U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 301 - 325 of 342

A Methodology for Compensating Errors Detected by Process-Intermittent Inspection

October 1, 2001
Author(s)
Herbert T. Bandy, M A. Donmez, David E. Gilsinn, Michael Kennedy, Kenneth W. Yee, Alice V. Ling, Neil D. Wilkin
This report describes principles and methodology for compensating geometric errors of machined parts due to machining processes. The error tendencies are identified by on-machine inspection of the part before the finish cut. Tool path adjustments

Embedded Power Quality Solutions for Computer Numerical Control Machine Tools

January 1, 2001
Author(s)
Bradley N. Damazo, M Stephens, Johannes A. Soons, M A. Donmez
Electric Power Research Institute (EPRI) research and testing, conducted over many years, has indicated that variations in electric power quality can negatively impact end-use equipment. This research and testing has helped to form the theory that the

Technologies for Condition-Based Maintenance of Machine Tools

January 1, 2001
Author(s)
M A. Donmez, Kari K. Harper, Kang B. Lee
NIST has embarked upon a research effort to advance the capabilities and promote the continued growth of condition-based maintenance (CBM) technologies for the discrete-parts manufacturing industry. This research is focused on providing an alternative to

Development of a Linear Motor Drive Testbed and Initial Thermal Behavior Results

October 1, 2000
Author(s)
Kari K. Harper, Bradley N. Damazo, M A. Donmez
The machine tool industry is moving toward using linear motors for both conventional and high speed machine tools due to many advantages: low maintenance, faster assembly times (compared with the more conventional ball screw drives), and improvements in

Concealment and Obstacle Detection for Autonomous Driving

October 1, 1999
Author(s)
Tommy Chang, Tsai Hong Hong, Steven Legowik, Marilyn N. Abrams
Obstacle detection and mapping are essential for unmanned autonomous driving. This paper describes both the sensors and the supporting software used in our system for driving autonomously on cross-country roads. The Ladar Range Imaging Camera (EBK) is used

Fast Probing Considerations for On-Machine Inspection of Parts

October 1, 1999
Author(s)
Alice V. Ling, Neil D. Wilkin
A calibration procedure for on-machine probing is developed. This is necessary if the machine is used as a coordinate measuring machine to measure the absolute part dimensions. This is most crucial in turning machines where the turret is unable to go below

Standards for the rapid prototyping industry

January 4, 1999
Author(s)
Kevin K. Jurrens
This paper proposes that development of formalized standards for the rapid prototyping (RP) industry will help enable the continued growth and further advancement of RP technologies. Appropriate standards can provide common methods for measuring the

A Summary of Micro-milling Studies

January 1, 1999
Author(s)
Bradley N. Damazo, Matthew A. Davies, Brian S. Dutterer, Michael Kennedy
The importance of micro-milling grows as the demand for smaller parts within the medical, telecommunications, and aerospace industries increase. Unlike conventional milling, there are no reference materials (such as Machining Data Handbook for conventional

On the Geometric and Thermal Errors of a Hexapod Machine Tool

January 1, 1999
Author(s)
Johannes A. Soons
This paper describes the measurement and analysis of the quasi-static errors of a prototype hexapod milling machine located at the National Institute of Standards and Technology (NIST). Emphasis is placed on a) identification of the most important

Evaluating the Performance of Rapid Prototyping/Rapid Manufacturing Systems

September 28, 1998
Author(s)
Richard L. Rhorer, Kevin K. Jurrens, Bradley N. Damazo
A method of fabricating and measuring simple part shapes to evaluate the performance of Rapid Prototyping (RP) systems is proposed in this report. These test shapes would include cylinders, rectangular bricks, cones, and other basic shapes. We propose a

Rapid Prototyping

January 1, 1998
Author(s)
Kevin K. Jurrens
Continued growth and acceptance of rapid prototyping (RP) will come only if the technology reaches a broader base of users. For this to happen, it must become easier for companies to measure the benefits of RP and justify its costs. Today, measuring the

Thermal Error Modeling of Machine Tools Using Neural Networks

September 18, 1997
Author(s)
Alice V. Ling
This paper describes an approach for the enhancement of machine tool accuracy. A prediction of the thermally-induced displacement error of the cutting tool with respect to the workpiece is used for corrective action. Recently, researchers have increased

Error Analysis of a Hexapod Machine Tool

April 3, 1997
Author(s)
Johannes A. Soons
This paper describes the measurement and analysis of the quasi-static errors of a prototype hexapod milling machine at the National Institute of Standards and Technology (NIST). Emphasis is placed on a) the identification and definition of the parametric
Displaying 301 - 325 of 342