Overview
| brand | Cantonese snail | Nominal diameter | thirty-three |
| length | seventy-five | Interdental distance | three point five |
| Applicable scope | Wind power fasteners | producing area | Zengcheng |
| colour | Bright Silver | Functional purpose | Keychain |
| Packaging specifications | twenty | model | M33 * 75 |
| Customized or not | no | Order number | Yue Luo-2021718 |
| Standard type | German standard | Delivery time | Within 24 hours |
| Performance level | three point six | Material grade | Carbon steel grade 12.9 |
Product Details
However, Yueluo still feels that there should be room for improvement in the "screw improvement" and "screws that integrate locking stability, labor saving, speed, and versatility" of the two cases mentioned above; For example, the new case of "Screw Improvement" No. 556784, although its rod has the structural function of cutting and collecting chips, is still difficult to operate due to the obstruction of the hardness of the object organization when the screw starts to rotate into objects such as wood. Therefore, the staff still need to exert considerable force during the locking operation, resulting in the lack of difficulty in screw operation; For example, the new case No. 289408, which integrates locking stability, labor-saving speed, and multifunctional features, although its rod has the structural function of cutting and chip removal, it rotates into the middle to rear section of the object at the rod. Due to the inability to discharge debris, the rod is pushed outward to the surrounding tissue of the object, causing the object to expand outward and even severely damaging the appearance of the object.
At present, using automated tools to tighten screws has become very common. However, when the material used for fastening the object is relatively soft, screw tightening is often prone to tilting, failure to stick, and the problem of damaging the screw opening during the tightening process. At the same time, metal chips can also be generated during the tightening process, which can cause short circuits on the circuit board.
At present, most thread locking structures use integral nuts and external thread screwing structures. To remove the nuts from the screw during use, they must be completely unscrewed along the screw, which is time-consuming and labor-intensive, making it even more inconvenient for situations that require quick disassembly and assembly.
One step in thread manufacturing is to set a negative groove on the thread head of the thread, so that a screwdriver can be used for operation when tightening or loosening the thread. Generally speaking, when companies manually rank and use tools to drill screws at the front end on the track, the work efficiency is not good, and the screws are not fixed. Therefore, when cutting, the tool flies out and the blade breaks, which has a certain safety issue. After cutting, the screw head is very rough and has burrs
The core pulling rivet is achieved by pulling the core head. With the help of a force from the inside out, the stretching screw is pulled out upwards under the action of a unidirectional tensile force, causing the outer sleeve material to expand and deform, producing a sexual tightening force. After the riveting is completed, the middle stretching screw fractures and detaches. Due to the need for large tensile force to cause the rivet to expand and deform, the longer stretching screw accounts for about 60-82% of the total length of the rivet. After the workpiece is riveted, it detaches and becomes waste, resulting in significant material waste and higher rivet costs. At the same time, due to the limitation of deformation mode, it is difficult for pop rivets to be made into hexagonal structures like Rivet nut, so the torsion resistance of their connection is low.
