Nonaxisymmetric Aspheric Ceramic Mirror Machining Using Arc Envelope Grinding Method.

Kuriyagawa, Tsunemoto; Tachibana, Toru; Syoji, Katsuo; Mori, Yukio

doi:10.1299/kikaic.63.2532

Cited by 12 publications

(7 citation statements)

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“…The curved surface has the features of an axisymmetric structure. To achieve precise trajectory envelope grinding of revolving curved surface, the working surface of an ordinary grinding wheel is trued to arc revolving surface so as to avoid geometric interference between the grinding wheel and the workpiece [4]. The machining method has the biggest advantages: with the change of grinding position of curved surface, the grinding point on the arc surface of grinding wheel is moving; the grinding doesn't need the fixed point any longer, so more abrasive partices on the grinding wheel can participate in cutting, and the partial wear of grinding wheel can be reduced and the service life of the grinding wheel can be improved.…”

Section: Arc Envelope Grinding Methods (Aegm) For Axisymmetric Revolvimentioning

confidence: 99%

Study on Arc Envelope Grinding Process of Revolving Curved Surface

Kong¹,

Yan²,

Yongliang³

et al. 2016

Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnolog

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To meet the precision machining needs of axisymmetric revolving curved surface, the arc envelope grinding technology for curved surface is studied so as to make a breakthrough in the current process. The particularity of arc envelope grinding of curved surface is analyzed. Through the analysis of the forming process of grinding curved surface, the geometric model of the grinding wheel interfering with the workpiece during the arc envelope grinding is established. Through the analysis of the moving distance of grinding point, the relationship between the effective moving distance, the radius of arc of grinding wheel, and the curvature radius of workpiece is established. It is optimized and analyzed that the grinding point on the surface of grinding wheel has the maximum motion quantity to improve the wear resistance of grinding wheel. Based on the calculation of curvature of machined curved surface, the change in feeding rate can be adjusted to ensure the uniform surface roughness of the curved surface. It provides a theoretical basis for the practical application of Arc Envelope Grinding Method (AEGM) for curved surface.

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Section: Arc Envelope Grinding Methods (Aegm) For Axisymmetric Revolvimentioning

confidence: 99%

Study on Arc Envelope Grinding Process of Revolving Curved Surface

Kong¹,

Yan²,

Yongliang³

et al. 2016

Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnolog

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“…Physically, a workpiece surface was generated along the envelope of the moving wheel periphery. An arc-enveloping grinding method have been developed by K. Syoji et al [2][3][4]. On the other hand, H. Ohmori proposed ELID-grinding technique [5][6] and applied the technique to fabricate large optical elements [7].…”

Section: Introductionmentioning

confidence: 99%

Ultraprecision fabrication of large stamping die of Wolter mirror for an x-ray telescope by ELID grinding

Yin

Ohmori

Uehara

et al. 2009

4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technolo

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This paper presents a ultra-precision manufacturing process of large stamping dies with confocal paraboloidal and hyperboloidal surfaces of Wolter mirror for an X-ray telescope. In order to improve the alignment of the two substrates and reduce the degeneration in imaging quality, two compound reflectors were formed from one thin substrate utilizing synthetic ELID grinding and arc-enveloped grinding method. Because the thin foil substrate was obtained by press forming, large stamping dies of foil substrate must be machined with high Fig. error and low roughness. In this ELID arc-enveloped grinding system, cast iron fiber bonded (CIFB) diamond wheels were 3-dimentional controlled to scan the workpiece and generate required surfaces. Through truing grinding wheel and ELID grinding for upper concave and lower convex stamping dies, attainable form accuracy, surface roughness were investigated.

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“…To solve this problem, Kuriyagawa, etc. have proposed Arc Envelope Grinding Method (AEGM) and have made good results in machining the ceramic axisymmetric and nonaxisymmetric aspheric surface with diamond grinding wheel [3][4][5]. On this foundation, this method was employed by domestic researchers in grinding free-form surfaces [6,7].…”

Section: Introductionmentioning

confidence: 99%

Research on Uniform Surface Roughness in Grinding of Revolving Curved Surface

Kong¹,

Yan

Song

et al. 2009

KEM

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When grinding the revolving curved surface with Arc Envelope Grinding Method, the different curvatures in the convex and concave surfaces make a great difference in the surface roughness. In order to solve this problem, the relationship among envelope height, feeding rate, rotational speed and curvature of workpiece was analyzed based on equal-envelope-height grinding method. The results presented that, low feeding rate of grinding wheel and high rotational speed of workpiece were helpful to obtain smaller envelope height. And the smaller the radius of workpiece curvature, the more different the surface roughness. Besides, it was an effective method to solve this problem by changing feeding rate. The feeding rate should be changed directly proportionally to radius of workpiece curvature. Then, the experimental results indicate that, the fluctuation ratio of surface roughness with variable feeding rate is reduced to 4.896% from 26.17% with constant feeding rate. It proves the validity of hypothesis.

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Nonaxisymmetric Aspheric Ceramic Mirror Machining Using Arc Envelope Grinding Method.

Cited by 12 publications

References 0 publications

Study on Arc Envelope Grinding Process of Revolving Curved Surface

Study on Arc Envelope Grinding Process of Revolving Curved Surface

Ultraprecision fabrication of large stamping die of Wolter mirror for an x-ray telescope by ELID grinding

Research on Uniform Surface Roughness in Grinding of Revolving Curved Surface

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