FIELD: mechanical engineering.
SUBSTANCE: invention relates to design of heads of fasteners and it can used at assembling of threaded joints. Proposed threaded fastener with shaped head has head with hollow shaped seat with inner engagement elements in form of alternating curvilinear projections and cavities. Hollow shaped seat of head is provided at inlet with combination entry part consisting of cylindrical belt and conical face after cylindrical belt made at angle of β=120÷150°. Sections of side surface of projections and cavities have conical and cylindrical sections. Conical section has angle α=1.5÷3°.
EFFECT: increased torque transmitted by tool, improved accuracy of alignment and setting of tool in head of fastener.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
RU2170860C1 |
