| Gallery, Projects and General > How do I?? |
| chucks |
| << < (2/2) |
| crabsign69:
the others jaws are perfect they are out by 001 002. so these are not good and those jaws are clamped tight and just for shits and giggles i put the test bar i was using in the mill its perfect stays on 000 so those other jaws are whats bad now i need to know how to fix it with what i have on hand. |
| Rob.Wilson:
What do you have at hand ? :D Looks like you will have to grind them true ,,,,, Grind the outer two steps first with the chuck gripping your bar ,,, then when done remove the bar and fit a ring to one of the two outer steps ,, some thing like a bearing outer ,, so your grinding spindle can pass through the centre and grind the inner step . Cover your lathe ways Then you will have to strip the chuck and give it a good clean Rob |
| Bogstandard:
One word of warning about grinding chuck jaws. It will only be perfectly accurate in exactly the same position and loading forces it was ground in. Somewhere else on the scroll and under a different loading, it can be just as bad as before. If you are desperate for accurate outside jaws, buy yourself a set of soft jaws to fit your chuck and turn them to fit the job using the correct procedures. Bogs |
| crabsign69:
--- Quote from: bogstandard on November 09, 2010, 05:24:57 PM ---One word of warning about grinding chuck jaws. It will only be perfectly accurate in exactly the same position and loading forces it was ground in. Somewhere else on the scroll and under a different loading, it can be just as bad as before. If you are desperate for accurate outside jaws, buy yourself a set of soft jaws to fit your chuck and turn them to fit the job using the correct procedures. Bogs --- End quote --- hummm ill try and set the chuck at different loads and see if its the same. funny the other set of jaws is damed neer perfect . ill play with it some more i got a drimel tool just have to make a holder for it. i hardly use these jaws but i did not want to change them out cause i was goting to use them again for a round thingy im working on but needed to turn a .250 inch bar down a little thats when i found the runout thanks guys |
| Navigation |
| Message Index |
| Previous page |