We typically use Ductile Iron 65-45-12 for spindle housings. This is a great material as it does not seem to get excited at a wide range of speeds (natural frequency). However, we have had a lot of requests for a much lighter solution for applications in robotics. There are other factors to...
Anyone know of a program that calculates radial load? It is important in order for me to figure bearing life and shaft bending moments (we’re a spindle manufacturer). In my research, I have found this calc to be quite involved (merchants circle). Using a calc within Kennametal’s website, it...
When calculating shear Stress from the output of the shaft, should I use the emergency stop torque or peak torque (max acceleration torque)? Hopefully, it would be correct if I were to use peak torque in my calculation. That way I wouldn’t have to increase the size of our spindle, which is...
Hello, haven’t used FEA in quite some time.
Not sure how to interpret the results. I found in my hand calc, the max stress the broached shaft will see is 2830 psi. And the max/yield to be 4026 psi. Which matches the Von Mises result. The analysis is for torsion in the cross section of the...
Wondering what the torque would be in a 2.5” dia. Spindle. Spindle speed=9,000 rpm. Spindle is driven by the motor, pulley ratio is 2.57:1. Shaft weighs 66 lbs.
Motor torque = 40.2 lb-ft
Motor hp = 15 hp
Motor speed = 3500 rpm
Motor shaft/rotor inertia = 0.474 LB-FT^2
I calculated the max...
I believe I have the reactions right… for the motor and belt pull portion. What I can’t wrap my head around is the moments caused by the tooling. My colleague and I have been debating… he thinks there is an axial load of 707 N and radial load of 707 N because of the angle of the tool. The tool...
Trying to figure this out from the NSK super precision catalog. Some values that I’ve been given by a colleague:
100 lb thrust
25 lb axial load, 4” from bearing set (15 degree angular contact…bearing 7011C) the bearing set is in DB
5000 RPM...
I am looking to dimension to the start point of the holes to each other from the face of the radius via a drawing. I can get it close, but, it's not good enough because it's a gauge.
Thanks...
This callout is for assy/shipping purposes. Before this was called out as a 1/8" tack weld. We had a customer complaint due to the welds failing/parts seperating. Just want to make sure it is correct.
Am I able to remove the Feature Control Frame from the Datum C hole? Or can I remove Datum C altogether and have the Feature Control Frame to Datums A and B only (left side view)? If so, can I add bonus tolerancing from Datum B to the Ø.573/553 holes?
Currently, this is called out as a Spot weld. I don't think this is correct. This is basically a tack weld. I want to use symbology and not call it out as "4X Tack Weld." It is used to hold the parts together for shipping/assembly purposes.
Thanks,
Alan
I am trying to figure out how to sweep on a radius. The path does not take up the whole circle (which is where the path is derived from, after making an offset of 0.000). This was never a problem for me on AutoDesk Inventor. I am able to do it but goes in a straight line and does not seem to...
I am trying to Link Overall lengths, Widths, and heights to one column (just to show size of part). I'm sure this is simple, just looking for the right buttons.
Example:
DIMENSIONS
-------------------
2.00 x 3.00 x 1.00
The customer's print calls out 250 ft-lbs of torque mininum on a weld. This part is cylindrical via a progressive die. And this part is welded to complete the cylinder. A round bar (1 foot long, close enough) is inserted into the inside diameter of the part.... on the other end of the bar...
