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    It is inevitable to have burrs on the cutting or hole-drilling edge during the milling while milling parts. The size of burr is usually relevant to tool wear condition, feeding and rotary speed, material properties, cutting fluid, etc. The left burrs on the workpiece not only could get operatives scrapped, but also could lead the dimensions exceedi...
    The trade war between China and the US has been constantly escalated, which draws opposite sides of opinions from experts in all fields. On one side, many think tariffs limit the benefits of free trade, raising the cost of living, and failing to bring positive effects on the manufacturing in the US. On the contrary, the others believe the trade war...
    Unified National is a standard commonly used by the United States and Canada in for Inch Screw Threads where the flanks of the V have an angle of 60° to each other. At first, UN(*Ref) only included four basic categories: UNC, UNF, UNEF, UNS, and then UNJ and UNR were gradually added to the standard.     UN Thread Classes &...
        To use NO GO of the standard thread gauge for the inspection criterion for threads before plating. After plating, the threads have to pass the standard thread gauge inspections.       How to Control the Thread Size Before Plating?   As it is mentioned previously, the goal of OD control ...
    There are numerous items in our daily lives that need threads for assembly and secure. In the applications of some precision industries, the precision of thread is highly relevant to the smoothness of component assembly, so rigorous manufacturing and inspection are necessary. Regarding manufacturing threads, previously we publish an article about i...
    The definition of a thread is a spiral surrounded ridge structure with surrounding spirals in the round hole or outside of the cylinder. In terms of external threads, the peak of a thread ridge constitutes the major diameter, while the base of a thread ridge the minor. For internal threads, it is opposite. Besides, between major diameter and mi...
    Stamping is a manufacturing method which shapes sheet materials rapidly through procedures like shearing, blanking and bending. Stamping features the precise, mass, economic and effective production that it can produce fast and repetitively. We will talk about the difference between regular stamping die and fine blanking press later. Before, ...
          Generally speaking, when it comes to deciding the thickness of sheet materials, the unevenness is often a concern. It then becomes necessary for the sheet materials to have additional thickness, so that we can machine the materials to the required dimensions and at the same time ensure the accuracy of the reference...
      We probably all heard about this old saying in our lives: “To err is human, to forgive divine.” Of course we are not going to talk about making mistakes and forgiving people here. It is that the saying perfectly matches the topic we are about to discuss this time: burr and deburr. A burr refers to a small piece of material...
    Undoubtedly, part warping is a nightmare for both manufacturers and customers. It can affect the functionality of a part or lead to assembly failure. Generally, part warping is due to residual stress, which can be highly relevant to the choice of materials, dimensions of the part, and manufacturing conditions.     &nb...
    Previously on Case Study we discussed material shrinkage as an important factor to be considered in the design before production. Apart from material shrinkage, there are still far more factors you have to be aware of in your design. That being said, devil is in the details. Especially when designing an assembly part, you have to pay extra atte...
    It is always exciting to carry out new projects. However, before moving on to the production process, you have to make sure that your design already includes all the factors that might have influences on your parts.   This time, APPORO would like to share with you how material shrinkage happens, and how it can affect your parts. &nbs...
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