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Parts Quality Parallelism Testing
One of the three characteristics that differentiates ourselves from the competitor is parallelism. Parallelism is defined as the quality or condition of being parallel; a parallel relationship. For the Northern Industrial Manufacturing product, this is absolutely critical. Whether it is thrust washer, shim, or spacers that our customers are installing into their application, if parallelism is off, so too is our customers assemblies.
In GD&T, parallelism is a geometric condition where opposing surfaces of a part are completely parallel with each other. Parallelism can also be a measurement of how parallel a top surface is relative to the datum, which is the bottom surface. Parallelism applies to many objects such as parts, work pieces, tools, and instruments.
At Northern Industrial Manufacturing our attention to detail has won us awards like the GM Global Supplier Excellence Award, and ZF Supplier of the year.
Northern Industrial Manufacturing’s extensive array of part testing capabilities will bring your components to market on time and within budget at the highest level of quality possible. With a goal of being the automotive industry’s “go to” source for high quality parts manufacturing, we would love to provide you a competitive quote.
Parts Quality Parallelism Testing
Like any other GD&T geometric conditions, measuring and evaluating the parallelism of parts is important, especially for high quality precision metal shims. When shims are placed between parts, the need to be parallel so they can easily slide in the slim gap. Parallelism is also important for shims that are stacked together in a shaft to fill a gap between parts, they all need to be parallel so there won’t be any gaps between them, which will affect their performance.
In summary, parallelism in parts matters because of how it affects the parts’ performance interacting with other parts while being in between them.
The parallelism of a part determines how well the part will perform depending on its purpose and intended motion. If the purpose of the part involves full contact in between two flat surfaces and the part is really flat, the part will be able to make full contact with the surface. If the part is meant to slide between two surfaces and it is really parallel, the part will perform well on its sliding motion.
The units of measurement for parallelism is usually in inches (English) and millimeters (S.I.). The parallelism of a part is usually measured with a height gauge that can be run across the top surface. Like the process of measuring flatness, the surfaces of interest needs to be parallel with the gauge. Unlike the process of measuring flatness, the parallelism of a part needs to be measured on a flat surface, such as a granite block.
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