Hello All; I see that the worm drive that indexes this thing is not in the base, but in the part that tilts. The advertising pix hide that fairly well, but it is what it is.
This throws a large monkey wrench into my plans to belt drive the worm from a motor on the rear of the base as the shaft spacing would then change with an adjustment of the tilt. Any method of fixing the motor to it must then move the motor with the tilt. And it must clear the base as it tilts. That leaves the motor hanging out on the side the indexing plate is on. I think it also means a two belt system in order to gear the motor down for torque power if a smaller motor is used. However it is mounted, it should be mounted solidly enough to withstand the weight of this being placed on a tool laying on the mills table as it being positioned on the mills table, and assembled, likely 75kg of weight, without damaging the motor or bending its mounting bracket. Thats a tall order. I am very disappointed in the booklet that came with it, no mention of the BS-0 or BS-1 beyond page 4, but 10+ pages on the even bigger ones. How about putting the motot on the rear of the base as planned, so its out of the way, locating the center of rotation on the side of the head and building a shaft on that center with a 2 size pulley there, and another pulley & belt to the worm shaft, so the tilting of the head would not change the belt length of either timing belt? I don't intend to use the side indexing plates. but calibrate the scale for one full turn by my usual mounting of a home switch, and recording the step count for 100 turns of the chuck, dividing that by 100 and using it as the axis scale. I already have that code sitting idle in the hal file for that machine. Used it to determine the scale factors for the 2 speed spindle drive when the encoder A/B is on the motor, not the spindle. But the Z is still from the spindle. That would auto-comp for tilt simply by rehoming it after the tilt was locked down. I've bought a 3/8's eye lag screw if I can find the middle of a joist above the machine to install it in, but haven't yet found a suitable electric hoist with a hand held pendant control, it seems to add $300 to a $100 400 lb winch. Found some candidates but haven't pulled out the card yet. Comments? Better ideas? Skyhook suggestions to help me handle this puppy since its too heavy for me? I hope its not too heavy for the mill. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
