Development of a laser-based measurement system for evaluation of the scraping workpiece quality
Journal
Optics and Lasers in Engineering
Journal Volume
49
Journal Issue
8
Pages
1045-1053
Date Issued
2011
Author(s)
Abstract
A laser-based measurement system for evaluation of the scraping workpiece quality that can eliminate contact-induced measurement errors and increase measurement accuracy is proposed. The laser-based measurement system comprises a light-scattering-type triangulation laser, a computer numerical control (CNC) machine tool, and an analog-to-digital (A/D) card. The triangulation laser measures the depth of the scraping spots and the CNC machine tool locates their position. The 3D data of the scraping workpiece is then drawn using the least squares method. Cast iron and Turcite workpieces can be measured. Five parameters of the scraping workpiece, namely peak points per square inch, percentage of points, distribution of heights of points or depth of surroundings, edge shape of the grooves, and flatness, can be evaluated. The scanning rate and sampling rate of the laser-based measurement system are 100 mm/s and 10 KHz, respectively. In the future, an appliance machine based on the proposed system will be designed for the on-line detection of scraping workpieces. ? 2011 Elsevier Ltd.
Subjects
3D data
Analog-to-digital
CNC machine tools
Computer numerical control machines
Edge shape
Laser-based
Laser-based measurement
Least squares method
Least squares methods
Measurement accuracy
On-line detection
Sampling rates
Scanning rate
Scraping workpiece
Triangulation lasers
Work pieces
Cast iron
Computer control systems
Least squares approximations
Machine tools
Measurement errors
Measurements
Numerical control systems
Triangulation
Quality control
Type
journal article