Application of thin film PRTD's for the monitoring of cutting tool temperature during turning

A tool condition monitoring system will reduce machine downtime, eliminate tool/workpiece destruction, and maximize tool life. Several of the cutting tool failure modes are cutting temperature-dependent. One of the cutting parameters to be monitored is the cutting temperature. On-line cutting tool temperature monitoring has been addressed with a variety of techniques, from work-tool thermocouples to embedded thermocouples to infrared radiation technology. However, these methods are not durable and robust enough to provide quick, accurate results from a production environment. The objective of this research work was, therefore to investigate the applicability of a thin film Platinum Resistance Temperature Detector (PRTD) sensor in the monitoring of cutting tool temperature for a turning tool. The thin film PRTD offers a small size, industrially durable method of monitoring cutting tool temperature with a quick response time. The sensor is placed under the cutting tool insert near the tool nose and is spring-loaded to ensure intimate contact. The sensor's output was correlated to those of a thermocouple, located at the nose of the insert and compared to estimated cutting temperatures using existing empirical models. Both sensor's were calibrated using a torch as an infinite heat source. Experimental results obtained under different cutting conditions indicate a high potential for the use of the thin film PRTD sensor for on-line cutting temperature monitoring in an industrial setting.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Industrial and Systems Engineering

Department dc:contributor.department

Industrial and Systems Engineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1993

Author dc:creator

• Pifer, Mark T.

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

etd-08182009-040521

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/44297