Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1991-05-17
1992-09-15
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
901 1, 901 27, 901 28, G05B 1910
Patent
active
051480913
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an improvement in arrangements by means of which the tool-carrying end or free-end of a robot beam can be brought to a selected one of a plurality of predetermined positions. The invention can be applied with robot beams which comprise a single elongated element or a plurality of mutually telescopic beam-sections. The arrangement includes two beam-holding devices which are intended to support the beam or beam-structure pivotally at given spaced locations along its length, and is intended to cooperate with a workpiece-support table-assembly constructed for this purpose in accordance with the invention, said table assembly being coordinated for movement with the tool carried at one end of the robot beam.
BACKGROUND PRIOR ART
There are known to the art various kinds of arrangements by means of which the tool-carrying end of a robot beam can be moved to a given one of a plurality of predetermined positions and which can be used with robot beams which comprise at least two telescopic sections or one single beam-element. In the case of these known beam-steering arrangements, the robot beam, or a given beam-section, is held by a first holding device which is pivotally and displaceably mounted, so as to enable the tool-carrying end of the robot beam to be moved to specific, pre-determined positions.
The free-end of the robot beam has mounted thereon means for accommodating workpiece definning, deburring, drilling or milling tools, or alternatively abrasive discs or wheels for grinding cast-metal workpieces.
Also known to the art are table assemblies which comprise a top table-part having an upper table surface on which a workpiece can be firmly mounted, and a lower table-part which is pivotally journalled to a stand which rests on an underlying foundation surface, such as a floor.
Such table assemblies are intended to coact with an arrangement for adjusting the free-end of a robot beam to a pre-determined position, wherewith activation of the robot beam and the table assembly is coordinated in a manner such as to enable the workpiece to be worked in the manner desired.
It is also known to provide table assemblies of this kind with means whereby the assembly can be controlled and will be stable.
Also forming part of the known prior art are coordinate tables or platens which have an upper table surface on which a workpiece can be mounted and which can be displaced along two mutually perpendicular coordinates.
SUMMARY OF THE PRESENT INVENTION
TECHNICAL PROBLEMS
When considering the present state of the art, as described in the aforegoing, it will be seen that primarily a technical problem resides in the provision of an arrangement by means of which the tool-carrying end of a robot beam can be moved to a predetermined position among a plurality of available predetermined positions and to realize those advantages which are afforded with respect to simplified steering and precise positioning of the tool-carrying or free-end of the robot beam when the beam, or in the case of a beam comprising two or more telescopically arranged beam sections, one of said beam sections is held by two holding devices which are mutually spaced apart and at least one of which is intended to coact with a beam-positioning arm which is pivotally mounted at one end thereof, while enabling the at least one holding device to be moved up and down along said arm and therewith make commensurete adjustments to the attitude of the beam or beam structure.
Another technical problem is one of realizing the combination effects that can be afforded, and to which the particular attachment of the robot beam in the holding devices relates, when both arms are arranged for sliding movement along a respective arms which are pivotally journalled at one end thereof, and by causing the arms to coact with a stand which can be moved along a path through distances contingent on the measurement of work to be carried out on a workpiece.
It will also be seen that a further technical problem is one of enabling the
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Martin David
Shoop Jr. William M.
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