3results about How to "With automatic centering function" patented technology

An adjustable clamping device, namely a welding or cutting device, relates to the field of machine tool clamping device technology. It includes: a rotatable four-jaw self-centering chuck supported by a base, having four fixed seats evenly distributed around the rotational axis of the chuck, the four fixed seats being configured to synchronously move closer to or further away from the rotational axis; the adjustable clamping device further includes clamping assemblies corresponding to each fixed seat, the clamping assemblies including adjusting seats and jaws; the adjusting seats have first toothed portions, and the jaws have second toothed portions that mesh with the first toothed portions; the second toothed portions can mesh with the first toothed portions at different positions, so that the distance between the clamping portions of the two jaws in relative positions is adapted to the shape of the workpiece to be clamped, improving work efficiency. The aforementioned welding or cutting equipment includes the adjustable clamping device described above.

The application relates to a wheel-side speed reducer planetary gear shaft end face turning device, which comprises a lathe seat, the upper end of the lathe seat is provided with a rotary cover, the upper end of the lathe seat is provided with a longitudinal feed box, and the rotary cover is provided with a synchronous automatic locking mechanism. The feeding movement of the longitudinal feed box is transmitted to a wedge-shaped cover through a driving rack, an incomplete gear, a pull rod and a moving frame, and is converted into synchronous radial clamping of multiple sector clamping blocks through cooperation between the wedge-shaped cover slope and the rollers, so that the pure mechanical follow-up locking function that feeding is locking and then unloading is loosening is realized. In the transmission chain, the tooth length of the incomplete gear corresponds to the clamping stroke, and the toothless groove section corresponds to the stable cutting stroke, so that the clamping action is automatically disconnected after the transmission chain is quickly completed in the initial feeding stage, wear and heat caused by long-time meshing of the gear and the rack are avoided, and the stability of the clamping force is prevented from being reversely affected by slight feeding fluctuation.

The application discloses a kind of multistage gradient drying and anti-oxidation treatment method and system of continuous electroplated tin sheet production line, belong to metallurgical heat treatment technical field.The method is sequentially arranged along the strip steel running direction three processing stages of edge automatic tracking air knife, integral pressurized air knife and steam air knife.First, the moisture of strip steel edge is accurately removed through automatic tracking technology;Second, the free water on the whole plate is removed through integral air knife;Finally, through the injection of superheated steam mixed gas, the residual moisture is completely evaporated at high temperature and an inert protective layer is formed on the surface of the strip steel, preventing tin layer oxidation.The application solves the "black edge" defect caused by incomplete drying of the edge in the traditional drying process and the high temperature oxidation problem, with the advantages of high drying efficiency, stable product quality and high automation degree.