after some deliberation, it dawned on me that the value for PITCH is the blank O.D. x Pi for a 45deg tooth. (1 to 1 ratio)... unless I'm missing something.
I know this is easier than what I'm making it....
When constructing a Spiral and the starting position is known, what is the PITCH value you'd enter to get
a common 45deg tooth gear such as for a matched set of right-angle gears.
Tried 8, which doesnt look too bad, but I know it's gotta be...
a suggestion to improve the design would be to have a roller at the pin, rather than a fixed pin, especially with plastic as the base material for the cam. (It almost looks like an obround at the end of the bar..)
maybe I'm missing something, but can't the lower angled surface of the Dog be mated to one Cone's tapered surface ?
Because the left and right Cones already move correctly, there is no need to use both conical surfaces. quote:"So the Cones are mated to the Mandrel using "screw" mechanics."...
as a sidenote...
this very mechanism was used in some early washing machines
The main shaft being the agitator in the tub (can't say for sure if there was more than 180deg rotation in the one I tore apart as a kid)
The long link (shown as the actuator in your example) was an arm attached to a...
keyways don't have to be "standard" depth; they can be much shallower and still provide the needed torque resistance, as the key is in direct shear.
A method I used one time to affix a chain sprocket that had a tapered hug to a hardened shaft that had an involute gear already on it, was to...
First ay pic....got left off initial post
(btw, how does one get more than a single pic in a post?)http://files.engineering.com/getfile.aspx?folder=417adf25-9b06-446b-9683-20692a079173&file=Pipe_In_Plate_Ay_Mates_1.JPG
(used 2006)
Try this; put a cylindrical hole in a Plate.
Make a Sphere with OD that matches the hole diameter of plate. Insert an Axis using Front and Right Planes.
Extrude-cut a hole through the sphere that will be some dimension larger than the pipe. (Your "free movement"
Make a Pipe, and...
Here's some info that may be what you're looking for....
http://en.wikipedia.org/wiki/Epicyclic_gearing
Note this paragraph under Compund planets;
> During World War II, a special variation of epicyclic gearing was developed for portable radar gear, where a very high reduction ratio in a...
Have done a lot of reading on the 'net trying to find a definitive answer for calculating the Pull Out Force of a screw in Aluminum.
Here are the knowns
5/16-18 SHCS Class 2 Gr 8
6061 Aluminum plate 3/4" thick (40ksi ?)
Length of engagement = 5/8"
On another site (engineersedge.com) there...
I've used "close" within 0.010 mates when laying out (for instance) a fixed-centerline belt/pulley arrangement at some angle to an axis as compared to x-y decimal coordinates of the shaft centerlines for the pulley locations themselves.
It works fine and allows for metric/English units if need...
Checked the Snap To options and Grid wasn't checked on.
Checked the Major Grid spacing, then took out the Minor spacings...still no change.
Shut off all Snap-To options, and the HW still Fixes the first point.
Seem like it was something that was not so intuitive....and I really can't recall...
SW2006 & SW2010 on different computers...
It seems the HoleWizard wants to place the first hole and make it Fixed...the question is "why?"
I know I've run across this before and was able to change something to stop it from doing that, but I can't seem to find where the heck the mode is changed.
In either the Model or the Drawing, the angular dimension could be any one of 3 types, depending on how the dimension is dragged into position. Pick one line, then the other, then drag the dimension to control the type.
1) Acute (less than 90)
2) Obtuse (between 90 and 180)
3) Reflex (between...
"The purpose has something to do with them loading the bars into a screw machine. The 30 degrees would probably have a fairly liberal tolerance; +/- 5 degrees or so"
If the screw machine only needs this feature for loading the bars, why not make a chamfered & hardened lead-in bushing on the...
All the info needed is in Machinery's Handbook.
I've got some sprockets designed (SW06) for #25 & #41 chain of various tooth numbers.
It's not difficult to do, but takes a bit of time.
I have some tables made up in Excel to make calculating values easier, however these are not used as a...
