Ultra-High Speed Cylindrical Grinding Using CBN Wheel for High Efficiency

Nakayama, Tatsuomi; Wakuda, Manabu; Ota, Masahiro

doi:10.4028/www.scientific.net/kem.257-258.273

Cited by 5 publications

(3 citation statements)

References 2 publications

(4 reference statements)

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“…A Renishaw laser interferometer was used to measure the workpiece table speed v w . A lower workpiece table speed combining with higher grinding wheel speed would generally give better surface [15]. The workpiece table speed was selected as v w =40, 60, 80, 100, and 120mm/s for the study [16].…”

Section: Resultsmentioning

confidence: 99%

Effects of Actively Cooled Coolant for Grinding Ductile Materials

Gao

Lai

2007

KEM

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An active cooling approach for coolant during ductile material grinding is proposed and examined. The aim is to enhance surface quality and to enhance productivity. The problem associated with the cryogenic cooling approach and the one with the chilled air approach are addressed. An active cooling prototype was developed utilizing a compact heat pump design, which is easy to use, movable, and can be easily fitted into different type of machine designs with relatively low costs. The system is based on the use of forced convection of the heat generated during the machining process. Experimental and computational studies of the effects of actively cooled coolant for grinding ductile materials are carried out. The experimental results show that the use of actively cooled coolant is able to improve surface quality by up to 29.95% on average in terms of surface roughness Ra. Computational testing results show that the heat can be taken away more effectively by using the proposed approach. The results of optical and SEM examinations also confirmed that the proposed approach is advantageous.

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Section: Resultsmentioning

confidence: 99%

Effects of Actively Cooled Coolant for Grinding Ductile Materials

Gao

Lai

2007

KEM

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“…To minimize the wear effect of the grinding wheel, dressing was applied before each type of the grinding tests. (Nakayama et al 2004). The workpiece table speed was selected as v w =40, 60, 80, 100, and 120mm/s, respectively, for the study (Gao and Lai 2005).…”

Section: Resultsmentioning

confidence: 99%

Use of actively cooled and activated coolant for surface quality improvement in ductile material grinding

Gao

Lai

2008

IJMPT

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Abstract. An active cooling and activation approach for coolant during ductile material grinding is proposed and examined. The aim is to enhance the surface quality of the workpiece being machined by the grinding process. Problems in the existing cooling approaches, such as activation, cryogenic cooling, and chilled air cooling, are discussed. Experimental and computational studies of the effects of actively cooled and activated coolant for ductile material grinding were conducted. Experimental results show that the proposed approach is able to improve surface quality by up to 36.68% on average in terms of surface roughness R a . In addition, it was found that surface roughness could be reduced if the coolant temperature is reduced. The results of the XRD tests show that the proposed method could, in general, produce low residual stress values. Further studies of this topic are necessary. Results of optical and SEM examinations also confirmed that the proposed approach is advantageous.

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“…In our previous work, we have implemented an ultra-high speed cam grinding machine on automobile production lines [1] [2] and have developed an ultra-high speed contour grinding process [3]. Through our studies to date, we have demonstrated the effectiveness of ultra-high speed grinding in boosting grinding efficiency.…”

Section: Introductionmentioning

confidence: 99%

Ultra-High Speed Grinding Using a CBN Wheel for a Mirror-Like Surface Finish

Ota

Nakayama

Takashima

et al. 2005

KEM

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There are strong demands for a machining process capable of reducing the surface roughness of sliding parts, such as auto parts and other components, with high efficiency. In this work, we attempted to grind hardened steel to a mirror-like surface finish with high efficiency using an ultra-high speed grinding process. In the present study, we examined the effects of the work speed and the grinding wheel grain size in an effort to optimize the grinding conditions for accomplishing mirror-like surface grinding with high efficiency. The results showed that increasing the work speed, while keeping grinding efficiency constant, was effective in reducing the work affected layer and that the grinding force of a #200 CBN wheel was lower than that of a #80 CBN wheel. Based on these results, a high-efficiency grinding step with optimized grinding conditions was selected that achieved excellent ground surface quality with a mirror-like finish.

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Ultra-High Speed Cylindrical Grinding Using CBN Wheel for High Efficiency

Cited by 5 publications

References 2 publications

Effects of Actively Cooled Coolant for Grinding Ductile Materials

Effects of Actively Cooled Coolant for Grinding Ductile Materials

Use of actively cooled and activated coolant for surface quality improvement in ductile material grinding

Ultra-High Speed Grinding Using a CBN Wheel for a Mirror-Like Surface Finish

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