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