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  • Paul T's Avatar
    Today, 19:54
    Here are my latest pics of some of the new bits I've bought. I've gone from 20mm to 30mm bore:
    372 replies | 67136 view(s)
  • Paul T's Avatar
    Today, 19:42
    These are my first basic experiments with a wind / hydro permanent magnet generator (PMG) before fitting to the mechanical torque amplifier that I have built with the help of several engineering companies, mechanical designers, machinists and energy enthusiasts. I purchased this PMG as I believe it currently is the best off the shelf device to produce safe 12 volt electricity at low RPM. 12 volts is a safe voltage for myself and other interested people to experiment with. Typically a car alternator doesn't make any electricity without being spun to 1500 rpm - 3000 rpm. I am going to be fitting the PMG to the device I have built which the inventor claims multiplies the input torque.
    372 replies | 67136 view(s)
  • SINGHA Emmanuel Franck's Avatar
    Today, 14:13
    Hello everyone. please i'hve many problems about designing and automated tank truck loading bay. i don't even thing it's possible but my boss think it is. can some body have an idea?
    0 replies | 3 view(s)
  • SINGHA Emmanuel Franck's Avatar
    Today, 14:09
    Hii i'm Franck Mechanical design engineer student!
    0 replies | 2 view(s)
  • Dave Archer's Avatar
    Today, 07:37
    Are you trying to seal a liquid under pressure ? Any pressure will leak into the gap all the way down the bore and try to force the two alloy parts apart. A Design FAIL :eek: Back to the drawing board !!! Ha Ha..
    5 replies | 492 view(s)
  • oemodm's Avatar
    Yesterday, 13:15
    Hello everyone, I have an angled container, carrying 20kg, its bottom support includes a section of steel wire (A). I would really appreciate an easy way to approximate the tensile stress on this part. Any tips on ways to approximate stress in approximate terms give or take 10 or 20% would be great. Thanks so much / simon
    0 replies | 70 view(s)
  • vnmanpower's Avatar
    Yesterday, 03:19
    Vietnam Manpower - Company specializes in providing manpower to overseas now present our unlimited human resources are available and ready for hire following your demands. We have more 10 years' experience, get used to sending a thousand of workers in construction, agriculture, hospitality, oil and gas, manufacturing, etc to Saudi Arabia, Qatar, Dubai, Malaysia, korea, Taiwan, Japan,... We assure a high competition advantages thanks to a lower cost and simpler procedure. Our workers are not only hard-working but also discipline and loyalty. If you have any demands, contact us to receive the best manpower services in Vietnam via email: lana@vnmanpower.com or website: http://vnmanpower.com
    0 replies | 90 view(s)
  • victorsteels's Avatar
    17th Apr '15, 16:24
    i want to know types of Forged fittings....
    0 replies | 89 view(s)
  • CPPMable's Avatar
    17th Apr '15, 12:54
    Hi Jake, I can tell you what we do. We follow the ANSI Y14 standards as well. Have to be a little careful on what you are considering the name in our case. All of our parts have a numerically generated number from a database. For standard parts things we ship on a regular base or stock in inventory this number is convert to a more specific item identifier name. We then have a common name for each part (easy to setup in Creo and many other software) which is what I am assuming you are considering the name. For this name we follow the type of naming scheme, "Project; SubAssembly; Descriptor". For example ProjectX; Standard Frame; Support Bracket. We have always used colons since that is what our ERP solution manager works with best. For standard bolts and such the common name is the normal bolt naming convention. So it varies from part to part. This system has worked very well for use with hundreds of thousands of parts. As you said I think the standard is a little out of date...
    2 replies | 349 view(s)
  • ruth_evans's Avatar
    17th Apr '15, 11:01
    Hi there! My name is Ruth Evans, I am Public Manager at our research brain center. Currently we are looking for high-motivated, dedicated engineers to assist us in doing researches on different engineering topics. We welcome professionals in civil engineering, construction engineering, biomedical engineering, people with knowledge of MatLab are also very welcome. Researches should be completed in academic style, specific topics are very different and each of them is unique; very important is to create an original paper on the specific topic. For any additional information, please contact me via e-mail: engineering(dot)phd(dot)job(at)gmail(dot)com Our rates start from $5 per page (275 words) and your authorship and intellectual property rights would belong to our company (as we are buying your done-work).
    0 replies | 1 view(s)
  • ruth_evans's Avatar
    17th Apr '15, 10:57
    I am Ruth Evans - Public Manager at our US local research agency. Nice to be here and be a part of this great community.
    0 replies | 1 view(s)
  • oemodm's Avatar
    17th Apr '15, 01:54
    Dana & Lochnagar - thank you both. 215N is roughly 20kg which is nice to understand. Thankyou both again.
    6 replies | 356 view(s)
  • abhiyant sinha.94's Avatar
    16th Apr '15, 18:16
    I am from India
    345 replies | 46886 view(s)
  • abhiyant sinha.94's Avatar
    16th Apr '15, 17:59
    I was hoping for the existence of such kind of app where I can share and get some useful knowledge about the design engineering ........ and finally found it at play store... :)
    107 replies | 19420 view(s)
  • abhiyant sinha.94's Avatar
    16th Apr '15, 17:46
    I am from India (chhattisgarh) .....pursuing bachelors degree in mechanical engineering..........
    345 replies | 46886 view(s)
  • Dana's Avatar
    16th Apr '15, 16:28
    Oops! You're right, I missed multiplying it by pi. Corrected: I = 3.22E-10, M = 21.5, so force = 215N If I'd converted it to lbf, the error would have been obvious to this dumb Yank who never uses metric units... 48 pounds sounds right; 15 pounds doesn't.
    6 replies | 356 view(s)
  • chris_jmda's Avatar
    16th Apr '15, 15:46
    JMDA had a fantastic 2014, and we are now in a position to further expand our team and bring in an experienced design engineer. This is a unique opportunity for a talented individual to join a small design consultancy with big ambitions and global reach. We are seeking someone with proven ability to turn ideas into viable products. We want to find a candidate with an entrepreneurial spirit to help build JMDA and lead projects. This role has career advancement potential and the opportunity to influence at a strategic level. As a senior product design engineer, you will work on a broad range of product design, problem solving, detailed engineering, project delivery and business development activities. You will be expected to contribute to various phases of the product development process, applying your knowledge to engineer feasible design solutions. Skills and Experience
    0 replies | 0 view(s)
  • Lochnagar's Avatar
    16th Apr '15, 13:50
    Hi Dana, Just one point:- You must have got a faulty calculator - because the first computation is arithmetically incorrect - and it follows that the second computation will be incorrect too. Sorry to be the bearer of bad news.:( Hope this helps.
    6 replies | 356 view(s)
  • Dana's Avatar
    16th Apr '15, 13:14
    Moment of inertia is pi*r^4/4 or 1.025E-10 m^4 stress = My/I so M = stress * I/y or 300,000,000 * 0.0000000001025/.0045 = 6.8 N-m Since the distance from the bend is 100mm, the force is 68.3N That's to just barely bend it so it stays bent, in reality you'll need more force to make a useful bend. And note that smaller forces will bend the bar, but it will spring back straight since the yield stress isn't exceeded.
    6 replies | 356 view(s)
  • Tord's Avatar
    16th Apr '15, 12:04
    You need to be exact about the material that you use. Here is a site that can help you to with the proper material and also custom design what you need: http://www.sopranotech.com/products-plastic-injection.php Good luck!
    6 replies | 2093 view(s)
  • JackYan01's Avatar
    16th Apr '15, 10:03
    Hello,i'm a project engineer from win fortune,china. Jack Yan Project Engineer Skype: winfortune.tooling www.winfortunetech.com tooling@cnwinfortune.com
    345 replies | 46886 view(s)
  • JackYan01's Avatar
    16th Apr '15, 09:33
    The classify of mold base : According to the mold runner, the mold base has been divided into three different types as follows. 1. The side gate system mould base structure 2. The three plate type system mould base structure 3. The pin point gate system mould base structure
    0 replies | 340 view(s)
  • sunnyss's Avatar
    16th Apr '15, 06:56
    Hello everyone. I designing a feeder for oil PET bottle‘s handles. I consider the use of centrifugal feeder because of higher production rate required. But, how to sorting?
    0 replies | 0 view(s)
  • joanna's Avatar
    16th Apr '15, 04:19
    The reasons for blocking a lot, screw conveyor conveying material space is a very important matter;Intermediate bearing block material more easily.Screw conveyor is the most common fault, and severe burning motor mini mix concrete batching plant, the screw axis of the material;Breakage and screw axis, affects the normal production.Blocking light can affect production increases power consumption, to prevent the screw conveyor, can take the following measures: Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:mobile block machine,JZR series diesel portable mixers,Planetary Concrete Mixer Machine,etc. We will provide you with the best product and service. All kinds of screw conveyor of reasonable selection of technical parameters of the screw conveyor, screw conveyor, such as slow speed cannot too much. Add the port of...
    0 replies | 0 view(s)
  • sunnyss's Avatar
    16th Apr '15, 04:00
    Hello everyone. I designing a PET bottle handles automatic feeder, I consider using centrifugal feeder, but how sorting?
    0 replies | 1 view(s)
  • oemodm's Avatar
    16th Apr '15, 01:52
    Thanks Dana Yield strength = approx 300mpa / (www.azom.com/article.aspx?ArticleID=6780) Distance from bend = 100mm Y = 4.5mm I = I've googled how to do this, its beyond my level.....help.... Could someone help me calculate how much force/weight will bend this bar
    6 replies | 356 view(s)
  • Dana's Avatar
    15th Apr '15, 16:55
    Not enough information... 9mm round bar, square, rectangular? Where is the bending load being applied, on the short end? In general the bending equation is S = My/I where S is stress (you will use the material's yield stress here), M is the bending moment (force applied times distance from the bend), y is the distance from the neutral axis (in your case this will be half of the bar's thickness) and I is the moment of inertia for the bar shape.
    6 replies | 356 view(s)
  • varouxisj's Avatar
    15th Apr '15, 16:23
    hello would like to ask if these files you have on sale if so at what price you have HAVE OTHER 3d models send me your reply to this email (couriersilver@gmail.com) Thanks
    51 replies | 15643 view(s)
  • chris_jmda's Avatar
    15th Apr '15, 15:38
    Product Design Engineer JMDA Design had a fantastic 2014, and we are now in a position to further expand our team and bring in an experienced design engineer. This is a unique opportunity for a talented individual to join a small design consultancy with big ambitions and global reach. We are seeking someone with proven ability to turn ideas into viable products. We want to find a candidate with an entrepreneurial spirit to help build JMDA and lead projects. This role has career advancement potential and the opportunity to influence at a strategic level. As a senior product design engineer, you will work on a broad range of product design, problem solving, detailed engineering, project delivery and business development activities. You will be expected to contribute to various phases of the product development process, applying your knowledge to engineer feasible design solutions.
    0 replies | 0 view(s)
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