In the fields of precision manufacturing and mechanical engineering, tolerance is often regarded as an important component of quality control. Tolerance ensures the quality and performance of products and helps improve work efficiency and reduce manufacturing costs. Next, we will explore how to control and check the inner diameter tolerance of sintered bearings or gears.
Control
The first step in making sintered bearings or gears is to design and make molds. When making a mold, it is necessary to ensure that the mold size meets the design specifications but also the tolerance of the inner diameter is within the required range. This has certain requirements for both designers and molds. At the same time, to ensure the accuracy of the mold, high-precision CNC machining centers with proficient production experience are usually used for production, and the mold size needs to be regularly measured and corrected during the production process.
Then there is the sintering process. Sintering is a plastic deformation process that changes the size of components, so precise measurements are required before and after sintering to determine whether the inner diameter of the part meets the tolerance requirements. If it does not meet the requirements, it is necessary to adjust the sintering conditions, such as sintering temperature, time, etc. Experienced operators must also control product tolerances as much as possible during the sintering process.
Inspection
Testing the inner diameter tolerance of sintered bearings or gears usually uses measuring equipment such as calipers, plug gauges, and go/no go gauges, which are simple, direct, and accurate. Alternatively, the inner diameter of sintered components can be measured using precision measuring tools such as aperture gauges or micrometers, which can accurately measure the size and tolerance of the inner hole.
If the tolerance detection results exceed the predetermined range, it is necessary to adjust the production process to ensure the accuracy of product dimensions. There is also Statistical Process Control (SPC): using SPC to monitor and control hole tolerances. This method uses statistical data to evaluate and ensure process consistency.
In addition, achieving good inner diameter tolerance control also involves some other factors, such as selecting suitable raw materials, equipment maintenance, and employee training. All of these factors directly affect the quality and performance of the product.In summary, controlling and checking the inner diameter tolerance of sintered bearings or gears is a complex process that requires precise control and measurement in multiple stages such as design, manufacturing, and inspection. By controlling these slow links, high-quality sintered bearings and gears can be produced to meet the needs of various applications.
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