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Author: johannes soons

Displaying records 11 to 20 of 33 records.
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11. A Novel Cooling System to Reduce Thermally-Induced Errors of Machine Tools
Published: 6/14/2007
Authors: M Alkan Donmez, Mahn-Hee Hahn, Johannes A Soons
Abstract: This study explores a method to reduce thermally-induced errors of machine tools through temperature stabilization with compressed air. The method uses inexpensive, specialy-shaped, silicon tubing wth small silts. Compressed air forced through such ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822722

12. Evaluation of an Inexpensive Method of stabilize the Temperature of Machine Tool Components
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7292
Published: 2/1/2006
Authors: Mahn-Hee Hahn, M Alkan Donmez, Johannes A Soons
Abstract: One of the best approaches for maintaining uniform temperature across a machine tool structure thus minimizing thermal deformations is removing the heat at the heat sources. This study evaluates the effectiveness of using inexpensive Personal Air Co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822446

13. Form-Profiling of Optics Using the Geometry Measuring Machine and NIST M-48 CMM
Published: 1/1/2006
Authors: Nadia Machkour-Deshayes, John Richard Stoup, John Lu, Johannes A Soons, Ulf Griesmann, Robert S. Polvani
Abstract: We are developing an instrument, the Geometry Measuring Machine (GEMM), to measure the profile errors of aspheric and free form optical surfaces, which require measurement uncertainties near 1nm. Using GEMM, an optical profile is reconstructed from ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822545

14. Analysis of the Step-Diagonal Test
Published: 6/1/2005
Author: Johannes A Soons
Abstract: The step-diagonal test modifies the diagonal displacement test for machine tool performance evaluation by executing a diagonal as a sequence of single-axis motions.  The proposed modification has gained interest because of the claim that the obt ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822286

15. Comparison of Measurement Procedures for Evaluating Thermal Errors of Machine Tools due to Moving Linear Axes
Published: 6/1/2005
Authors: Michael L McGlauflin, Johannes A Soons, M Alkan Donmez
Abstract: This paper investigates an alternative method to assess thermal errors due to the heat generated by moving linear axes using a spindle-mounted probe and simple artifacts.  The angular errors introduced by the warm-up of individual axes (X, Y and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821996

16. A Simple Ball Averager for Reference Sphere Calibrations
Published: 1/1/2005
Authors: Ulf Griesmann, Quandou Wang, Johannes A Soons, Remi Carakos
Abstract: When measuring the form errors of precision optics with an interferometer, the calibration of the reference wavefront is of central importance.  Ball averaging, or random ball testing, has in recent years emerged as a robust method for calibrati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822303

17. Accessing the Performance of Model-Based Control in a Distributed Machine Tool Control Environment
Published: 10/2/2004
Authors: John L Michaloski, Johannes A Soons, Frederick M Proctor
Abstract: Although Computerized Numerical Controller (CNC) machine tools have greatlyimproved precision, quality and productivity, there are still many areaswhere inaccuracies and inef- ficiencies remain. Model-Based Control (MBC) isa technique to advance mach ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823505

18. Improving CNC Machining Accuracy Through Thermal Model-Based Control
Published: 7/21/2004
Authors: John L Michaloski, Frederick M Proctor, Johannes A Soons, R King, W Bakula, H Dominguez, N Frampton
Abstract: The United States Army has a requirement to machine munitions to strict tolerances so that the munitions will launch properly and the explosives will detonate correctly. High precision parts require machine tools to operate with a high degree of acc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824511

19. Improving CNC Machining Accuracy Through Thermal Model-Based Control
Published: 7/21/2004
Authors: John L Michaloski, Frederick M Proctor, Johannes A Soons, R King, W Bakula, H Dominguez, N Frampton
Abstract: The United States Army has a requirement to machine munitions to strict tolerances so that the munitions will launch properly and the explosives will detonate correctly. High precision parts require machine tools to operate with a high degree of accu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822495

20. Characterization of Precision Spheres With XCALIBIR
Published: 1/1/2004
Authors: Ulf Griesmann, Johannes A Soons, Quandou Wang
Abstract: The geometry of a nearly spherical surface, for example that of a precision optic, is completely determined by the radius-of-curvature at one point and the deviation from the perfect spherical form at all other points of the sphere. Measurements of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822216