In the 1950s, Lou Huck, the founder of pop rivets, used Hooke's law to create and invent a generation of standard parts for pop rivets. The core pulling rivet, also known as Huck blind rivet or Huck anchor bolt, is based on the basic principle of Hooke's law. After the two fusion parts are clamped with the special equipment of the core pulling rivet, the metal material of the annular ring sleeve (or the screw cap without external thread) is extruded and molded and filled into the concave groove of the bolt column containing several annular pipe grooves, so that the ring sleeve and the bolt column can be made A tightening method of tight integration. Therefore, each standard part of the core pulling rivet has the same tightening force after assembly and the aluminum double drum rivet is not loose. The standard parts of core pulling rivets can be used for the components that need to be bolted or riveted. Because of the characteristics of high tightening force, no loosening and shear stress of regulator caused by standard parts of blind rivets, standard parts of blind rivets are often used to replace welding. According to the type of materials, blind rivets can be divided into open type core pulling aluminum bolts, closed aluminum pulling nails, stainless steel pulling nails and painting pulling nails. The standard parts of core pulling rivets and traditional anchor bolts use torque rotation to cause different tightening force. The standard parts of color rivets use the basic principle of Hooke's law and through the professional equipment of core pulling rivets, under the action of unilateral tension, pull the bolt rod and select the edge ring sleeve, extrude the smooth inner ring sleeve into the concave groove of the extruder screw, so that the ring sleeve and anchor bolt can produce 100%

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