34results about How to "Focus well" patented technology

The invention discloses graphene serving as a cathode of an X-ray tube and an efficient graphene cathode field X-ray tube. The efficient graphene cathode field X-ray tube comprises a cathode assembly, an anode assembly and a vacuum glass tube, wherein the cathode assembly comprises a graphene cathode. The efficient graphene cathode field X-ray tube has the characteristics of high conversion efficiency, less scattered rays, reduced radiation dosage born by a human body in the fields of medical and security check and the like, easy implementation of micro-focus X-ray tube, strong transmitting capacity and high voltage resistance, and can be applied to the fields of semi-conductor detection, industrial flaw detection and the like. The efficient graphene cathode field X-ray tube is good in controllability, free from a heating cathode and instantaneous to transmit, and the number of electronic emissions is controlled by adjusting the grid voltage, so that the tube current is controlled. The efficient graphene cathode field X-ray tube further has the characteristics of good stability and long service life.

The invention discloses a laser path of a laser welding point, and a laser welding method. The laser welding method comprises the steps of fixing a product to be welded onto a two-dimensional platformthrough a fixture, utilizing a pulse laser for scanning welding a welding point in a welding area of the product to be welded, and dividing a laser scanned path graph of the welding point into threesegments, wherein the first segment is a straight-line segment or a curved segment, the second segment is formed by multiple reciprocating disjoint straight-line segments or curved segments, startingpoints of each two adjacent straight-line segments or curved segments are connected through a transition segment, the third segment is a straight-line segment or a curved segment, and the first segment, the second segment and the third segment are sequentially connected; and crossing the straight-line segments or the curved segments of the first segment and the second segment, crossing the straight-line segments or the curved segments of the third segment and the second segment, and during a laser scanning welding process, blowing a protection gas to the welding point. According to a speciallyedited point-shaped welding graph, a thin slice is welded through a single-pulse superposition track manner, multiple small molten pools are formed in the thin slice material, and the welding point with a large tensile force is obtained.

A technological method for straightening a shaft by a laser cladding technology includes 1), detecting a bent portion and a bent direction of a shaft part; 2), machining a cladding groove at a high point of the bent position of the shaft or a machinable high point of the shaft; (3), straightening the cladding groove by means of laser cladding; 4), removing residual stress on the surface which is subjected to laser cladding after the shaft part is thoroughly cooled; 5), detecting a jumping value of the shaft again to determine whether the shaft needs to be subjected to laser cladding again or not; and 6), machining and polishing the surface which is subjected to laser cladding to guarantee the precision of the shaft after the shaft is repaired. The technological method has the advantages that contact machining is omitted, abrasion of tools is prevented, laser beams can be guided and focused easily and are high in energy density, the machining speed is high, a heat affected zone is small, follow-up machining workload is low, the method can be used with a numerical control system easily to realize automation, and particularly, the shortcoming that deformation of a shaft cannot be precisely controlled by means of changing technological parameters to straighten the shaft by laser in the prior art is overcome.

A vehicle seat comprising a seat part extending in the vehicle longitudinal direction (X) and in the vehicle transverse direction (Y) and including a backrest part is provided. The vehicle seat includes a seat substructure for suspending and / or damping at least the seat part with respect to the body of a vehicle. The seat substructure comprises at least one horizontal suspension device that includes a body-side lower part and a seat-part-side upper part displaceable with respect thereto. A coupling device is arranged interactively between the seat-part-side upper part and the body-side lower part, and includes a deformable suspension element as a first coupling element and a bearing and deformation device as a further coupling element.