Service HotlineLarge, countersunk, and thin ManchesterManchesterrivet nuts can be produced according to different die angles. Then the cold forged ManchesterManchesterrivet nut is degreasing, cleaned and annealed, and then extruded and tapped and surface electroplated. Since the ManchesterManchesterrivet nut is formed by cold extrusion of low carbon steel, it has high mechanical properties. Specifically, the tensile strength of M3 is 250Kg, the shear strength is 140Kg; the tensile strength of M4 is 700Kg, the shear strength is 220Kg; the tensile strength of M5 1100Kg, shear force 380Kg; M6 tensile force 1750Kg, shear force 450Kg; M8 tensile force 2650Kg, shear force 660Kg.
In order to achieve this technical purpose, the plan of Guangdong Yueluo Hardware Industry Co., Ltd. is: a new type of open rivet, including a rivet body and a mandrel, the rivet body and one end of the mandrel are fixedly connected, and the lower end of the rivet body is provided with There is a round table, the top of the mandrel is provided with a nail head pit, the mandrel is provided with a stop groove, the lower side of the stop groove is provided with a mandrel breakpoint, and the mandrel is set on the mandrel. There is a stop ring, the stop ring is located on the lower side of the round table, and the lower side of the stop ring is provided with an assembly warp.
Classification broadcast product series Product detailed classification Hexagon bolts (1) Hexagon bolts (1) Hexagon full teeth: GB5783/DIN933 (2) Hexagon half teeth; GB5782/DIN931 (3) Class B flange hexagon bolts: GB5787 (4) ManchesterJoint bolts: GB798/DIN444 (5) Welding bolts for manual welding: GB902 square neck bolts (1) ManchesterHalf round head square neck bolts: GB14/DIN603 (2) Small half round head square neck bolts: GB12 (3) Half round head low square neck bolts: GB801 Remarks: ManchesterSquare neck bolts and Manchestercarriage bolts ManchesterManchesterHexagon socket head Manchestercap screws (1) ManchesterManchesterHexagon socket head Manchestercap screws: GB70/ManchesterDIN912 (2) Hexagon socket flat Manchesterend ManchesterManchesterManchesterManchesterset screws: BG70/ManchesterDIN913 (3) Hexagon socket head ManchesterManchesterManchesterManchesterset screws: ManchesterGB78/ManchesterDIN914 ( 4) Countersunk head socket head socket head ManchesterManchesterManchesterManchesterset screw: GB79/ManchesterDIN915 (5) Hexagon socket socket head ManchesterManchesterManchesterManchesterset screw: GB80/ManchesterDIN916 (6) Hexagon socket head countersunk head screw: ManchesterManchesterDIN7991 (7) Hexagon socket head thin head screw: DIN7984 ( 8) Plug screw: ISO7379 Manchestermachine screw (1) Slotted cylinder head screw: GB65/DIN84 (2) Slotted pan head screw: GB67/DIN85 (3) Slotted countersunk head screw: GB68/DIN963 (4) Slotted ManchesterManchesterManchesterManchesterLarge Manchesterflat head screw (5) Cross recessed small pan head screw: GB823 (6) Cross recessed large Manchesterflat head screw (7) ManchesterCross recessed pan head screw: ManchesterGB818/DIN7985 (8) Cross recessed countersunk head screw: ManchesterGB819/DIN965 (9 ) Cross recessed countersunk head screw: ManchesterGB820/DIN966 thread and stud (2) ManchesterStud bolt-bm=1d: GB897/DIN938 (3) ManchesterStud bolt-bm=1.25d: GB898/DIN939 (4) ManchesterStud head Bolt-bm=1.5d: GB899 (5) ManchesterStud bolt-bm=2d: GB900 (1) Tooth bar: GB15389/DIN976 (6) Equal length stud: GB901/DIN976
The motor bearing retaining ring is used to fix the axial position of the bearing. The structure of the bearing retaining ring 1 in the prior art is shown in FIG. 1 , which is a ring-shaped sheet-like structure with a gap, the inner diameter of which is smaller than the inner diameter of the connected bearing, and the outer side 11 of the ring is a continuous arc shape. The inner side of the ring is provided with a groove 12, 13 of the same size on both sides of the midpoint of the ring, and the width of the groove is equal to the distance from the groove to the gap of the ring. When the axial locking force (impact) of the bearing retaining ring of this structure is greater than 6.5N, serious deformation will occur or even the retaining ring will be separated from the shaft shoulder. In order to solve this problem, when the axial locking force is greater than 6.5N, the prior art generally adopts a two-ring combined structure of steel wire ring + bearing retaining ring, and its installation state is shown in Figure 2, as shown in Figure 2, l It is a bearing retaining ring in the prior art, 3 is a locking nut, 4 is a fan blade insert, 5 is a bearing, 6 is a shaft, and 7 is a wire ring. However, such a structure is costly and troublesome to assemble, especially if the bearing retaining ring is not placed in place during assembly, the bearing retaining ring is at risk of being crushed.
4. Manufacturing and assembly Due to the limitations of manufacturing technology and accuracy, there are sharp corners on the edge of the thread or the dimensional coordination between parts is not coordinated. During the initial assembly, the screw-in and screw-out torque may fluctuate or fluctuate to a certain extent. After a certain number of running-in, more accurate reusability characteristics of the lock nut can be obtained.
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