Quote:
Originally Posted by 2stroke
Was thinking of that but the worm is brass and the wheel some kinda of alloy mix. If i did the brass worm would be chewed out first before any real impact was made on the wheel i think. Though i guess i could just do a few revs of the wheel then take it off and polish it with the dremenal.
|
PE is the result of flex and slop in the machine and tools used to cut the thread and will therefore remain a feature of the worm no matter what you do short of machining off the original threads and re-cutting them on a blank surface. Materials and grains in the metal used to make the worms will also play a part in this. Lapping would not correct PE inherent in the worm but if done carefully should knock off some of the lumps and smoothen it somewhat. The rest could then be managed with auto guiding as you have no chance if there are large random spikes. You would not need to cut so deep as to force severe wear on the worm or wheel as this would worsen the problem with backlash. I imagine setting the clearances carefully whilst the worm and wheel are in place on the mount and using a drill at low speed with some very fine diamond grit for about 5 full rotations of the wheel would do all you could to improve the situation. Take the mount apart and give it a very good clean up then regrease all the bits and see what happens. You would of course need to have done a PE run with PEMPro or similar first so you could compare before and after.
Mark