Re: Smooth rods and diagonal rods length dimension -Rostock
I did the work to the scad model to make rod lengths and frame size parametric and set the full model up so that it could be animated with the head moving in a circle. I think johann pulled the...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
I will have to look at scad first (never used it) and see the rostock scad files. I´ve been wanting to try and use it, but i´ve been missing a little motivation..I´m more a man of nurbs and sufaces...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
Anything that helps me understand the math behind this amazing design, I'd love to read. I can't be of much help to you as I took the lazy way and am building a kit. ;-)
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Re: Smooth rods and diagonal rods length dimension -Rostock
Here is an animation I made from the model. The distance of the hinge from the smooth rods makes a difference to the achievable build area for a given strut length. The further from the rods the...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
I think i´m beginning to understand the principals. Having that gap between the hinge and the bearings optimizes the build space, but has the down side of the torsional loads you mentioned.To reduce...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
The radius of the flying carriage also factors into the horizontal reach. This is easiest to visualize when one set of rods is at the low extreme and are near horizontal. The flying carriage...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
@xclusive585, the math behind rostock is in the post I referenced above. If you have any questions about it, I'd be happy to explain.
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
So i ended up with this settings: // Center-to-center distance of the holes in the diagonal push rods. #define DELTA_DIAGONAL_ROD 222.0 // mm // Horizontal offset from middle of printer to smooth rod...
View ArticleRe: Reprapped delta robot.
That's interesting because its using arms like a 'traditional' delta assembly robot instead of a Rostock linear bearing style delta. Does appear to have some slop in the actuators/servos.
View ArticleHas anybody used Igus rod ends
I was looking for rod ends and came across the Igus ones - which I assumend would be megabucks, but m3 rod ends come out at about £1.73 each in 25 off quantities - much cheaper than metal ones and not...
View ArticleRe: Rostock - ReplicatorG Troubleshooting
Which firmware do you use ? In Marlin it was possible to switch off/adapt the Max/MinTemp check - however, I won't recommend this in production. Btw. you might also want to try the patched repg 5d...
View ArticleGravity On E-Stop?
Ok so this seems like a simple question but on delta bots that use belts to drive the arms when I hit E-Stop or reset the arduino what is stopping the print head from tumbling down and smooshing the...
View ArticleCommissioning problem.
Hi, I've had a good search but can't find my issue mentioned anywhere. I have almost finished building my first 3D printer based on a Rostock Delta. I have installed the Marlin modified firmware and...
View ArticleRe: Gravity On E-Stop?
Stepper motors don't turn freely, even without voltage applied. The usual ones have 200 rest positions (each step) per turn.
View ArticleRe: Gravity On E-Stop?
Well they do turn freely, they just require a bit of force to jump to the next detent. I imagine its a delicate game between the mass of the delta assembly and the strength of the motors as weaker...
View ArticleRe: Commissioning problem.
sounds like your motor-direction + homing direction is wrong.... there should be some sort of config entry for that (i am only "familar" with repetier so i do not know exactly where to find that in...
View Articlecalibrating problem
hello fellows, i have finished my rostock robot from mechanical side and trying for 3 days now to calibrate it. the problem i am facing is, that i can not find a accaptable way to get the z-"lift" and...
View ArticleRe: calibrating problem
one add: in the calibration guide in the link above it says: If the length of the object is wrong, adjust DELTA_DIAGONAL_ROD: new DELTA_DIAGONAL_ROD = 100 / measured_length * original...
View ArticleRe: Commissioning problem.
Hi seppineppi, thanks for your reply. I have been going around in circles for a week now without managing to find the solution. Everything I read tells me that the standard firmware with minor changes...
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