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Calculation of negative-pressure chip in suction-type internal chip removal system and analysis of influencing factors

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Abstract

In order to automatically recover chips during the drilling process of carbon fiber reinforced polymer (CFRP), a new chip removal system of drilling processing, the suction-type internal chip removal system, has been put forward. The developed system can effectively recover chips produced in the drilling processing, which helps realize the green production. For this, at first, a method for solving the negative pressure value of the drilling of the suction-type internal chip removal system is given based on the calculation of suspension velocity of particles in gas-solid two-phase fluid mechanics. Secondly, the influence of inner-chip-removal drilling bit chip removal channel structure on the chip removal system performance is analyzed by FLUENT simulation. Finally, the correctness of the above theoretical analysis and simulation is verified through experiments, and the influence of drill speed and feed ratio on the performance of the system is further analyzed.

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Funding

This work is financially supported by The National Natural Science Fund under the Project 51475127.

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Authors and Affiliations

  1. School of Mechanical Engineering, Harbin University of Science and Technology, Harbin, 150080, China

    Chenyang Xu, Wang Yiwen & Liu Xianli

  2. School of Automation, Harbin University of Science and Technology, Harbin, 150080, China

    Xu Jiazhong

Authors
  1. Chenyang Xu
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  2. Wang Yiwen
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  3. Xu Jiazhong
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  4. Liu Xianli
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Correspondence to Chenyang Xu.

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Xu, C., Yiwen, W., Jiazhong, X. et al. Calculation of negative-pressure chip in suction-type internal chip removal system and analysis of influencing factors. Int J Adv Manuf Technol 99, 201–209 (2018). https://doi.org/10.1007/s00170-018-2443-6

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  • DOI: https://doi.org/10.1007/s00170-018-2443-6

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