### Abstract

Double cranks containing a Chebyshev-dyad, are investigated for their employment as a straight-line mechanism. The three available design degrees of freedom, have been used for the optimization of the minimum transmission angle, for the minimization of the maximum deviation and for the length L of the straight-stretch in the coupler curve. The resulting double cranks show to have deviations that are about twice as small as those for which the coupler-point lies on the produced side of the coupier. For any maximum deviation, the length L of the straight-stretch also appears to be about 1,5 times as long as the one obtained when Ball's point lies at the base of the design. A graph showing the maximum deviation as a function of L, allows the designer to pick his choice mechanism. Also a table will be of help to find the accurate dimensions of the mechanism that belongs to a given deviation or a given length L of the straight part in the coupier curve.

Original language | English |
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Title of host publication | Leer der mechanismen : DET-colloquium, 18 februari 1987, Technische Universiteit Eindhoven |

Place of Publication | Eindhoven |

Publisher | Technische Universiteit Eindhoven |

Publication status | Published - 1980 |

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## Cite this

Dijksman, E. A. (1980). Verbeterde rechtgeleidingen met dubbelkrukmechanismen. In

*Leer der mechanismen : DET-colloquium, 18 februari 1987, Technische Universiteit Eindhoven*Technische Universiteit Eindhoven.