FIELD: metal working, namely, structures of screw taps for threading parts of refractory and titanium alloys. SUBSTANCE: screw tap includes inlet portion, sizing portion and stem. Sizing portion includes full-profile teeth and lowered-height teeth. Full-profile teeth are joined directly one with another and they are arranged behind inlet portion or behind group of lowered-height teeth before stem or at both sides of lowered- height teeth. EFFECT: increased useful life of screw tap, enhanced technological effectiveness of process of making tap. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SCREW TAP | 1998 |
|
RU2151673C1 |
| TAP BORER | 1996 |
|
RU2103121C1 |
| COMPOSITE THREADING DIE | 1992 |
|
RU2043883C1 |
| MACHINE TAP | 2014 |
|
RU2566094C1 |
| TAP | 0 |
|
SU1763113A1 |
| TAP | 0 |
|
SU1804379A3 |
| TAP | 1999 |
|
RU2229965C2 |
| TAP | 1992 |
|
RU2087271C1 |
| A SET OF TAPS FOR CUTTING THREAD IN METALS HARD TO MACHINE | 0 |
|
SU1085719A1 |
| TAP | 0 |
|
SU1703314A1 |
