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Herramienta computacional para diseño y análisis de transmisiones de engranajes

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20170228002
Publicado:
24/03/2017
Caducidad:
24/03/2018
Resumen:
Investigadores españoles de una universidad técnica han desarrollado una herramienta computacional de diseño y análisis de transmisiones de engranajes. Esta tecnología integra un generador virtual de engranajes con algoritmos para el análisis de contacto, análisis de holgura, diseño de forma libre de superficies dentadas de engranajes y generación automática de modelos de elementos finitos para análisis de tensiones. La universidad busca empresas o instituciones especializadas en diseño y fabricación de engranajes para colaborar en el desarrollo de estos engranajes mejorados. El objetivo es establecer acuerdos de licencia y cooperación en materia de investigación.

Details

Tittle:
Computational tool for design and analysis of gear drives
Summary:
Spanish researches from a technical university have developed a computational tool for design and analysis of gear drives. It is built around a virtual gear generator and includes computational tools for gear design, analysis, and optimization. Spanish technical university is looking for companies or institutions specialized in design and manufacture of gears to collaborate in the development of enhanced gear drives. License agreements and research cooperation agreement are sought
Description:
Spanish researches from a technical university have developed a computational tool for design and analysis of gear drives. The product is a computational tool for design, analysis and diagnosis of gear drives. It integrates a virtual gear generator with algorithms for tooth contact analysis, backlash analysis, freeform design of gear tooth surfaces, and automatic generation of finite element models for stress analysis.
The geometry of the gears is generated by cutting tools exactly as in real manufacturing and it integrates a complete set of cutting processes and cutting tools. The gear set types that are considered in the current state of development are: spur gear drives, helical gear drives, curvilinear gear drives, pinion-rack gear drives, internal spur and internal helical gear drives, straight and skew bevel gear drives, spiral bevel gear drives, beveled gear drives, crossed helical gear drives, hypoid gear drives, and planetary gear drives. Other types of gear drives may be developed on request.
The computational tool implements a variety of generating tools for each type of gear. The cutters may be designed with straight, parabolic or circular blade profiles. The generating tools that are considered in the current state of development are: rack-cutters, grinding disks, shapers, crown gears, face-milling cutters, face-hobbling cutters, skiving cutters. Other types of virtual cutters and virtual manufacturing processes may be developed on request.
The potential applications are those where gear transmissions are applied and an enhanced capacity of transmission power, an enhanced efficiency, an enhanced endurance, or a reduced level of noise and vibration, are sought. Potential sectors are the aeronautic (airplanes, helicopters, drones), marine (inboard and outboard motors), automotive (gas and diesel vehicles, electric vehicles) and rail sectors. The approaches that the computational tool integrates allow an optimization and an improvement of the designs respect to what gear standards can provide.
Shorten the period of development of a new gear drive due to the increased reliability that the virtual gear generator and the virtual testing of the gear drive provide.
A prompt diagnosis of a gear drive is also possible due to its capacity to incorporate measured coordinates on the gear tooth surfaces into the virtual gear geometry for its further virtual testing.
The computational tool can be adapted to the requirements that the company or the clients of the company demand for a fluid transfer of technology.

Researchers have worked in consulting activities and technical assistance for the design and optimization of gear transmissions with several companies. The types of applications where the researchers have experience are helicopter transmissions, motorcycle transmissions, outboard motor transmissions, transmissions for solar energy systems, and drone transmissions. In some applications the goal was the increment of the power capacity. In other applications the goal was to detect the origin of the noise and to provide a redesign of the gear tooth surfaces to reduce the level of noise directly from the source. In some other applications, reduction of noise and vibration and increment of the power capacity were the goals.

Spanish technic university is looking for companies or research institutions that are specialized in design and manufacture of gears. The University is interested in establishing license or commercial agreements with technical assistance. Research cooperation agreements are also desirable.

Advantages and Innovations:
The product is an innovative computational tool because it integrates advanced algorithms for design and analysis of gear drives. The computational tool has been developed considering the extension of all its capabilities on several gear set types. Its main features are:
- Capability to determine machine-tool settings that provide designs of gear drives with increased power capacity and reduced levels of noise and vibration.
- Capability to get free form gear tooth surfaces that allows the design of predefined flank modifications or any other microgeometry surface modification.
- Capability to obtain, from a measured coordinate machine, the actual gear tooth surface for further analysis and diagnosis of the gear drive.
- Capability to define the flank edge coordinates for the analysis of the gear tooth surfaces with their real boundaries.
- Capability to determine the effects of errors of alignment due to the shaft deflections on the contact behavior of the gear drive.
- Capability to correct the effects of errors of alignment on the contact behavior of the gear drive through the re-design of the gear tooth surfaces.
- Capability to get the most accurate mechanical behavior of gears through integrated algorithms for tooth contact and backlash analyses that provide estimation of contact pattern, transmission errors and backlash, all over one or two cycles of meshing.
- Capability to obtain the finite element model of the gear drive with their supporting shafts for the further analysis in commercial software.
- Capability for the post-processing of the results obtained from the finite element analysis that allows representation of the evolution of contact and bending stresses along one or two cycles of meshing and representation of the function of loaded transmission errors.
The computational tool is a virtual gear generator that integrates real cutting tools and real cutting processes where manufacturing errors may be taken into account.

Stage of Development:
Already on the market
IPs:
Copyright

Partner sought

Type and Role of Partner Sought:
Spanish technic university is looking for companies or research institutions that are specialized in design and manufacture of gears. The University is interested in establishing license or commercial agreements with technical assistance. Research cooperation agreements are also desirable.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
02001001 Impresión 3D
05001002 Química computacional y modelado