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  • prtraj's Avatar
    Today, 03:52
    @Erich, Thank you brother. I have already done that too. Google is like my brother/friend/father or whatever you can say for me now a days. But the problem is my employer also has google as his mentor. He also have done the research and if he finds that I am trying to build another copy of already existing models, then simply he will show me the path of resignation. :) @bdeuell, And coming to the point where you have recommended to leave a small air gap at the top, it will not be enough for all the fishes. I am also working on that and maybe installing a oxygen cylinder like thing on the side of the tank to regulate continuous oxygen flow but its just in the planning phase. :D Anyways thanks for the ideas by the way!!
    5 replies | 171 view(s)
  • Imzautomation's Avatar
    Yesterday, 21:58
    Hi Dana thanks for the reply yes I was thinking of gearing down the stepper with worm drive as it is self locking I have ordered a plastic worm and spur combo will give it a try do you have any idea how to go about spring loaded brake when the power goes off awaiting your reply
    5 replies | 259 view(s)
  • Dana's Avatar
    Yesterday, 20:51
    Forget the torque amplifier; use a bigger stepper motor if necessary. Unless you gear the motor way down it's unlikely it will be self locking with power off as the cable drive is fairly efficient. A better approach might be a spring loaded mechanical brake that engages when the stepper power is lost.
    5 replies | 259 view(s)
  • Erich's Avatar
    Yesterday, 20:15
    You are not the first person to design a fish transport tank. Google is your friend. try Fish transport tank. You will find many different designs to the problem. You will also find people selling what you want. Maybe recommending a purchase will solve your problem faster and at less overall cost.
    5 replies | 171 view(s)
  • bdeuell's Avatar
    Yesterday, 19:45
    Baffles will impede the flow of water from one side of the tank to another. They are typically plates which divide your tank into smaller sections but do not completely separate them. Holes or gaps at the edges of the plates allow fluid to flow between the different sections (important for filling and draining) but restrict the rate at which the fluid can flow from one end of the tank to the other. The baffles should be installed perpendicular to the direction of motion you are trying to restrict, if you want to restrict movement in two directions you could construct a grid of baffles. You will need to asses the risk of fish being injured on these baffles. understanding you can not completely fill your tank is it possible to leave a small gap of air at the top?
    5 replies | 171 view(s)
  • prtraj's Avatar
    Yesterday, 19:15
    Thank You very very much for your reply. Please bro can you explain how baffles will help in reducing the liquid movement and can you guide as to where i need to install the baffles in the fish transportation tank. Also, if i fill the tank completely all the way and don't keep any void above the water surface, fishes will die because they will be requiring surface oxygen and they simply can't rely on dissolved oxygen in water for respiration. So, second option is not quite viable but i will take it into consideration. I also had thought about these previously. A quick reply is highly solicited.
    5 replies | 171 view(s)
  • bdeuell's Avatar
    Yesterday, 16:55
    Design baffles in your tank to minimize splashing/sloshing of the water. These are typical in large tanks (for transportation or on mobile veivhles) to prevent exesive liquid movement. Also if the tank is closed on top and filled all the way (or close to all the way) water movement will be minimized as there will be no voids (regions of air) in the tank for the water to shift into. Hope this helps, let me know it it is not clear why these would reduce water movement.
    5 replies | 171 view(s)
  • mani007's Avatar
    Yesterday, 06:06
    mani007 replied to a thread Dimple Design Question in Sheet metal
    how dimple on metal sheet increases its strength?
    2 replies | 1879 view(s)
  • Witsel007's Avatar
    1st Sep '14, 06:04
    Hmm, I want to design only my website, as well as some photoshop work.... :)
    44 replies | 10982 view(s)
  • K.I.S.S.'s Avatar
    31st Aug '14, 18:29
    Hi tomcatonnet99, OK, any advice given on a Friday night by myself should be reviewed in isolation and include a healthy amount of reverse 'beer goggle' engineering... Although, as it happens - I think that the concept is good. With the exception of the suggestion that the drive shaft doesn't require a cam and can simply have a drive wheel. It can, but then of course you'd require a belt tensioner to take up the slack between the ellipse peak, and that might be a bit tricky with a 90 degree twist in the belt... Anyway, here's a few sketches of an elliptical cam assembly that might suit your requirements,,,
    26 replies | 1818 view(s)
  • K.I.S.S.'s Avatar
    29th Aug '14, 20:17
    Hi tomcatonnet99, Don't worry - I'm somewhat perversely proud of the fact that I've never sat an exam in my life. I won't bore you with the details, but the 'education' I was forced to endure was so sub-standard that I simply didn't attend and rather focused my energies on educating myself instead. OK, like anyone, I suppose I'm a sucker for a nice comment, so below are a few images that I just sketched for you - they're real 'etch-a-sketch' images and not dimensionally accurate in any respect. Also, I should learn to be more cautious of my 'throwaway' comments, as they generally come back to haunt me... the throwaway comment on this occasion would be the double drum concept... Below is a plan view of a concept model for you.
    26 replies | 1818 view(s)
  • MettlerToledoPI's Avatar
    29th Aug '14, 19:31
    METTLER TOLEDO SAFELINE is the global market leader in the field of industrial metal detection for the food and pharmaceutical processing and packaging industries.The Mechanical Designerwill provide computer-aided design layout and detailed drafting support for new product development. This position is located in Tampa, FL. Essential Duties and Responsibilities include the following: Designs quality systems using manufacturing procedures within Mettler Toledo’s guidelines while maintaining the schedule Designs systems based on design-function relationships, serviceability, materials and methods engineering, production costs, and client specifications Maintains highest achievable 5S ratings throughout all areas of responsibility Always considers the company Green Initiative when planning activities, procuring supplies or disposing of materials or other assets
    0 replies | 200 view(s)
  • a92muthukumar's Avatar
    29th Aug '14, 18:31
    Dear sir, I have a 1.5 years of experience in Product Development & Tooling Engineer (Mechanical). Also i'm immediately available. My mail id is - a92muthukumar@gmail.com Thanks and regards, Muthukumar.A
    1 replies | 364 view(s)
  • prtraj's Avatar
    29th Aug '14, 16:00
    Hello Brothers, Hope everything is well and good. Well, I have a small query and hope some of you might be of some help in this regard. The problem is I am trying to design a live fish transportation tank for work, which will be used to transport fish fry(s) (baby fish) or full grown fish(s) to long distances from the hatchery. Since my project is Application of Plastics in Aquaculture, so I will be using plastic as my material for the tanker. I will be going with FRP. Previously, I had designed a tanker but it faced one big drawback. The problem is water splashing. So, guys can you guide me how can i minimize this water splashing inside the tank. In my previous design mortality rate was alarming, i.e., out of the total fish fries transported, around 20-25% fish fries were dead. Though all other parameters for fish environment like dissolved oxygen, water pH, etc. were correct and as per standard, but still mortality rate was a let down. So, I just want a solution to minimize...
    5 replies | 171 view(s)
  • tomcatonnet99's Avatar
    29th Aug '14, 14:39
    K.I.S.S, pls are you able to explain what you mean by "think of a figure 8 on its side, but without the curves. You could probably quite effectively use a scotch yoke to control this function" as the shaft of the motor and the scotch yolk would be parallel to each other and the cam I take it would need to be on the driving shaft of the motor ... how do I couple this with the scotch yolk to allow linear travel proportional to the pitch pls thanks
    26 replies | 1818 view(s)
  • tomcatonnet99's Avatar
    29th Aug '14, 13:05
    what a wonderful message, thanks heaps for it; I now feel motivated to go ahead with this and not shelve it ... Will have a look at Cams in more depth and the twin cone (which I haven't understood the workings of and the relation to the scotch yolk - I think you mean using the yolk as the twin cone ...?) You're right flexibility in any project is the key to its success and diverse application/s ... When I build something I try to make it such that I could use it for several purposes and try to render it the most flexibility I can ( wish I was serious about my studies when younger, was interested in mechanical and electrical engineering and now with Mechatronics available to this generation I think thats exactly what I had envisaged to be a perfect mix of engineering :)
    26 replies | 1818 view(s)
  • draftingautocad's Avatar
    29th Aug '14, 07:46
    In the mechanical, civil, and architectural sectors, CAD drafting technology has gained optimum recognition. By automating the process of drawing and designing, draftsmen can create accurate designs. Manual drawing is a cumbersome process. Since there is a huge probability of errors in manual methods, most engineering enterprises are into CAD software technology. Many draftsmen well-versed in technical drawing are undergoing training to become completely equipped with computer-aided designing and drawing.
    20 replies | 7038 view(s)
  • Imzautomation's Avatar
    28th Aug '14, 18:56
    Any suggestions guys waiting for your replies
    5 replies | 259 view(s)
  • Lauren Tyndall's Avatar
    28th Aug '14, 17:33
    Thank you, much appreciated. What do you mean by paint? Are you referring to the colors that some 3D Printers can print in?
    3 replies | 835 view(s)
  • Ernestspalmer's Avatar
    28th Aug '14, 13:44
    Manufactured risks are usually hazards which can be produced by your modernization procedure, specifically by simply modern advancements inside scientific disciplines in addition to technological innovation. Many people develop possibility environments that contain minor historical referrals, and are therefore mostly unstable.
    4 replies | 785 view(s)
  • Lochnagar's Avatar
    28th Aug '14, 06:45
    If you take your actuator Firgelli PQ12 and add a "trunion" to it (near where the 3mm half hole is located). You will probably need to clamp the trunion on to this actuator. See picture below of what a trunion mounted cylinder looks like if you are not aware of what a front mounted trunion on an actuator looks like. By adding a trunion - you will find the operating geometry is significantly improved- and it is a fairly standard technique when the space available is limited. However, you will need to make use of - what you say is possible "If necessary the housing can be increased on the Y axis". http://www.aphusa.com/index.php/portfolio-view/c10_industrial_hydraulic_cylinders/ Hope this helps.
    4 replies | 236 view(s)
  • K.I.S.S.'s Avatar
    27th Aug '14, 18:16
    You're welcome - and I'm picking up a new camera tomorrow...:D But if I might suggest, gears are probably not the way to go. The reason for this is that gear trains are designed to provide specific output ratios for a given input. What you would ideally like to achieve will involve one fixed input (the rotational speed of your winding shaft) relative to a variable input, which would be the variance in pitch you want to experiment with, and also, for larger diameter coils with substantially more windings, the allowance for the incremental increase in diameter and subsequent additional material per layer. In the late 80's, prior to everything going the CNC route, there were some wonderful workshop machine tools called 'Cam Auto' machines. They were limited in terms of flexibility, as the set up of the machine was the design of Satan himself... but when they were set up properly, they performed a flawless job. In fact, lots of these machines were and still are set up to perform a...
    26 replies | 1818 view(s)
  • mehtak01's Avatar
    27th Aug '14, 16:22
    Summary of Position This is a unique position for a candidate that aspires to be part of a dynamic Engineering/Design team. This position is intended for someone that has acquired the necessary education and training, but lacks significant years of experience. The position is accountable for designing, modelling and detailing in a supportive role on an engineering team focused on the continuous improvement of current and future production lines, and related equipment, both local and global. As a member of a team, a high degree of interaction is required between the position and other team members as well as other functions within the business unit. Principal Accountabilities Transforming initial rough design sketches or conceptual models into finalized 3D models and prepares thorough 2D detail drawings. Creating Bill of Materials (BOM), assembly drawings, and work directly with vendors to request quotes and answer technical questions relating to the design. Pickup on...
    0 replies | 169 view(s)
  • mehtak01's Avatar
    27th Aug '14, 16:21
    This position is responsible for planning, evaluating, designing and modelling of manufacturing equipment, both local and global, that pertain to the continuous improvement of current and future production lines, and related equipment, where catalysts are precision coated and where a high degree of automation is expected. The incumbent’s responsibilities begin at scope creation and go through to commissioning and internal customer support, while ensuring project specifications are met. As a member of a team, a high degree of interaction is required between the position and other team members as well as other functions within the business unit such as Project, Process and Controls Engineering, maintenance and line technicians. Principal Accountabilities Conducts and directs studies to determine requirements of new equipment. Designs and models new equipment and processes, or modifications to existing, as needed. Generation of standard engineering calculations. May...
    0 replies | 143 view(s)
  • wmkgabung's Avatar
    27th Aug '14, 08:34
    wmkgabung started a thread Hello in Pop in and say hello!
    Just joined the group MDF. At first glance looks like its what I have been looking for. My name is Walter M Kgabung a design engineer in Botswana. I have BEng (Hons) in Mechanical Engineering from then Polytechnic of Wales (now Glamorgan University) Uk and a MSc in Technology and Innovation Management from Sussex University. I am currently doing electro-mechanical design for infrastructure projects and solar system design. I look forward to gaining more o new developments in the field and possibilities of getting involved in projects with other design companies or institutions abroad, through collaboration, partnership, consultancy or job. Hope to hear more from the forum
    0 replies | 264 view(s)
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