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      Produce higher-quality, cost-effective products across the enterprise.

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      Build better products and processes across the enterprise. 

      Robust solutions that streamline and enhance the mechanical variation management process.

      Our tolerance analysis and GD&T solutions  unite the ideal world of product design with the real world of manufacturing and assembly—where mechanical variation has a significant impact on product cost.



        Tolerance Analysis

        Predict, manage, and optimize mechanical variations.


        Understand permissible variation earlier in the design process.

        Model-Based Definition

        Optimize tolerances within 3D models.

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          We publish frequently on mechanical variation management, GD&T best practices, and more.

          Mechanical Variation Analysis Enhances the Precision of the Zero-Degree Wrench

          Mechanical Variation Case Study

          Mechanics and do-it-yourselfers are always looking for an easier-to-use, more effective tool for the job. Starting with a mechanism concept that has been available for over 70 years, our customer was able to manage mechanical variation using CETOL 6σ in order to perfect the cam-roller design and deliver a zero-degree wrench to the professional and consumer market.Mechanical-variation-case-study
          Conventional socket wrenches require 10 to 12 degrees of travel in order to engage the gears. A  12 point box-end wrench requires 30 degrees. The zero-degree design does not have a minimum travel requirement and thus allows for use in very tight spaces. However, one of the main design challenges for this type of wrench is its performance while under load. If the relationship between a cam and roller is not precisely maintained, the wrench will bind if too tight, or slip if too loose.


          For this customer, CETOL 6σ is an integral part of the quality management system. CETOL 6σ was applied to the assembly design before tooling designs were finalized. By using the results of the analysis designers identified the critical part features. Identification of critical part features, also known as Critical-to-Quality or Critical-to-Function features, allowed the design team to properly allocate the tolerance budget while considering the manufacturing capabilities of their suppliers.The benefit of this effort was obvious in the first prototype wrenches. Twenty five wrenches were built and each wrench performed as intended. A total of 5 hours was spent on this analysis. This included the time to create and validate the model, interpret results, then communicate results with recommended tolerance settings. A second prototype phase was cancelled, saving the company over  $100,000. Without CETOL 6σ, the customer stated, “It would have been impossible”.



          Would you like to see results similar to this tolerance analysis case study?

          See CETOL 6σ in action for yourself!
          Variation Analysis Case Study – Cummins Engine
          Getting it Right, before it’s Built: Using CETOL 6σ for an Integrated, Low-Risk Approach to 3D Stack-Up Analysis