LowEnergyParticle
Cast Iron
- Joined
- Jul 26, 2004
- Location
- Beaumont, near Houston
I was doing a profile face cut on my HLV-H this evening. These put a good bit of pressure on the tool, and so I tend to take it pretty easy with them. I felt like the tool post was rocking back slightly under the pressure. Also, it had vibration in it that seemed like too much for the relatively easy cut I was making. The vibration stopped between the tool slide assembly and the cross slide: the cross slide did not vibrate much.
I checked the tool slide's ways, and they were correctly adjusted and lubed. I then squirted some way oil around the base of the tool post slide, and noticed that when I took another cut the slide assembly tilted back enough so that I could actually see the puddle of lube suck under the slide assembly slightly.
The problem definitely seems to be on the interface between the top of the cross slide, and the bottom of the tool post slide assembly. As you know, this is held together by the eccentric rod with the hex socket head. Something is not right, but I can't see what.
Removing the tool slide assembly off the mount is really difficult. The eccentric comes out easily enough, and the tool slide assembly can be raised up about 5/8" without problem, but it's very hard to get totally disengaged from the mounting rod (the one that's drilled for the eccentric).
Once the tool slide assembly is off the mounting rod, it becomes clear that the mounting rod has a lot of vertical play, and can be rocked back and forth without really finding a seat against the inside-top of the cross slide.
I've cleaned everything (really, it wasn't dirty & no chips in the way) and put it back together, and turned pretty hard on that eccentric. No luck, the performance is unchanged.
I've looked at the eccentric, and it is not bent at all or worn very much. It seats up nicely.
Can someone please help me with a suggestion as to what might be wrong?
Thanks very much!
Dave
I checked the tool slide's ways, and they were correctly adjusted and lubed. I then squirted some way oil around the base of the tool post slide, and noticed that when I took another cut the slide assembly tilted back enough so that I could actually see the puddle of lube suck under the slide assembly slightly.
The problem definitely seems to be on the interface between the top of the cross slide, and the bottom of the tool post slide assembly. As you know, this is held together by the eccentric rod with the hex socket head. Something is not right, but I can't see what.
Removing the tool slide assembly off the mount is really difficult. The eccentric comes out easily enough, and the tool slide assembly can be raised up about 5/8" without problem, but it's very hard to get totally disengaged from the mounting rod (the one that's drilled for the eccentric).
Once the tool slide assembly is off the mounting rod, it becomes clear that the mounting rod has a lot of vertical play, and can be rocked back and forth without really finding a seat against the inside-top of the cross slide.
I've cleaned everything (really, it wasn't dirty & no chips in the way) and put it back together, and turned pretty hard on that eccentric. No luck, the performance is unchanged.
I've looked at the eccentric, and it is not bent at all or worn very much. It seats up nicely.
Can someone please help me with a suggestion as to what might be wrong?
Thanks very much!
Dave