System and method of detecting dull and worn cutter bits
View Patent ↗A mining machine including a chassis, an actuator, a cutter drum supported by the chassis, the cutter drum driven by the actuator, a cutter bit coupled to the cutter drum, and a controller. The controller includes a processor and memory and is configured to measure a characteristic of the actuator, determine the cutter bit is worn based on the measured characteristic of the actuator, and output a signal when the cutter bit is determined to be worn.
1. An industrial machine comprising:
a chassis;
an actuator;
a cutter drum supported by the chassis, the cutter drum driven by the actuator;
a cutter bit coupled to the cutter drum; and
a controller, having a processor and memory, the controller configured to
determine an angle of the cutter drum with respect to the chassis,
determine a cutting load based on the angle of the cutter drum,
determine the cutter bit is worn based on the cutting load, and
output a signal when the cutter bit is determined to be worn.
2. The industrial machine of claim 1 , wherein the actuator is a motor.
3. The industrial machine of claim 1 , wherein the actuator is a hydraulic system.
4. The industrial machine of claim 1 , wherein the cutter bit is worn at a predetermined length of deterioration.
5. The industrial machine of claim 1 , wherein the cutter bit is worn at a predetermined percentage of deterioration.
6. The industrial machine of claim 1 , wherein the actuator is a motor rotationally driving the cutter drum and the industrial machine further comprises a hydraulic system positioning the cutter drum.
7. The industrial machine of claim 1 , wherein the controller is further configured to determine one or more cutting loads of the industrial machine based on the net cutting force and a characteristic of the actuator.
8. The industrial machine of claim 7 , wherein the cutter bit is determined to be worn based on changes in a relationship between the cutting loads and a production rate.
9. The industrial machine of claim 7 , wherein the cutter bit is determined to be worn based on changes in a relationship between two or more cutting loads.
10. The industrial machine of claim 1 , wherein the cutting load includes at least one selected from the group consisting of a net cutting force and a torque.
11. The industrial machine of claim 1 , wherein the cutting load is determined based on the angle of the cutter drum by:
monitoring at least one selected from the group consisting of a voltage of the actuator, an current of the actuator, and a pressure of a hydraulic apparatus of the cutter drum.
12. A method of detecting wear of a cutter bit driven by an actuator of an industrial machine having a cutter drum, the method comprising:
monitoring, via a sensor, an angle of the cutter drum with respect to the chassis;
determining, via a controller, a cutting load of the industrial machine based on the angle of the cutter drum;
determining, via the controller, the cutter bit is worn based on the cutting load of the industrial machine; and
outputting, from the controller, a signal when the cutter bit is determined to be worn.
13. The method of claim 12 , wherein the cutter bit is worn at a predetermined length of deterioration.
14. The method of claim 12 , wherein the cutter bit is worn at a predetermined percentage of deterioration.
15. The method of claim 12 , further comprising
rotationally driving, via the actuator, the cutter drum, and
positioning, via a hydraulic system, the cutter drum.
16. The method of claim 12 , further comprising
determining, via the controller, one or more cutting loads of the industrial machine based on the net cutting force and a characteristic of the actuator.
17. The method of claim 16 , wherein the cutter bit is determined to be worn based on changes in a relationship between the cutting loads and a production rate.
18. The method of claim 16 , wherein the cutter bit is determined to be worn based on changes in a relationship between two or more cutting loads.
19. The method of claim 12 , wherein the cutting load includes at least one selected from the group consisting of a net cutting force and a torque.
20. The method of claim 12 , wherein the cutting load is determined based on the angle of the cutter drum by:
monitoring at least one selected from the group consisting of a voltage of the actuator, an current of the actuator, and a pressure of a hydraulic apparatus of the cutter drum.