5results about How to "Reduce machining" patented technology

The utility model relates to the technical field of welding tools, in particular to a floor machine counterweight arm welding device which comprises a support, a panel, a positioning shaft, a positioning bolt and a quick pressing clamp. The panel is rotationally connected with the support through a connecting shaft, flange plates are arranged at the two ends of the panel, and the flange plates and the support are detachably fixed through fixing bolts. The positioning shaft is vertically fixed on the panel and is used for positioning the shaft sleeve; the positioning bolt is fixed on the surface of the panel and is matched with the through hole in the bottom of the counterweight arm; and the two groups of quick pressing pincers are respectively used for pressing the shaft sleeve and the counterweight arm. According to the welding tool, accurate assembly of the shaft sleeve and the counterweight arm is ensured through a mechanical positioning structure, manual splicing errors are effectively avoided, and the size of a welded workpiece directly meets the design requirement.

The application relates to a waveguide coplanar slow wave line, belonging to the technical field of frequency scanning antennas, and solves the problem of large space occupation caused by independent design of the slow wave line and the radiation unit of the frequency scanning antenna in the prior art. The waveguide coplanar slow wave line is integrated with a rectangular waveguide; the slow wave line has multiple omega-shaped bends. One radiation unit is arranged on the slow wave line every interval of the omega-shaped bends. The application realizes the longest length of the slow wave line under the premise of fixed spacing of the radiation units, and realizes low profile design by arranging the slow wave line and the waveguide to be coplanar.

The present disclosure provides an internal connection copper sheet of a power module and a preparation method thereof, and a power semiconductor module. The internal connection copper sheet of a power module includes a copper plate, a first copper strip, and a second copper strip, where the first copper strip and the second copper strip are spaced apart on the copper plate; the first copper strip and the second copper strip are both arc-shaped; two ends of the first copper strip are arranged on the copper plate, and two ends of the second copper strip are arranged on the copper plate. According to the present disclosure, the difficulty of secondary forming of the copper plate in the module is reduced, and the mass production capacity is implemented.

The utility model discloses a box body structure of a stirrer, which comprises a first box and a second box, the first box and the second box are welded into a whole, the first box is used for installing a motor, the second box is used for installing a transmission assembly, and the motor provides rotation power for the transmission assembly; the first box comprises a plurality of side plates, a first mounting plate and a second mounting plate, the side plates are sequentially welded to form a containing cavity, the motor is contained in the containing cavity, the first mounting plate is welded to the tops of the side plates, and the second mounting plate is welded to the bottoms of the side plates; the second box comprises a semi-surrounding plate, a first connecting plate and a second connecting plate, the semi-surrounding plate is welded to one side plate, the first connecting plate is connected with the top of the semi-surrounding plate, the second connecting plate is connected with the bottom of the semi-surrounding plate, a bearing seat is arranged between the first connecting plate and the second connecting plate, and the transmission assembly is provided with a transmission shaft matched with the bearing seat. According to the utility model, the manufacturing process can be simplified, the production cost is reduced, and the assembly efficiency is improved.

The invention relates to the field of liquid tank construction processes, in particular to a C-shaped liquid tank deep-well pump base heat-treatment-free anti-deformation construction process which comprises the steps of prefabricating a stainless steel deep-well pump base, completing pre-welding and heat treatment of a C-shaped liquid tank body and assembling and fixing the base. The low-temperature steel deep-well pump base made of the same material as the tank body is replaced by stainless steel, the base is thoroughly separated from a high-temperature heat treatment environment by utilizing the characteristic that stress relief heat treatment does not need to be carried out on the low-temperature steel tank body through stainless steel, and the problems of material microstructure change and thermal expansion and cold contraction caused by high-temperature annealing are avoided; the condition that the planeness of the flange surface of the base and the coaxiality of the spigot are reduced is fundamentally avoided; through the mode that the high-precision stainless steel base is prefabricated and the tank body is directly assembled after heat treatment, the machining procedure after deformation is omitted, and cost reduction, efficiency improvement and service life prolonging are achieved while the assembly precision and the structural stability of the tank body are guaranteed.