Bore hole inspection and 3D metrology
Measuring System: BoreInspect
Keywords: bores, cylinders, valves, bore ID, aerospace, automotive, precision machining
Typical bore measurement requirements
Internal surfaces of bore holes in high-precision sectors need to adhere to strict specifications in terms of:
- Dimensions (GD&T)
- Straightness, cylindricity, conicity, ovality, taper, distortion, runout
- Inner features such as steps, threads, cavities, chambers, cross-holes, grooves, and O-rings
- Absence or low incidence of defects
- Roughness characteristics.
Bore measurement using BoreInspect
Novacam’s BoreInspect greatly speeds up the task of high-precision bore inspection and facilitates automation. This modular non-contact inspection system features a rotational scanner with a small-diameter probe that easily enters bores to acquire their inner 3D topography directly and down to the micron.
Automated or in-lab inspection
With BoreInspect, surface acquisition and the subsequent 2D/3D characterization (topography), roughness measurement, and defect detection are easily automated and carried out right on the shop or manufacturing plant floor, bringing high-precision manufacturers significant savings.
- Automation is supported by system capabilities such as datum alignment, automated pass/fail reporting, and exportable reports
- Bore ID data may be evaluated with respect to user-defined criteria (GD&T, inner feature specifications, roughness, and defect inspection), or compared to a reference CAD model.
For in-lab inspection, accompanying metrology software on a PC (e.g., PolyWorksTM) enables full viewing and analysis of the acquired point cloud as a 3D interactive map. Views such as deviation maps provide key insight into bore machining processes.
Technology that enables versatility
The BoreInspect system is based on low-coherence interferometry technology. It is also a modular and fiber-based optical system; its small-sized rotational scanner is connected to the signal-processing interferometric detector with an optical fiber that can be hundreds of meters long. As such, the rotational scanner is easily integrated as either a robot arm end-effector or as a 3D vision component in automated or semi-automated systems on the plant floor.