Development and Evaluation of a Non-Contact On-Machine Profile Measurement System Using a Compact Laser Probe

2008 ◽  
Vol 381-382 ◽  
pp. 187-190 ◽  
Author(s):  
Ryo Kobayashi ◽  
Shinya MORITA ◽  
Y. Watanabe ◽  
Y. Uehara ◽  
W. Lin ◽  
...  
Keyword(s):  
Machine Tool ◽  
High Precision ◽  
Measurement System ◽  
Error Compensation ◽  
Measurement Instrument ◽  
The Other ◽  
Profile Measurement ◽  
Form Error ◽  
Laser Probe ◽  
Comparison Of The Results

A non-contact on-machine measurement system has been developed since various precise machines are getting lighter and smaller; therefore, processing with nano-precision is demanded recently. This system makes possible to measure with high precision without any damages and it is unnecessary for workpieces to attach or detach from a machine tool. Moreover, this system achieves on-machine form error compensation with high precision. On the other hand, the details of the system performances are still unknown. This study focuses on evaluating the performances by the comparison of the results that measured by this system and an existing measurement instrument under various conditions. As a result, this system shows an equivalent capability of measurement with high precision as the existing measurement instrument.

An On-Machine Error Measurement System for Micro-Machining

2007 ◽  
Author(s):  
Shih-Ming Wang ◽  
Han-Jen Yu ◽  
Yi-Hung Liu ◽  
Da-Fun Chen
Keyword(s):  
Machine Tool ◽  
Measurement System ◽  
Error Compensation ◽  
Model Comparison ◽  
Contour Error ◽  
Machining Accuracy ◽  
Error Measurement ◽  
Micro Machining ◽  
Machine Error ◽  
Machining Errors

Technology development trends towards the ability to manufacture ever smaller parts and feature sizes with increased precision and decreased cost. Micro machining is one of the important manufacturing methods to fulfill the requirements from the industry. The objective of this paper is to develop an on-machine error measurement system that can identify the micro machining errors for error compensation so that the machining accuracy of a meso-scale machine tool (mMT) can be enhanced. Because of the difficulty in handling and repositioning the miniature workpiece, the error measurement system should be non-contact and on-machine executable. To meet this requirement, a vision-based error measurement system integrating image re-constructive technology, camera pixel correction, and model comparison algorithm error was developed in this study. The proposed measurement system consists of a CCD with CCTV lens, a precision 3-DOF platform, image re-construction sub-system, and contour error calculation sub-system. By adopting Canny Edge Detection algorithm and camera pixel calibration method, the contour of a machined workpiece can be identified and compared to the pixel-based theoretical contour model of the workpiece to determine the micro machining errors. Because the system does not have to remove the machined workpiece from the CNC machine tool, errors due to re-installing and re-positioning can be avoided. To prove the feasibility of the developed algorithm and system, measurement results obtained from the vision-based measurement system were compared with the measurements of CMM, and error compensation experiment conducted on a 3-DOF mMT was also conducted. The results have shown the good feasibility and effectiveness of the developed system.

Accurate modification methodology of universal machine tool settings for spiral bevel and hypoid gears

2016 ◽  
Vol 232 (2) ◽  
pp. 339-349 ◽  
Author(s):  
Zhen-yu Zhou ◽  
Jin-yuan Tang ◽  
Han Ding
Keyword(s):  
Machine Tool ◽  
Error Compensation ◽  
Geometric Error ◽  
Higher Order ◽  
Experimental Result ◽  
Form Error ◽  
Hypoid Gears ◽  
Universal Machine ◽  
Spiral Bevel ◽  
Tooth Flank

Universal machine tool settings with higher-order motion coefficients are developed to make accurate modification considering the actual machine geometric error compensation for spiral bevel and hypoid gears. First, the universal machine tool settings are exploited for the identification of the real tooth flank form error. Furthermore, the error sensitivity analysis method and an improved Levenberg–Marquardt algorithm with a trust-region strategy are utilized to obtain the solution of modification amount. Finally, a higher-order modification methodology for the universal machine tool settings is proposed which mainly covers three vital parts: (a) optimized selection of the modification settings, (b) modification of universal machine tool settings, and (c) machine geometric error compensation. Especially, a higher-accuracy fitting method for the form error tooth flank is investigated. Some numerical examples verify that the tooth flank form error after higher-order modification can reach less than 0.5 µm or even a smaller one, and the position error after compensating process spindle can be reduced from 0.0044861° to 0.0009232°. In addition, given experimental result can validate the feasibility of the proposed methodology.

scholarly journals A Study on Error Compensation on High Precision Machine Tool System Using a 2D Laser Holographic Scale System

2012 ◽  
Vol 6 (6) ◽  
pp. 999-1014 ◽  
Author(s):  
Toru FUJIMORI ◽  
Kayoko TANIGUCHI ◽  
Chris ELLIS ◽  
Tojiro AOYAMA ◽  
Kazuo YAMAZAKI
Keyword(s):  
Machine Tool ◽  
High Precision ◽  
Error Compensation ◽  
Precision Machine

Error compensation for three-dimensional profile measurement system

2015 ◽  
Vol 8 (4) ◽  
pp. 402-412 ◽  
Author(s):  
Xu Ye ◽  
Haobo Cheng ◽  
Zhichao Dong ◽  
Hon-Yuen Tam
Keyword(s):  
Measurement System ◽  
Error Compensation ◽  
Three Dimensional ◽  
Profile Measurement

Design and Analysis of a Built-in Yaw Measurement System Using Dual Linear Scales for Automatic Machine Tool Error Compensation

2020 ◽  
Vol 56 ◽  
pp. 1286-1293 ◽  
Author(s):  
Shinya Kidani ◽  
Naruhiro Irino ◽  
Shigeaki Maruyama ◽  
Kayoko Taniguchi ◽  
Toru Fujimori ◽  
...  
Keyword(s):  
Machine Tool ◽  
Measurement System ◽  
Error Compensation ◽  
Automatic Machine

Error Compensation Method of Harmonic Analysis for Time Grating Sensor

2011 ◽  
Vol 121-126 ◽  
pp. 3850-3854
Author(s):  
Zi Ran Chen ◽  
Dong Lin Peng ◽  
Yong Zheng ◽  
Fang Yan Zheng ◽  
Tian Heng Zhang
Keyword(s):  
Harmonic Analysis ◽  
High Precision ◽  
Measurement System ◽  
Error Compensation ◽  
Production Cost ◽  
Measurement Accuracy ◽  
Compensation Method ◽  
Precision Time ◽  
Error Tracing ◽  
Mechanical Machining

Due to the complexity of measurement system, it is hard correct errors by using traditional error separation and error tracing technology. To reduce the production cost and improve the measurement accuracy, a novel error compensation method based on harmonic analysis is presented in this paper. In this way, high precision time grating sensors can be manufactured with low precision mechanical machining method. The experiment results prove that errors can be reduce within ±2″.

scholarly journals A Novel Rotor Profile Error Tracing and Compensation Strategy for High Precision Machining of Screw Rotor Based on Trial Cutting of Limited Samples

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
ZhiHuang Shen ◽  
Bin Yao ◽  
BinQiang Chen ◽  
Wei Feng ◽  
XiangLei Zhang
Keyword(s):  
Machine Tool ◽  
High Precision ◽  
Error Compensation ◽  
Precision Machining ◽  
Limited Sample ◽  
Rotor Profile ◽  
Screw Rotor ◽  
Novel Method ◽  
Error Tracing ◽  
Screw Rotors

The machining precision plays an important role in the operation reliability and service life of screw rotors. However, the actual machined rotor profile of screw rotors is different from its theoretical profile due to the errors of the machine tool. This paper proposes a novel method of error tracing and compensation to reduce the machined errors of rotor profile on the basis of the limited sample trials, and the method is based on a matrix of error compensation. The errors of rotor profile are obtained based on limited sample trials machining of screw rotors,and fitted into piecewise smooth data. A matrix of error compensation is established to compute the errors of rotor profile to generate a compensated rotor profile. The compensated rotor profile is then used to regenerate forming tool and a new rotor product is processed on the same machine tool. And the errors of new rotor profile are smaller and can be reduced within (−0.01 mm, 0.01 mm) after compensations. Finally, the actual machining examples illustrate that the method of error compensation can not only satisfy the machining requirement of high-precision rotors, but also has the characteristics of good stability and applicability.

scholarly journals Design of a Multi-Point Kinematic Coupling for a High Precision Telescopic Simultaneous Measurement System

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6365
Author(s):  
Raquel Acero ◽  
Juan José Aguilar ◽  
Francisco Javier Brosed ◽  
Jorge Santolaria ◽  
Sergio Aguado ◽  
...  
Keyword(s):  
Machine Tool ◽  
High Precision ◽  
Measurement System ◽  
Process Simulation ◽  
Machine Tools ◽  
Point Contact ◽  
Simultaneous Operation ◽  
Rotary Axes ◽  
Kinematic Coupling ◽  
Verification Process

This paper covers the design of a new multi-point kinematic coupling specially developed for a high precision multi-telescopic arm measurement system for the volumetric verification of machine tools with linear and/or rotary axes. The multipoint kinematic coupling allows the simultaneous operation of the three telescopic arms that are registered at the same time to a sphere fixed on the machine tool spindle nose. Every coupling provides an accurate multi-point contact to the sphere, avoiding collisions and interferences with the other two multi-point kinematic couplings, and generating repulsion forces among them to ensure the coupling’s fingers interlacing along the machine tool x/y/z travels in the verification process. Simulation presents minimal deformation of the kinematic coupling under load, assuring the precision of the sphere-to-sphere distance measurement. Experimental results are provided to show that the multi-point kinematic coupling developed has repeatability values below ±1.2 µm in the application.

A Machining Error Compensation Method Using on-Machine Profile Measurement in 3-Axis Aspheric Grinding

2010 ◽  
Vol 154-155 ◽  
pp. 390-395 ◽  
Author(s):  
Hao Huang ◽  
Xiang Yang Lei ◽  
Jian Wang ◽  
Qiao Xu ◽  
Liang Yu He ◽  
...  
Keyword(s):  
Measurement System ◽  
Error Compensation ◽  
Mutual Influence ◽  
Machining Accuracy ◽  
Profile Measurement ◽  
Precision Grinding ◽  
Machining Error ◽  
Machining Errors ◽  
Compensation Technique ◽  
Grinding Machine

The causes of machining errors are very complicated and apt to mutual influence in aspheric grinding, so it is difficult to improve machining accuracy by control one cause. To compensate the machining error of large aspheric grinding, an error-compensation technique using on-machine profile measurement system in three axes grinding machine are presented. To verify the effectiveness of the compensation machining and the reliability of the measurement system, experiments on high-precision grinding machine were performed. Moreover, the compensation machining with the on-machine measurement substantially decreases the machining errors and improve machining accuracy by more than 45%, compared with the non-compensation machining.

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