Tool path generation for grinding a 1.45 m off-axis aspherical SiC mirror blank

	Tool path generation for grinding a 1.45 m off-axis aspherical SiC mirror blank
	Zhang Z.
	2014
发表期刊	中文 Optics Letters
ISSN	ISBN/16717694
卷号	12
摘要	Off-axis aspherical mirrors are growing in popularity in modern space-borne cameras having high resolutionand large field of view. Fabrication processes for these mirrors include surface generation by grinding wheel, free-abrasive lapping, and various polishing cycles. Surface generation by grinding wheel is the most efficient process among the whole fabrication processes. Therefore, technologies for accurately and cost efficiently generating the mirror blanks are highly indispensable. We propose, a single-point grinding mode and a four-step tool path generation technology to resolve the over travel problem, for directly machining the off-axis aspherical mirror blank. Technologies for surface geometrical modeling and wheel wear reduction/compensationare established. Using a commercial-available HASS-VF8 machining center, a silicon carbide mirror blank having a 1.45 m aperture is successfully generated. Result indicates that the main error source affecting the obtained grinding accuracy is wheel wear amount, other than the positioning accuracy of machining center. Therefore, error-compensation grinding is indispensable. We provide an alternative economical resolution to efficiently fabricate the large-scale off-axis aspherical surface.
收录类别	EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44476
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang Z.. Tool path generation for grinding a 1.45 m off-axis aspherical SiC mirror blank[J]. 中文 Optics Letters,2014,12.
APA	Zhang Z..(2014).Tool path generation for grinding a 1.45 m off-axis aspherical SiC mirror blank.中文 Optics Letters,12.
MLA	Zhang Z.."Tool path generation for grinding a 1.45 m off-axis aspherical SiC mirror blank".中文 Optics Letters 12(2014).

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