This dataset includes surface profiles—raw profile, roughness, and waviness—of 3,600 reamed holes and 400 drilled holes. Additionally, it features a 360-degree scan of a reamed bore captured at five-degree increments. It is part of the project "KI-Span". The research project focuses on improving tool life and part quality in machining processes by analysing data, with the goal of developing robust, process-independent methods. By leveraging high-quality production data, the project aims to reduce tool-related costs, particularly in industries like aerospace, where tools account for a significant portion of production expenses. Files Included1. Reamed_hole_360.parquet Description: Contains surface data of a single bore, measured in 1° increments. Index: distance — the distance along the bore axis. Columns: multi-level: 1. 'raw_profile' or 'roughness'; 2. Measurement taken at a specific angular position 0-359 (in degrees). Values: Height data of the profiles. 2. surface_profiles.parquet Description: Contains raw surface profiles, waviness, and roughness data of all measured bores. Index: A multi-level index with 1. 'plate', 2. 'hole_number' and 3. 'distance'. Columns: 'raw_profile', 'waviness' and 'roughness'. Values: Height data of the profiles. Example Usage in Python import pandas as pdimport matplotlib.pyplot as plt # Load the datasetdf = pd.read_parquet(".../surface_profiles.parquet", engine="pyarrow") # Exclude drilled holes (not reamed)drilled_rows = [3, 10, 17]max_hole_number = df.index.get_level_values('hole_number').max()drilled_holes = [i for i in range(1, max_hole_number + 1) if i % 20 in drilled_rows]df = df[~df.index.get_level_values('hole_number').isin(drilled_holes)] # Plot the raw profile of one borehole_data = df.loc[(2, 11)] # (plate 2, hole 11) plt.figure(figsize=(10, 2))plt.plot(hole_data.index, hole_data['raw_profile'], label='Raw Profile') plt.xlabel('Distance (mm)')plt.ylabel('Raw Profile (mm)')plt.title('Raw Profile of Hole 11 (Plate 1)')plt.grid(True)plt.legend()plt.tight_layout()plt.show()