Patent · US Active

Rotary drive design

US8955417B2 · kind B2 · utility

18Cited by

8References

22Claims

0Family size

Assignee

SWG SCHRAUBENWERK GAISBACH GMBH · DE

Inventors

Guenter Stiebitz · Waldenburg, DE
Patrick Roll · Schwäbisch Hall, DE
Joachim Glattbach · Neuenstein, DE

Key dates

Filing date	Jun 3, 2011
Grant date	Feb 17, 2015
Priority date	—
Expiry date	Jun 3, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B23/003
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A design for a rotary drive both for a tool and for a workpiece to be rotationally driven is proposed. This rotary drive design contains a cylindrical basic shape which deviates from a circular cylindrical shape. The contour or the cross section through this basic shape has a plurality of rounded projections and rounded recesses arranged between said projections. The projections tangentially touch a circle having a maximum radius, while the recesses, for their part, tangentially touch a circle having a minimum radius. Deviating from this cylindrical basic shape, in the regions between the projections are configured conical surfaces, which are not instrumental in the transmission of torques, but take care of centering and alignment between the tool and the workpiece.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.