Dynamic Error Measurement for Large Machine Tools

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,996.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-11-C-0035
Award Id:
96777
Agency Tracking Number:
10SB2-0257
Solicitation Year:
n/a
Solicitation Topic Code:
DARPA 10-005
Solicitation Number:
n/a
Small Business Information
889 South Rainbow Blvd. PMB 690, Las Vegas, NV, 89145
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
BethanyWoody
Senior Research Engineer
(704) 231-0329
bwoody@mfg-labs.com
Business Contact:
ThomasDelio
President
(702) 869-0836
tdelio@mfg-labs.com
Research Institute:
n/a
Abstract
Existing machine tool metrology methods measure the quasistatic errors of a machine tool and, thus, evaluate its static positioning accuracy. Yet machine tools are dynamic, they do not stop and pause in an effort to reach a programmed position. Additionally, current techniques do not identify all of the errors, many of which significantly impact the volumetric accuracy of the machine. Almost immediately once the machine is in use, the errors arising from thermal conditions, dynamic motions, and process loads overpower the alignment efforts. Therefore, at this time there is a large and growing need for real-time measurement of the performance of multi-axis machines at typical operational feeds and speeds on trajectories that are representative of actual parts. The goal of this feasibility study is to assess the capability of laser trackers to serve as a dynamic metrology device. To do this we will quantify the current capabilities and limitations of laser trackers, how these affect its functionality in the intended application, and outline next step for addressing these issues and making laser trackers more suited for real-time dynamic tracking of machine tool errors.

* information listed above is at the time of submission.

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