Data processing: measuring – calibrating – or testing – Measurement system – Statistical measurement
Patent
1997-08-26
1999-01-05
Barlow, Jr., John E.
Data processing: measuring, calibrating, or testing
Measurement system
Statistical measurement
36447417, G06F 1900
Patent
active
058571663
ABSTRACT:
A method and apparatus for determining a dull/broken tool in a multi-tool spindle executing successive machine cycles. The total machine energy supplied to the spindle is determined. The average total machine energy supplied to the spindle in a plurality of successive machine cycles is also determined. The relative machine energy of the last machine cycle is determined by a ratio of the total machine energy to the average machine energy. A limit of the relative machine energy to the average total machine energy is established. The relative machine energy is compared with the limit to determine a tool condition, i.e., a broken tool. The instantaneous energy supplied to the plurality of machine tools is sampled a plurality of times during each machine cycle, and integrated to obtain the total machine energy for each machine cycle. The average total machine energy is updated with each new machine cycle over a predetermined number of most recent cycles.
REFERENCES:
patent: 4208718 (1980-06-01), Chung
patent: 4249243 (1981-02-01), Yoshida et al.
patent: 4442494 (1984-04-01), Fromson et al.
patent: 4547847 (1985-10-01), Olig et al.
patent: 4564911 (1986-01-01), Smith et al.
patent: 5070655 (1991-12-01), Aggarwal
patent: 5243533 (1993-09-01), Takagi et al.
patent: 5428556 (1995-06-01), Torizawa et al.
patent: 5568028 (1996-10-01), Uchiyama et al.
patent: 5587931 (1996-12-01), Jones et al.
Assouad Patrick
Barlow Jr. John E.
LandOfFree
Tool monitoring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool monitoring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool monitoring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-869466