flank angle

flank angle

[′flaŋk ‚aŋ·gəl]
(design engineering)
The angle made by the flank of a screw thread with a line perpendicular to the axis of the screw.
References in periodicals archive ?
Thread design includes a -20[degrees] reverse flank angle for greater load capacity.
Unified thread form--thread flank angle 60 degrees.
All saw blades had 72 square and trapezoidal-type teeth with a hook angle of 10[degrees], top clearance angle of 10[degrees], side rake and top flank angle of 0[degrees], side clearance angle of 4[degrees], and radial clearance angle of 1[degrees].
With the trepanning module, developed at blz and extensively tested at LLT, it is possible to achieve highly accurate circular bore holes with high aspect ratios and adjustable flank angle. Due to the novel setting with two 2-axis piezoelectric tilting mirrors and a self-developed real time controller by blz it is also possible to create complex bore-hole geometry.
To circumvent this trouble, Textron's Mag-Form screws use threads with a broad flank angle (105 degrees compared with 60 degrees for traditional screw threads) to increase compressive force and decrease shearing force during thread forming.
"Mag-Form fasteners have a broad, 105-degree thread flank angle with widely spaced threads.
Unified parallel thread form--thread flank angle 60 degrees.
Flank angle: Several methods may be employed, but the best are an optical comparator or a toolmaker's microscope.
Whitworth thread form thread flank angle 55 degrees BSPP threads are NOT INTERCHANGEABLE with NPTF and NPSM threads.
Failure to program this angle (again using the G76 code) will result in the threading tool producing an incorrect back flank angle.
If the tap is being pushed, the top flank angle of the thread form in the workpiece will be shaved.