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  • pipingstress's Avatar
    Yesterday, 20:08
    Tee Connection: A short literature for piping engineers ......
    0 replies | 18 view(s)
  • pipingstress's Avatar
    Yesterday, 20:07
    Basics for Fatigue Analysis of Piping System using Caesar II ......
    0 replies | 14 view(s)
  • pipingstress's Avatar
    Yesterday, 20:06 ......
    0 replies | 29 view(s)
  • pipingstress's Avatar
    Yesterday, 20:05
    0 replies | 14 view(s)
  • pipingstress's Avatar
    Yesterday, 20:04 .....
    0 replies | 13 view(s)
  • bdeuell's Avatar
    Yesterday, 05:25
    What about something along the lines of an seal installation tool (used in assembling hydraulic cylinders). I looked for a video but found the original patent for the tool I think the pictures do a decent job of showing how the tool is used. From my experience they take some finesse to use but adding some features (ridges) to the tool end, that mate with the grommet profile, might keep the grommet in position and make automation more reliable. Another idea more along Kiss's approach is to press the grommet through tool with a tapered hole. Similarly i would recommend a rocking motion as to not push the entire grommet at once. I am picturing something that functions like an orbital riveting tool. However unless there is sufficient stiffness in the flanged top and bottom of the grommet this approach probably has little chance of success.
    2 replies | 146 view(s)
  • K.I.S.S.'s Avatar
    28th Oct '14, 17:39
    Hi, Perhaps something similar in concept to an automotive tyre beader? I'm assuming the grommet has an annular groove that allows it to locate? In my experience, it's always better to pull a rubber grommet whenever possible, as opposed to pushing - that way you avoid compression and expansion. With the dimensions you've given, that's quite a lot of compression that the grommet has to undergo, so whatever you do, I'd certainly not attempt it in one linear motion - the tool should be uneven and rotate, with a guide like on a tyre beader. That would be my first attempt.
    2 replies | 146 view(s)
  • Hass's Avatar
    28th Oct '14, 11:46
    Hello all. I want to know what engineers call a mechanical system which is basically made of two parts; 1- a shaft with screw threads on it. 2- a hollow tube with screw threads on the inside wall matching threads on the shaft.
    0 replies | 190 view(s)
  • s_vasanthbabu's Avatar
    28th Oct '14, 08:37
    Could any of the experts provide me details on how to identify the tooling direction from a Class A surface that has a complex profile as well as the mating part is a 3D curved surface.
    0 replies | 99 view(s)
  • s_vasanthbabu's Avatar
    28th Oct '14, 08:32
    Hello Friends Mechanical Design forum really provides a virtual platform for all domain expertise to share knowdgewares. And, am Vasanth from chennai working on the plastics design domain and have a healthy exposure on Automotive cab trims design. Hope i would learn a lot over here and share my knowledge as well. Thanks Vasanth
    0 replies | 77 view(s)
  • spenal's Avatar
    28th Oct '14, 07:03
    I am currently going into my senior year at a well known State school in New Hampshire. I always enjoyed the mechanical aspects of things and even the engineering that follows into it but I never went forward into a engineering major. Honestly, I thought I was going into Business like the rest of my siblings but I knew I wanted to do something different. As I graduated HS, I fell in love with this school in NH and a major that is almost 8 years old and becoming very popular. Its called Sustainable Product Design & Innovation. Its a great major with aspects of mechanical engineering, industrial design, environmental studies and even business. We even have a 2 year old, brand new building with all new equipment from CNC machinery, 3D printers and high tech computers. The major is the closest thing to engineering the school has. We are one of a kind in this major, learning not only the basics of design and manufacturing but how to involve environmental issues into it. We...
    0 replies | 82 view(s)
  • thermal's Avatar
    27th Oct '14, 19:26
    8 replies | 1729 view(s)
  • highjump01's Avatar
    27th Oct '14, 15:58
    Hello All, I am currently pulling my hair out over a design for automatically pushing a rubber grommet into a hole! does anyone have any ideas or concepts of tool heads that could perform this operation?? Holes size is °15.5mm Grommet outside dia = °23.5mm width = 13mm inside Dia =°12 Thanks.
    2 replies | 146 view(s)
  • miltonbr's Avatar
    27th Oct '14, 15:09
    Dear Paul: Nobody can say that you are not persistent. If you search for inspiration for an unbalanced lever, see this video: But, before you say "eureka", note that the system only moves with the addition of external energy (from the hand of the inventor) and stops moving when the initial energy runs out (because of friction). There is no creation of energy .... a concept that everyone here already have trying to explain to you.
    327 replies | 43852 view(s)
  • DimakiHelen's Avatar
    27th Oct '14, 12:48
    As a new member, I would love to say hello to everyone in the forum. I perceive my presence, as a tool for mutual inspiration, memory refress and facilitation in use of modern design tools for eco and economical solutions. Therefore, I would welcome suggestions to join in more collaboratively and effectively.
    0 replies | 76 view(s)
  • faizulri's Avatar
    27th Oct '14, 12:17
    Hi there, This is Faizul from Uni of Duisburg Essen. Glad to meet you all.
    0 replies | 59 view(s)
  • vnmanpower's Avatar
    27th Oct '14, 10:30
    Hello everyone, I'm newbie here. I wish we have chance to talk more Nice to meet you!
    0 replies | 63 view(s)
  • Tibiksz's Avatar
    26th Oct '14, 23:58
    Hello all! Music helps me to exclude the outside world and sometimes the disturbing colleges too. :D Seriously I can concentrate on my work better if I listen to music. Anyway I need some background noise I can't stand the silence.
    19 replies | 7330 view(s)
  • armored cortex's Avatar
    26th Oct '14, 22:58
    Hello, Its the m134 mini gun that was designed by General Electric. Ive made some nice progress these past couple of days. The feeder/delinker is almost complete. There is a cam path I need to model up but Im not sure how to tackle that feature. In the mean time I moved on to the gun rotor.
    2 replies | 1220 view(s)
  • micha's Avatar
    26th Oct '14, 22:03
    Thanks AceEngineer!
    4 replies | 1097 view(s)
  • srdfmc's Avatar
    26th Oct '14, 20:21
    Could you be more explicit ? What is that other code. IF you mean FlexM (the one that check for the validity of your licenses), it might be that using another software already protected by FlexM will keep it active on your PC. Hence the possibility to still fire up MatchCad. My guess only. A SolidWorks license, for example, run via FlexM. So if you have SW installed and registered it might do the trick for you. The prob with ppl commenting on the net is that many don't have a valid license installed to run the software they are talking about. Hence, their comments can't really reflect the behavior of the soft. You shld discuss that with the guys at Mathsoft/PTC only.
    8 replies | 1729 view(s)
  • thermal's Avatar
    26th Oct '14, 19:50
    My MathCad version went warm when I was an active engineer. Now, I am retired and it is not economically sound for me to pay a licence. But, now and then I run into problems for which MathCad would be an excellent tool. On their site they insinuate that some functionality will remain after the 30 days trial licence period has expired. The formulation is:”You can still use MathCad”. Some commentators on internet state that this is a pure lie, or at least a half lie because it involves paying license for another code. Does anyone knows?
    8 replies | 1729 view(s)
  • Ani24's Avatar
    25th Oct '14, 05:40
    Hi this is Anil from India Thanks for Linkedin and Gareth gor great site
    317 replies | 39280 view(s)
  • bdeuell's Avatar
    25th Oct '14, 04:08
    My main concern would be the thread strength in the aluminum part. I would use a coarse pitch fastener as they are less likely to strip out. With the exception of thin wall materials where you can not get at least a couple full threads without using a fine pitch fastener but I would try to avoid this case. Edit: I assumed you were threading into the aluminum ...not sure if that is actually the case. Fine pitch fasteners have a higher tensile strength so the strongest fastener depends on your design.
    2 replies | 1162 view(s)
  • makhan129's Avatar
    24th Oct '14, 21:49
    Hi...i am from pakistan and doing mechanical engineering...i have keen interest in robotics , automotive and thermodynamics..:)
    317 replies | 39280 view(s)
  • AceEngineer's Avatar
    24th Oct '14, 19:16
    Mathcad is a very useful tool for any type of engineer that does design work. Learn it, if at all possible. It is especially useful for simulations and control algorithms. I also used it like a desk calculator for repetitive calculations. AceEngineer
    8 replies | 1729 view(s)
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