Multidisziplinäre Entwicklung eines robotergeführten Schwingungskompensators/Multidisciplinary Development of a Robot-guided Vibration Compensator

Konstruktion ◽  
2015 ◽  
Vol 67 (07-08) ◽  
pp. 86-90
Author(s):  
P. Kostka ◽  
R. Höhne ◽  
K. Holeczek ◽  
M. Krahl ◽  
W. Hufenbach
Keyword(s):  
Computer Aided Design ◽  
Milling Process ◽  
Industrial Robots ◽  
Large Variability ◽  
Reinforced Plastic ◽  
Finite Elemente ◽  
Milling Machines ◽  
Comprehensive Development ◽  
Efficient Alternative ◽  
Aided Design

Die gängigen Systeme zur spanenden Bearbeitung von groß-volumigen Bauteilen aus Faserkunststoffverbunden (FKV) basieren auf mehrachsigen Portalfräsanlagen. Eine kosten- und energieeffiziente Alternative bietet der Einsatz von In- dustrierobotern. Aufgrund der geringen Steifigkeit gängiger Roboter in Kombination mit den hochvariablen Schnittkräften bei der Bearbeitung von inhomogenen FKV, kann eine für Industriestandards hinreichende Bearbeitungsqualität bisher jedoch nicht erreicht werden. In diesem Artikel wird die Entwicklung eines adaptiven, modularen Schwingungskompensators zur Reduktion prozessbedingter Schwingungen vorgestellt. Dazu wurde eine iterative Simulationsprozedur durch Kopplung von rechnergestützem Design-, Finite-Elemente- und Mehr-körper-Modell angewendet und experimentell validiert.   The common systems for the machining of large-volume fibre-reinforced plastic (FRP) components are based on multiaxis portal milling machines. Cost and energy efficient alternative is the use of industrial robots. Due to the lower stiffness of common industrial robots combined with the large variability of cutting forces during processing of inhomogeneous FRPs, a satisfactory machining quality could not been achieved. This paper presents a comprehensive development of a modular self-adapting vibration compensator used for the reduction of milling process-born vibrations. Herein, an iterative simulation procedure using coupled Computer-Aided Design, Finite-Element and multibody models was applied and experimentally validated.

Dimensional Measurement of a Composite Ship Hull Using Coherent Laser Radar Yielding Submillimeter Results

2004 ◽  
Vol 20 (04) ◽  
pp. 232-239
Author(s):  
Steven D. Hand ◽  
David B. Ober ◽  
Bryan A. Bond ◽  
Edward A. Devine
Keyword(s):  
Computer Aided Design ◽  
Focal Length ◽  
Ship Hull ◽  
Laser Radar ◽  
Dimensional Measurement ◽  
Reinforced Plastic ◽  
Fiberglass Composite ◽  
Coherent Laser Radar ◽  
Composite Ship ◽  
Aided Design

The use and result of coherent laser radar as a noncontact method for the dimensional measurement of a ship hull is described. The hull, keel, and deck of a halfscale notional glass-reinforced plastic (fiberglass) composite hull test specimen are measured to submillimeter accuracy and then compared to the computer-aided design (CAD) model for conformance validation. Positives and negatives of this technology are the subject of this paper and include the high accuracy potential of the coherent laser radar, the minimal manpower requirements needed to achieve accurate results, and the limitation of the equipment's digital focal length and its effects on setup and data acquisition.

Determination of the Milling Conditions of a Pump Casing Cover Using a Parametric Designed Fixture Device

2015 ◽  
Vol 809-810 ◽  
pp. 890-895
Author(s):  
Ionuţ Ghionea ◽  
Adrian Ghionea ◽  
Saša Ćuković ◽  
Nicolae Ionescu
Keyword(s):  
Working Conditions ◽  
Computer Aided Design ◽  
Fem Analysis ◽  
Milling Process ◽  
Milling Tool ◽  
Cutting Force Components ◽  
Force Components ◽  
Aided Design ◽  
Tool Diameter

This paper presents an applicative methodology of parametric computer aided design using the CATIA v5 software to model and assembly a modular fixture device. The device is then used in the orientation and clamping a part of type casing cover which has a face machined by milling. Having a constructive solution of the fixture device, the next step is to simulate a milling process through a FEM analysis to identify the working conditions: milling tool diameter, number of teeth, cutting forces, required power of the machine tool etc. Some parameters were chosen according to various tools manufacturers catalogues and the cutting force components were determined experimentally in laboratory conditions. The analysis results show that in the FEM simulated milling process, in all the fixture device parts, some tensions cause displacements that have an influence over the casing cover surface roughness.

Robotics and the Automated Factory

1983 ◽  
Vol 27 (5) ◽  
pp. 391-391
Author(s):  
H. McIlvaine Parsons
Keyword(s):  
Human Factors ◽  
Computer Aided Design ◽  
Industrial Robots ◽  
Computer Assisted ◽  
Industrial Automation ◽  
Computer Aided ◽  
Cad Cam ◽  
Industrial Productivity ◽  
Aided Design ◽  
Hostile Environments

Although automation in manufacturing is by no means novel, only recently have such manifestations as increasing use of robots and CAD/CAM (Computer-Aided Design/Computer-Assisted Manufacturing) involved human factors scientists/practitioners. This panel session suggests how these can contribute to industrial productivity by examining and recommending suitable divisions of labor between automation and workers and ways to improve interactions between them. For the most part these considerations have been sadly lacking in both technical and popular discussions about industrial robots. Five panelist will approach them from two perspectives: actual human factors experience in industrial automation, including robotics, and applicable experience in closely related areas, such as the use of teleoperators in hostile environments (nuclear and battlefield).

CAD interface for automatic robot welding programming

2004 ◽  
Vol 31 (1) ◽  
pp. 71-76 ◽  
Author(s):  
J. Norberto Pires ◽  
T. Godinho ◽  
P. Ferreira
Keyword(s):  
Computer Aided Design ◽  
Industrial Robots ◽  
Robot Programming ◽  
Robot Motion ◽  
Motion Information ◽  
Detailed Data ◽  
Production Models ◽  
Set Up ◽  
Almost All ◽  
Aided Design

Industrial robots play an important role in industry, due to their flexibility. Many applications (almost all that require human intervention) may be performed with advantages by robots. Nevertheless, set‐up operations, necessary when changing production models, are still tricky and time‐consuming. It is common to have detailed data of working pieces in computer aided design (CAD) files, resulting from product design and project. This information is not used satisfactorily, or even not used at all, for robot programming. In this paper, we propose a solution capable of extracting robot motion information from the CAD data.

scholarly journals Computer Engineering Complete Dentures Workflow: Systematic Techniques Review

2021 ◽  
pp. 207-220
Author(s):  
Mohammed M. Al Moaleem ◽  
Omaima A. Al-layl ◽  
Manar A. Alhomood ◽  
Walaa A. Ageeli ◽  
Alzhouor A. Qsadi ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Computer Engineering ◽  
Alphabetical Order ◽  
Dental Practitioners ◽  
Computer Aided ◽  
Milling Machines ◽  
Cad Cam ◽  
Subtractive Manufacturing ◽  
Aided Design ◽  
Digital Denture

Background: The progress in the use of computer-aided design/computer aided manufacturing (CAD/CAM) to fabricat removable prosthodontic prostheses in dental clinics has been exponential. Commercially existing CAD/CAM denture techniques grow every year with increasing benefits to dentists and patients. Study Design: Systematic review. Aims: This review assessed and evaluated the different clinical production protocols of presently accessible CAD/CAM denture systems that offer decision support for dental practitioners. Methodology: Data   for the current object were collected by surveys from different companies manufacturing the Computer Engineering Complete Denture (CECDs). All related subjects published at the last 10 years were collected and included in this review. Techniques were arranged in alphabetical order, as follows. AvaDent Digital Dentures (Global Dental Science), Baltic Denture Creator System (Merz Dental GmbH), and Ceramill Full Denture System (Amann Girrbach AG) can manufacture denture fabrication in three visits, including a try-in step. DENTCA Digital Dentures (Whole You Nexteeth, Inc) can also perform this in three visits. The Wieland Digital Denture (Ivoclar Vivadent, Inc) can manufacture in four dental appointments. Recently developed VITA VIONIC Digital System (VITA Zahnfabrik, Bad Säckingen, Germany) can perform two-step CECD manufacturing. Results: Most of the systems involved subtractive manufacturing for the fabrication of their dentures and only closed systems. However, Baltic Denture System and VITA VIONIC material types are an open structure that allow users to choose among different handling protocols. It can be shared with several unclosed digital scanner, CAD software options, and milling machines. Conclusions: The six existing CECD fabrication systems offer many advantages. The decision on which technique to use may be contingent on the dentist’s prosthodontic expertise, patient output amount, and requirements concerning denture individualization.

Designing a Robot for Manufacturing Fiberglass Reinforced Plastic (FRP) Molded Grating

2020 ◽  
pp. 147-184
Author(s):  
Marcos Vinícius Ramos Carnevale ◽  
Armando Carlos de Pina Filho
Keyword(s):  
Manufacturing Process ◽  
Computer Aided Design ◽  
Time Analysis ◽  
Industrial Environment ◽  
Bill Of Materials ◽  
Reinforced Plastic ◽  
Technical Drawing ◽  
Computer Aided ◽  
Aided Design

The use of robotics in the industrial environment has, in general, very similar goals. Because of productivity requirements, or due to reliability, industries have been constantly equipping their floor with robots. In that sense, the chapter observed—in a fiberglass company—the chance of using a robot to execute a boring and repetitive task. The task mentioned is, actually, the manufacturing of fiberglass reinforced plastic (FRP) molded grating. To confirm the possibility of using a robot to this job, a cost and time analysis was made about the whole molded gratings manufacturing process. Afterward, research about robotics was taken in parallel with the conception of the robot (named “roving-robot”). Calculations were made to the mechanical project of the robot. Applying computer-aided design (CAD), technical drawing and bill of materials were generated to permit the robot assembling. All of these project steps are presented in this chapter.

Designing a Robot for Manufacturing Fiberglass Reinforced Plastic (FRP) Molded Grating

2022 ◽  
pp. 447-477
Author(s):  
Marcos Vinícius Ramos Carnevale ◽  
Armando Carlos de Pina Filho
Keyword(s):  
Manufacturing Process ◽  
Computer Aided Design ◽  
Time Analysis ◽  
Industrial Environment ◽  
Bill Of Materials ◽  
Reinforced Plastic ◽  
Technical Drawing ◽  
Computer Aided ◽  
Aided Design

The use of robotics in the industrial environment has, in general, very similar goals. Because of productivity requirements, or due to reliability, industries have been constantly equipping their floor with robots. In that sense, the chapter observed—in a fiberglass company—the chance of using a robot to execute a boring and repetitive task. The task mentioned is, actually, the manufacturing of fiberglass reinforced plastic (FRP) molded grating. To confirm the possibility of using a robot to this job, a cost and time analysis was made about the whole molded gratings manufacturing process. Afterward, research about robotics was taken in parallel with the conception of the robot (named “roving-robot”). Calculations were made to the mechanical project of the robot. Applying computer-aided design (CAD), technical drawing and bill of materials were generated to permit the robot assembling. All of these project steps are presented in this chapter.

scholarly journals PICN Nanocomposite as Dental CAD/CAM Block Comparable to Human Tooth in Terms of Hardness and Flexural Modulus

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1182
Author(s):  
Yohei Kawajiri ◽  
Hiroshi Ikeda ◽  
Yuki Nagamatsu ◽  
Chihiro Masaki ◽  
Ryuji Hosokawa ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Flexural Modulus ◽  
Precursor Solution ◽  
Milling Process ◽  
Human Tooth ◽  
Commercial Resin ◽  
Human Enamel ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

Polymer infiltrated ceramic network (PICN) composites are an increasingly popular dental restorative material that offer mechanical biocompatibility with human enamel. This study aimed to develop a novel PICN composite as a computer-aided design and computer-aided manufacturing (CAD/CAM) block for dental applications. Several PICN composites were prepared under varying conditions via the sintering of a green body prepared from a silica-containing precursor solution, followed by resin infiltration. The flexural strength of the PICN composite block (107.8–153.7 MPa) was similar to a commercial resin-based composite, while the Vickers hardness (204.8–299.2) and flexural modulus (13.0–22.2 GPa) were similar to human enamel and dentin, respectively. The shear bond strength and surface free energy of the composite were higher than those of the commercial resin composites. Scanning electron microscopy and energy dispersive X-ray spectroscopic analysis revealed that the microstructure of the composite consisted of a nanosized silica skeleton and infiltrated resin. The PICN nanocomposite block was successfully used to fabricate a dental crown and core via the CAD/CAM milling process.

Computer-Aided Design of Control Systems for Industrial Robots

1980 ◽  
Vol 13 (10) ◽  
pp. 201-204
Author(s):  
N.A. Lakota ◽  
Y.I. Rassadkin ◽  
V.A. Tchelishev
Keyword(s):  
Control Systems ◽  
Computer Aided Design ◽  
Industrial Robots ◽  
Computer Aided ◽  
Aided Design

scholarly journals Where Does CAM Stand?

2007 ◽  
Vol 129 (01) ◽  
pp. 30-32
Author(s):  
Jean Thilmany
Keyword(s):  
Computer Aided Design ◽  
Manufacturing Industry ◽  
Human In The Loop ◽  
Computer Aided ◽  
Milling Machines ◽  
Mold Making ◽  
Molded Parts ◽  
Cad Models ◽  
Manufacturing Software ◽  
Aided Design

This article describes various engineering ways to use computers in manufacturing industry. Streamlining computer-aided design (CAD) and computer-aided manufacturing (CAM) handoff has long been the dream of engineering organizations that face handoff issues every day. The company, Protomold Co. Inc., ties CAD directly with CAM, to do away with requiring a human in the loop. It makes plastic injection-molded parts from customers’ CAD models. A Minnesota company has nearly automated its mold making. Software designs the mold automatically and automatically commands milling machines. The article also highlights that CAM systems of the future should include easy workarounds that any company could use to customize the software. Like other computer-aided engineering applications, manufacturing software is being pushed forward, although innovation and research is mainly the purview of academics. Researchers are focusing on considering rapid prototyping for making CAD and CAM work together in future.

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