Mobile phone motors require laser welding machines to complete vibration

Mobile phones have become a necessity in modern life. Calls, videos, mobile offices and small windows fill our living space. We have always known that mobile phones have a vibration function, but do you know how mobile phones vibrate? In fact, it is because there is a small motor in the mobile phone.

The working principle of the motor is to drive the starter rotor to rotate through electromagnetic induction, and the small gear on the rotor drives the engine flywheel to rotate. The micro vibration motor mainly used in mobile phones is a DC brushed motor with an eccentric wheel on the motor shaft. When the motor rotates, the center point of the eccentric wheel is not on the center of the motor, causing the motor to lose balance continuously and inertia causes vibration.

With the development of technology, LRA linear motor has appeared in people's sight. This motor is completely different from ERM motor in structure. As its name suggests, it realizes linear motion vibration. The so-called linear motor is to expand the motor after cutting along the axis direction, so that the rotational motion of the motor becomes linear motion, so it is called a linear motor. The linear vibration motor is the interruption and strengthening sound attention of the device notification system, which brings a rich sensory experience to users. Impressively, the linear motor can bring a delicate experience through clicks or heartbeats by providing scene vibration feedback.

So how does such a powerful motor connect to other parts in a mobile phone? Mobile phone manufacturers tell us that they can be welded together and work by laser welding.

Laser welding is a new type of welding method that can produce welds that exceed the strength of the raw materials. Metal motor laser welding machines have basically no consumables, significantly reduce downtime and auxiliary time, and have high production efficiency; and because the focused spot is small, the weld can be positioned with high precision, and the beam is easy to transmit and control, so it can weld long-distance or some inaccessible parts and micro components.

Laiser laser welding machine mainly welds thin-walled materials and precision parts, and can realize spot welding, butt welding, lap welding, seal welding, etc. Two metal workpieces can be directly welded without flux or filler, and the welded parts can be the same metal or different metals; the weld is beautiful and smooth, and cold processing will not cause deformation around the product.