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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...Read More -
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...Read More -
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 -
Thread standard
Standard series of diameter and pitch (GB/T193-2003) The diameter and pitch standard combination series shall comply with the provisio of Table 1. In the table, the pitch should be selected in the same row as the diamete Column diameter.Choose the first series of diameters first, the second s...Read More -
Classification and marking of common threads
Marking and marking of thread 8In order to express the many elements of the thread clearly, so as to facilitate processing, the necessary annotation must be made in the pattern of the thread configuration, and the core of the annotation is the complete marking of the thread, for different tired...Read More -
Thread and threaded fittings
Example 1 Is a thread with a tooth type of equilateral triangle, a nominal diameter of 36, and a pitch of 2 considered as a standard thread?Solution: According to the table of the given conditions, the thread whose profile is equilateral triangle and pitch is 2 is an ordinary thread...Read More -
Pre-tightening and anti-loosening of threaded connections
1. Pre-tightening of thread connectionBefore the action of the working load, the screw is subjected to the action of the pre-tightening force. 1. The purpose of pre-tightening 1) Increase the stiffness of the connection 2) Increase tightness 3) Improve the ability to keep loose ...Read More -
Fastener selection guide
Fastener function introduction Fasteners are divided into threaded fasteners and non-threaded fasteners, non-threaded fasteners mainly refer to rivets, welded pins, connecting pins, etc., the engine in addition to the use of non-threaded fasteners, the vast majority are threaded fasteners. The s...Read More -
Threaded connection design
4. Pre-tightening and anti-loosening of thread connection 1. Pre-tightening of thread connectionThread connection: loose connection — do not tighten when assembling, only when the external load is applied to the force — tighten when assembling, that is, when carrying, it...Read More
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