for Staggered Teeth BTA Deep Hole Drilling[J]. China Mechanical Engineering.

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