Hardinge HLV-H treaded spindle nose
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  1. #1
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    Default Hardinge HLV-H treaded spindle nose

    Title says it
    I am looking for a drawing of the threaded spindle nose of a Hardinge Kl-1 which is identical to a HLV-H
    Or a place where I can purchase one

    Peter

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    I have never seen a drawing of the 2-3/16-10 RH threaded spindle. I have a Hardinge HV4N indexer with the same spindle end and can take simple measurements for you if you provide a sketch and indicate the dimensions you want.

    Some of the major chuck companies make chuck mounts for that spindle, so they must have drawings. Hardinge might help you if you ask.

    Larry

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    I have a lathe with such a spindle
    What I was curious about were tolences Especialy for the cilindrical part and the threaded part

    Peter

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    I don't know if this will help but: http://aafradio.org/garajmahal/HV-4N.pdf brings up a brochure on the Hardinge 5C indexing fixtures. Shown therein is a dimensioned drawing for a "fixture" to screw on the spindle nose of the threaded version.

    David

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    Thanks David That might help some

    Peter

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    While not specific to your Hardinge, the tolerance given by Boley for the register on their threaded lathe spindles is ISO h5, which would seem a good reference point. The document linked by old_Dave lists the Hardinge register as 2.186 (56,6mm), so you end up with an h5 tolerance field of (-0/-13µm). In imperial that would be 2.186" (+0/- 0.0051").

    Machinist meaning of "Register" ? - Page 7
    http://www.tribology-abc.com/calculators/iso_shafts.htm

    h5 is a very precise tolerance, so if you are making matching parts like chuck backing plates, you are probably aiming for a locating fit without interference, which can still be removed by hand, so the mating fit is probably H6, which would be +0/+19µm ( +0/+0,0075").

    Mark

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    The machine came with a back plate for a drive dog
    It has has a very sloppy fit More as 0.05 at least
    The spindle nose measured 2.3/16 " which is 55.56 mm
    So that gives it a sloppy 0.04mm fit according the linked to PDF
    I plan to hold tichter tolerances Perhaps +0.005 +0.015

    Peter

  8. #8
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    Oke
    I had a backplate made Tolerances a bit tighter
    But it did not turn on completly About 5mm left to go
    Finaly we found out the nose is tapered for about 0,05mm

    Peter


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