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  • Dana's Avatar
    21st Nov '14, 17:29
    HP = torque * rpm / 5252, so your 3HP at 1725 rpm gives 9.13 lb-ft or 110 lb-in torque. At mid stroke (when it's moving fastest) with a 0.875" lever arm, that's 125lb force. At the ends of the stroke when it's stopping and reversing, the theoretical force is infinite. Whether that force is sufficient to accelerate and decelerate your 75lb plate at 1725 cycles/sec is left as an exercise for the student...
    4 replies | 381 view(s)
  • Dana's Avatar
    21st Nov '14, 15:49
    What you describe (the plastic bushings in the front) is a pretty typical setup. Some dryers do have the drum supported by rollers below it. Usually the plastic bushings last for the life of the dryer (typically about 10 years). Are the bushings wearing from axial or radial loads? If axial, likely the rear bearing has worn and is allowing too much axial motion. Either way, replace the plastic bushings (and the rear bearing if necessary) and you should be good for a good while longer. One other possible issue is corrosion of the drum from the moisture causing the plastic bushings to wear prematurely; if that's the case it might be time for a new dryer. Industrial suppliers sell a variety of small wheels or rollers with bearings, sold as caster wheels or conveyor skate wheels. Locally available skateboard wheels or snowmobile track rollers might work. I know where I'd look in the US but I don't know about UK suppliers. But if it's axial wear then support rollers won't help.
    1 replies | 99 view(s)
  • Auto Engineer's Avatar
    20th Nov '14, 21:25
    Not sure if this is the right part of the forum to put this, but here goes. The dryer incorporates a drum where the drum is located by a plain bearing through a brass rectangular bush into the back supporting wall. The drum has a rubber belt around the circumference and is pulled taught at the bottom over the motor drive spindle, which is a serpentine belt design with about five grooves in it. The front face cover of the dryer, which houses the door has four plastic type plain bearings fitted into it that guide the drum when in motion. The problem. When damp washing is placed into the drum and running the drum rubs hard against these four plastic type bearings and has now overheated the belt and burned it to the point that it has broken. Without washing in the drum and now while the belt is broken, the drum can be easily turned but with very little effort the drum actually rubs against these front plastic bearings and I can now understand that when the belt is fitted under...
    1 replies | 99 view(s)
  • Dovile's Avatar
    20th Nov '14, 15:23
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    0 replies | 758 view(s)
  • PierArg's Avatar
    20th Nov '14, 09:51
    Hello JoeS and welcome to the forum! I quote bdeuell answer. The problem is rather simple: if you know the mechanism geometry it is simple to transform the motor torque in linear force.
    4 replies | 381 view(s)
  • vnmanpower's Avatar
    20th Nov '14, 03:20
    Dear Sir/Madam, We are the leading Manpower Supplier in Vietnam where 70% of population in the working age. With more than 10 years’ experience, we have already fulfilled the requirement of Vietnamese manpower to many countries including Saudi Arabia, Qatar, UAE, Kuwait, Taiwan, Japan, Malaysia...with different kinds of quality (skill, semi-skilled and unskilled).Vietnamese workers are known as hardworking, punctual and have high sense of responsibility and discipline matching the demand of the following sectors and industries: - Construction industries: WE supply engineers, foremen, masons block, plasters, steel fixers, carpenters, form workers, painters, plumbers, helpers, drivers, operators, general workers, etc. who are always ready to be trained and work in professional environment. - Drivers and operators: WE respond long/ heavy/ light vehicle, crane, excavator, truck drivers, etc. with a good qualified and lower price. - Agricultural workers: WE are available for...
    0 replies | 169 view(s)
  • bdeuell's Avatar
    20th Nov '14, 02:10
    torque output will vary with the speed of the motor, the actual speed under load not the rated speed. there is a good image of the torque speed curve for induction motors here (if thats what you have): Im sure you have done the same calculation already but i calculated your motors torque output at rated speed and power. I got 9 ft-lb which would yield a minimum linear force of 125 lb assuming no loss in your mechanism. hope this helps.
    4 replies | 381 view(s)
  • ryu05's Avatar
    19th Nov '14, 21:54
    Hi guys, Lucas here from Romania, to be more exactly Timisoara.
    323 replies | 41781 view(s)
  • Steve6br's Avatar
    19th Nov '14, 21:33
    It may be coincidence but the e-drawings viewer that is free on line reads solidworks and dwg files. It also has its own e-drawings format that is lightweight and suitable for e-mailing drawings. I suspect this may be the viewing package your customer is using? Go to the e-drawings website and you will find a translator that allows solidedge to output e-drawings format files directly..... E-drawings files cant be edited but if your client is using a viewer he cant edit them anyway....
    2 replies | 723 view(s)
  • Auto Engineer's Avatar
    19th Nov '14, 20:51
    What happened ? Which came first the chicken or the egg? A bit more detail given in this thread to work with?
    4 replies | 381 view(s)
  • Auto Engineer's Avatar
    19th Nov '14, 20:44
    Just a little lost in what is being asked at the moment, you say in the title Piston Force based on Horse Power, but then change direction and ask about a force on a plate? Maybe a diagram would help?
    1 replies | 316 view(s)
  • antonio.baron's Avatar
    19th Nov '14, 20:24
    I just have found on YouTube your answer look for bending hollow sections. And if there's no option for this in your workshop or suppliers, I suggest to fabricate the different sections and weld them together nice and easy but will increasing the costs a lot more. Or cut the profiles (50 and 100) with the needed shapes, bend and weld. As you are cold forming the section or welding you will need to perform a stress releaving to avoid future cracks. If you select the 100mm side (facing the rollers) you will need less force to bend it due of the moment of area. Cheers.
    5 replies | 2199 view(s)
  • CPPMable's Avatar
    19th Nov '14, 18:23
    There is a new ability in Creo 3 which has been built on this functionality of cross platform sharing. It even converts features to their respective feature in the new format. I have never had good luck with CADfix with any models I have used it on. Maybe some simpler models it can pump out no problem. The new functionality in Creo 3 is pretty impressive in its ability. Some major collaboration between different vendors to get it to its current point.
    3 replies | 1565 view(s)
  • JoeS's Avatar
    18th Nov '14, 18:12
    Hello All! I have a motor driving an eccentric arm which drives a shaft that pushes a plate back and forth. The motor is 3HP, the RPM is 1725, the plate moves a total of 1.75" I need to find the force of the plate as it moves out. I am thinking if I get torque from the HP and the RPM I'm heading in the right direction
    1 replies | 316 view(s)
  • JoeS's Avatar
    18th Nov '14, 17:50
    Hello All, I just found this website and thank goodness it exists. So I have a motor turning an eccentric arm that drives a rod pushing a plate back and forth (imagine an old locomotive). The motor is running at 3 HP at 1725 RPM. The stoke is 1.75" (so the radius of the eccentric arm assuming it is a disk is .875"). It moves a plate that weighs 75 lbm. I need to find the tonnage force the plate pushes.
    4 replies | 381 view(s)
  • vnmanpower's Avatar
    18th Nov '14, 09:42
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    0 replies | 1452 view(s)
  • KevinC's Avatar
    18th Nov '14, 07:32
    Hey, i don't believe this is the thread that you should discuss this matter in. Maybe you should open a new thread. You should reword your sentence before posting in the new thread.
    5 replies | 2199 view(s)
  • vnmanpower's Avatar
    18th Nov '14, 04:49
    Finding the best candidates who can fit with your culture and contribute to your company is a challenge and an opportunity. Keeping the best those candidates, once you find them, is easy if you do all things being right. The specific process will help you with recruiting and retaining all the talent you need. We – Vietnam Manpower JSC understand those challenges to get the right candidates for the right jobs. Our company has forced ourselves to have always a rigorous recruitment process which ensures that our customers would satisfy at our professional service. Here are tips for our recruiting: 1. Once the terms of engagement have been agreed, we source the candidates through: · Our Vocational Training Systems and Our Sub-recruitment Agencies · Our Active Databank · Job Posting in Job portal · Headhunting Activities · Advertising 2. Personal Interview and Screening
    0 replies | 707 view(s)
  • cam2248's Avatar
    18th Nov '14, 00:03
    It seems that stock drive products has a nice selection of stainless: Hmm. The sizes seem to be too small for your applications, though. I will leave this post here in case someone else will find it useful.
    10 replies | 4473 view(s)
  • roserim's Avatar
    17th Nov '14, 22:10
    My computer is pretty slow today, and I submitted before I was able to finalize what I wrote. Where can I find what I submitted? Thanks!
    1 replies | 2187 view(s)
  • CADfix's Avatar
    17th Nov '14, 11:33
    Hi Bill, If he only requires a b-rep model (without the ability to parametrically edit the file), then there is no reason not to accept a non-native file (I suggest Parasolid for SolidWorks, and ACIS for AutoCAD). These file formats are native to the CAD packages geometry engine, and are therefore identical to the native geometry in their respective native formats. If however your contact is after the ability to modify the history, features, and have a linked drawing, then he will require the native files. The only way to achieve this with this combination of systems is to model the parts in SolidWorks. I can provide support for file conversions using CADfix is this is appropriate.
    2 replies | 723 view(s)
  • CADfix's Avatar
    17th Nov '14, 11:24
    Nguyen, Many of the CAD packages have translators that are good to a point: the problem is that they will only manage files of particular versions, and they do not have any finer control. Translation software needs to be right up to date to ensure a trustworthy conversion. My two suggestions would be: 1 - Try using another format. If possible use Parasolid instead of sldprt, this should be more reliable (if you can get it). 2 - Use a professional translation software such as CADfix. I am able to arrange this as a service. I hope this helps
    3 replies | 1565 view(s)
  • ecommercewp's Avatar
    17th Nov '14, 10:34
    There is little mention of anything directly relevant to modern design and engineering practice.
    4 replies | 1742 view(s)
  • CADfix's Avatar
    17th Nov '14, 10:29
    Hi Everyone. I work for a US owned company (ITI TranscenData based in Cincinnati), but I work from the Cambridge office (UK).
    323 replies | 41781 view(s)
  • maheshmurali's Avatar
    17th Nov '14, 08:58
    Hi, I am Mahesh Murali, from India
    323 replies | 41781 view(s)
  • maheshmurali's Avatar
    17th Nov '14, 08:56
    hi, I am from India
    323 replies | 41781 view(s)
  • vikas jain's Avatar
    17th Nov '14, 01:21
    i am mechanical engineer.I have the tools knowledge to built the prototype . It can make faster because i am making prototype from 6 year on software and working prototype i have made more then 100 prototype.
    27 replies | 7792 view(s)
  • K.I.S.S.'s Avatar
    16th Nov '14, 16:36
    Hi Steve, OK, I'm almost on holiday... As Auto Engineer suggested, a automated strain gauge is also a very easy way of determining what you need to know with empirical testing (always the most reliable way of testing...). I would add that in order to save costs, be sure that you inform the tester that you want to determine the point of nonelastic deformation, as opposed to the failure load. Most strain gauge machines can determine this. But please don't give up on the idea of also trying to work it out for yourself - it's a very powerful tool that can help you in many ways. And it's usually bad teachers that produce bad students, but these days the internet can provide you with all sorts of resources - it's really just a question of knowing where to look. OK, I'm off to the airport. Good luck
    6 replies | 1195 view(s)
  • BronkaG's Avatar
    16th Nov '14, 11:53
    Hello, i was asked to help make a portable base for hydraulic manipulator arm Palms 680. Could anyone give any suggestion on a matter, how to design it. does it mater how big base itself should be or its just weight of the base that matters. Arms parameters: Span- 6.8m Max load 47kNm
    0 replies | 149 view(s)
  • Auto Engineer's Avatar
    15th Nov '14, 22:55
    Hi Steve, Just a thought that might help you. A very long time ago when I was at University they had a machine that loaded wires etc and produced graphs of the force etc, if you take your prototype and ask a lab technician to load test it for you, that might save you a lot of headaches if the math is a problem?
    6 replies | 1195 view(s)
  • K.I.S.S.'s Avatar
    15th Nov '14, 18:53
    Hi Steve, Thanks for the clarification, but as of today I'm taking my first holiday in three years, so I'll be off the radar for a couple of weeks. If some other kind forum member would like to assist Steve...? If not, I'll assist when I'm back, but in my humble opinion the intent of this forum isn't really to spew out answers to specific engineering problems, but rather to guide someone seeking an answer in the right direction. With that in mind, try the following - calculate the cross section of the smallest area of your part. This is very easy to do. will provide a good start. As your part has a hole in it, you will need to separately calculate the extent of material that your hole removes from the solid body and subtract this from the first answer. This is also easy - Admittedly, this will not provide you with a precise answer as the cylinder you are...
    6 replies | 1195 view(s)
  • Dovile's Avatar
    15th Nov '14, 16:19
    Om jobbetNorden Machinery i Kalmar expanderar och rekryterar en Automationsingenjör VI ERBJUDER Vi erbjuder ett intressant och utmanande arbete inom området programmering, automation och mekatronik för dig som vill trivas och utvecklas i ett expansivt och tekniskt ledande maskintillverkningsföretag. ROLL OCH UPPGIFTER Som programmerare inom mekatronik på Norden Machinery's automationsavdelning jobbar du med programmering av funktioner och maskiner som levereras till kunder i hela världen. Tubfyllningsmaskinerna karaktäriseras av snabba maskinförlopp, avancerad teknik och hög kvalitet. Maskinerna skräddarsys utifrån kundens krav och önskemål, programmeringen varierar därmed från projekt till projekt, både vad gäller omfattning och svårighetsgrad. Du är även del i utvecklingsarbetet av nya maskiner och utrustningar och arbetar tillsammans med automationsingenjörer som har stor erfarenhet inom området. Vid behov gör du även programbeskrivningar och testplaner samt utförande av...
    0 replies | 1355 view(s)
  • Dana's Avatar
    14th Nov '14, 21:35
    That's career, not carrier. Neither is "best". It depends on what's used most in the industry you expect to be working in.
    1 replies | 926 view(s)
  • RTom's Avatar
    14th Nov '14, 20:02
    RTom started a thread Hello Forum in Pop in and say hello!
    Hi! My name is Rafael, I am a new Mechanical Engineering with experience with many CAD, CAE and CFD software, such as SolidWorks, Ansys-CFX, Pro-Egineer, AutoCAD, OpenFOAM, HelyxOS and others GPL software. I have been in FormulaSAE and others investigations projects. I am glad to be part of this group.
    0 replies | 84 view(s)
  • Feasible Rob's Avatar
    14th Nov '14, 16:49
    Hi, it sounds good to work for a while in Canada, please check my profile: Best regards, Rob
    4 replies | 1379 view(s)
  • Harry_S_Truman's Avatar
    14th Nov '14, 15:42
    Hello. I actually would like to help you out with this project. I work as a Mechanical Design Engineer during the day and have had this position for 10 years. I am looking for some fun free-lance jobs. Designing an electric guitar would be pretty awesome. Please tell me more about this. thank you. Harry S T
    3 replies | 6801 view(s)
  • radu.corcodel's Avatar
    14th Nov '14, 15:37
    In my case the suppliers we work with have a repository on their website with either 3D PDFs or the part itself in various formats. Some websites: Hope it helps.
    1 replies | 941 view(s)
  • gaschult's Avatar
    14th Nov '14, 15:28
    I have 30yrs experience in the field of creating solid models and making them ready for the different steps in cmc machining.
    3 replies | 6801 view(s)
  • FL_STEVE's Avatar
    14th Nov '14, 04:03
    Thanks again
    6 replies | 1195 view(s)
  • FL_STEVE's Avatar
    14th Nov '14, 02:32
    Thank you so much for the info & your response, you are correct it is not a ring that will be used, please forgive me for not giving all info, I do not have a patent on this idea as of now and am also trying to do. The CAD sw was a free copy from emachineshop, design your product and send the design via the SW to be made by the same company. I believe it is a basic 3D modeling CAD sw, not near the quality of the others out their, it works that is for sure... So more explanation, there is a secondary part that encases the rod then a spring pin (roll pin) 1/16" (.069 give or take) in diameter that holds both parts together.... As far as acceleration there is really non, as fast as a human can pull using a 10 lbs pull, it only comes back so far about 1.5" max.. The fatigue that I was referring too was the walls where the hole is not the entire rod. I may have misread your post. The pic below shows the opening of the second part... Thank you, Steve
    6 replies | 1195 view(s)
  • armored cortex's Avatar
    14th Nov '14, 00:08
    Hello! Ive made a bit more progress on the project. Ive decided to put the 1:1 scale model on hold and work on a simplified version instead. I intend to sell this model when it is complete. I only have the housing, the clutch assembly, yoke and vertical arm to complete.
    4 replies | 2649 view(s)
  • K.I.S.S.'s Avatar
    13th Nov '14, 19:28
    Hi Steve, When is America going to realise that Metric is just so much better than Imperial...? Anyway, there's a couple of things that require clarification before a properly useful answer can be attempted - firstly, what CAD software are you using? Many programs have simulation functions that allow you to define loads and constraints and assign material properties - which will then very simply do the job for you. You mention that it will be a ring that will exert the load on the walls of the hole - what diameter is the ring, and is it operated by a finger? There is a lot more to consider with this than if it was a circular pin - in this case, the load will not be uniform, and the force will not be linear if a human being is pulling back the ring. Obviously, the smaller diameter the ring, the greater the pressure that will be applied to the edges of the hole. This will cause the side walls of the hole to deform, and this is probably a far greater risk than...
    6 replies | 1195 view(s)
  •'s Avatar
    13th Nov '14, 17:38
    Hi friends Myself pruthvi raj I wanted to make my carrier in design, so please tell me which is the best software to learn either nx cad or catia Please help
    1 replies | 926 view(s)
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