why are tolerances important in manufacturing?
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Tolerance is the acceptable range for a physical dimension, which is determined by the product designer based on form, fit and function of a part. ... Tolerances are pivotal in the manufacturing process because they will determine how well a part will fit in the final piece and how reliable the final product will be.
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Continuous process improvement is a universal need. Six Sigma focuses on reducing variance and errors in a production process. That's because processes without consistent dependability eventually lead to errors and defective products. Reducing variance leads to higher quality products and services.
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Quality standards are defined as documents that provide requirements, specifications, guidelines, or characteristics that can be used consistently to ensure that materials, products, processes, and services are fit for their purpose.
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Importance of Quality Control and Quality Assurance. ... Quality control is essential to building a successful business that delivers products that meet or exceed customers' expectations. It also forms the basis of an efficient business that minimizes waste and operates at high levels of productivity.
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Customer needs means to meet the customer reasonable specific requirements. Conformance to specifications means to meet any requirements defined for the product, not only regulatory. The catch here is that customer requirements, directly defined or expected by the costumer, are part of the overall product requirements.
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['Identifying Inputs. ... ', 'Scheduling Production. ... ', 'Minimizing Production Costs. ... ', 'Ensuring Product Quality. ... ', 'Improve Existing Products.']
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['Flexibility. It is more flexible when compared to a product layout. ... ', 'Lower investment. General purpose machines which are usually of low cost are used. ... ', 'No stoppage of production. ... ', 'Scope for expansion. ... ', 'Full utilization of equipment. ... ', 'Better supervision.']
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Good manufacturing practice (GMP) is a system for ensuring that products are consistently produced and controlled according to quality standards. It is designed to minimize the risks involved in any pharmaceutical production that cannot be eliminated through testing the final product.
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['Enable Cellular Manufacturing.', 'Reduce Engineering Cost.', 'Accelerate Product Development.', 'Improve Costing Accuracy.', 'Simplify Process Planning.', 'Reduce Tooling Cost.', 'Simplify Purchasing.', 'Help With Value Stream Mapping.']
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Precision and accuracy are independent of each other. One measurement is enough for accuracy, while precision requires many measurements.
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1. When the length being measured is expressed as the distance between two lines, this is known as line standard. ... Line standards are not as accurate as end standards and cannot be used for close tolerance measurement.
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It was designed to use common materials available in the auto industry to deliver an inexpensive, all American made, reliable, robust, pistol to the marketplace. Without exception, when used like a high end gun, with good ammunition, they are extremely reliable and accurate for what they are designed for.
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Machining is still possible without any great difficulty. A disadvantage of hardening and tempering lies in the fact that it is not always possible to attain optimum uniform microstructures because relatively large batches are treated in furnace systems and quenching baths at the same time.
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The tolerance interval differs from a confidence interval in that the confidence interval bounds a single-valued population parameter (the mean or the variance, for example) with some confidence, while the tolerance interval bounds the range of data values that includes a specific proportion of the population.
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Steel rules come in rigid and flexible versions. While their primary purpose is accurate measurement, they can also be used as guides for laying out lines, and if rigid enough, for cutting. The thinner, more flexible rules can also be used to measure rounded or cambered work.
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['preventing over-production.', 'minimising waiting times and transport costs.', 'saving resources by streamlining your production systems.', 'reducing the capital you have tied up in stock.', 'dispensing with the need for inventory operations.', 'decreasing product defects.']
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RelTol — This tolerance is a measure of the error relative to the size of each solution component. Roughly, it controls the number of correct digits in all solution components, except those smaller than thresholds AbsTol(i). The default, 1e-3, corresponds to 0.1% accuracy.