Three-axis machine structure that prevents rotational movement

Details Three-axis machine structure that prevents rotational movement Three-axis machine structure that prevents rotational movement

1996-11-12

1999-02-02

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

248653, 248654, 414917, 901 22, 901 23, B25J 1100

Patent

active

058650636

ABSTRACT:
A three-axis machine control structure includes a support structure and a machine component to which a workpiece or tool can be attached. Three control arms are connected between the machine component and the support structure. Preferably, each control arm is pivotably connected to the support structure and to the machine component and includes a pair of four-bar linkages connected in series. The control arms are oriented to permit rapid movement of the machine component along any or all of the three linear axes, while restricting movement of the machine component along the rotational axes.

REFERENCES:
patent: 4762459 (1988-08-01), Morita et al.
patent: 4806068 (1989-02-01), Kohli et al.
patent: 5028180 (1991-07-01), Sheldon et al.
patent: 5388935 (1995-02-01), Sheldon
Jean-Pierre Merlet, published on the Internet at http://www.inria. fr/prisme/personnel/merlet/merlet eng. html, .sctn. Parallel manipulators, drawing and references for Manipulateurs a 3 degres de liberte.

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