Investigation of waviness error in surface grinding of large axisymmetric aspheric lenses

Lin, Xiaohui; Liu, Jianchun; Ke, Xiaolong; Guo, Yinbiao

doi:10.1177/0954405415624638

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…With the development of optical technology, both normal and aspherical optical components have been widely used in optical instruments and optical elements, which made higher requirements for the quality and efficiency of processing optical glass. 1,2,3 The difficulty in controlling the force during the polishing process left numerous scratches and damages on the surface of optical glass. 4 Moreover, improving the surface quality and precision of optical glass could improve the performance of optical components.…”

Section: Introductionmentioning

confidence: 99%

A novel reciprocating cluster magnetorheological polishing device: Design and investigation of removal model

Zhuang

Zhou

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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In the traditional magnetorheological polishing of flat planar elements, there have been problems like low efficiency and uneven surface. To improve the surface quality of optical glass and explore the material removal mechanism, a novel reciprocating cluster magnetorheological polishing (MRP) device was designed with a magnetic field consisting of six curved permanent magnets and one static magnetic finite element for analysis. By analyzing the forces and motion behaviors of single abrasive particles during the polishing process, a novel removal model was developed and the effects of the main parameters on the material removal mechanism were investigated. The experiments ware conducted on the K9 glass through the polishing process by this proposed device and traditional cold working separately. The results showed that reciprocating cluster MRP for 120 min was able to achieve a surface roughness of 2.7 nm, a Peak to Valley (PV) value of 0.689 fr (216 nm) and a Root Mean Square (RMS) value of 0.077 fr (24 nm), respectively, which made a significant improvement on the conventional cold working. Therefore, the proposed device and novel polishing process could effectively reduce the surface roughness value and the PV value of K9 glass, while improving both the polishing efficiency and accuracy of optical components.

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Section: Introductionmentioning

confidence: 99%

A novel reciprocating cluster magnetorheological polishing device: Design and investigation of removal model

Zhuang

Zhou

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…In ultra-precision turning, the periodic characteristics of the surface waviness error are closely related to the vibration frequency of the tool and the workpiece [26,27]. Similarly, the surface waviness error is related to the rotation frequency of the workpiece and the grinding wheel in ultra-precision grinding process [28]. Therefore, the ratio of the grinding wheel's rotation speed to the workpiece's rotation speed is closely related to the generation of the surface waviness error of the ground workpiece, which is defined as the rotation speed ratio (RSR) [29].…”

Section: Introductionmentioning

confidence: 99%

Suppression of Surface Waviness Error of Fresnel Micro-Structured Mold by Using Non-Integer Rotation Speed Ratio in Parallel Grinding Process

et al. 2020

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Fresnel micro-structured lenses are widely used in the field of modern optoelectronic technology. High-precision Fresnel micro-structured mold is the key technology to achieve its large-scale replication production. Focusing on the surface waviness error of Fresnel micro-structured mold machined by parallel grinding process, this paper conducted theoretical modeling and experiment research. Based on the grinding kinematics theory, the simulation models of the surface waviness topography and the circular waviness profiles of the ground Fresnel micro-structured mold were developed, considering the combined influence of the non-integer rotation speed ratio and other grinding parameters. A series of grinding experiments were carried out to verify the proposed simulation models. The influence of a non-integer rotation speed ratio and a wave-shift value upon the surface waviness error of the ground Fresnel micro-structured molds were analyzed. Both the simulation and experimental results proved that choosing the non-integer rotation speed ratio and a proper wave-shift value could greatly reduce the surface waviness error and improve the surface quality and uniformity.

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“…A 3D model of abrasive wear based on the multi-roughness value of a real rough surface was used to analyse the influence of the local geometric shape of the abrasive particles on the friction coefficient and wear rate. 15 Lin et al 16 analysed the waviness error of large axisymmetric aspheric lenses for X -axis direction as well as Z -axis direction by employing grate parallel grinding method, and the grinding wheel vibration and Z -axis interpolation pace are regarded as the main causes of the surface waviness error. Warnecke and Barth 17 used the finite element method to optimise the dynamic characteristics of grinding wheels during the grinding of hard and brittle materials.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibration from low-rigidity contact in belt grinding of blisk blade

Xiao

Huang

Liu

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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A blisk is one of the key parts of an aero-engine, whose surface processing quality directly affects aero-engine performance. Different degrees of vibration occur during the process of new open belt grinding which seriously affect the precision of the dimensions and the surface quality of the entire blade profile. With the aim of addressing this problem, this study constructed a physical model of blisk belt grinding, analysed the low-rigidity characteristics of the grinding system, and researched the vibratory mechanism of the blisk belt grinding system based on a dynamic analysis method. In addition, the factors affecting the stability of the grinding process and the stability conditions of the grinding were considered. Then, the belt grinding process of a blade surface was simulated through a numerical method. The technological parameters were quantified for different conditions of the blisk belt grinding vibration. The optimal combination of process parameters was obtained. Finally, the optimised process parameters were validated experimentally. The research demonstrates that vibration from blisk belt grinding is related to the process parameters as follows, in the order of the greatest influence: the grinding pressure, belt velocity, feed speed, and contact wheel hardness. After optimisation, the cross-sectional profile is 0.031–0.041 mm and the surface roughness is 0.1–0.2 μm; the surface is smoother and has better consistency.

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Investigation of waviness error in surface grinding of large axisymmetric aspheric lenses

Cited by 11 publications

References 16 publications

A novel reciprocating cluster magnetorheological polishing device: Design and investigation of removal model

A novel reciprocating cluster magnetorheological polishing device: Design and investigation of removal model

Suppression of Surface Waviness Error of Fresnel Micro-Structured Mold by Using Non-Integer Rotation Speed Ratio in Parallel Grinding Process

Analysis of vibration from low-rigidity contact in belt grinding of blisk blade

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