Hi everyone,
In my small machine shop (Weiler Matador, Aciera F3, Deckel SO clone, large drill press with XY-table, MIG and TIG welding equipment), i build, modify and repair machinery and tooling for my company.
Recently i bought a used magnetic lathe chuck from a dutch brand (forgotten the name). This was fitted with a D1-d Camlock adapter plate, i think for a AI Hembrug lathe. Because this will not fit my lathe, i turned a new adapter plate to measure and fitted the chuck. The face of the adapter plate turned out perfectly flat, the shoulder was accurate to measure.
The problem was that the chuck had a lot of runout although i think it was mounted correctly to the plate. Also, unbalance occured which causes the lathe to vibrate above 500 RPM. The runout was on the outside perimeter of the chuck, not on the face. After taking the assembly apart, indicating the plate on all sides (nothing wrong), I concluded that the best way forward was probably to machine off the runout.
Now the chuck has no runout, not on the face nor the side. But the unbalance remains: on 800 RPM the whole lathe vibrates. Maybe, components inside the chuck cause the unbalance. Also a good chance is that I did something horribly wrong. But what?
In my small machine shop (Weiler Matador, Aciera F3, Deckel SO clone, large drill press with XY-table, MIG and TIG welding equipment), i build, modify and repair machinery and tooling for my company.
Recently i bought a used magnetic lathe chuck from a dutch brand (forgotten the name). This was fitted with a D1-d Camlock adapter plate, i think for a AI Hembrug lathe. Because this will not fit my lathe, i turned a new adapter plate to measure and fitted the chuck. The face of the adapter plate turned out perfectly flat, the shoulder was accurate to measure.
The problem was that the chuck had a lot of runout although i think it was mounted correctly to the plate. Also, unbalance occured which causes the lathe to vibrate above 500 RPM. The runout was on the outside perimeter of the chuck, not on the face. After taking the assembly apart, indicating the plate on all sides (nothing wrong), I concluded that the best way forward was probably to machine off the runout.
Now the chuck has no runout, not on the face nor the side. But the unbalance remains: on 800 RPM the whole lathe vibrates. Maybe, components inside the chuck cause the unbalance. Also a good chance is that I did something horribly wrong. But what?