FIELD: machine engineering.
SUBSTANCE: tap includes intake portion, and a leading portion of the gauge section, the gears of which are made barrel-shaped. The radii ρ of curvature the cutting edges of the intake section operate in the range of 25 to 30 microns, the rounding radii ρ the cutting edges of the sizing portion within the range of 15 to 20 microns, and the radii of the rounding ρ front and rear edges of the leading portion in the range of 30 to 40 microns.
EFFECT: increase in the durability of the tap and to improve the quality and accuracy of thread cutting.
5 dwg
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Authors
Dates
2017-04-18—Published
2015-12-09—Filed