Acoustic tool break detection system and method

Details Acoustic tool break detection system and method Acoustic tool break detection system and method

1984-12-21

1987-02-10

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340683, 73104, 73660, G08B 2100

Patent

active

046426175

ABSTRACT:
Substantial cutting condition changes that occur gradually, as opposed to the more usual sudden large change, are detected by setting upper and lower cutting noise mean level thresholds. When the mean cutting noise exceeds the upper threshold or stays below the lower threshold for a preset number of signal samples, a tool break alarm is generated. Techniques are given to reduce false alarms at the start and end of the cut and on runout on initial rough surface cuts. The system comprises an accelerometer or other sensor whose signal is preprocessed to attenuate lower frequency machinery noise and detect the signal energy in a band below 100 KHz, then sampled, and the digitized signal samples analyzed by pattern recognition logic.

REFERENCES:
patent: 3793627 (1974-02-01), Darrel et al.
patent: 3841149 (1974-10-01), Edwin
patent: 3842663 (1974-10-01), Harting et al.
patent: 3979739 (1976-09-01), Birchall
patent: 4087801 (1978-05-01), Noh
patent: 4563897 (1986-01-01), Moore

Affiliated with

Also associated with

Rating

Acoustic tool break detection system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustic tool break detection system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic tool break detection system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2365110