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Type: Posts; User: gregormarwick

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  1. Replies
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    It's not a TG collet, the shape of the upper...

    It's not a TG collet, the shape of the upper taper / extraction groove is wrong.

    Doesn't look quite like a DIN 6388 (OZ / 450E) either

    My best guess is that it's a Big Kaiser NBC - New Baby...
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    My dad has, for some a reason, a really old Rank...

    My dad has, for some a reason, a really old Rank Taylor Hobson LVDT amplifier. I never knew what it was until quite recently when I bought a modern one myself. It never had any probes with it, so it...
  3. And, like you say yourself, 304 plate is the...

    And, like you say yourself, 304 plate is the worst of both worlds. Hardness, tensile, specific cutting force, work hardening all extremely inconsistent from one cubic inch to the next. Absolutely...
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    I was using an older version of NX (10.something...

    I was using an older version of NX (10.something I think), it would import SW parts as dumb solids. Not such a big deal tbh as the direct (synchronous) modelling tools in NX are so superior to those...
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    Yes, I have two 4k monitors and SW behaves...

    Yes, I have two 4k monitors and SW behaves normally on them without any HiDPI workarounds.

    It's slow about switching parts from the taskbar, it always was, but seems worse on 4k. You have to hover...
  6. I did not pay too much attention to the machine...

    I did not pay too much attention to the machine you're using when I wrote my first reply.

    Looks like all the UMC machines are plain 40 taper right? And presumably the whole spindle is a light...
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    I'm not familiar with that book, and google...

    I'm not familiar with that book, and google returns a few possibilities. Can you provide a link?



    That will be a backup plan I suppose, I'd rather not unless I absolutely have to, this machine...
  8. The second photo is just some high power...

    The second photo is just some high power resisters dissipating a lot of heat and charring the board - probably not an issue but it wouldn't hurt to pull, measure, and resolder them.

    The last photo...
  9. So you're running soluble oil in the Hardinges? ...

    So you're running soluble oil in the Hardinges?

    I feel like that is important - just about every modern cut off is optimised for soluble oil in that the chip former relies on the extremely rapid...
  10. Sandvik make precision boring heads on long...

    Sandvik make precision boring heads on long devibe bars similar to their silent bars for boring on a lathe.

    I have a 45-55mm one that is about 400mm long and like all their silent tools it works...
  11. Interested also. I have a 600 and don't...

    Interested also.

    I have a 600 and don't believe it has a brake, but I've never had any trouble taking decent (not crazy heavy) cuts on it.

    It barely gets used once in a blue moon anymore as all...
  12. I did, and thought that it would. I have used...

    I did, and thought that it would. I have used small insert drills in less than ideal machines/conditions enough to have a good feel for what has a chance of working and what doesn't.

    I still don't...
  13. I wouldn't hold your breath - I see he posted...

    I wouldn't hold your breath - I see he posted that it's rated at 1KW, power at the already reduced cutting data I posted is something like 2.5KW.
  14. Possibly. The downfeed of your radial drill...

    Possibly.

    The downfeed of your radial drill would probably crush his machine without even noticing, and the torque might well tear it in two, but go and put an indicator on the end of a drill with...
  15. A radial arm drill? What else would you expect? ...

    A radial arm drill? What else would you expect?

    Insert drills are self centreing in that they follow their own track and won't wander once established in the cut, provided that the shank is...
  16. To be fair, the only control I've ever run that...

    To be fair, the only control I've ever run that will happily let you command a move past a limit switch is Fanuc.
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    Yea, the machine certainly is a joy to look at!...

    Yea, the machine certainly is a joy to look at! And for the most part a pleasure to use, although I do have some occasional disagreements with the Celos Fanuc control...

    Thanks all for the help.
  18. I'm going to go against the crowd and suggest...

    I'm going to go against the crowd and suggest that the drill head and machine can probably handle it, at least at the smaller sizes of hole.

    In particular I'm going to disagree with ChipSplitter...
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    Well, there is a hole in the part, I won't know...

    Well, there is a hole in the part, I won't know if it's wandered much until I machine the other end.

    I just copied CAMasochism's cutting data as it wasn't a huge departure from what I used...
  20. Plenty of discussion about this if you do a...

    Plenty of discussion about this if you do a search.

    Cliff notes though - if you are doing low quantity parts that require exceptional geometric precision from your vice, the wedge jaw modular...
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    Thanks for the replies, just to clarify, I have a...

    Thanks for the replies, just to clarify, I have a brand new drill. The one in the picture is from the last time with the shorter hole, it was also new before it did that. I was hoping for advice on...
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    Feeds and speeds for gundrilling

    I'm about to drill a 5mm hole 400mm deep in a piece of 4140QT @235Bn.

    I have a new gundrill here for the task.

    A couple of weeks ago I did a similar part in the same material, with the same...
  23. Our local outfit are usually within 10μm on type...

    Our local outfit are usually within 10μm on type 3, and are also pretty good at controlling final dimension vs machined dimension by (I guess) working the acid etch prior to plating. Unless I...
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    Yes for sure Impero holders are going to be very...

    Yes for sure Impero holders are going to be very difficult to find, and that is an extremely good reason to choose something else.

    My comment about choosing an Impero over an Aloris comes from my...
  25. Not just a simple case of the probe body not...

    Not just a simple case of the probe body not being properly clamped to the arbour?

    I know you said that the stylus is centred within a tenth which would rule that out, but it might be worth double...
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