I have a 88.9 mm OD X 13.84 kg/m Pup Joint (3 1/2 X 9.20#), 3.0 m long, EUE Pin X Pin. The intent is to convert this to a Perforated Pup Joint by drilling 19.0 mm holes through the wall. I need 2.0 m of holes, 14 holes/meter. The hole pattern is a helical wrap, each hole is 60 degrees apart...
I have seen and automated Compression/Extension Springs using SolidWorks, but never a Torsion Spring other than sweeping a circular profile around some advanced compound curve.
How can I automate this? Does anyone have a reference or tutorial on how to mate this with, say, a spring return door...
I have a Mandrel with a left hand screw at the top end, and a right hand screw at the bottom end. As the Mandrel is spun to the right, the screws advance a set of Cones. Imagine your two fists coming together as the Mandrel is rotated to the right, and separating with left hand rotation. In...
I have a Clapper which is held by a 5/32 inch axial to a Seat, a check valve arrangement. The Clapper weights 4 1/2 lbf, the centre of mass is 3 1/16 inches from the centre line of the axial. I need the Clapper to be spring return, 95 degree rotation counter clockwise.
Using a torsion spring...
I am drawing a 4 1/2 IF Pin and would like to show the vanishing threads. To do this, I would like to joint two helix, the first is simply the tapered path (taper=2in/ft) up to the cylinder diameter (14 thds at 0.25 in pitch). The second helix is simply a spiral which is also tapered, but at a...
I have been successful with this forum in the past to dynamic load a Compression Spring and automate height based on a moving part.
I would like to do the same with a Torsion Spring. How can I show a straight arm rotating 90 degrees from the relaxed position? Is there a site or perhaps a lead...
I have the following statements in a MathCAD 14 program:
X=1
Y=2000
XPRIME <== (X + 13) if X < 3
YPRIME <== (Y - 1) if X < 3
I find that the "if" statements are not executing, running the following debug lines generates "variable undefined" error, returned in red text.
Adding the two lines...
I'm trying to get a very simple example started used the Kepler Equation, E = M + e sin E, which is an iterative solution set given M and e as constants.
So I guess E and compute the right hand side, thus generating E' on the left. This would then feed into E on the right and I would recompute...
Suppose an inclined thread for use in an oilfield tubing application is torqued to 20 ft kip, right hand. I need to get off of this connection at a maximum of one-third that value, left hand. Obviously it is not possible using a simple box & pin connection. Is there another way to do this...
Has anyone visited or seen a website/forum which discusses the equations regarding forces for stabbing, withdrawl and stresses associated with Circular Collets?
I would hate to re-invent the wheel if there are already "canned programs" available. Many thanks!
Kenneth J Hueston, PEng
Principal...
I am interested in sourcing the proper formulae regarding the shear or thread strengths for inclined thread forms, NPT, EUE, NUE, VAM, etc. How much tensile load can a particular threaded connection handle?
To date I have been "rectifying" an inclined thread using an equivalent...
