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Tools / Re: Measuring backlash on rotary table
« Last post by philf on April 06, 2024, 03:50:49 PM »Dell,
To determine whether you could even consider backlash compensation I'd try the following:
Move the handwheel about a tenth of a turn. Check the backlash (using the divisions on the handwheel)and repeat until you've done a full revolution. If you get variations in backlash then your worm is running eccentrically.
Next revolve the table a tenth of a turn (whole numbers of turns of the handwheel) and note the backlash. Repeat for one revolution of the table. If there's a big variation then your wheel is running eccentrically.
You may find that at some point there's zero backlash and in that case there's no way of adjusting any of it out - without machining!
As has already been said you probably needn't worry about the backlash compensation but, if there are inconsistent results from the above tests, you'd probably introduce more problems than you solve.
Phil.
To determine whether you could even consider backlash compensation I'd try the following:
Move the handwheel about a tenth of a turn. Check the backlash (using the divisions on the handwheel)and repeat until you've done a full revolution. If you get variations in backlash then your worm is running eccentrically.
Next revolve the table a tenth of a turn (whole numbers of turns of the handwheel) and note the backlash. Repeat for one revolution of the table. If there's a big variation then your wheel is running eccentrically.
You may find that at some point there's zero backlash and in that case there's no way of adjusting any of it out - without machining!
As has already been said you probably needn't worry about the backlash compensation but, if there are inconsistent results from the above tests, you'd probably introduce more problems than you solve.
Phil.