Processing system, display system, processing apparatus, processing method for processing apparatus, and processing program

Patent metadata

Field	Value
Publication number	US-12353190-B2
Application number	US-202017916029-A
Country	US
Kind code	B2
Filing date	Nov 6, 2020
Priority date	Apr 13, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A processing system includes a cutting tool for milling, a plurality of sensors, and a processing unit. The plurality of sensors each is configured to measure a physical quantity that indicates a state related to loads on the cutting tool during cutting. The processing unit is configured to generate, based on measurement results from the respective sensors at a plurality of measurement time points, measurement data that is related to the loads in two directions on a plane perpendicular to a rotation axis of the cutting tool and that includes two-dimensional data at each of the measurement time points, and to perform a determination process concerning cutting in which the cutting tool is used, based on a two-dimensional shape indicated by the generated measurement data.

First claim

The invention claimed is:

1. A processing system comprising:
a cutting tool for cutting;
a plurality of sensors disposed on the cutting tool; and
a processor that obtains measurement results measured by the plurality of sensors and process the obtained measurement results, wherein
the plurality of sensors each being configured to measure a physical quantity that indicates a state related to loads on the cutting tool during cutting,
the processor being configured to generate, based on the obtained measurement results from the respective sensors at a plurality of measurement time points, measurement data that is related to the loads in two directions on a plane perpendicular to a rotation axis of the cutting tool and that includes two-dimensional data at each of the measurement time points, and to perform a determination process concerning cutting in which the cutting tool is used, based on a two-dimensional shape indicated by the generated measurement data,
the processor is configured to obtain calculation data that is calculated based on a shape of the cutting tool and based on a cutting condition when the cutting tool is used and that includes a plurality of pieces of two-dimensional data, at a plurality of time points, related to the loads in the two directions on the plane perpendicular to the rotation axis, and
the determination process, further includes determining an abnormality in cutting in which the cutting tool is used, based on a result of comparing the two-dimensional shape indicated by the measurement data that includes the plurality of pieces of two-dimensional data corresponding to the plurality of measurement time points in a first period with a two-dimensional shape indicated by the calculation data that is calculated based on the cutting condition in the first period.

2. The processing system according to claim 1 , wherein the processor is configured to perform the determination process, based on the two-dimensional shape indicated by the calculation data that differs depending on the cutting condition.

3. The processing system according to claim 1 , wherein the processor is configured to perform the determination process, further based on a result of comparing a two-dimensional shape indicated by second measurement data that includes a plurality of pieces of two-dimensional data corresponding to the plurality of measurement time points in a second period different from the first period with the two-dimensional shape indicated by the first measurement data.

4. The processing system according to claim 1 , wherein the processor is configured to perform the determination process, further based on a result of comparing a two-dimensional shape indicated by second measurement data that includes a plurality of pieces of two-dimensional data corresponding to the plurality of measurement time points in a second period different from the first period with a two-dimensional shape indicated by second calculation data that is calculated based on the cutting condition in the second period.

5. The processing system according to claim 1 , wherein the processor is configured to perform the determination process, further based on a result of comparing the cutting condition in the first period with the cutting condition in a second period different from the first period.

6. The processing system according to claim 1 , wherein the processor is configured to perform the determination process, based on a degree of similarity between the two-dimensional shape indicated by the measurement data and the two-dimensional shape indicated by the calculation data.

7. The processing system according to claim 1 , wherein the processor is configured to perform the determination process concerning a cutting condition of cutting in which the cutting tool is used.

8. The processing system according to claim 1 , wherein the processor is configured to generate the measurement data that includes a plurality of pieces of two-dimensional data corresponding to the plurality of measurement time points in a period of time taken for the cutting tool to rotate a plurality of times.

9. The processing system according to claim 1 , wherein the processor is configured to generate the measurement data in which a rotation angle between two pieces of two-dimensional data adjacent to each other around the rotation axis is 5° or less and to obtain the calculation data in which a rotation angle between two pieces of two-dimensional data adjacent to each other around the rotation axis is 5° or less.

10. A processing system comprising: a cutting tool for cutting;
a plurality of sensors disposed on the cutting tool; and
a processor that obtains measurement results measured by the plurality of sensors and processes the obtained measurement results, wherein
the plurality of sensors each being configured to measure a physical quantity that indicates a state related to loads on the cutting tool during cutting,
the processor being configured to generate, based on the obtained measurement results from the respective sensors at a plurality of measurement time points, measurement data that is related to the loads in two directions on a plane perpendicular to a rotation axis of the cutting tool and that includes two-dimensional data at each of the measurement time points, and to perform a determination process concerning cutting in which the cutting tool is used, based on a two-dimensional shape indicated by the generated measurement data,
the processor is configured to obtain calculation data that is calculated based on a shape of the cutting tool and based on a cutting condition when the cutting tool is used and that includes a plurality of pieces of two-dimensional data, at a plurality of time points, related to the loads in the two directions on the plane perpendicular to the rotation axis,
the determination process, further includes determining an abnormality in cutting in which the cutting tool is used, based on a result of comparing the two-dimensional shape indicated by the measurement data that includes the plurality of pieces of two-dimensional data corresponding to the plurality of measurement time points in a first period with a two-dimensional shape indicated by the calculation data that is calculated based on the cutting condition in the first period, and
the processor is configured to calculate a degree of rotational symmetry indicating a degree of the rotational symmetry based on a result of comparison between a two-dimensional shape indicated by the obtained calculation data and a shape obtained by rotating the two-dimensional shape indicated by the obtained calculation data around a center, and perform the determination process based on the calculated degree of rotational symmetry.

11. A processing apparatus comprising:
a processor configured to
obtain measurement results from a plurality of sensors disposed on a cutting tool, the measurement results being physical quantities each indicating a state related to loads on the cutting tool during cutting,
generate, based on the measurement results from the respective sensors at a plurality of measurement time points previously obtained measurement data that is related to the loads in two directions on a plane perpendicular to a rotation axis of the cutting tool and that includes two-dimensional data at each of the measurement time points,
perform a determination process concerning cutting in which the cutting tool is used, based on a two-dimensional shape indicated by the measurement data previously generated,
acquire calculation data including a plurality of two-dimensional data regarding the load in two directions on a plane perpendicular to the rotation axis at a plurality of

Assignees

• Sumitomo Electric Industries

Inventors

• Koike Yusuke
• Higashiura Yuma

Classifications

• G05B2219/50327

  As function of cutting forces · CPC title

• G05B2219/41376

  Tool wear, flank and crater, estimation from cutting force · CPC title

• G05B2219/37274

  Strain gauge · CPC title

• G05B2219/37087

  Cutting forces · CPC title

• B23Q17/0966

  by measuring a force on parts of the machine other than a motor · CPC title