Hot-melt drill
For thin-walled panels, if you want to add threads on them, the current usual method is to press rivet nuts. However, this method will increase the number of processes and reduce efficiency.
Under this demand, the new design method hot-melt drilling technology was invented in Germany. It only takes a few seconds to tap the thin plate, and no other processes after that. It can replace the process of welding the nut and pressing the riveting nut.
Working principle
The principle of the hot-melt drill is to use a special-treated hot-melt drill bit, through the high-speed rotation of the drill bit, at the moment of contact with the surface of the metal material, a high temperature of 600 to 800 degrees can be generated to soften the metal.
At the same time, the hot-melt drill is rotated and pressed down at a high speed, so that the softened metal extends up and down along the circular hole, and a thick-walled layer that is three times thicker than the original can be formed.
The whole process only takes 2-6 seconds. The hot fuse can be used for tapping after the hot-melt drill is drilled.
Conclusion
Hot-melt drill is chip-free processing, which simplifies the process and improves the material utilization rate. After the high temperature is generated by friction and cooled in the air, the processed thread can withstand higher tension and torque, so it is a A very worthy promotion of the processing technology.
At present, this technology can also be used in the manufacture of heatsink, greatly improving the production efficiency.
