Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Bruce R. Borchardt"'
Publikováno v:
Precision Engineering. 25:29-34
We present a high-accuracy artifact useful for the evaluation of large CMMs. This artifact can be physically probed by the CMM in contrast to conventional techniques that use such purely optical methods as laser interferometers. The system can be use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a93d19c1e63360b3edb132ee572dc957
https://doi.org/10.1016/s0141-6359(00)00052-0
https://doi.org/10.1016/s0141-6359(00)00052-0
Publikováno v:
Precision Engineering. 22:87-97
This paper examines the measurement uncertainty of small circular features as a function of the sampling strategy; i.e., the number and distribution of measurement points. Specifically, we examine measuring a circular feature using a three-point samp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::014cdb6f4528fe8097ab00fd7cac87dd
https://doi.org/10.1016/s0141-6359(98)00006-3
https://doi.org/10.1016/s0141-6359(98)00006-3
Autor:
M. Levenson, Keith R. Eberhardt, Bruce R. Borchardt, W. Tyler Estler, Steven D. Phillips, M. McClain, Yin-Lin Shen, Ted Hopp, X. Zhang
Publikováno v:
Precision Engineering. 21:1-17
We present extensions to our prior work in modeling and correcting for pretravel variation errors m kinematic seat touch-trigger coordinate measuring machine (CMM) probes with straight styli. A simple correction term is shown to account for a ran e o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70cfa7f1c6a467a90c39b3d87bf38fd0
https://doi.org/10.1016/s0141-6359(97)00062-7
https://doi.org/10.1016/s0141-6359(97)00062-7
Autor:
Ted Hopp, M. Levenson, Steven D. Phillips, M. McClain, X. Zhang, Bruce R. Borchardt, Keith R. Eberhardt, W. Tyler Estler, Yin-Lin Shen, C. Witzgall
Publikováno v:
Precision Engineering. 19:85-97
We present the analysis of a simple mechanical model of a common type of kinematic seat touch trigger probe widely used on modern coordinate measuring machines (CMMs). The model provides a quantitative description of the pretravel variation or “pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71277fa3caa91553260cce2cfea9564b
https://doi.org/10.1016/s0141-6359(96)00040-2
https://doi.org/10.1016/s0141-6359(96)00040-2
Publikováno v:
Precision Engineering. 15:16-24
This article offers recommendations to coordinate-measuring machine (CMM) buyers, sellers, and users on the design of free-standing ball bar systems used to evaluate the volumetric performance of CMMs according to the ANSI/ASME B89.1.12M standard. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17c1c7629f7aadd56ffe8b9c5b152898
https://doi.org/10.1016/0141-6359(93)90274-e
https://doi.org/10.1016/0141-6359(93)90274-e
Autor:
Bruce R. Borchardt, Eliot L. Siegel, Zachary H. Levine, Charles W. Clark, Craig M. Shakarji, Nolan J. Brandenburg, Joseph J. Chen, Balasubramanian Muralikrishnan
Publikováno v:
Optics express. 18(8)
Two hundred eighty three uniaxial ellipsoids with sizes from 4 mm to 11 mm were measured with a coordinate measuring matching (CMM) and also scanned using a medical computed tomography (CT) machine. Their volumes were determined by counting voxels ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94b9261a8087138a7c613be743e502ed
https://pubmed.ncbi.nlm.nih.gov/20588660
https://pubmed.ncbi.nlm.nih.gov/20588660
The reference datum for a screw thread is the pitch diameter cylinder. Although a defined method within the United States for pitch diameter measurement exists, it does not follow worldwide procedures, and the complexity and uncertainties associated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c00793fafd244bd2f84e348ee39e5258
https://doi.org/10.1520/stp13055s
https://doi.org/10.1520/stp13055s
Lung cancer is a disease of uncontrolled cell growth in tissues of the lung. Computed tomography (CT) shows promise in detecting lung cancers at earlier, more operable stages, when survival is better. CT scans generate multiple 2-D slice images of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2e96fb02acf6841b9bd2ed9dcfac9f0
https://doi.org/10.6028/nist.ir.7571
https://doi.org/10.6028/nist.ir.7571
Autor:
Daniel S. Sawyer, Bruce R. Borchardt, Christopher J. Blackburn, William T. Estler, Steven D. Phillips, Balasubramanian Muralikrishnan
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
Small and unintended offsets, tilts, and eccentricity of the mechanical and optical components in laser trackers introduce systematic errors in the measured spherical coordinates (angles and range readings) and possibly in the calculated lengths of r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c384c90f8885956ffc5c81e7f9024c99
https://pubmed.ncbi.nlm.nih.gov/27504211
https://pubmed.ncbi.nlm.nih.gov/27504211
Autor:
Balasubramanian Muralikrishnan, Bruce R. Borchardt, Daniel S. Sawyer, Christopher J. Blackburn, Steven D. Phillips, William T. Estler
Publikováno v:
PerMIS
The American Society for Mechanical Engineers (ASME) recently released the ASME B89.4.19 Standard [1] on performance evaluation of spherical coordinate instruments such as laser trackers. At the National Institute of Standards and Technology (NIST),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1d656d70460bac3b1a0baeb75666500
https://doi.org/10.1145/1774674.1774698
https://doi.org/10.1145/1774674.1774698