Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (7): 980-985.DOI: 10.12068/j.issn.1005-3026.2019.07.013

• Mechanical Engineering • Previous Articles     Next Articles

Prediction of Cutting Forces in Gear Hobbing of Cylindrical Gears

ZHANG Rong-chuang1, LI Bai-chun2, ZHANG Jing-qiang3   

  1. 1. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; 2. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 3. School of Mechatronics Engineering, Shenyang Aerospace University, Shenyang 110136, China.
  • Received:2018-06-29 Revised:2018-06-29 Online:2019-07-15 Published:2019-07-16
  • Contact: ZHANG Rong-chuang
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Abstract: The cutting forces involved during gear hobbing play an important role in process parameter optimization, hob wear prediction and hobbing machine design. The geometrical simulation of the gear hobbing process based on solid modelling was realized. Solid chips were extracted accurately and undeformed chip thickness was calculated. To model the hobbing process, the tool cutting edge was divided into small differential cutting edge segments. The cutting forces exerted on each cutting edge element were calculated based on Kienzle-Victor′s equations and the total force components acting on the hob were obtained by integrating the elementary force components. To validate the predictive model of gear cutting forces, the experiments were carried out in DMU50 five-axis CNC machining center equipped with a Kistler 9123C rotary dynamometer. The simulation results are compared with the experiments. The cutting process is well captured by the predictive model, and good correlations in cutting forces are observed between the predictions and experiments.

Key words: gear hobbing, cutting force, solid modelling, undeformed chip thickness, geometrical simulation

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