3D CAD model reconstruction and fast prototyping of rotational parts: a reverse engineering approach

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Boppana V. Chowdary ◽  
Deepak Jaglal
Keyword(s):  
Reverse Engineering ◽  
Surface Model ◽  
Cad Model ◽  
Model Reconstruction ◽  
Cnc Machine ◽  
Content Type ◽  
3D Cad ◽  
Fast Prototyping ◽  
Computer Aided ◽  
Rotational Parts

Purpose This paper aims to present a reverse engineering (RE) approach for three-dimensional (3D) model reconstruction and fast prototyping (FP) of broken chess pieces. Design/methodology/approach A case study involving a broken chess piece was selected to demonstrate the effectiveness of the proposed unconventional RE approach. Initially, a laser 3D scanner was used to acquire a (non-uniform rational B-spline) surface model of the object, which was then processed to develop a parametric computer aided design (CAD) model combined with geometric design and tolerancing (GD&T) technique for evaluation and then for FP of the part using a computer numerical controlled (CNC) machine. Findings The effectiveness of the proposed approach for reconstruction and FP of rotational parts was ascertained through a sample part. The study demonstrates non-contact data acquisition technologies such as 3D laser scanners together with RE systems can support to capture the entire part geometry that was broken/worn and developed quickly through the application of computer aided manufacturing principles and a CNC machine. The results indicate that design communication, customer involvement and FP can be efficiently accomplished by means of an integrated RE workflow combined with rapid product development tools and techniques. Originality/value This research established a RE approach for the acquisition of broken/worn part data and the development of parametric CAD models. Then, the developed 3D CAD model was inspected for accuracy by means of the GD&T approach and rapidly developed using a CNC machine. Further, the proposed RE led FP approach can provide solutions to similar industrial situations wherein agility in the product design and development process is necessary to produce physical samples and functional replacement parts for aging systems in a short turnaround time.

scholarly journals The use of 3D scanning in reverse engineering

Mechanik ◽  
2019 ◽  
Vol 92 (3) ◽  
pp. 194-196
Author(s):  
Jerzy Bochnia
Keyword(s):  
Reverse Engineering ◽  
3D Scanning ◽  
The Body ◽  
Real Object ◽  
Surface Model ◽  
Cad Model ◽  
Master Cylinder ◽  
3D Cad ◽  
Geometrical Dimensions

The procedure of building a surface model and inspecting its dimensions by scanning a real object is discussed. The body of a two-part master cylinder was scanned. Geometrical dimensions of the obtained surface model were inspected. Based on obtained data, a 3D CAD model of the scanned object was developed.

scholarly journals Automatized Evaluation of Students’ CAD Models

2021 ◽  
Vol 11 (4) ◽  
pp. 145
Author(s):  
Nenad Bojcetic ◽  
Filip Valjak ◽  
Dragan Zezelj ◽  
Tomislav Martinec
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Application ◽  
Test Cases ◽  
Cad Model ◽  
Computer Solution ◽  
3D Cad ◽  
Computer Aided ◽  
Cad Models ◽  
Aided Design

The article describes an attempt to address the automatized evaluation of student three-dimensional (3D) computer-aided design (CAD) models. The driving idea was conceptualized under the restraints of the COVID pandemic, driven by the problem of evaluating a large number of student 3D CAD models. The described computer solution can be implemented using any CAD computer application that supports customization. Test cases showed that the proposed solution was valid and could be used to evaluate many students’ 3D CAD models. The computer solution can also be used to help students to better understand how to create a 3D CAD model, thereby complying with the requirements of particular teachers.

ModelAngelo: A Rapid Prototyping System for Polystyrene

2002 ◽  
Author(s):  
Ahmad Smaili ◽  
Ramsey Hemadeh ◽  
Firas Zeineddine ◽  
Barbar Akle
Keyword(s):  
Rapid Prototyping ◽  
Robotic Arm ◽  
Cad Model ◽  
Cnc Machine ◽  
3D Cad ◽  
Advantages And Disadvantages ◽  
Heated Wire ◽  
Software And Hardware ◽  
Rapid Prototyping System

This paper presents a new complete CAD-driven rapid prototyping system for polystyrene. ModelAngelo, as it is called, consists of six subsystems featuring hardware and software. The system utilizes a virtual 3D CAD model to produce a set of commands used to control a 5-axis CNC Machine to move a heated-wire tool into a block of polystyrene to form the desired surface. The ultimate goal of ModelAngelo is to reach the stage of “what you see is what you get”. An overview of ModelAngelo system is first presented followed by a detailed discussion of ModelAngeloSoftware. The various mechanical subsystems responsible for realizing the final product are then described. Advantages and disadvantages of several tooltip designs are discussed and the best solution is selected. The main features of the robotic arm, which carry the tooltip is also discussed in detail. Finally ModelAngelo controller that manages the interaction between software and hardware is briefly highlighted and possible applications of ModelAngelo are suggested.

Automatic CAD Model Reconstruction from Multiple Point Clouds for Reverse Engineering

2002 ◽  
Vol 2 (3) ◽  
pp. 160-170 ◽  
Author(s):  
Jianbing Huang ◽  
Chia-Hsiang Menq
Keyword(s):  
Reverse Engineering ◽  
Boundary Surface ◽  
Point Clouds ◽  
Geometric Feature ◽  
Multiple Point ◽  
Reconstruction Method ◽  
Cad Model ◽  
Model Reconstruction ◽  
Triangle Mesh ◽  
Novel Technologies

In this paper, a systematic scheme is proposed and novel technologies are developed to automatically reconstruct a CAD model from a set of point clouds scanned from the boundary surface of an existing object. The proposed scheme is composed of three major steps. In the first step, multiple input point clouds are incrementally integrated into a watertight triangle mesh to recover the object shape. In the second step, mesh segmentation is applied to the triangle mesh to extract individual geometric feature surfaces. Finally, the manifold topology describing the connectivity information between different geometric surfaces is automatically extracted and the mathematical description of each geometric feature is computed. The computed topology and geometry information represented in ACIS modeling kernel form a CAD model that may be used for various downstream applications. Compared with prior work, the proposed approach has the unique advantage that the processes of recognizing geometric features and of reconstructing CAD models are fully automated. Integrated with state of the art scanning devices, the developed model reconstruction method can be used to support reverse engineering of high precision mechanical components. It has potential applications to many engineering problems with a major impact on rapid design and prototyping, shape analysis, and virtual reality.

scholarly journals 3D CAD model reconstruction of a human femur from MRI images

2013 ◽  
Vol 4 (4) ◽  
Author(s):  
Mohammed RADOUANI ◽  
Youssef AOURA ◽  
Benaissa EL ◽  
Latifa OUZIZI
Keyword(s):  
Cad Model ◽  
Model Reconstruction ◽  
3D Cad ◽  
Human Femur

Designing of a Twin Tube Shock Absorber

2018 ◽  
pp. 83-104 ◽  
Author(s):  
Dheeman Bhuyan
Keyword(s):  
Reverse Engineering ◽  
Shock Absorber ◽  
Performance Enhancement ◽  
Development Stage ◽  
Cad Model ◽  
3D Cad ◽  
Piston Valve ◽  
And Performance ◽  
The One ◽  
Selection Of

Reverse engineering has become the one of the most relevant concepts in modern design doctrines. Advances in technology demand shorter lead time in the overall product development stage, especially in the automobile sector. Hence as a study in reverse engineering, the author has reverse engineered a twin tube shock absorber. The process involved the obtaining of subassemblies of the damper mechanism to generate a 3D CAD model of the damper in PTC CREO 2.0. The model was used to conduct static structural and CFD analysis of the same using ANSYS 15.0 Workbench. The data obtained was used as the datum for the design modifications and performance enhancement of the part. It was seen that the design of the piston valve was optimum hence modifications to the base valve were done. Following the generation of the datum, similar analyses were conducted on the modified assemblies. The results were compared to the datum for the selection of the most appropriate design. Four designs are analyzed and compared with the datum and the set with four orifices in the valve disk was found to be optimum.

scholarly journals Application of Computer-Aided Reverse Engineering System in the Design of Orthotic Boots for Clubfoot Patients

2021 ◽  
Vol 56 (3) ◽  
pp. 405-418
Author(s):  
P.K. Fergiawan ◽  
P.W. Anggoro ◽  
Rifky Ismail ◽  
J. Jamari ◽  
A.P. Bayuseno
Keyword(s):  
Reverse Engineering ◽  
Daily Activities ◽  
Engineering System ◽  
Base Surface ◽  
3D Mesh ◽  
3D Cad ◽  
Shoe Last ◽  
Computer Aided ◽  
Design And Manufacture ◽  
Cam Software

Clubfoot is an abnormal foot as a congenital disability in which one or both feet appear rotated inward and downward. In some cases, the foot and leg sizes may be smaller compared to each other. Accordingly, there is a need for customized shoes designed for clubfoot patients who has difficulty in wearing regular shoes to carry out their daily activities. This study examines using computer-aided reverse engineering system technology to design and manufacture customized boots with specific sizes and shapes. Reverse engineering with a handy scan 3D scanning tool with a tolerance of 0.001 mm was implemented to obtain 3D mesh data of the patient’s clubfoot (male with 65 years). The Curve Base Surface Modeling method provided 3D-CAD drawings of the insole and shoe, the last models, precisely and following the size and shape of the patient’s foot. This CAD data could be appropriately transferred to CNC machines and PowerMill CAM software to obtain patterns of insole and shoe-last from EVA foam rubber and wood. Both ways were well fitted with leather by a shoemaker into a pair of customized clubfoot boots. The field boot-wearing test used feedback from the clubfoot patient wear-testers to assess the functionality and acceptability of the boot products. In this way, the club foot patient can able to perceive wearing comfortably and perfectly. In the field boot-wearing test, the patient could walk at a speed of 83.1% -91.7% faster (2 - 5 minutes/foot) than that when the patient wears the old boot design model. Significantly, the present approach may add knowledge theoretically and practically to use CARE system-based technology in treating clubfoot patients with the need for custom shoes.

Experimental Investigation of Wing Accuracy Quantification using Point Cloud and Surface Deviation

2021 ◽  
Vol 4 (2) ◽  
pp. 13-20
Author(s):  
Mehmood Ahmad ◽  
Sheharyar Nasir ◽  
Zia Ur Rahman ◽  
Shuaib Salamat ◽  
Umar Sajjad ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
Data Acquisition ◽  
Laser Scanning ◽  
Coordinate Measuring Machine ◽  
Surface Generation ◽  
Free Form ◽  
Cad Model ◽  
3D Cad ◽  
Deviation Analysis ◽  
Measuring Machine

A rapidly advancing lean production industry demands quick manufacturing solutions with greater precision and accuracy. This paper proposes a framework for the accurate quantification of a die-casted wing using laser scanning and reverse engineering technique. In this technique, the wing upper and lower surfaces are scanned using a Coordinate Measuring Machine (CMM). This scanned data is then imported into CAD software to generate the surface using Free Form Reverse Engineering (FFRE). The model fitness test patronizes the curve fitting used for the surface generation. The generated surface and the original 3D CAD model are investigated using deviation analysis for inaccuracies originating due to manufacturing and data acquisition. The wing is further analyzed by the point data to 3D CAD model deviation analysis. The methodology adopted significantly minimizes the data acquisition and data processing error allowing deviation to be solely traced back to the manufacturing technique.

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