ok ... now about ssv
... somehow it replaces a tailstock, more exactly it replaces a folowing tailstock
... i said "somehow" because it will fail where a folowing tailstock will work, thus i might say that it replaces a " folowing tailstock " not 100%, but 20%; maybe i exagerated with the 20%, but real numbers are more close to 20% than to 100%
... also "folowing tailstock" is not a common cnc option / accessory, thus "ssv" is there to cover 20% of this missing option / accessory
... if a "folowing tailstock" would be there, than you would setup it and go, in no time
... "ssv" requires trials, and is a bit of lotery :
...... what is the amplitude? how much ± on the rpm ?
...... what is the timing ?
...... but i don't wanna hit big amplitude and low timing, because i will compromise the S engine
is this part payed well ? does it cover the accelerated spindle wear ?
...... about parts :
............ if a lot, thus mass production, than maybe you will be covered and you may be comfortable with the spindle wear
............ if uniques, single parts, than maybe you can ignore this cost, and just deliver that part
so, "ssv" means "folowing tailtstock" *20% * lotery chances
on the other side :
... if this is a rough operation, than, if constant rpm fails, "ssv" may save the day
... if this is a finish operation, than "ssv" will deliver better surface finish, but not as good as a grinder; again, a grinder is faster to setup and stable, while "ssv" is .... it just is
thus, when "cilindricity" is required, "ssv" has a big chance to fail
so, "ssv" work very well :
... requires setup time
... comes with S axis motor accelerated wear on "big amplitude + low timing"
... comes with less S axis motor accelerated wear on "low amplitude + big timing", and in this case, if there is no "ssv" i think you may just change the rpm / G97
... more for roughing
it can not win against a "folowing taistock" or a "grinder", and cases that it covers are particular ; it may work, or it may not work, and when it does, it does not eliminate vibrations, but it reduces