Imaging Analysis of Micro-milling Tool in the Process of Tool Setting Based on Digital Holography

YA-ya, Cheng; Yu, Huadong; Yu, Zhanjiang; Xu, Jinkai; Zhang, Xianghui

doi:10.1109/3m-nano46308.2019.8947379

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The tool setting problem has been intensively investigated [27,28] to improve machining precision. Typical contact-type tool setting methods include on-machine touch probes [28] and force sensors [29,30], whereas examples of non-contact methods include acoustic emission sensors [31], digital microscopes [32], and digital holography [33]. However, studies pertaining to wheel setting for the grinding of aspheric optics are rare.…”

Section: Introductionmentioning

confidence: 99%

Wheel Setting Error Modeling and Compensation for Arc Envelope Grinding of Large-Aperture Aspherical Optics

Sun

Chen

et al. 2022

Chin. J. Mech. Eng.

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Precision grinding is a key process for realizing the use of large-aperture aspherical optical elements in 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 is investigated using a CM1500 precision grinding machine with a maximum machinable diameter of Φ1500 mm. The form error of the aspherical workpiece induced by wheel setting errors is analytically modeled for both parallel and cross grinding. Results show that the form error is 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 the optical axis. Based on the error function above, a method to determine the wheel setting error is proposed. Subsequently, grinding tests are performed with the wheels aligned accurately. Using a newly proposed partial error compensation method with an appropriate compensation factor, a form error of 3.4 μm peak-to-valley (PV) for a Φ400 mm elliptical K9 glass surface is achieved.

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Section: Introductionmentioning

confidence: 99%

Wheel Setting Error Modeling and Compensation for Arc Envelope Grinding of Large-Aperture Aspherical Optics

Sun

Chen

et al. 2022

Chin. J. Mech. Eng.

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A methodology for laser tool setters calibration and its precise mathematical model

FANG,

CHEN

et al. 2024

Chinese Journal of Aeronautics

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Research Progress on Precision Tool Alignment Technology in Machining

Liu,

Jiang,

Xiu

et al. 2024

Micromachines

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In the field of numerical control machining, tool alignment technology is a key link to ensure machining accuracy and quality. Tool alignment refers to determining the correct position of the tool relative to the workpiece, and its accuracy directly affects the precision of part machining. With the development of precision machining technology, the research and application of cutting technology are increasingly valued. Tool alignment methods are mainly divided into two categories: contact and non-contact. The contact type tool alignment method relies on direct contact between the tool and the workpiece or tool alignment instrument to measure the position. Among them, the trial cutting method is a traditional contact type tool alignment method that determines the tool position through actual cutting, which is intuitive but inefficient. The contact type tool presetter uses specialized equipment to improve the accuracy and efficiency of tool presetting through contact measurement. The non-contact tool alignment method does not rely on physical contact, while the image method uses image recognition technology to determine the tool position, making it suitable for high-precision applications. The laser diffraction method and the laser direct method use laser technology for non-contact measurement. The laser diffraction method determines the position of the tool by analyzing the diffraction mode of the laser beam, while the laser direct method directly measures the distance between the laser and the tool. This article mainly introduces the classification of tool alignment, commonly used knife alignment methods and common tool alignment devices, as well as the development status of international tool alignment instrument products.

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Imaging Analysis of Micro-milling Tool in the Process of Tool Setting Based on Digital Holography

Cited by 3 publications

References 9 publications

Wheel Setting Error Modeling and Compensation for Arc Envelope Grinding of Large-Aperture Aspherical Optics

Wheel Setting Error Modeling and Compensation for Arc Envelope Grinding of Large-Aperture Aspherical Optics

A methodology for laser tool setters calibration and its precise mathematical model

Research Progress on Precision Tool Alignment Technology in Machining

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