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The Height of Fundamental Triangle is the height of the thread when the profile is extended to a sharp vee form. It represents the theoretical maximum height of a perfect thread form.
The calculator uses the formula:
Where:
Explanation: The formula calculates the theoretical height of the fundamental triangle based on the difference between major and minor diameters, scaled by the constant factor 12/17.
Details: Accurate calculation of the fundamental triangle height is crucial for thread design, manufacturing, and quality control. It helps determine thread strength, engagement depth, and proper mating of threaded components.
Tips: Enter major and minor diameters in meters. Both values must be positive, and the major diameter must be greater than the minor diameter for valid calculation.
Q1: Why is the constant 12/17 used in the formula?
A: The 12/17 factor is derived from the geometry of the ISO metric thread standard, representing the relationship between thread height and pitch diameter differences.
Q2: What are typical values for Height of Fundamental Triangle?
A: Typical values range from a few millimeters to several centimeters, depending on thread size and application requirements.
Q3: How does this relate to thread pitch?
A: While related, the fundamental triangle height is specifically about the theoretical maximum height, whereas pitch refers to the distance between adjacent threads.
Q4: Are there limitations to this calculation?
A: This calculation provides the theoretical maximum height. Actual manufactured threads may have slightly different dimensions due to tolerances and manufacturing processes.
Q5: Can this be used for internal threads as well?
A: While the concept is similar, internal threads have different diameter definitions and may require separate calculations.