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2 021 085

(13)

C1

(51)

IPC

(21) (22)

Application

4945409/08, 1991-06-17

(22)

Actual filing date

1991-06-17

(45)

Published

1994-10-15

(72)

Inventor

Saneev M.M.Saneeva R.M.

(73)

Holder

Aktsionernoe Obshchestvo

TAP FOR CUTTING PRECISE THREADS Russian patent published in 1994 - IPC

Abstract RU 2021085 C1

FIELD: mechanical engineering. SUBSTANCE: tap has chamfer l1, gauging part l2, pilot part l3 with barrel teeth, and flutes. Teeth of tap chamfer l1 are of right taper angle. Angle of inclination of flutes on champfer l1 and gauging part l2 is greater than angle of flute inclination on pilot part l3 of thap by 0°30′-1°. EFFECT: improved accuracy in thread cutting. 3 dwg

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RU 2 021 085 C1

Authors

Saneev M.M.

Saneeva R.M.

Dates

1994-10-15—Published

1991-06-17—Filed

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