• In previous articles, we have explained the perspective of how the designed mechanical parts are manufactured. This time, we would like to change our perspective a little and introduce how the manufactured machine parts are quality guaranteed. 1. What is quality assurance of mechanical parts? Quality assurance of mechanical parts is nothing more than ensuring that the manufactured parts are made according to the drawings. Here, we will introduce how quality is guaranteed at the manufacturing site from a practical perspective. Quality assurance is “proving that wha......

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  • Parts inspection work is an important part of the mechanical maintenance process, machinery, and its parts are through the inspection to determine their technical condition and the process measures to be taken, and then, through the quality inspection to determine the technical quality after repair. 1. The main content of parts inspection In the mechanical overhaul, parts are generally inspected one by one, and their main contents can be divided into the following aspects. ▶ 1) inspection of the geometric accuracy of the parts Geometric accuracy includes dimensional accu......

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  • We all share the understanding that quality is one of the things we must never compromise in manufacturing. If quality control in the manufacturing process is compromised, our relationship with our customers will also be compromised. In order to further improve quality, we have established voluntary quality inspection standards and have achieved a no-fault policy. 1. A centralized system that allows all employees to monitor progress from order receipt to delivery We have introduced a centralized system that allows all employees to grasp the progress status at a glance. Estim......

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  • In recent years, many detectors for measuring surface roughness have become available, and are you wondering which one is the best? Be careful, because if you make a mistake in selecting a detector, you may end up with a completely unreliable value to evaluate. For example, if you want to measure a soft object but use a stylus-type detector, it may deform the surface of the workpiece. Also, some optical detectors, which are easy to use, may not be able to measure correctly depending on the shape of the workpiece. In this issue, we will introduce four types of detectors that ca......

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  • Are you measuring geometric tolerances efficiently? There are two types of measuring machines that can handle most geometric tolerances: CMMs and roundness measuring machines. Many people use CMMs to measure all geometric tolerances. Although CMMs can handle many geometric tolerances, it may not be efficient. CMMs are measuring machines that first measure and then analyze later. Therefore, if a lot of data is taken, various analyses can be performed later. On the other hand, it is easy to take data that is not necessary because it may be analyzed later. With a roundness measuri......

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  • In industrial production, due to the vibration of machine tools and cutting tools, as well as some other factors, the surface of parts can’t be completely smooth. Surface roughness measurement is a technical standard to evaluate the surface quality of parts. What is Surface Roughness Surface roughness refers to the micro geometric form error composed of small spacing and small peaks and valleys on the machined surface. The smaller the micro geometric error of the machined surface is, the higher the surface accuracy is. The surface of a part formed by cutting or other m......

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  • Screw thread is a fastening connection structure widely used in the industrial field. In military products, the majority connections are completed through threaded parts. Whether the thread is qualified directly affects the assembly performance and safety. Common Thread Measurement Methods In the measurement of thread parameters, according to the measuring equipment, the measurement methods of threads can be divided into the following categories.1) Go/no-go gauge inspectionThe traditional go/no-go gauge inspection method can only meet the minimum inspection requirements in thre......

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  • Metal castings are a type of molded articles, how to conduct effective quality inspection on castings? Here are some testing methods to ensure high quality castings. How to Inspect Castings without Damage or Destruction 1) Liquid penetrant testLiquid penetrant testing is used to check various opening defects on the surface of castings, such as surface cracks, surface pinholes, and other defects that are difficult to find with the naked eye. The commonly used penetrant inspection is color inspection. This method is to correct or spray-colored (usually red) liquid (penetrant) wit......

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