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close this bookManual Thread Cutting - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 22 p.)
View the document(introduction...)
View the document1. Purpose of thread cutting
View the document2. Kinds of threads
View the document3. Tools for internal threading (tapping)
View the document4. Tools for external threading
View the document5. Operation of thread cutting
View the document6. Special hints on the designation of threads by the example of the metric threads
View the document7. Technological process of cutting internal threads (tapping)
View the document8. Technological process of cutting external threads

2. Kinds of threads

Fastening screw threads:

metric threads (V-shaped threads)

Whitworth threads (V-shaped threads)

Power-transmission screw threads:

knuckle threads, acme threads, saw-tooth threads

Figure 2 - Kinds of threads

1 - Vee thread
2 - Knuckle thread
3 - Acme thread
4 - Saw-tooth thread

Sealing threads:

tapered threads (metric and Whitworth)

Pipe threads:

Whitworth pipe threads

By manual thread cutting, only fastening screw threads and partially pipe threads are made. These kinds of threads are made as left-hand or right-hand threads as well as coarse screw threads and fine screw threads..