scholarly journals Path Planning and Setup Orientation for Automated Dimensional Inspection Using Coordinate Measuring Machines

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Osama Abdulhameed ◽  
Abdulrahman Al-Ahmari ◽  
Syed Hammad Mian ◽  
Mohamed K. Aboudaif
Keyword(s):  
Coordinate Measuring Machine ◽  
Fine Tuning ◽  
Machine Language ◽  
Inspection Planning ◽  
Suggested Approach ◽  
Inspection Plan ◽  
Inspection Process ◽  
Measuring Machine ◽  
Part Inspection ◽  
Artificial Neural Network Ann

Inspection planning is considered an essential practice in the manufacturing industries because it ensures enhanced product quality and productivity. A reasonable inspection plan, which can reduce inspection costs and achieve high customer satisfaction, is therefore very important in the production industry. Considerations such as preparations for part inspection, measuring machines, and their setups as well as the measurement path are described in an inspection plan which is subsequently translated into part inspection machine language. Therefore, the measurement of any component using a coordinate measuring machine (CMM) is the final step preceded by several other procedures, such as the preparation of the part setup and the generation of the probe path. Effective measurement of components using CMM can only be done if the preceding steps are properly optimized to automate the whole inspection process. This paper has proposed a method based on artificial intelligence techniques, namely, artificial neural network (ANN) and genetic algorithm (GA), for fine-tuning output from the different steps to achieve an efficient inspection plan. A case study to check and validate the suggested approach for producing effective inspection plans for CMMs is presented. A decrease of nearly 50% was observed in the travel path of the probe, whereas the CMM measurement time was reduced by almost 25% during the actual component measurement. The proposed method yielded the optimum part setup and the most appropriate measuring sequence for the part considered.

Automatic Coordinate Measuring Machine Inspection

1999 ◽  
Author(s):  
V. A. Albuquerque ◽  
F. W. Liou ◽  
S. Agarwal ◽  
O. R. Mitchell
Keyword(s):  
Path Planning ◽  
Computer Aided Design ◽  
Coordinate Measuring Machine ◽  
Industrial Applications ◽  
Prototype Development ◽  
Development Cycle ◽  
Inspection Process ◽  
Measuring Machine ◽  
Aided Design ◽  
Point Placement

Abstract In many industrial applications, such as product prototype development, automation of inspection process can greatly improve product quality and product development cycle, time. This paper discusses a development of a vision aided automatic inspection using Coordinate Measuring Machine (CMM). We seek to integrate the flexibility afforded by computer vision systems with the precision of numerically controlled coordinate measuring machines to achieve a fully automatic and reliable inspection of the industrial parts. The 3-D design information and part specification from computer-aided design file is used for inspection point placement and CMM path planning. The proposed system demonstrates that optimal collision-free inspection paths can be efficiently generated for geometrically complex parts consisting of multiply intersecting features. This is made possible by using iterative subdivision of surfaces for point placement coupled with, efficient 3-D collision avoidance and path planning. The paper discusses different algorithms used, and presents experimental results.

scholarly journals A frame for a computer aided inspection planning system

2015 ◽  
Vol 4 (1) ◽  
pp. 125 ◽  
Author(s):  
Wilma Polini ◽  
Giovanni Moroni
Keyword(s):  
Measurement Techniques ◽  
Coordinate Measuring Machine ◽  
Planning System ◽  
Inspection Planning ◽  
Coordinate Measurement ◽  
Measurement Results ◽  
Measuring Machine ◽  
Set Up ◽  
Almost All ◽  
Computer Aided Inspection

Coordinate Measuring Machine (CMM) inspection planning is an activity performed by well-trained operators, but different measurement techniques, using the same data analysis algorithms yield in different measurement results. This is a well-recognized source of uncertainty in coordinate measurement. A CMM, provided with an automatic inspection planning (CAIP) system, permits to implement more accurate and efficient operating procedures and to fit higher quality assurance standards and tighter production timings.In this paper we present a frame of a CAIP system, able to deal with almost all the decisional stages of CMM inspection. Moreover, original approaches have been developed and presented in inspection feature selection, part set-up, probe configuration, and path planning.

A Virtual CMM Inspection Tool for Capturing Planning Strategies

2017 ◽  
Author(s):  
Dimitrios Anagnostakis ◽  
James Ritchie ◽  
Theodore Lim ◽  
Raymond Sung ◽  
Richard Dewar
Keyword(s):  
Motion Tracking ◽  
Coordinate Measuring Machine ◽  
Assembly Planning ◽  
Training Methods ◽  
Inspection Planning ◽  
Sources Of Knowledge ◽  
Challenging Tasks ◽  
Measuring Machine ◽  
Planning Strategies ◽  
Product Verification

One of the most challenging tasks throughout the development and manufacturing of a product is the capturing and formalization of engineering knowledge and expertise. In the past, many researchers have successfully proposed different techniques for capturing knowledge during the design, process and assembly planning of a product. However, few efforts have focused on applying knowledge capture to the task of product verification for Coordinate Measuring Machine (CMM) inspection; most of these are manual, obtrusive for the user and time consuming since the main sources of knowledge come from documentation such as handbooks, guides or interview transcripts. This paper describes a tool for the automated logging of a planner’s actions while carrying out an inspection planning task in a virtual CMM measurement environment. The tool involves a combination of 3D motion tracking and a post-processor to decipher the context strategy in the form of an inspection plan. Various representations of a captured strategy will benefit CMM operators by providing them a tool for: understanding planning strategies, better training methods for inexperienced users and producing more efficient part programs in a shorter time.

Fixture Design Process Automation for Coordinate Measuring Machines: A Knowledge-Based Approach

2006 ◽  
Vol 526 ◽  
pp. 103-108
Author(s):  
J. Perez ◽  
R. Hunter ◽  
J.C. Hernandez ◽  
Antonio Vizan Idoipe
Keyword(s):  
Design Process ◽  
Manufacturing Process ◽  
Coordinate Measuring Machine ◽  
Fixture Design ◽  
Knowledge Based ◽  
Design And Manufacturing ◽  
Inspection Process ◽  
Measuring Machine ◽  
The Right ◽  
Inspection Fixture

Nowadays, the inspection process is an essential part of the manufacturing process, where a product is subjected to verification of the geometric features, dimensions and tolerance specifications with respect to the product design specifications. One of the most interesting topics in the automation of the inspection process is the right fixture design. In the fixture design process we have used the information provided by the part design and manufacturing process. However, the lack of integration and structuring of this information results in one of the most important problems, producing an increase in the time and cost implied in the development of the fixture design and its implementation. For this reason, this work presents a knowledge model for the inspection fixture design process for a Coordinate Measuring Machine (CMM), which allows the automation of the inspection fixture design process to be made easier, reducing time and cost associated to the inspection process and to the manufacturing process in general.

Assistance to Automatic Digitizing System Selection for 3D Part Inspection

2012 ◽  
Author(s):  
Nicolas Audfray ◽  
Charyar Mehdi-Souzani ◽  
Claire Lartigue
Keyword(s):  
Data Quality ◽  
Coordinate Measuring Machine ◽  
Sensor Technology ◽  
Novel Approach ◽  
Touch Trigger Probe ◽  
Measuring Machine ◽  
Part Inspection ◽  
Displacement System ◽  
System Selection ◽  
Different Characteristics

To perform 3D inspection, the most common digitizing system is a coordinate measuring machine (CMM) equipped with a touch trigger probe. Because of their large time consuming, a large number of industrial digitizing systems presenting different characteristics have recently emerged, but collected data quality strongly depends on the sensor technology combined with the associated displacement system. The works presented here focus on a novel approach that help users to select the most appropriate digitizing system in regard of the specification to be verified. This selection is performed in two steps: an ability selection that removes non convenient systems and a performance selection to select the system that provides sufficient data quality in the minimum time. This quality can be noise, trueness, density, depending on the specification to be verified. To store all necessary information, databases that contain intrinsic and qualified information have been developed. An example with GPS specifications is treated.

The Evolution of Tridimensional Metrology: The Era of Computer Aided Metrology

2019 ◽  
Author(s):  
Michael Machado ◽  
João Silva ◽  
João Sousa ◽  
André Filipe Pinto Vale
Keyword(s):  
Optical Sensors ◽  
New Technologies ◽  
Coordinate Measuring Machine ◽  
Data Systems ◽  
Measuring Process ◽  
Inspection Process ◽  
Measuring Machine ◽  
Machine Control ◽  
User Friendly ◽  
Great Development

Abstract The use of Coordinate Measuring Machine (CMM) provides an accurate and versatile solution for industrial metrology, that is being in use for decades. Although the electromechanical components of these machines have not suffered a great evolution in the last decade, the software used for controlling the CMM have suffer a great development in the last years, making them more user friendly, offering more powerful solutions, such as better CAD support and a better degree of automation, resulting in a faster measuring process. Together with the implementation of new non-contact technologies, like optical sensors for measuring purposes. Overall this resulted in a step further in the functions of a CMM, the measuring process becomes more automatic for either calculations and machine control. The use of new technologies also offers the possibility to work with a bigger amount of data, and virtual data systems turning the process more versatile and able to satisfy the actual demand of the industry, reducing the overall time and price of the inspection process.

Application of the sampling strategies in the inspection process

2017 ◽  
Vol 231 (4) ◽  
pp. 565-575 ◽  
Author(s):  
Syed Hammad Mian ◽  
Abdulrahman M Al-Ahmari
Keyword(s):  
Sample Size ◽  
Adaptive Sampling ◽  
Sampling Methods ◽  
Fundamental Problem ◽  
Coordinate Measuring Machine ◽  
Sampling Strategy ◽  
Point Distribution ◽  
Coordinate Metrology ◽  
Inspection Process ◽  
Measuring Machine

The selection of appropriate sample size and point distribution on the measuring surface has been a fundamental problem in the contemporary coordinate metrology. It is usually resolved by the users depending on their instinct or prior experience. As a result, inspection results have to be compromised between accuracy and measurement time. However, to deliver quality products in minimum time, effort, and cost, a reliable and an efficient sampling plan is mandatory. Although there have been a remarkable progress due to the development of various procedures for computing the sample size and selecting the appropriate point distribution, still users are inconversant with the characteristics and applications of the available sampling methods due to the absence of a proper review. Accordingly, a systematic review, giving insight into the various strategies available for the sample size and the point distribution, is presented. In this article, different algorithms and their application in the estimation of sample size and point distribution have been reviewed comprehensively. The classification of sampling methods and the importance of adaptive sampling have also been described. It has been concluded that the effectiveness of inspection process or the performance of coordinate measuring machine can be escalated through the application of a suitable sampling strategy. Therefore, the metrologists should either develop an effective method for defining sampling strategy or select the most suitable method from the available resources before carrying out the inspection process.

The Integration of Coordinate Measuring Machines within a Design and Manufacturing Environment

1993 ◽  
Vol 207 (2) ◽  
pp. 91-98 ◽  
Author(s):  
A J Medland ◽  
G Mullineux ◽  
C Butler ◽  
B E Jones
Keyword(s):  
Computer Aided Design ◽  
Coordinate Measuring Machine ◽  
Research Programme ◽  
Standard Test ◽  
Feature Identification ◽  
Manufacturing Environment ◽  
Inspection Process ◽  
Engineering Environment ◽  
Measuring Machine ◽  
Probe Calibration

The role of the coordinate measuring machine within the inspection process has changed throughout its brief development. With its integration with industrial computer aided design (CAD) systems, its role is to change yet again. This paper presents the difficulties and limitations of current practice and identifies the inputs and decisions that need to be made within an integrated manufacturing environment. A research programme was undertaken to investigate an approach based upon intelligent communications between systems. This led to the creation of a demonstration system that was employed in the measurement of industrial components. A case study, using a standard test block, is included to illustrate the processes undertaken. This includes feature identification, probe calibration and selection strategies and automatic re-routing to minimize changes in probes and orientations. It is proposed that the approach demonstrated can be incorporated within a concurrent engineering environment to provide feedback and information about machine adjustments through a constraint modelling process.

Sign in / Sign up

Export Citation Format

Share Document