scholarly journals Usage of I++ Simulator to Program Coordinate Measuring Machines when Common Programming Methods are difficult to apply

2014 ◽  
Vol 14 (1) ◽  
pp. 1-7 ◽  
Author(s):  
A. Gąska ◽  
D. Szewczyk ◽  
P. Gąska ◽  
M. Gruza ◽  
J. Sładek
Keyword(s):  
High Precision ◽  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
General Process ◽  
Standard Methods ◽  
Machine Performance ◽  
Measuring Machine ◽  
Machine Programming ◽  
Real Machine

Abstract Nowadays, simulators facilitate tasks performed daily by the engineers of different branches, including coordinate metrologists. Sometimes it is difficult or almost impossible to program a Coordinate Measuring Machine (CMM) using standard methods. This happens, for example, during measurements of nano elements or in cases when measurements are performed on high-precision (accurate) measuring machines which work in strictly air-conditioned spaces and the presence of the operator in such room during the programming of CMM could cause an increase in temperature, which in turn could make it necessary to wait some time until conditions stabilize. This article describes functioning of a simulator and its usage during Coordinate Measuring Machine programming in the latter situation. Article also describes a general process of programming CMMs which ensures the correct machine performance after starting the program on a real machine. As an example proving the presented considerations, measurement of exemplary workpiece, which was performed on the machine working in the strictly air-conditioned room, was described

Rapid and robust on-site evaluation of articulated arm coordinate measuring machine performance

2018 ◽  
Vol 29 (11) ◽  
pp. 115011 ◽  
Author(s):  
Salma El Asmai ◽  
François Hennebelle ◽  
Thierry Coorevits ◽  
Rénald Vincent ◽  
Jean-François Fontaine
Keyword(s):  
Coordinate Measuring Machine ◽  
Machine Performance ◽  
Site Evaluation ◽  
Measuring Machine

Development of a Sensitive Probe for Coordinate Measuring Machines

2005 ◽  
Vol 295-296 ◽  
pp. 325-330 ◽  
Author(s):  
M. Watanabe ◽  
Ryoshu Furutani
Keyword(s):  
Laser Diode ◽  
Precision Measurement ◽  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Contact Type ◽  
Photo Diode ◽  
Probe System ◽  
Measuring Machine ◽  
Industrial Needs

Requirement for precision measurement becomes extremely advanced as industrial needs advances. CMM (Coordinate Measuring Machine) is one of the most adequate measuring machines to meet the requirement. As the precision of CMM becomes higher, it is important to improve the sensitivity of probe. We developed a contact type probe which consisted of a QPD (quadratic photo diode), a ball lens, and a laser diode to detect the displacement of stylus. The probe system has a resolution of 31nm.

Practical Measurement Strategies for Verification of Freeform Surfaces Using Coordinate Measuring Machines

2011 ◽  
Vol 18 (2) ◽  
pp. 209-222 ◽  
Author(s):  
G. Rajamohan ◽  
M. Shunmugam ◽  
G. Samuel
Keyword(s):  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Design Specification ◽  
Freeform Surfaces ◽  
B Splines ◽  
Measuring Machine ◽  
Machining Operations ◽  
Measurement Strategies ◽  
New Strategies ◽  
Practical Measurement

Practical Measurement Strategies for Verification of Freeform Surfaces Using Coordinate Measuring MachinesFreeform surfaces have wider engineering applications. Designers use B-splines, Non-Uniform Rational B-splines, etc. to represent the freeform surfaces in CAD, while the manufacturers employ machines with controllers based on approximating functions or splines. Different errors also creep in during machining operations. Therefore the manufactured freeform surfaces have to be verified for conformance to design specification. Different points on the surface are probed using a coordinate measuring machine and substitute geometry of surface established from the measured points is compared with the design surface. The sampling points are distributed according to different strategies. In the present work, two new strategies of distributing the points on the basis of uniform surface area and dominant points are proposed, considering the geometrical nature of the surfaces. Metrological aspects such as probe contact and margins to be provided along the sides have also been included. The results are discussed in terms of deviation between measured points and substitute surface as well as between design and substitute surfaces, and compared with those obtained with the methods reported in the literature.

scholarly journals Research of three dimensional laser scanning coordinate measuring machine

2018 ◽  
Vol 232 ◽  
pp. 02015
Author(s):  
Zhihua Jiang ◽  
Wenjian Zhang ◽  
Lizhen Cui
Keyword(s):  
3D Printing ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Measuring Instrument ◽  
Calibration System ◽  
Measuring Range ◽  
Measuring Machine

Three dimensional laser scanning coordinate measuring machine is suitable for the measurement of 3D printing products, and its measuring range depends on the three coordinate measuring machine. It is the main 3D printing product measuring instrument [1]. In this paper, the principle of laser scanning three coordinate measuring machine is analyzed. The accuracy and reliability of the calibration system for 3D printing products are verified. According to the newly revised JJF 1064 Calibration specification for coordinate measuring machines [3], it is calibrated.

Measurement System for Non-Cylinder Pin Hole of Piston

2011 ◽  
Vol 301-303 ◽  
pp. 617-622
Author(s):  
Z. Y. Yang ◽  
D. H. Liu ◽  
F. Yang ◽  
Z. G. Xie ◽  
Y. Huang
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Coordinate Measuring Machine ◽  
Measuring Instrument ◽  
Movement Error ◽  
Pneumatic Measuring ◽  
Software Modules ◽  
Measuring Machine

Aim to the low measuring precision of non-cylinder pin hole using the coordinate measuring machine(CMM)and pneumatic measuring instrument, a new solution is proposed which use the high-precision digital lever probe to detect the contours of pin hole with a single clamping situation. The measuring principal of non-cylinder pin hole of piston is introduced and the functions and measuring processes of the measurement system are also presented. The software modules are given and the probe centering error and the parallelism movement error are discussed detailedly. A measuring example is given in the end. The measuring results show that the measurement system has the ability to detect the contours of pin hole with high-precision and efficiently.

A study on the key techniques of application of REVO five-axis system in non-orthogonal coordinate measuring machine

2016 ◽  
Vol 231 (4) ◽  
pp. 730-736 ◽  
Author(s):  
Haitao Zhang ◽  
Shugui Liu ◽  
Xinghua Li
Keyword(s):  
Mathematical Model ◽  
Measurement Data ◽  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Measurement Results ◽  
Measuring Machine ◽  
Key Techniques ◽  
Five Axis ◽  
The Mathematical Model ◽  
Body Theory

REVO five-axis system, designed for the orthogonal coordinate measuring machines, must be reconfigured for the application in the non-orthogonal coordinate measuring machines. First, in this article, error sources of the system and components of measurement data are analyzed; then, scale values of coordinate measuring machine axes, which are essential to derive the coordinates of measured points in non-orthogonal coordinate measuring machine, are separated out. Besides, the mathematical model of REVO is established based on the quasi-rigid body theory, from which the measurement results can be evaluated by data derived instead of that returned by the system. The effectiveness of both separation of scale values and mathematical model of REVO is proved by experiments and practice. The research of this article is of great significance to the application of REVO five-axis system in the non-orthogonal coordinate measuring machine.

Experimental Performance Study of Industrial-Grade Coordinate Measuring Machines Using a Calibrated Production Workpiece

2014 ◽  
Vol 613 ◽  
pp. 118-124
Author(s):  
Crhistian Raffaelo Baldo ◽  
Gustavo Daniel Donatelli
Keyword(s):  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Performance Study ◽  
Experimental Performance ◽  
Measurement Strategy ◽  
Industrial Grade ◽  
Data Points ◽  
Good Measurement ◽  
Measuring Machine ◽  
Measurement Practices

The measurement of a part on a coordinate measuring machine may be affected by many factors such as machine frame accuracy, probe configuration, measuring environment, and measurement strategy. In order to understand the effect of some of those factors on measurements performed in industrial-grade machines, a master production workpiece has been chosen and circulated in Brazilian industries for collecting data points of the calibrated workpiece features according to a predefined master measuring protocol. Conclusions could be drawn about the behavior of each machine under varying conditions, measurement divergences from similar machines operating under distinct conditions, the complexity of measurements with CMMs, and the need for good measurement practices in the productive sector.

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