A systematic error modeling and separation method for the special cylindrical profile measurement based on 2-dimension laser displacement sensor

2019 ◽  
Vol 90 (10) ◽  
pp. 105006 ◽  
Author(s):  
Maowei Zhang ◽  
Yongmeng Liu ◽  
Chuanzhi Sun ◽  
Xiaoming Wang ◽  
Jiubin Tan
Keyword(s):  
Systematic Error ◽  
Error Modeling ◽  
Separation Method ◽  
Displacement Sensor ◽  
Profile Measurement ◽  
Laser Displacement Sensor ◽  
Cylindrical Profile

Profile Measurement of a Curved Workpiece by the Fuzzy Control of Sensor Positioning

1999 ◽  
Author(s):  
Masatake Shiraishi ◽  
Gongjun Yang
Keyword(s):  
Fuzzy Control ◽  
Control Algorithm ◽  
Experimental Results ◽  
Measuring System ◽  
Displacement Sensor ◽  
Profile Measurement ◽  
Laser Displacement Sensor ◽  
Inclination Angles ◽  
Fuzzy Control Algorithm ◽  
Sensor Positioning

Abstract A laser displacement sensor which has a resolution of 0.5 μm was used to determine the measurement of a curved workpiece profile in turning. This sensor is attached to a specially designed stage and is operated by three motors which are controlled by a fuzzy control algorithm. The experimental results show that the measuring system can be applied to workpieces having inclination angles of up to around 45°. The proposed measuring system has a practical measuring accuracy to within ten micrometers.

A novel cylindrical profile measurement model and errors separation method applied to stepped shafts precision model engineering

Measurement ◽  
2021 ◽  
pp. 110486
Author(s):  
Yongmeng Liu ◽  
Yingjie Mei ◽  
Chuanzhi Sun ◽  
Ruirui Li ◽  
Xiaoming Wang ◽  
...  
Keyword(s):  
Measurement Model ◽  
Separation Method ◽  
Profile Measurement ◽  
Cylindrical Profile

scholarly journals Analysis of Measurement Errors of a Diffuse-Reflection-Type Laser Displacement Sensor for Profile Measurement

2012 ◽  
Vol 6 (6) ◽  
pp. 724-727 ◽  
Author(s):  
Yoshihiro Kimura ◽  
◽  
Atsushi Matsubara ◽  
Yusuke Koike
Keyword(s):  
Measurement Error ◽  
Experimental Measurement ◽  
Measurement Errors ◽  
Diffuse Reflection ◽  
Measurement Range ◽  
Displacement Sensor ◽  
Profile Measurement ◽  
Laser Displacement Sensor ◽  
Simulation Based ◽  
Simulation Results

In this paper, the measurement error of a diffusereflection-type laser displacement sensor is analyzed for profile measurement. Multi-reflection error is predicted by a simple-beam-tracking simulation. Based on the simulation results, the measurement range of a laser displacement sensor is tuned, and multireflection error is reduced. Then, measurement errors in the experimental measurement of a small die are evaluated.

Turning Dynamics: Part 1 — Experimental Analysis

2012 ◽  
Author(s):  
Eric B. Halfmann ◽  
C. Steve Suh ◽  
N. P. Hung
Keyword(s):  
Instantaneous Frequency ◽  
Period Doubling ◽  
Displacement Sensor ◽  
Laser Displacement Sensor ◽  
Turning Process ◽  
Time Frequency ◽  
Spectral Components ◽  
Tool Vibrations ◽  
Exact Moment ◽  
The Stability

The workpiece and tool vibrations in a lathe are experimentally studied to establish improved understanding of cutting dynamics that would support efforts in exceeding the current limits of the turning process. A Keyence laser displacement sensor is employed to monitor the workpiece and tool vibrations during chatter-free and chatter cutting. A procedure is developed that utilizes instantaneous frequency (IF) to identify the modes related to measurement noise and those innate of the cutting process. Instantaneous frequency is shown to thoroughly characterize the underlying turning dynamics and identify the exact moment in time when chatter fully developed. That IF provides the needed resolution for identifying the onset of chatter suggests that the stability of the process should be monitored in the time-frequency domain to effectively detect and characterize machining instability. It is determined that for the cutting tests performed chatters of the workpiece and tool are associated with the changing of the spectral components and more specifically period-doubling bifurcation. The analysis presented provides a view of the underlying dynamics of the lathe process which has not been experimentally observed before.

Vibration Test of Titanium Alloy Pipes

2012 ◽  
Vol 184-185 ◽  
pp. 701-706
Author(s):  
Ming Xing Qiu ◽  
Chuang Shao ◽  
Yong Zhou ◽  
Li Hua Yue
Keyword(s):  
Titanium Alloy ◽  
Failure Criteria ◽  
Fatigue Tests ◽  
Test Method ◽  
Displacement Sensor ◽  
Laser Displacement Sensor ◽  
New Findings ◽  
Vibration Fatigue ◽  
Welded Pipe ◽  
Test Result

In order to determine the fatigue limits of two kinds of titanium alloy pipes connected by welding and rolling, fatigue tests were carried out by the Aero-Criterion which gives vibration fatigue test method and failure criteria. A laser-displacement-sensor was used at the free end and a strain-gauge at the root of the pipe specimen. The test result shows that the fatigue limit of the welded pipe is higher than the rolled one. In the end some new findings are listed according to the test.

In-Process Visualisation for Deformation Monitoring and Analysis of Sheet Metal Forming Processes

2013 ◽  
Vol 677 ◽  
pp. 384-387 ◽  
Author(s):  
Wai Kei Ricky Kot ◽  
Luen Chow Chan
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Deformation Process ◽  
Deformation Monitoring ◽  
Displacement Sensor ◽  
Laser Displacement Sensor ◽  
Profile Data ◽  
Profile Change

In this paper, a visualisation system will be discussed that can be used to capture the deformation profile of the sheet blank during sheet metal forming processes, such as deep drawing and shape forming. The visualisation system utilizes a 2D laser displacement sensor for deformation profile acquisition. The sensor is embedded in the die and the laser propagates through the die to detect the profile change of the specimen concealed in the die during operation. The captured profile data will be collected, manipulated and transferred to a monitor for display via a controller. This visualisation of the deformation profile will provide engineers and researchers with an intuitive means of analysing and diagnosing the deformation process during sheet metal forming.

scholarly journals A Comparison of the Probes with a Cantilever Beam and a Double-Sided Beam in the Tool Edge Profiler for On-Machine Measurement of a Precision Cutting Tool

Machines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 271
Author(s):  
Bo Wen ◽  
Sho Sekine ◽  
Shinichi Osawa ◽  
Yuki Shimizu ◽  
Hiraku Matsukuma ◽  
...  
Keyword(s):  
Cantilever Beam ◽  
Cutting Tool ◽  
Displacement Sensor ◽  
Laser Displacement Sensor ◽  
Tool Edge ◽  
Edge Profile ◽  
Measurement Principle ◽  
Beam Type ◽  
Tool Position ◽  
Tool Cutting

This paper describes a comparison of the mechanical structures (a double-sided beam and a cantilever beam) of a probe in a tool edge profiler for the measurement of a micro-cutting tool. The tool edge profiler consists of a positioning unit having a pair of one-axis DC servo motor stages and a probe unit having a laser displacement sensor and a probe composed of a stylus and a mechanical beam; on-machine measurement of a tool cutting edge can be conducted with a low contact force through measuring the deformation of the probe by the laser displacement sensor while monitoring the tool position. Meanwhile, the mechanical structure of the probe could affect the performance of measurement of the edge profile of a precision cutting tool. In this paper, the measurement principle of the tool edge profile is firstly introduced; after that, slopes and a top-flat of a cutting tool sample are measured by using a cantilever-type probe and a double-sided beam-type probe, respectively. The measurement performances of the two probes are compared through experiments and theoretical measurement uncertainty analysis.

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