3results about How to "Uniform outer diameter" patented technology

The present invention discloses a production method of a seamless titanium thermos cup welded pipe, comprising step a forming and welding; step b scraping and finishing; step c sawing or cold drawing; step d cleaning and annealing, step a forming and welding: the forming roller extrude the titanium strip into shape, the high-frequency induction current rapidly heats the edge of the strip, and the extrusion roller extrude and welds the edge, step b scraping and finishing: the inner and outer scraping knives continuously scrape the weld slag extruded at the weld seam, and the finishing roller extrude and correct the roundness and straightness of the welded pipe, thereby obtaining a high-frequency induction welded titanium pipe, and step c sawing or cold drawing: the high-speed sawing machine follows the fixed length to cut the high-frequency induction welded titanium pipe. The seamless titanium thermos cup welded pipe produced by the present invention is a titanium welded pipe made of high-frequency induction welding, has high dimensional accuracy, good mechanical properties, and a production efficiency 10 times higher than that of seamless pipe making and argon arc welding pipe, realizing a rapid preparation process route of seamless titanium thermos cup pipes directly from raw material strips, greatly reducing production costs.

The constant-impedance tolerance inter-board radio frequency connector and the multi-port inter-board connector comprise a first connecting assembly and a second connecting assembly which are matched with each other, and the second connecting assembly comprises a fixing unit connected with a PCB and a switching unit matched with the first connecting assembly. The adapter inner conductor of the adapter unit has a uniform outer diameter and extends out of the adapter outer conductor, and the first outer conductor of the first connecting assembly has a uniform inner diameter, so that the connector keeps the characteristic impedance constant in the sliding matching process of the adapter unit and the first connecting assembly; the multi-port high-tolerance high-density layout radio frequency connector has the advantages that the multi-port high-tolerance high-density layout radio frequency connector is simple in structure and low in cost, reflection during signal transmission is reduced, excellent return loss performance under high frequency can be guaranteed, a multi-port high-tolerance high-density layout radio frequency connection scheme can be realized, and the application frequency can reach 8Ghz and can be expanded to 16GHz at most.

This utility model relates to the field of cable stranding technology and provides a fire-resistant cable stranding machine, including a pressure plate. An output block is fixedly connected to the top of the pressure plate. A rotating rod is rotatably connected inside the output block. Two connecting plates are fixedly connected to the outer surface of the rotating rod. A rod sleeve is fixedly connected to the end of each connecting plate away from the rotating rod. A rotating rod is rotatably connected to the inner surface of the rod sleeve. A moving gear is fixedly connected to the end of the rotating rod near the output block. Fixed gear rings are meshed on the outer surfaces of the two moving gears. This utility model features a self-rotating and revolution-rotating stranding structure, ensuring uniform rotation of the single wire during stranding. This avoids single wire deviation or knotting due to uneven tension, controls the consistency of the stranding pitch, ensures a tight structure and uniform outer diameter of each layer of the cable, forms a stable spiral stranding structure, improves the cable's tensile and bending resistance, and prevents single wire breakage or insulation damage due to excessive twisting.