Still trying to refurbish the Boxford AUD.
The Cross slide has several thou of movement, mainly in the middle of the travel.
The entire slide including the leadscrew can be pulled backwards and forwards and it seems to be play between the leadscrew thrust bearing and the saddle itself.
Is there any way to tighten this up?
Someone suggested that I adjusted the cross slide dial, but it seems immovable longitudinally on its shaft, though it can rotate to reset a zero.
On a second issue, the Cross slide dial has 250 divisions, corresponding I thought to 125 thou of movement per revolution, 250 thou change in diameter.
Putting a DTI seems to indicate only 100 thou, plus or minus the movement mentioned above.
Is it likely that the leadscrew had been changed or am I misunderstanding the nature of the beast?
Lastly, it has been fitted with a one HP single phase motor. The revs drop perceptibly under any load. Indeed I can all but stall it by applying 'squeeze' finger pressure to the main lead screw where it leaves the gear box and did stall it parting off a 20 mm delrin bar using a 1/16th parting tool. Using it on steel only removes dust rather than swarf or chips with any tool.
Is this normal? Everything seems to turn freely and with the belts removed light pressure turns the chuck. After 30 mins at the highest speed the intermediate pulley shaft is warm, but the headstock is still cool to the touch.
Any help gratefully accepted Robin