Portal system
First Claim
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1. Portal systems for the multidimensional movement of a holder member in at least x-, y- and z directions to selectable positions within a working space, the portal system comprising:
- (a) a portal having a crossbeam extending in said x-direction with mounting means for mounting said crossbeam at a fixed location;
(b) a first unit movable along said crossbeam in said x-direction;
(c) means for moving said first unit in said x-direction;
(d) a second unit supported by said first unit for movement relative to said first unit in said z-direction; and
(e) means for moving said second unit in said z-direction;
wherein said second unit comprises;
(i) a first hollow housing part;
(ii) a shaft having an axis extending in said z-direction and having a first end and a second end, and being rotatably disposed within said first hollow housing part;
(iii) a second hollow housing part at said first end of said shaft and rotatable with said shaft about said axis;
(iv) an axle rotatably disposed in said second housing part and offset to the side of said axis, with said holder member being provided at an end of said axle;
(v) said holder member being extensible and retractable;
(vi) a first motor mounted at said first housing part and drivingly connectable to said second end of said shaft;
(vii) a second motor mounted at said first housing part for driving said axle; and
(viii) a transmission extending from said second motor through said first and second housing parts to said axle for rotation of said axle, whereby movement of said holder member in said y-direction is achieved by rotation of said second housing part about said axis under the influence of said first motor and by rotation of said axle by said second motor.
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Abstract
A portal system is described which consists of two translational axes and two rotary axes which are so arranged and controlled that every point within a cubic working space can be computed and reached. As a result of this special kinematic construction the total complexity for the frame and also the mechanical complexity and cost are substantially reduced in comparison to customary portal systems.
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Citations
13 Claims
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1. Portal systems for the multidimensional movement of a holder member in at least x-, y- and z directions to selectable positions within a working space, the portal system comprising:
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(a) a portal having a crossbeam extending in said x-direction with mounting means for mounting said crossbeam at a fixed location; (b) a first unit movable along said crossbeam in said x-direction; (c) means for moving said first unit in said x-direction; (d) a second unit supported by said first unit for movement relative to said first unit in said z-direction; and (e) means for moving said second unit in said z-direction;
wherein said second unit comprises;(i) a first hollow housing part; (ii) a shaft having an axis extending in said z-direction and having a first end and a second end, and being rotatably disposed within said first hollow housing part; (iii) a second hollow housing part at said first end of said shaft and rotatable with said shaft about said axis; (iv) an axle rotatably disposed in said second housing part and offset to the side of said axis, with said holder member being provided at an end of said axle; (v) said holder member being extensible and retractable; (vi) a first motor mounted at said first housing part and drivingly connectable to said second end of said shaft; (vii) a second motor mounted at said first housing part for driving said axle; and (viii) a transmission extending from said second motor through said first and second housing parts to said axle for rotation of said axle, whereby movement of said holder member in said y-direction is achieved by rotation of said second housing part about said axis under the influence of said first motor and by rotation of said axle by said second motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification