Spark plug
Member
- Messages
- 4,062
- Location
- Durham, England
I have a few milling jobs to do over Christmas so I decided to do a bit of maintenance as the X axis was bending and had some backlash.
The binding was simple enough the adjusting screws for the taper gib strip had came loose and the gib tightened its self up.
So onto the backlash when I looked under the table I noticed the backlash adjuster had been disfigured at some point, it was snapped and looked like someone had tried to drill it. Next started to take the lead screw out first started removing the old power feed (witch dose not work anyway). The power feed should just slide off the lead screw but it was solid, on further inspection it seemed that the roll pin that the power feed uses to drive the lead screw must have snapped allowing the power feed to spin on the lead screwworm I split the power feed casting leavening the shaft and gears on the lead screw for the time being.
Now with the lead screw out I could lift the label off only to discover what looked like hammer rash on the load bearing slide under the table.
Now I could get at the nuts and see what was going on, when I tapped them out of there housing I found they where in pretty bad shape.
It all seems to point to the machine being crashed, smashing the power feed, snapping the roll pin that drives the lead screw and tearing the nut out of its housing. Then being badly repaired.
I don't think I will be lucky enough to get a new nut this side of Christmas so I need to decide weather to put it back together the way it is or wait till I get a nut.
The binding was simple enough the adjusting screws for the taper gib strip had came loose and the gib tightened its self up.
So onto the backlash when I looked under the table I noticed the backlash adjuster had been disfigured at some point, it was snapped and looked like someone had tried to drill it. Next started to take the lead screw out first started removing the old power feed (witch dose not work anyway). The power feed should just slide off the lead screw but it was solid, on further inspection it seemed that the roll pin that the power feed uses to drive the lead screw must have snapped allowing the power feed to spin on the lead screwworm I split the power feed casting leavening the shaft and gears on the lead screw for the time being.
Now with the lead screw out I could lift the label off only to discover what looked like hammer rash on the load bearing slide under the table.
Now I could get at the nuts and see what was going on, when I tapped them out of there housing I found they where in pretty bad shape.
It all seems to point to the machine being crashed, smashing the power feed, snapping the roll pin that drives the lead screw and tearing the nut out of its housing. Then being badly repaired.
I don't think I will be lucky enough to get a new nut this side of Christmas so I need to decide weather to put it back together the way it is or wait till I get a nut.
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