Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Vibration Mode and Durability Characteristics of Automotive IDS using Rotary Swaging Process for Incremental Forming

로터리 스웨이징 공정의 점진성형에 의한 중공 드라이브샤프트의 진동모드 및 내구특성

  • Lim Seong-Joo (Department of Advanced Precision Engineering, Inha University) ;
  • Lee Nak-Kyu (Digital Production Processing Team, KITTECH) ;
  • Lee Chi-Hwan (Department of Material Science and Engineering, Inha University)
  • 임성주 (인하대학교 대학원 첨단정밀공학과) ;
  • 이낙규 (한국생산기술연구원 디지털생산공정팀) ;
  • 이지환 (인하대학교 금속공학과)
  • Published : 2005.09.01
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Abstract

Rotary swaging is one of the incremental forming process which is a chipless process using the reduction of cross-sections of bars, tubes and wires. The TDS(Tube Drive Shaft) of monobloc used in automotive has been developed by the rotary swaging process. The mechanical characteristics of swaged parts such as the hardness, thickness and roughness are also estimated to conduct experimental analyses of rotary swaging process with the materials of 34Mn5 Furthermore the change in the vibration mode of TDS due to design parameters, which are the tube length, diameter and thickness, has been investigated and analysed. The weight of the TDS product is smaller by about $12.8\%$ than that of SDS with the same performance. It could be evidently found that the TDS is designed to be much lighter than SDS (Solid Drive Shaft). This advantage might give some possibility to improve the NVH (Noise-Vibration-Harshness) characteristics. A maximum torque and a total number of torsional repetitions for the TDS is checked and measured to know the torsional intensity and fatigue strength through the static torsion test and torsional durability test, respectively. A total number of the torsional repetitions up to the fracture for the TDS is greater than 250,000 times.

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References

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