3results about How to "Reduce forming force" patented technology

The utility model discloses a new energy vehicle charging connector body precision forging forming die which comprises a connecting handle part, a head part extending for a set distance along an arc path, a prefabricated stepped hole formed in the back arch position of a connecting area of the connecting handle part and the head part in an inwards-concave mode and perpendicular to the end face of the head part, and a lower die and an upper die which can be opened and closed. The lower die and the upper die form a cavity with a charging connector body in a supine posture, the surface of the cavity used for forming the end face part of the head is horizontally arranged, located on the upper die and located at a high position, and a containing cavity used for containing an extrusion head and a sliding cavity used for guiding the extrusion head in a sliding mode are further formed in the lower die. The extrusion head is used for stretching into the cavity to form a prefabricated stepped hole and a head after the lower die and the upper die are closed.

The application provides a battery cell, a battery device and a power utilization device. The battery cell comprises a shell and a pressure relief mechanism, the shell has a wall portion, and the pressure relief mechanism is arranged on the wall portion. The pressure relief mechanism is provided with a weak portion configured to be at least partially destroyed when the pressure or temperature in the battery cell reaches a threshold value. The pressure relief mechanism is provided with a plurality of grooves, the plurality of grooves comprises a first groove and a second groove, the weak portion is arranged outside the first groove, and the second groove is arranged outside the weak portion. When a part of the pressure relief mechanism located in the area surrounded by the first groove is subjected to an external force, the position of the pressure relief mechanism provided with the first groove is prone to deformation and absorption of the external force; when a part of the pressure relief mechanism located outside the area surrounded by the second groove is subjected to an external force, the position of the pressure relief mechanism provided with the second groove is prone to deformation and absorption of the external force, thereby reducing the stress transmitted to the weak portion, reducing the risk of premature cracking of the weak portion, and being beneficial to improving the service life of the battery cell.

The invention relates to the technical field of rolling forming, and discloses a rolling double-point incremental forming device and method.The rolling double-point incremental forming device comprises a rolling rod, a plate is fixedly arranged on the inner wall of a blank holder, when the rolling rod moves, a fixed shaft is driven to move, a roller synchronously moves along with the fixed shaft, and in the moving process of the rolling rod, pressure is applied to the roller, so that the rolling rod is driven to rotate; according to the incremental forming method, the rolling wheel rolls on the surface of the plate, pressure is applied to the plate, the surface of the plate is gradually recessed by means of continuous rolling of the rolling wheel, the quality of the surface left when the tool head makes contact with the plate is improved, forming force and forming defects in the forming process are reduced, and the application range of incremental forming is further expanded.