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lead screw

[leed] /lid/
noun
1.
(on a lathe) a rotating horizontal screw for moving the tool carriage along the work at a constant rate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for lead-screw
Historical Examples
  • The dial, therefore, would enable the carriage to be engaged with the lead-screw at points equal to a travel of one-half inch.

    Turning and Boring Franklin D. Jones
  • The 24-tooth gear goes on the spindle stud and, the 40-tooth gear on the lead-screw.

    Turning and Boring Franklin D. Jones
  • If, on the other hand, no movement takes place, it is an indication that the pitch of the lead-screw is correct.

    Measuring Tools Unknown
  • As previously explained, lead-screw S is only used for feeding the carriage when cutting threads.

    Turning and Boring Franklin D. Jones
  • The carriage should not be disengaged from the lead-screw after starting the cut, the tool being returned by reversing the lathe.

    Turning and Boring Franklin D. Jones
  • Suppose that nine threads to the inch are to be cut and the lead-screw has six threads per inch.

    Turning and Boring Franklin D. Jones
  • This is not the case, however, when the number of threads being cut is not a multiple of the number on the lead-screw.

    Turning and Boring Franklin D. Jones
  • By referring to the last column, we find that the lead-screw gear should have 84 teeth.

    Turning and Boring Franklin D. Jones
British Dictionary definitions for lead-screw

lead screw

/liːd/
noun
1.
a threaded rod that drives the tool carriage in a lathe when screw cutting, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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5
6
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