A tool used to determine the appropriate rate at which a tap should advance into a workpiece during a threading operation. It factors in parameters such as the material being tapped, the tap’s thread pitch, and the desired rotational speed to produce threads of the correct size and form. As an example, calculating the necessary advancement per revolution when threading aluminum with a specific tap requires inputting the thread pitch and the selected spindle speed into the formula or a dedicated calculation aid.
Proper feed rate selection is crucial for producing quality threads, extending tool life, and minimizing the risk of tap breakage. Historically, machinists relied on experience and handbooks for guidance, but modern calculation methods, including software and online utilities, allow for more precise determination. Adherence to correct feed rates results in efficient tapping operations and reduces material waste.
