It is just an extra feature. I never use them myself and don't see a reason to.
It's hard to explain...but I've used them when I have a User Frame setup for a fixture, but still need to move in an off-angle way within that User Frame's area.
Best example I can think of...I was doing some cutting on a wall of a box. This box had a trapezoid like shape cut into it. I wanted to keep my tool in the orientation it was in (parallel with Z plane), but I wanted to move the tool at the angle of the trapezoid edge. So I setup a Jog Frame with just a W value of 13.5° or whatever it was...From that moment on I could keep my tool in the same orientation and then move it at the weird angle up and down.
Hopefully I explained that well enough to make sense!
In that situation I would just switch to tool, rotate 13.5 degrees and jog straight on.
In that situation I would just switch to tool, rotate 13.5 degrees and jog straight on.
In my example I did not want to rotate the tool at all. I wanted to keep the tool parallel and perpendicular with the surfaces around it. Idk if that clears that up or not, internet words are hard sometimes haha.
Yes, that makes sense and is probably the best explanation for use of a jog frame that I have heard. The only alternative would be to create a separate User Frame.
I have used them a few times.
#1 was everything in the cell parallel/perpendicular to each other, brilliant designer layed the robot out 45 degrees to everything in cell.
Set the Jogframe R to 45 and now you can jog linear to the cell. this I've seen a lot
#2 Robot was wall mounted on a rail 5ft in the air, z+ of robot was the direction of travel of the rail. Jogframe worked really good in that one
I've found the usefulness of Jog Frames to be very few and far between. I did have one recently, oddly enough.
I'm making router cuts in a vertically angled face of a plastic part (boat helm) - two adjoining faces are at basically the same vertical angle, but rotated slightly around world Z to be at just a hair different angles. (I would guess about 5º). When I had to make adjustments to a few of the cut points, I was in a UF that I created for the center face. Made a quick jog frame on each adjoining face to adjust the positions quick. I should never really need to use those two as user frames, and you only get 9 User Frames to mess with. This robot runs 5 different part families, with different faces and angles on them. So I wanted to conserve the User frames for the main programs.
