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  • Representation of thread

    Representation of thread

      Description Summary The internal thread is generally open to indicate, In the non-circular view, the thread base (large diameter) is represented by a thin solid line (not drawn into the chamfer area);The tip of the thread (small path) and the thread ter...
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  • Thread drawing and marking

    Thread drawing and marking

    Chapter VII. Special representations in mechanical drawings 07.1 Thread 7.2 Thing method of the thread is stipulated 7.3 Method for marking thread At present, various design fields are CAD download on the Internet, looking for a humanized, intelligent professional software, a variety of plug-in...
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  • Surface roughness of thread

    Surface roughness of thread

    The surface roughness requirements of the thread are 3.2 for qualified products and 1.6 for first-class and excellent products. Mark on the thread such as M8X1-6h accuracy, to achieve a relatively high surface roughness, connection and fastening with the thread, the requirements are relatively l...
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  • A comprehensive overview of fastener knowledge

    A comprehensive overview of fastener knowledge

    Cold heading of fastener production process Basic concepts of cold heading definition: at room temperature, the use of a press, the blank between the upper and lower die pressure, so that the blank in the axial compression, radial expansion of the metal pressure processing. (Follow the ...
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  • How to detect threads

    How to detect threads

    Measurement steps: 1. Clean the measuring tool and measured parts to ensure that there is no iron filings on the surface of the measuring tool and measured parts. 2, then according to the nominal diameter of the measured thread, select M24×1 thread ring gauge. 3, when measuring, ...
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  • Fastener basics

    Fastener basics

    It can not be said that ordinary thread and reamed hole thread, but ordinary bolt and reamed hole bolt, because the thread part of the two is the same, the difference is that the part of the rod without thread. Because the thread part is the same, the axial force is the same. There is...
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  • Thread tolerance and inspection

    Thread tolerance and inspection

    Tolerance and detection of threadbonding The purpose of this chapter is to understand the characteristics of common thread interchangeability and the application of tolerance standards. The learning requirement is to understand the influence of the main geometric errors of common thread on the i...
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  • Fastener torque and common problems

    Fastener torque and common problems

    Division of responsibilities for fastener torque 1. PATAC is responsible for releasing dynamic torque and initial static torque. PATAC releases dynamic torque standard according to design requirements, combined with experimental results and road test results. 2. ME is responsible for releasi...
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  • Thread tolerance and inspection

    Thread tolerance and inspection

    Tolerance and detection of thread bonding The purpose of this chapter is to understand the characteristics of common thread interchangeability and the application of tolerance standards. The learning requirement is to understand the influence of the main geometric errors of common thread on the ...
    Read More