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        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...
    As mentioned previously in "Cross Knurling Profile DIN 82-RGV", knurling is a manufacturing process to feature straight, crossed, angled, diamond-like lines or pattern onto the CNC components. Usually, we use DIN 82 knurling specification standard for most CNC machining cases. If diamond knurling is required, we shall use DIN 82-RGE which is ...
    With recent increase in demand for more ultra precision machining designs for improving performance requirements, we are facing a great challenge in this kind of CNC machining services. Generally speaking, the greatest challenge when we machine these components is part distortion. For instance, assemblies with multiple enormous parts, of which remo...
    Parts after machining, cold rolling and welding usually generate internal residual stresses which may result in serious and unacceptable shrinking or distortion. Whatever the parts are made of metal or plastic. Recently, we are running a CNC machining project of rotor shaft for our Singapore client. At current, this project is still in First Articl...
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