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McCuistion, Ph.D., GDTPS, created all the figures for the Y14.43 standard. Proper placement of surface characteristics on a surface texture symbol.Surface Texture Symbols and Characteristics.ASME Y14.5-2009 Dimensioning and Tolerancing standard.ASME Y14.4 Pictorial Drawings standard/ ASME Y14.41 Digital Product Definition Data Practices standard.If you would like to speak with one of our Engineering staff about your custom silicone keypad or component, please call us at: 75 or use our contact form to request a quote today. We manufacture all silicone components in-house. For example if quality must measure obscure dimensions that do not pertain the actual function of your assembly or component, then that just adds time and cost to your component.Īt SiTECH, we are locally owned and operated. Over controlling a component can significantly increase supplier cost and be detrimental to receiving your parts in a timely fashion. The last few rules not only add to helping cleaning up a drawing, but they also help manufacturers such as Si-Tech and suppliers down the line. Having a concise drawing that conveys everything needed allows for companies to quickly understand everything needed for your product, or what your product offers. These rules serve as guidelines to help engineers and designers to convey what they are trying to show in a concise and readable way.įollowing these rules as much as possible is a great way to avoid unnecessary confusion when dealing with potential customers, or suppliers. The first few rules deal with how a drawing should look. These rules are a great start to understanding how a drawing of a component should be mapped out. Dimensions and tolerances should only apply at the drawing level where they are specified.Dimension tolerances should be located within the title block or shown as a note on the drawing.The use of reference dimensions should be minimized.Every dimension shown (other than reference, minimum, maximum, or stock) should have a tolerance.The complete drawing should define the part without specifying the manufacturing process.Dimensions should be arranged for optimal readability if at all possible.No more dimensions than those necessary for complete definition should be given.Each necessary dimension of an end product should be shown.
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Dimensioning and tolerancing shall clearly define engineering intent.These rules are a general guideline for understanding the purpose of good dimensioning practices. Below are a few summarized rules from the American Society of Mechanical Engineers standard: ASME Y14.5-2009. These features may be the ones that perform a function or interact with other components within your final assembly. Using these rules allow you to focus your dimensions and tolerances to the key features of your design. While designing a new silicone rubber component or keypad it helps to use the fundamental rules of dimensioning and tolerancing.