I too am running Draftsight free version after 31-Dec-2019 by editing a couple keys in the registry and defeating the registration reminder.
To get rid of the activation message just open Regedit.exe and navigate to: “HKEY_CURRENT_USER\Software\SWActivation\K2”
Delete any sub key and value...
Good point tbuelna & EdStainless, but I think the surfaces must be coated & dried prior to heating the gear & chilling the shaft. It's like a suspension of colloidal silica in a water carrier, the water would boil on the hot side and freeze on the cold side. So it can't possibly be used as an...
I'm having a hard time finding information anywhere in the literature. Co-workers are drawing a blank as well.
The issue we have, on an existing assembly, is a relatively heavy shrink fit between a gear and an intermediate shaft (width 2.00"; ID of gear Ø3.1880/3.1890, 63 microinch finish; OD of...
Hi, yes that would be bad. But seriously it is just a collector manifold that dumps into the supply tank, forgive me if I wasn't clear enough, the supply tank is at ambient pressure conditions.
If I was to make a guess what the collector manifold is pressurized up to, it might be as high as 10...
Good afternoon everyone,
There is a welded manifold fabricated from 1.5" square ERW tubing and half couplings, it is a collector of a number of case drain lines from some hydraulic pumps. The hoses come together to the manifold because there is a temperature gauge on each line for monitoring...
You know, thinking about it overnight, is it possible to incorporate something like a one-way clutch? You are driving a load that overruns its drive 4 times per rotation. Perhaps that's a good thing -- just let it overrun by the clutch slipping. That way you avoid having to do something like...
Check out Ikona Gear, they have a patented non-involute gear design that features zero backlash. Here's a technology page with a little movie that shows how it works:
http://www.ikona.ca/technologies.shtml
Smart!
Interesting, but.... does that AGMA course only deal with failure analysis, or does it have any content dealing with worn yet working gears?
I'm more interested in determining if a gear set is worn out and should be replaced, before it breaks. For example, how to determine an observation...
Please see attached picture. I tried to find the symbolic solution for this trig integral, it gave me a funny solution with all complex terms (L, x and b are distance measurements, P0 is a pressure term). It finds a numeric solution just fine, but I can't get a decent symbolic solution.
Any...
I'm not sure what you mean by "fastener schematic", maybe you mean to create an exploded view including fasteners?
I like Solidworks, but I also use Corel Draw for things like this. I put everything into PDF files since everyone here can use Acrobat.
Some people may like Visio...
Hello,
What effect does "edge distance" have on lag screw withdrawal resistance in wood? I need a source as well, just let me know your source and I'll look it up!
I found in "Standard Handbook of Fastening and Joining" a chart that was reproduced from AF&PA source, wherein...
Wait a minute.. just exactly what is the failure mode here. Is it stripping when you remove and re-tension the bolts after about 1,300 times, or are the bolts falling out during sawing, or what?
If you don't have bolts falling out when sawing then your thread lock solution, whatever it is, is...
I too think this is probably a fatigue problem. With galling surface metal plugs up the thread form and the screw eventually just freezes in the tapped hole. If you lubricate the fasteners you can virtually eliminate that problem. If the problem is stripping as you say, then I do not think...
Hiya, yeah it has been a long time since I posted that first request (more than 4 years)! Believe it or not, my internet account was not able to connect to eng-tips.com for a long long time, although a notice of each of your replies was e-mailed to me.
I got interested in spiralocks because I...
OK.. actually those are all equally scientific suggestions ;)
The pen/pencil idea is good, but I need resolution to accuracy of 0.010" (I didn't say that before). I'm also worried about the pen bouncing and leaving the paper surface. Awesome solution though!
The strain gauge method also...
Can anybody help, I need to measure the maximum deflection of a large flat panel under an impact. There's nothing really extreme about the situation, it's a mass of 9 lbs impacting at about 50 fps (34 mph or so) and total deflection is on the order of about 3".
Assuming the deceleration...
I need a good structural design reference that specifically addresses anchorage, can anyone recommend one?
My problem is to design an anchorage system to affix window shutters to withstand hurricane forces in Dade County, Florida. Applications will be elevated (dangerous!) and to every kind of...
