Determination of waviness decrease rate by measuring the frequency characteristics of the grinding force in centerless grinding

Wu, Yongbo; Wang, Jun; Fan, Yufeng; Kato, Masashi

doi:10.1016/j.jmatprotec.2004.11.021

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…The values of E c and E r decrease with the increasing of ˛ at beginning, and then switch to increase after the E c and E r reach their valley value of 2.53 m and 1.01 m at ˛ = 6 • . This tendency is similar with that in our previously proposed in-feed centerless grinding operation (Xu and Wu, 2011), relating to a major effect of eccentric angle ˛ on the waviness decrease rate of workpiece profile (Wu et al, 2005b): the waviness with higher frequency is easily eliminated from the initial workpiece profile under a smaller value of ˛ such as 2 • or 4 • (see Fig. 9(a) and (b)); the waviness with lower frequency is easily eliminated under a larger value of such as 8 • or 10 • (see Fig.…”

Section: Resultssupporting

confidence: 90%

A new through-feed centerless grinding technique using a surface grinder

2011

Journal of Materials Processing Technology

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Section: Resultssupporting

confidence: 90%

A new through-feed centerless grinding technique using a surface grinder

2011

Journal of Materials Processing Technology

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“…Bianchi et al [ 14 ] considered the influence of nonlinear separation of wheel-workpiece detachment under three-lobe profiles on the stability of the centerless grinding process. Wu et al [ 15 ] analyzed the relationship between the waviness decrease rate and the dynamic components of the grinding force in the centerless grinding process and found that the frequency characteristics of the waviness decrease rate showed a similar tendency to those of the grinding force. Klocke et al [ 16 ] found that the interaction between the cutting process and the main resonance of the machine structure would cause the workpiece center to oscillate, resulting in irregular material removal, thus increasing the workpiece waviness.…”

Section: Introductionmentioning

confidence: 99%

Profile Evolution and Cross-Process Collaboration Strategy of Bearing Raceway by Centerless Grinding and Electrochemical Mechanical Machining

Yan

Fan

et al. 2022

Micromachines

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Roundness is one of the most important evaluation indexes of rotary parts. The formation and change of roundness in the machining of parts is essentially the formation and genetic process of profile. Centerless positioning machining is one of the main surface finishing methods of rotary parts. The rounding mechanism of centerless positioning machining determines its unique roundness profile formation and genetic characteristics. How to eliminate the roundness error of centerless positioning machining has become one of the important issues in the research of high-precision rotary part machining. This paper explores the influence of process parameters on the roundness error from the perspective of profile evolution during centerless grinding and electrochemical mechanical machining, with the aim of providing a cross-process collaboration strategy for improving bearing raceway accuracy. Through an experiment of centerless grinding, the influence law and mechanism of process parameters on the profile are discussed. On this basis, electrochemical mechanical machining experiments are designed to explore the variation rules and mechanisms of different profile shapes in the machining process. The cross-process collaboration strategy is studied, and reasonable parameters of centerless grinding and electrochemical mechanical machining are determined. The results show that in the centerless grinding stage, increasing the support plate angle can form a multiple-lobe profile with high frequency within a wide range of process parameters. Electrochemical mechanical machining can effectively smooth the high-frequency profile and appropriately expanding the cathode coverage can improve the roundness error and reduce the requirement of initial accuracy of a multiple-lobe profile workpiece to a certain extent. Therefore, the combined machining technology of “centerless grinding + electrochemical mechanical machining” provides an efficient technical means to realize the precision machining of rotary parts such as bearing raceways.

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“…The configuration of the CGP is complex and has a high sensitivity to the grinding gap set-up and process parameters [4] to [7]. Moreover, productivity depends on the process stability.…”

Section: Introductionmentioning

confidence: 99%