Signal Segmentation for Milling Process

Citation Author(s):
Haw-Ching
Yang
National Kaohsiung University of Science and Technology
Submitted by:
Haw-Ching Yang
Last updated:
Fri, 11/06/2020 - 04:19
DOI:
10.21227/bkyw-4g63
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Abstract 

This dataset is used to develop an algorithm for automatic segmenting the collected signals. When machining a workpiece in a milling process, vibration signals can be recorded by a 3-axis accelerometer, which is attached on the spindle of a CNC milling machine. To segment the recorded signals, a moving window (0.5 sec) is applied to sample the vibration signals and manually labeled the corresponding modes, i.e. dry run or milling, of each window. To verify the algorithm, 3 types of operations are provided and recorded in csv format. 

Instructions: 

Domain: milling process

Signal source: accelerometer 

Sampling rate: 2048 Hz 

Target: signal segmentation

Operations: 

  1. EXP_Drill: 
  • Spindle Speed (rpm): 2300
  • Feed Rate (mm/min): 190
  • Workpiece Material: SUS316
  • Ap (mm): 10
  • Ae (mm): 8.6
  • Tool Type: Drill
  • Tool Diameter (mm): 8.6
  • No. of Flutes: 2
  • No. of Files: 15

2.EXP_ISO 

  • Spindle Speed (rpm): 6000
  • Feed Rate (mm/min): 1500
  • Ap (mm): 5
  • Ae (mm): 5
  • Workpiece Material: AL6061
  • Tool Type: Milling
  • Tool Diameter (mm): 10
  • No. of Flutes: 3
  • No. of Files: 2

3.EXP_Square 

  • Spindle Speed (rpm): 1600
  • Feed Rate (mm/min): 320
  • Workpiece Material: FDAC
  • Ap (mm): 1
  • Ae (mm): 5
  • Tool Type: Milling
  • Tool Diameter (mm): 10
  • No. of Flutes: 4
  • No. of Files: 8

Total files: 25

File format: csv

Description of fields in each file

  • Timetag: tagging sequence per 0.5 sec
  • Segmentation: 0: dry run, 1: milling
  • Rawdata_X_1 ~ Rawdata_X_1024: vibration signals of axis X recorded at sampling rate 2048 Hz. It means the data collected in 0.5 sec.  
  • Rawdata_Y_1 ~ Rawdata_Y_1024: vibration signals of axis Y.
  • Rawdata_Z_1 ~ Rawdata_Z_1024: vibration signals of axis Z.