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Original Article
Changsheng Li
Xi’an Jiaotong University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-4119-5823
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Precision grinding is the key process to meet the heavy demands of large-aperture aspherical optical elements in the fields of laser nuclear fusion devices, large-aperture astronomical telescopes and high-resolution space cameras. In this study, the arc envelope grinding process of large-aperture aspherical optics was investigated using the CM1500 precision grinding machine with a maximum machinable diameter of Φ1500 mm. The analytical form error models of aspherical workpiece induced by wheel setting errors were established for both parallel grinding and cross grinding. Result show that the form error is much more sensitive to the wheel setting error along the feed direction than that along the lateral direction. It is a bilinear function of the feed-direction wheel setting error and the distance to optical axis. Based on the above analysis, a method to determine the wheel setting error is proposed. The grinding tests were then performed with the wheel accurately aligned. By using a newly proposed partial error compensation method with an appropriate compensation factor, a form error of 3.4 µm PV for a Φ400 mm elliptical K9 glass surface was achieved.
Keywords
aspherical optics, large-aperture optics, wheel setting, arc envelope grinding, form error
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Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 11 Jan, 2021
No community comments so far
Editorial decision: Minor revision
On 31 May, 2021
Review #2 received
Received 19 Feb, 2021
Review #1 received
Received 18 Feb, 2021
Reviewer #2 agreed
On 11 Feb, 2021
Reviewer #1 agreed
On 08 Feb, 2021
Reviewers invited
Invitations sent on 07 Feb, 2021
Editor assigned
On 04 Jan, 2021
Submission checks complete
On 04 Jan, 2021
Editor invited
On 04 Jan, 2021
First submitted
On 03 Jan, 2021
Metrics
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PDF Downloads: ...
HTML Views: ...
Subject Areas
Mechanical Engineering
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A new preprint design is coming!
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This preprint is under consideration at Chinese Journal of Mechanical Engineering. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Original Article
Changsheng Li
Xi’an Jiaotong University
Corresponding Author
ORCiD: https://orcid.org/0000-0002-4119-5823
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 11 Jan, 2021
No community comments so far
Editorial decision: Minor revision
On 31 May, 2021
Review #2 received
Received 19 Feb, 2021
Review #1 received
Received 18 Feb, 2021
Reviewer #2 agreed
On 11 Feb, 2021
Reviewer #1 agreed
On 08 Feb, 2021
Reviewers invited
Invitations sent on 07 Feb, 2021
Editor assigned
On 04 Jan, 2021
Submission checks complete
On 04 Jan, 2021
Editor invited
On 04 Jan, 2021
First submitted
On 03 Jan, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Mechanical Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Precision grinding is the key process to meet the heavy demands of large-aperture aspherical optical elements in the fields of laser nuclear fusion devices, large-aperture astronomical telescopes and high-resolution space cameras. In this study, the arc envelope grinding process of large-aperture aspherical optics was investigated using the CM1500 precision grinding machine with a maximum machinable diameter of Φ1500 mm. The analytical form error models of aspherical workpiece induced by wheel setting errors were established for both parallel grinding and cross grinding. Result show that the form error is much more sensitive to the wheel setting error along the feed direction than that along the lateral direction. It is a bilinear function of the feed-direction wheel setting error and the distance to optical axis. Based on the above analysis, a method to determine the wheel setting error is proposed. The grinding tests were then performed with the wheel accurately aligned. By using a newly proposed partial error compensation method with an appropriate compensation factor, a form error of 3.4 µm PV for a Φ400 mm elliptical K9 glass surface was achieved.
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Figure 2
Figure 3
Figure 4
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Figure 10
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Figure 12
Figure 13
Figure 14
Figure 15
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