Threading
From DDL Wiki
Threading
1. Definition- What is a thread?:
A thread is a variation on the idea of using an inclined plane to move an object. A thread can be used to convert torque into linear force.
Shown here is an image of a nut with internal threads and threaded rod with external threads.
Threads come in many types and forums some common types include
-American National and Unified Screw Thread (UN and UNF)
-American Nation Standard Metric Scree Threads M Profile
-Acme Screw Threads
-Buttress Threads
-Tapered pipe Thread
Each of these threads serves a different purpose and is optimized for a specific task.
2. Thread Making: Threads can be put onto a surface in a variety of ways. Some of these methods involve the removal of material while others relay of the reshaping of material.
Some common methods include
-Cutting using a tap or die
-Cutting using a single point tool such as on a lathe or CNC mill
-Tread grinding can be used to generate threads with very high tolerances
-Thread rolling creates a thread by plastically deforming the material into the shape of a thread
-Thread casting can be used to generated threads that do not require high tolerances.
3. References:
http://en.wikipedia.org/wiki/Screw_thread