3results about How to "Improve dynamic balance accuracy" patented technology

The invention relates to the technical field of inertia rings, and discloses a high-precision inertia ring and a circumferential mass compensation forming process thereof.The high-precision inertia ring comprises a plurality of arc-shaped cylinders, the multiple arc-shaped cylinders are sequentially connected end to end to form the inertia ring of a closed annular structure, every two adjacent arc-shaped cylinders are fixedly connected through a welding seam at the splicing position, and a containing groove is formed in the splicing position; the containing groove is filled with a balance weight piece, and the balance weight piece is used for correcting the uniformity of mass distribution in the circumferential direction of the inertia ring. According to the high-precision inertia ring and the circumferential mass compensation forming process thereof, the accommodating groove at the splicing part is filled with the counterweight piece capable of compensating the mass deviation, so that the circumferential mass of the inertia ring is accurately adjusted; the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuation, uneven solder filling and operation difference of an existing inertia ring formed through stamping and welding is solved from the structural level, and the dynamic balance precision and the operation stability of the inertia ring during high-speed rotation are remarkably improved.

This application discloses an automotive wheel hub mold with upper and lower split side molds, including an upper mold, a lower mold, and several side molds. The side molds include a front wheel rim side mold and a rear wheel rim side mold that fit together vertically. The front wheel rim side mold is equipped with a cooling device. This cooling device guides the cooling medium to uniformly and rapidly cool the thickness portion where the front wheel rim connects to the spokes. It includes a cooling chamber, a reflector plate, a water inlet pipe, and a return pipe. The reflector plate is located at the top of the cooling chamber. One end of the water inlet pipe extends into the cooling chamber and slopes upwards towards the reflector plate. The core solution employs a cooling device with a reflector plate. Through optimized pipe structure and program control, uniform dispersion and cooling of the cooling medium are achieved, improving the casting efficiency and solidification quality of this type of wheel, while reducing localized thermal shock to the mold and reducing the risk of surface cracking.

The utility model discloses a motor rotor with high stability, which comprises a shaft and a rotor body arranged on the outer side of the shaft, and micro-channels are symmetrically arranged in the shaft. A cavity of a U-shaped structure is formed in the middle of the shaft, a piston block slides in the cavity, inlet and outlet pipes extending to the outer side of the shaft are fixedly arranged at the two ends of the cavity, sealing pieces are arranged at openings of the inlet and outlet pipes, and the cavity is filled with fluid media. By means of the structure, a balance system is formed by the U-shaped cavity and the piston block, the mass distribution of the rotor can be adjusted, the mass deviation can be compensated to restrain vibration, and the dynamic balance precision is improved; the spiral micro-channel is matched with the graphene heat-conducting film and the rotor fan blade, so that a good heat dissipation structure can be formed, the rotor is cooled, local overheating deformation is avoided, efficient heat dissipation is achieved, and the performance of the rotor is improved.