When starting a new Enventive Concept project, the user faces an important decision: “Should I start from a blank sheet or import my existing geometry from CAD?”
Actually, four different approaches are possible:
- Starting from scratch
- Importing geometry from CAD and constraining the functional geometry
- Importing and automatically constraining CAD geometry
- Mixed approach
1- Starting from scratch
Following this approach, the user manually enters all required functional information in a new Enventive Concept model. Rather than representing all the elements in the CAD model, the user only needs to enter the functional elements for the specific GD&T study. The following figure illustrates this approach for studying the functional elements of a brake cylinder:
At first sight, it may seem that this approach is not the most efficient method to create a new project. Indeed, it is not the preferred approach among many new Enventive Concept users. However, we see that more advanced users tend to use this approach, as they create models earlier in the design process, before CAD models are finalized.
Pros: Quick to enter only functional geometry + the user must think about each dimension and its effect on the product’s design
Cons: Lack of visual information
2- Importing “locked” geometry from a CAD model
One of the drawbacks of the previous approach is the lack of visual information that helps product managers, colleagues, clients, suppliers, etc. to quickly understand the model. To provide this visual information in an Enventive Concept model, users can import geometry from an existing CAD model using a STEP/IGES file.
Using this approach, the user exports a 2D section of the part to a STEP/IGES file, and then imports the file into Enventive Concept as “locked” geometry, which essentially means that the geometry does not include any dimensions and acts as if it’s fully constrained (which essentially means that the geometry does not include any dimensions or constraints and the geometry is ignored by the Solver). The user “unlocks” and dimensions only the functional entities, leaving the rest of the geometry that has only a visual purpose “locked.” The following video illustrates this approach using the same CAD model as in our previous example:
Pros: Visual aid to assist in understanding the part + reuse of existing CAD data + more intuitive for new Enventive Concept users
Cons: Exporting an appropriate view of the geometry from the CAD model may be more time-consuming than just sketching the functional geometry from scratch for experienced Enventive Concept users
3- Importing and automatically constraining CAD geometry
Enventive Concept includes an automatic constraining wizard that automatically assists the user in constraining imported CAD files. This tool can save considerable time applying the datums, dimensions and constraints needed to fully define an imported model.
Pros: The wizard helps inexperienced users + quickly performs repetitive tasks
Cons: Not as flexible as other methods
4- Mixed approach
This method is an alternative mixed approach that uses the information of the CAD file as a “background” image. Then, the user draws the functional geometry on top of that image.
Pros: Suitable for very large models with only a few functional entities (e.g., complex plastic injected parts)
Cons: All the constraints applied to the background image must be removed; otherwise, the tolerance analysis results could be incorrect
The best approach to choose depends on the complexity of the model and the user’s own preferences.
In all cases, Enventive Concept is not just another verification tool for use at the end of the design cycle, but rather a conceptual design tool that helps users discover issues before detailed design begins.
Enventive® Concept v4.2 Delivers New Modeling and Analysis Capabilities to Designers and Engineers
LANCASTER, Mass., January 21, 2020 —Enventive Engineering, Inc. is pleased to announce the release of Enventive® Concept v4.2, mechanical design and tolerance analysis software. Enventive Concept® helps you bring better products to market faster and at lower cost by identifying and optimizing critical parameters early in the design process.
Enventive® Concept v4.2 introduces many new features and enhancements, including:
- Tolerance analysis enhancements – Reports are now generated in an integrated spreadsheet, which replaces Excel
- New optimization tool
- Support for DIN 16742, ISO 2768, and ISO 8062 tolerance standards
- Ability to assign custom Cp values for “Projected” tolerance results, based on failure mode severities
- Monte Carlo enhancements – Pearson “goodness-of-fit” distribution analysis for results and new distribution types for contributors
- Improved method for combining duplicate contributors
- New trim/extend functionality
- Ability to reorder and delete layers
- Concentricity tolerances are displayed as Feature Control Frames (FCFs)
- Model Explorer now displays Degrees of Freedom for each instance in an assembly model
- User-interface enhancements – Scalable icons and fonts to improve support for high-resolution monitors
- Improved support for circular datums
- Redeveloped Mirror tool
- Improvements to Position tolerances for Cylindrical/Rectangular Features of Size
- Additional support for Enventive 360
For complete details on this release, current customers can refer to the release notes included with Enventive® Concept v4.2 . To request enhancements for future releases, please contact us.
Enventive Engineering, Inc., Gives Flagship Product a New Name
LANCASTER, Mass., January 30, 2018—In response to adding two new products in 2018, Enventive Engineering, Inc., is giving its once-solo product—known simply as Enventive software—a new name: Enventive Concept.
Ralph Gifford, President and co-founder of Enventive Engineering, Inc., explained, “We’re making this change in response to Enventive Engineering’s recent growth. With two new products joining our lineup, our flagship product needs a name that identifies its fit in the product suite.” Enventive’s new product offerings, Enventive 360 and Enventive 3D&T, were officially announced at the Enventive User Group Meeting in October of last year. The initial production release of Enventive 360 is imminent, and Enventive 3D&T is soon to begin beta testing.
Strategically used during the conceptual design stage of product development, “Concept” is an apt moniker. “Along with its new name, Concept is gaining a new identity as an intrinsic part of a more comprehensive solution,” Gifford said.
“We’re entering into a new phase of growth,” Gifford continued, “Growth that has sprung organically from actively encouraging progressive change in the industry and supporting our customers’ goals to improve their entire engineering process, and ultimately their success.”
Enventive is continuing to make enhancements to Enventive Concept to respond to customers’ immediate needs as well as integrate it with their new products. Version 4.1.5, which primarily fixes issues found in 4.1.4, has just been released, and another new version of Enventive Concept that includes many enhancements and fixes based on customer feedback will be released later this year.
About Enventive Design Optimization Software
Enventive is a mechanical engineering design system that takes mechanical designs through every phase, from initial concept, to preliminary design, to variational analysis and optimization.
By combining geometric, mathematical, and kinematic modeling with automated variation analysis, optimization capabilities, and GD&T simulation, Enventive enables engineers to simultaneously optimize critical parameter values and their tolerance limits, giving them greater insight into their products.
Enventive helps engineers understand how real world variances affect design before detailed design occurs, resulting in significant savings in time, effort and money.
About Enventive Engineering, Inc.
Enventive Engineering, Inc., is a privately held Delaware corporation, founded in 2002.
Enventive Engineering is dedicated to helping mechanical engineers succeed in the areas of design, analysis, and optimization by providing them with technologies that enable reliable identification of potential design problems early in product development.
Enventive Engineering develops, maintains and supports software distributed to companies in more than 30 countries representing a variety of fields, including automotive, aerospace/defense, medical devices, electrical components, office equipment, and appliances.