An image-based algorithm for generating smooth and interference-free five-axis sweep scanning path

Barrel-shaped surfaces are widely used in industries, e.g., blades, vases, and tabular parts. Because a part such as an aero-engine blade is typically quite large, the efficiency of its measurement becomes a critical issue. The recently emerged five-axis sweep scanning technology offers to be a powerful means to significantly increase the efficiency of measurement. However, currently it still mostly relies on humans to manually plan a five-axis sweep scanning path, and in most cases, the surface is simply divided into a number of smaller open patches for which the sweep scanning is then individually planned. We present an algorithm for automatically planning the five-axis sweep scanning for an arbitrary barrel-shaped surface in the form of either a compound, a trimmed, or a simple surface. The planning algorithm is novel in that no partitioning of the surface is needed and a single continuous five-axis sweep scanning path will be generated for the entire surface. By eliminating the nonsweeping time spent by the stylus due to its air-moves between multiple patches and also the time-costly approach-retraction operations required for each patch, the proposed algorithm is able to significantly reduce the total inspection time, sometimes more than 50%, as validated in our physical inspection experiments.

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Automatic generation of efficient and interference-free five-axis scanning path for free-form surface inspection

Computer-Aided Design ◽

10.1016/j.cad.2018.01.001 ◽

2018 ◽

Vol 98 ◽

pp. 24-38 ◽

Cited By ~ 4

Author(s):

Pengcheng Hu ◽

Huicheng Zhou ◽

Jihong Chen ◽

Chenhan Lee ◽

Kai Tang ◽

...

Keyword(s):

Automatic Generation ◽

Free Form ◽

Surface Inspection ◽

Scanning Path ◽

Free Form Surface ◽

Five Axis

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Interactive multiple area spectrum integration (MASI)

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100172449 ◽

1994 ◽

Vol 52 ◽

pp. 942-943

Author(s):

John A. Hunt ◽

Richard D. Leapman ◽

David B. Williams

Keyword(s):

Image Processing ◽

Low Dose ◽

Routine Analysis ◽

Reference Image ◽

Area Spectrum ◽

List Type ◽

Type Number ◽

Image Processor ◽

X Ray ◽

Scanning Path

Interactive MASI involves controlling the raster of a STEM or SEM probe to areas predefined byan integration mask which is formed by image processing, drawing or selecting regions manually. EELS, x-ray, or other spectra are then acquired while the probe is scanning over the areas defined by the integration mask. The technique has several advantages: (1) Low-dose spectra can be acquired by averaging the dose over a great many similar features. (2) MASI can eliminate the risks of spatial under- or over-sampling of multiple, complicated, and irregularly shaped objects. (3) MASI is an extremely rapid and convenient way to record spectra for routine analysis. The technique is performed as follows:Acquire reference imageOptionally blank beam for beam-sensitive specimensUse image processor to select integration mask from reference imageCalculate scanning path for probeUnblank probe (if blanked)Correct for specimen drift since reference image acquisition

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The new CM-Series TEMs: integration of a five-axis motorized, fully computer-controlled goniometer

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100147132 ◽

1993 ◽

Vol 51 ◽

pp. 258-259

Author(s):

Marc J.C. de Jong ◽

P. Emile S.J. Asselbergs ◽

Max T. Otten

Keyword(s):

Mechanical Design ◽

Computer Control ◽

Objective Lens ◽

Access Port ◽

Vibration Stability ◽

Transmission Electron ◽

Computer Controlled ◽

High Degree ◽

Five Axis ◽

Five Axes

A new step forward in Transmission Electron Microscopy has been made with the introduction of the CompuStage on the CM-series TEMs: CM120, CM200, CM200 FEG and CM300. This new goniometer has motorization on five axes (X, Y, Z, α, β), all under full computer control by a dedicated microprocessor that is in communication with the main CM processor. Positions on all five axes are read out directly - not via a system counting motor revolutions - thereby providing a high degree of accuracy. The CompuStage enters the octagonal block around the specimen through a single port, allowing the specimen stage to float freely in the vacuum between the objective-lens pole pieces, thereby improving vibration stability and freeing up one access port. Improvements in the mechanical design ensure higher stability with regard to vibration and drift. During stage movement the holder O-ring no longer slides, providing higher drift stability and positioning accuracy as well as better vacuum.

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Five Axis Control Machining of Surface Texture with Regular Pattern

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.75.1459 ◽

2009 ◽

Vol 75 (12) ◽

pp. 1459-1463 ◽

Cited By ~ 1

Author(s):

Akira HAYASHI ◽

Yoshikazu KOBAYASHI ◽

Kenji SHIRAI ◽

Yasuhiko HARA

Keyword(s):

Surface Texture ◽

Regular Pattern ◽

Five Axis

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Feedrate scheduling of a five-axis hybrid robot for milling considering drive constraints

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-020-06559-1 ◽

2021 ◽

Vol 112 (11-12) ◽

pp. 3117-3136

Author(s):

Guangxi Li ◽

Haitao Liu ◽

Wei Yue ◽

Juliang Xiao

Keyword(s):

Feedrate Scheduling ◽

Five Axis

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Numerical implementation of drop spin and tilt method for five-axis tool positioning for tensor product surfaces

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-021-07137-9 ◽

2021 ◽

Author(s):

Sandeep Kumar Sharma ◽

Ravinder Kumar Duvedi ◽

Sanjeev Bedi ◽

Stephen Mann

Keyword(s):

Tensor Product ◽

Numerical Implementation ◽

Tool Positioning ◽

Five Axis

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Ultrafast laser micro-nano structured superhydrophobic teflon surfaces for enhanced SERS detection via evaporation concentration

Advanced Optical Technologies ◽

10.1515/aot-2019-0072 ◽

2020 ◽

Vol 9 (1-2) ◽

pp. 89-100 ◽

Cited By ~ 1

Author(s):

Xinyu Hu ◽

Rui Pan ◽

Mingyong Cai ◽

Weijian Liu ◽

Xiao Luo ◽

...

Keyword(s):

Rhodamine 6G ◽

Optimal Parameter ◽

Solute Concentration ◽

Processing Parameter ◽

Detection Techniques ◽

Peak Intensity ◽

Target Analytes ◽

Sers Detection ◽

Scanning Path ◽

Evaporation Concentration

AbstractEvaporation concentration of target analytes dissolved in a water droplet based on superhydrophobic surfaces could be able to break the limits for sensitive trace substance detection techniques (e.g. SERS) and it is promising in the fields such as food safety, eco-pollution, and bioscience. In the present study, polytetrafluoroethylene (PTFE) surfaces were processed by femtosecond laser and the corresponding processing parameter combinations were optimised to obtain surfaces with excellent superhydrophobicity. The optimal parameter combination is: laser power: 6.4 W; scanning spacing: 40 μm; scanning number: 1; and scanning path: 90 degree. For trapping and localising droplets, a tiny square area in the middle of the surface remained unprocessed for each sample. The evaporation and concentration processes of droplets on the optimised surfaces were performed and analyzed, respectively. It is shown that the droplets with targeted solute can successfully collect all solute into the designed trapping areas during evaporation process on our laser fabricated superhydrophobic surface, resulting in detection domains with high solute concentration for SERS characterisation. It is shown that the detected peak intensity of rhodamine 6G with a concentration of 10−6m in SERS characterisation can be obviously enhanced by one or two orders of magnitude on the laser fabricated surfaces compared with that of the unprocessed blank samples.

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