Description

Screwcutting in the Lathe for Home Machinists is a complete reference handbook detailing the uses of a lathe for all forms of screwcutting in all thread forms, pitches, and diameters.

Working in both imperial and metric standards, this comprehensive and invaluable resource will inform you on everything you need to know about screw-cutting with a lathe, from fundamental principles to gearing systems, single point lathe threading tools, and so much more. Also included are calculations, gear trains, conversions, and other helpful reference tables.

The wide variety of subjects covered include:

    Principles of Lathe Screwcutting
    Altering the pitch
    Simple and compound gear trains
    Self-act feeds from leadscrews
    Diametral pitch worms
    The DP formula
    Gearing an English Leadscrew for Metric Threads
    50-127 translation ratio explained
    Reduced pitch translators
    The 2-21 (63-160) method
    Worms sized by module
    Lathes with Metric Leadscrews
    Screwcutting calculations
    Disadvantages of 127-50 step up
    English gear trains
    Quick checking for nominal pitch
    Problems and Analysis of Repeat Pick-Up
    Action of English indicator
    Geared leadscrew indicators
    Pick-up when gearing is approximate
    Pick-up with dog-clutch control
    Multiple-Start Threads
    Automatic start indexing
    Feasibility test
    Automatic start indexing possibilities
    Special leadscrew design formula
    Single Point Lathe Threading Tools
    High speed steel
    Tungsten carbide
    Cutting angles
    Inserted bit tools
    Thread tool sharpening and grinding
    Practical Aspects of Lathe Screwcutting
    Four ways of depthing a screw thread
    Square thread cutting
    Acme thread cutting
    Special tap making
    Thread crest radii
    Screwcutting speeds
    Practical Thread Sizing Measurement
    Definitions of screw thread terms
    The 3-wire method of thread checking
    One-wire checking
    Pitch diameter calculations
    Helix angle of screw threads
    Gauging nut threads
    And much more!

Author Martin Cleeve was a well-respected contributor to Model Engineer magazine for more than 30 years. A known perfectionist to high-quality and accurate work, he designed and described many original lathe accessories, which have been made and regularly used in hundreds of amateur and professional workshops.

Book Details

    Language: English
    Published: 2021
    ISBN: 1497101735
    Format: True EPUB