Romax Gear Design Software Free Download
Clotilde Wilks
A streamlined interface for loading and concept level helical gears, allowing the definition of concept level asymmetric gears and a comprehensive gear design and rating approach for detailed gears considering manufacturing tolerances
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The project presents a two speed transmission. Design requirements for the transmission state that it must have two forward gears and two reverse gears, be compact, be quiet, and have a collinear design. Also, the design must last for 1600 hours at each gear for a combined life of 6400 hours between 750 and 1250 rotations per minute (RPM) with a power input of 32 horsepower. The output shaft must rotate at 85% (1%) and 65% (1%) of the input speed in the input direction, and 60% (1%) and 50% (1%) of the input speed in the opposing direction. The design chosen consists of an input shaft, counter shaft, idler shaft, and an output shaft assemblies which were all designed using helical gears, tapered roller bearings, and radial ball bearings. Validation of the gears, bearings, and shafts were done using RomaxDesigner software. Analysis of the duty cycle summary for the final design shows design failure shortly after the required combined life of 6400 hours.Read less
With the right tools, the concept design stage can be an opportunity to analyse ideas, gather insights and even validate requirements. Romax Concept empowers experts and non-experts to get the most out of the initial phases of a design project.
Import existing drivetrain models via REXS, export to CAD to save time tweaking 3D geometry after each design change, export to ADAMS for multi-body dynamics simulation, and export to other Romax products for further analysis and detailed component design.
Romax Concept is the true starting point for model creation, with an incredibly easy to use interface that anyone can learn in a few hours. Build parametric models of any full drive system rapidly (in minutes), with a drag-and-drop 2D modelling interface and a live reflection of the model in 3D visualisation.
Looking for inspiration?
A database of design templates is available in Romax Concept. Create a new model from any template to save time. Templates can be scaled up and down to match your application. Users can save custom templates for common layouts to save modelling time and to re-use designs in other drivetrain engineering projects.
Are your drivetrain designs in another software package?
Romax Concept supports the REXS file format for importing and exporting models. Bring your gear geometry or gearbox design into Romax Concept to analyse straight away without re-modeling. Then, convert to Adams for multi-body dynamics simulation with ease.
Are you spending a lot of time tweaking a drivetrain CAD model?
To facilitate using Romax Concept alongside CAD, transferring 2D and 3D geometry between CAD and Romax Concept could not be easier. Automatically generate CAD geometry from your Romax Concept model in seconds, eliminating the need to tweak CAD following a design change. With Romax CAD Fusion, models can be imported into Romax Concept from all major CAD packages. Import structures such as housings, mounting points, controls and more as reference geometry for packaging studies in Romax Concept.
Romax Concept offers a range of analyses suited to the early design stage, so you can get rapid insights on your design concepts and make well-informed engineering decisions. Analyses run in seconds and key results can be reported in simple, sharable formats.
As with the rest of the Romax portfolio, the simulation considers the full system holistically, including the cumulative effect of the complex interactions between all components, deflections, loads, stresses and misalignments.
Once you have got the answers you need from Romax Concept, and have completed the design iteration process, you can move it into the rest of the Romax portfolio for more in-depth assessment of durability, NVH and efficiency performance.
Creating models in Romax Concept is perfect for initial assessment of shaft centre distancing, gear sizing, packaging space, gear selection and simultaneous ratio optimization of individual gearsets. Users can iterate these activities to meet a number of different competing requirements.
Designing gears in Romax Concept is easy with its intelligent set of design tools. The staged gear design process in Romax Concept guides gear definition from simple speed ratios, to basic gear teeth/module, to fully defined gear set geometry.
For ratio selection, the saw profile diagram helps to achieve equally spaced gear ratios for a more continuous vehicle acceleration and better fuel economy at all speeds. The ratio optimisero ptimises the gearbox ratios and required gear size, according to targets specified, which can be either user-inputs or automatically generated.
For gear sizing, the K factor sizing method intelligently sizes parallel and planetary gears for a given application based on benchmarked data. Toothless gears can be used to set up load cases and estimate packaging concerns.
For gear rating, Romax Concept can automatically estimate your gear geometry based on size, ratio, and module to allow for preliminary rating. International rating standards are included in Romax Concept for assessing damage/life, power losses and more.
For gear geometry, the gear set designer is a powerful, automated multi-attribute gear macro geometry optimisation tool. Specify design criteria, generate gear designs, rank geometries by analysing and scoring their safety factors, transmission error and more.
Select from a wide range of motor templates and perform an initial sizing in seconds with just a small number of parameters such as rated power, maximum torque, and speed, instantly evaluate the motor and see the calculated torque and efficiency. Import the motor geometry into Romax Concept with a single-click to analyse side-by-side with the gearbox.
Calculate the electromagnetic losses and generate a motor efficiency map for your chosen design. This can be imported into Romax Concept for a complete electro-mechanical efficiency map of the gearbox and motor together.
Through quick sizing studies like this, a motor designer can get an improved understanding of the performance, torque density, cost and efficiency of the motor. Electric motor design is easy and integrated into Romax Concept with JMAG-Express Online, and through integration with major electromagnetic packages for motor geometry import.
To select the optimum drive system for your application, engineers have to get the balance right between size versus safety factor, efficiency versus complexity, cost versus durability, and many more trade-offs.
Romax Concept allows full driveline performance and efficiency predictions to be easily performed on electric powertrain designs using vehicle, transmission and electric machine data. This enables the efficiency and performance of different powertrain concepts to be assessed whilst considering the most important tradeoffs when selecting the optimum motor/transmission combination.
Romax Concept contains a set of analyses from the entire Romax suite, offering drivetrain simulation insights in a range of areas such as durability, NVH, efficiency, packaging, cost, weight and more.
Romax Concept is part of the Romax portfolio, which means you can use the same model in common file formats for multi-attribute, multi-fidelity, full system design, simulation and optimization. Our product range starts with Romax Concept, the perfect platform for early stage investigation and design space exploration, and extends through Romax Enduro, Romax Spectrum and Romax Energy for analysis and optimization of durability, NVH and efficiency within a single model. Romax Spin adds world-leading bearing design and analysis capabilities, while Romax Evolve provides the perfect tool for electric machine designers looking to test out the structural and NVH performance of their motor.
Engineers involved in the development of geared electro-mechanical systems have ever-evolving requirements when it comes to the use of design and analysis software. These include the need for improved modelling and analysis productivity with reduced modelling errors, higher fidelity simulations delivering increased accuracy, and the need for a greater breadth of capabilities to enable the design of new applications using a wider range of materials. Gears are some of the most complex, yet critical components in these systems and are a constant topic of discussions and area of innovation.
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