An analytical model of chip heat-carrying capacity for high-speed dry hobbing based on 3D chip geometry

High-speed dry hobbing is the dominating green technique for gear hobbing owing to its high productivity and environmental friendliness. However, a large amount of cutting heat is generated during the machining process due to the absence of metalworking fluids and the adoption of high cutting speed....

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Bibliographic Details
Published in:International journal of precision engineering and manufacturing 2017-02, Vol.18 (2), p.245-256
Main Authors: Yang, Xiao, Cao, Hua-jun, Chen, Yong-peng, Zhu, Li-Bin, Li, Ben-jie
Format: Article
Language:English
Subjects:
Carrying capacity
Cutting energy
Cutting parameters
Cutting speed
Engineering
Gear hobbing
Geometry
Heat generation
Heat sources
High speed
Industrial and Production Engineering
Kinematics
Machining
Materials Science
Metalworking fluids
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Summary:High-speed dry hobbing is the dominating green technique for gear hobbing owing to its high productivity and environmental friendliness. However, a large amount of cutting heat is generated during the machining process due to the absence of metalworking fluids and the adoption of high cutting speed. A better understanding of chip heat-carrying capacity for high-speed dry hobbing is quite necessary when aiming to reduce the influence of cutting heat on machining precision. In this paper, an analytical model is established to quantitatively determine the chip heat-carrying capacity of high-speed dry hobbing. According to the progressive heat transfer characteristic of high-speed dry hobbing, cutting heat generation and transmission are analyzed. 3D chip geometry is numerically calculated by modeling the complex hob geometry and the interrelated kinematic relations of high-speed dry hobbing. Based on the 3D chip geometry and the specific cutting energy, chip heat-carrying capacity model is developed considering three heat sources. In this model, chip heat partition is experimentally determined by calorimetric method. With the help of the developed model, chip heat-carrying quantity and chip heat-carrying efficiency are discussed by investigating their influence factors (hob rotation speed, axial feed, feed method, chip removal time and hob geometry).
ISSN:2234-7593
2005-4602
DOI:10.1007/s12541-017-0032-5