Why Three wire method is used ?
The accurate measurement of thread pitch diameter, which may be perfect as to form and lead, presents certain difficulties which result in some uncertainty as to its true value. The adoption of a standard uniform practice in making such measurements is, therefore, desirable in order to reduce such uncertainty of measurement to a minimum. The “three – wire method” of measuring thread pitch diameter, has been found to be the most generally satisfactory method when properly carried out, and is recommended for universal use in the direct measurement of thread plug and thread setting plug gauges.
How to Calculate Diameter of measuring wires ACME threads?
Diameter of measuring wires ACME threads calculator uses Wire Diameter ACME Thread = (Micrometer Reading ACME Thread-Pitch Diameter in ACME Thread+1.933357*Screw Pitch ACME Thread)/4.9939 to calculate the Wire Diameter ACME Thread, Diameter of measuring wires ACME threads formula is defined as diameter of wire used for measuring pitch of screw. Wire Diameter ACME Thread is denoted by Gacme symbol.
How to calculate Diameter of measuring wires ACME threads using this online calculator? To use this online calculator for Diameter of measuring wires ACME threads, enter Micrometer Reading ACME Thread (Macme), Pitch Diameter in ACME Thread (Dacme) & Screw Pitch ACME Thread (Pacme) and hit the calculate button. Here is how the Diameter of measuring wires ACME threads calculation can be explained with given input values -> 1398.387 = (0.00819-0.0072+1.933357*0.0031)/4.9939.