Método Assistido por Computador e Prototipagem Rápida para o Fabrico Personalizado de uma Prótese de Dedo em Banda de Silicone

The fabrication of digital prostheses has acquired growing importance not only for the possibility for the patient to overcome psychosocial trauma but also to promote grip functionality. An application method of three dimensional-computer-aided design technologies for the production of passive prostheses is presented by means of a fifth finger amputee clinical case following bilateral hand replantation.<br />Three-dimensional-computerized tomography was used for the collection of anthropometric images of the hands. Computer-aided design techniques were used to develop the digital file-based prosthesis from the reconstruction images by inversion and superimposing the contra-lateral finger images. The rapid prototyping manufacturing method was used for the production of a silicone bandage prosthesis prototype. This approach replaces the traditional manual method by a virtual method that is basis for the optimization of a high speed, accurate and innovative process.<br /><strong>Keywords:</strong> Reconstructive Surgical Procedures; Fingers; Computer-Aided Design; Prostheses and Implants; Silicones.

Design for Rapid Prototyping, Manufacturing and Tooling: Guidelines

The design is an important step in the development of a product or component; many important decisions affecting the final cost and manufacturability of the product are made at this stage. Therefore several design guidelines for manufacturing and assembly (DFMA), ergonomics, maintenance, standardization, against corrosion, risk minimization, recycling, among others, have been proposed in the literature. The aim of these design guidelines is to provide designers with guidance to reduce costs, manufacturing difficulties, and increase the lifetime of a product. The use of new manufacturing techniques such as rapid prototyping, manufacturing and tooling (RPM&T) are increasing in the industry to speed up the design and development of products. However, there are not design guidelines for these emerging technologies. This paper focuses on establishing design for rapid prototyping, manufacturing and rapid tooling (DFRPM&T) guidelines. These guidelines are based on reviews and analysis of the operating principle, materials, capabilities and limitations of current commercially available RPM&T technologies. The proposed design guidelines are classified into three types: (1) design for rapid prototyping according to the geometric characteristics of the part, (2) part quality requirements, and (3) part costs and sustainability. Important features such as support structures, overhangs, rounded, knife edges, part orientation, path planning, distortion, shrinkage, warping, accuracy, stability, part post-processing, part cost and environmental resistance are considered in the proposed design for RPM&T guidelines.

Design for the Controller of Desktop 3D Printer

3D printing, is a kind of rapid prototyping manufacturing, fabricating expected objects by way of cumulative constructed layer by layer, based on digital model files and powdered materials used. In this paper, the controller of desktop 3D printer is designed and carried out, both from the hardware and software part. For hardware design, a 32-bit ARM core microcontroller, STM32F103VB is selected as the core, supplemented by stepper motor driver chips, thermocouple digital converters and other devices, which build a desktop 3D printer controller panel. For software design, referred to open-source design being based on the AVR microcontroller, the whole process of 3D printing is accomplished by programming the ARM core microcontroller.

The Research on the Ashtray Designed with UG NX and Manufactured Basing on Rapid Prototyping Manufacturing

3Dprinter is a popular topic today, Designers, engineers and educators-thousandsof professionals rely on 3D printer to test and perfect their work with 3Dmodeling. This paper described the mature rapid prototyping manufacturing in present-day, design of ashtray model based on UGNX, describedthe whole process of using the CatalystEX to automatic slice,how does ashtray model print using the uPrint 3D printer.

Rapid Prototyping Machine in Teaching Practice and Application

In order to adapt need of market economy development,to shorten the product development cycle,improve the ability to manufacture complex parts,rapid prototyping manufacturing technology to become a new direction in the development of the manufacturing industry,many colleges and universities have carried out the rapid prototyping manufacturing research, mechanism, material professional college students will become the main force to promote technology applications.Will therefore rapid prototyping machines used in teaching training segment, to standardize the experimental behavior of the students, played an important role in the overall quality of training of students and improve ability.