16mm Filmography
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CUTTING AN EXTERNAL ACME THREAD

Produced by US Office of education. Description of the acme thread, giving its shape and emphasizing that the broad surfaces on the thread provide for the transmission of power and motion with the least amount of friction. "The operator is shown studying a drawing and a table showing the dimensions of acme threads are used by him to get the dimensions of the thread he is to cut." "The method used when setting the cross-feed index for the roughing cut is clearly shown as is also the manner in which the operator sets the stocking tool to the work and checks this setting after a preliminary cut has been taken." A magnified closeup gives the viewer a stocking tool, an instrument that is used to discuss its shape and the necessity for using such a tool. The various steps followed when taking the roughing cut are described in detail from the beginning of the cut to the finish.
Complete catalog record
Instructional lathe film explaining acme thread form and step-by-step cutting: dimension lookup, crossfeed indexing, stocking tool, finishing tool/setting gage, threading dial use, gauging and correcting oversize.

More in Machine Shop Work Series - Operations on the Engine Lathe

  1. USING A BORING BAR BETWEEN CENTERS
  2. Cutting A Taper With The Compound Rest And With A Taper Attachment. 1941
  3. Cutting An External National Fine Thread. 1941
  4. Drilling, Boring, And Reaming Work Held In Chuck. 1941
  5. Rough Turning Between Centers 1941
  6. Cutting an External Acme Thread 1942
  7. Turning A Taper With The Tailstock Set Over 1942
  8. Cutting An Internal Acme Thread 1943
  9. Cutting An Internal Taper Pipe Thread 1943
  10. Turning Work Held On A Mandrel 1943
  11. Using A Follower Rest 1943
  12. Using A Steady Rest 1943
  13. Machining Work Held in Chuck: Use of Reference Surfaces 1944
  14. TURNING ON A FIXTURE 1944
  15. Turning Work Held On A Fixture 1944
  16. TURNING WORK HELD ON A FIXTURE 1944
  17. USING A BORING BAR BETWEEN CENTERS 1944
  18. Using A Boring Bar Between Centers - Work Held On Carriage 1944
  19. Using A Steady Rest When Boring 1944
  20. Turning Work On Two Diameters 1979

Related films

Sources

  1. University of Georgia Brown Media Archives · record ↗ — title, year, format, description
  2. 16mm Filmography editors — creator, length, color, sound, description, catalog record

Record added 2026-07-07 22:36:21