Mechanical Tolerance Analysis for Design Engineers of Rigid Structures and Mechanical Assemblies
3DCS Mechanical Variation Modeler Software is designed to be easy to use with Joints and Constraints
3DCS Mechanical Variation Modeler is built on the 3DCS platform incorporating 3DCS Mechanical Modeler into its base functionality to model complicated linkages and mechanical assemblies with easy to apply Moves, Joints, and Constraints.
By modeling the assembly process, and determining the risk and source of part failures, manufacturers can optimize their design to account for both process and part variation, reducing non-conformance, scrap, rework, and warranty costs.
3DCS Mechanical Variation Modeler - What is it?
3DCS Mechanical is a standalone or CAD integrated application, designed as a less complex tool compared to 3DCS Variation Analyst, and focused on mechanical joints and constraints to make modeling more intuitive for mechanical assemblies.
3DCS Mechanical Variation Modeler, just like 3DCS Variation Analyst, gives outputs based on part and process variation. These can be input in a variety of ways, from CAD based PMI, extracting Joints and Constraints from CAD, to selecting feature and point based options in the software. The final results are shown as statistical (Monte Carlo) and mathematics (Sensitivity) based outputs with toggle-able metrics including Cpk, Ppk, ranges, percent out of specification and a variety more.
3DCS Mechanical Variation Modeler Value:
- Model complicated linkages and mechanical assemblies
- Combine 3D Variation and Kinematic Mechanical Analysis
- Depict variation on kinematic assemblies through their range of motion in place of fixed locations
- Simplify modeling with access to a library of common joints and constraints
Model Part and Process Variation - How does it work?
3DCS Mechanical Variation Modeler uses two methods of simulation;
These analyses determine both the sources of variation as well as potential build issues in the product.
As a mechanical and kinematic based tool, 3DCS Mechanical utilizes the same joints and constraints as the 3DCS add-on module Mechanical Modeler. These functions allow the modeling of mechanical movements and analysis through a range of motion to determine the effect of variation on product function.
Modeling the build process in addition to their part tolerance stack-up , users can determine how the variation will affect the assembly. This together creates a true Digital Twin that can be used to make decisions about design changes and tooling while reducing scrap and rework.
Find Design Defects Early in the Product Lifecycle
It is well known that the earlier in the Product Lifecycle an issue is found, the cheaper it is to fix. When a product is still in the digital design phase, an engineering change can be as simple as a click of a mouse. However, as soon as the product gets into the customers' hands though, a simple engineering change may mean recalls and warranty claims. This costs exorbitantly more than updating a CAD model.
Creating digital twins for tolerance analysis has become an important part in many OEM's product development process. CAD simulation and analysis gives engineers the opportunity to validate their assembly process and tolerances early in the Product Lifecycle, and to make relevant, inexpensive changes before tools are cut. Simulation, optimization, and validation in the digital environment has been proven to save millions of dollars in production costs, and this number only grows as both the tools and the users become more advanced.
Advantages during the pre-production phase are root cause analysis - only recently we've actually really started using the software to root cause the problems. We've found that looking at the contributor lists, for example, really help us get to the root cause of the problems and propose solutions.
Laurence Allmark, Senior New Product Quality Engineer, McLaren Automotive