Ribs Tube Design

Conduct Research

• Pumping iron
  the years. But the type most widely used today is called a McKibben muscle, named for a researcher who introduced the design as an orthotic actuator in the late 1950s. It consists of a gas-tight elastic tube or bladder surrounded by braided sleeving. Braid fibers run helically around the long axis...
• Grille guard garners top automotive accolade
  A radical technique that insert-molds a 1.5-in.-diameter chrome tube inside glass-filled polypropylene (PP) gave a brush grille guard for GM SUVs and trucks the top automotive prize in an annual plastic parts competition. The contest took place during the Innovations Conference sponsored by Winona...
• Medical Device Link . High-Speed Injection Molding of Thin-Wall Polycarbonate Tubes
  . Such designs can tax the flow characteristics of the polycarbonates typically specified. When we decided to develop a 100-mm-long tube with ribs and 0.68-mm-thick walls, mold-flow analysis predicted a cycle with injection pressure of 23,000 psi and melt temperatures of 323 C. Previous work indicated...
• How to Deal with "Rapid" Service Bureaus
  , and see where the wrench breaks. The designer then knows where to put more material or ribs. In that case, the RP part can be considered functional because it provides a lot of design information. “Last but not least, when it comes to selecting a quality service bureau, find out how long the place...
• BMW Uses Stratasys FDM to Reduce Part Weight by 72%
  example, BMW reduced the weight of a device by 72 percent with a sparse-fill build technique. Replacing the solid core with internal ribs cut 1.3 kg (2.9 lbs) from the device. "This may not seem like much, but when a worker uses the tool hundreds of times in a shift, it makes a big difference," says...
• Back To The Future: Is Retro a thing of the past?
  plates, muscular wheel flares, and tow hooks convey strength.". Hyundai used three ultralightweight structural ribs to form the safety cage. The ribs connect to a suspended surfboard-shaped spine. A prominent hood scoop and latches on the clamshell hood project an aggressive demeanor. The windshield's...
• Gas-Assist Molding: Not just for hollow parts
  . Gas-assist designs. There are three categories of parts made by gas-assist. The first group includes tube and rodshaped clothes hangers, armrests, and a wide variety of handles. The second consists of large cover or panel-shaped parts containing ribs, usually for automotive or business machine...
• Designing for investment casting
  many sections meet at one point, and stagger meeting points to avoid large mass points. Also, thin walls may need ribs or shoulders for the required strength. Finally, if the overall shape of the design is complex, you may have to use an alloy that is more easily cast to get good flow into all sections...
• Glossary of Forging Terms
  (such as a forging) in a trimming press. Hot upset forging A bulk forming process for enlarging and reshaping some of the cross-sectional area of a bar, tube, or other product form of uniform (usually round) section. It is accomplished by holding the heated forging stock between grooved dies...

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