US 4,870,246 AGranted

Laser beam robot for cutting and welding

OwnerBruno Bisiachinventor

Life of this patent

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Abstract

The laser beam robot is mounted on a portal framework and comprises at least five axes defined as follows: I. A horizontal linear axis for translating the robot along the portal framework; II. an axis swinging about a center coinciding with the point onto which the laser beam generated outside the robot includes onto the robot; III. a linear axis for translating the robot in a vertical plane; IV-V-VI. two or three polar axes in the hollow operating head to orient and focus the laser beam according to a desired path. The laser beam follows a rectilinear path until a mirror positioned in the swinging center of the robot arm and secured thereto, but fixed in respect of axis III. A slit allows the laser beam to strike the mirror in any position of the robot arm along the axis III. The laser beam is sent to the hollow head and from here it is reflected and focused outside the robot.

Claims12

Dependent claims

A laser beam robot with a hollow operating head mounted on a portal framework with at least five axes defined as follows:

I. A horizontal rectilinear axis for translating the robot along the portal framework;
II. a swinging axis for swinging the robot in a vertical plane;
III. a linear axis for translating the robot in the same vertical plane;
IV-V. at least two polar axes in the hollow head;
comprising:
a slit overlapping the center of rotation of said swinging axis and extending on the robot side facing an external laser generator from which the laser beam exits along a rectilinear path;
a first mirror positioned in the center of rotation of said swinging axis and secured thereto, which reflects the laser beam from the generator within the robot toward the operating head;
at least another reflecting mirror and a focusing unit in said hollow operating head for orienting and, focusing the laser beam according to a desired path outside the robot.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/233,447Filed 18 Aug 1988
Priority: IT 68012 A/8726 Nov 1987
Granted: 26 Sep 1989
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B25J 9/026
Cartesian coordinate type: gantry-type
B23K 26/10
Devices involving relative movement between laser beam and workpiece: using a fixed support , i.e. involving moving the laser beam
B25J 9/048
By rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type: pendulum type
B25J 19/0029
Means for supplying energy to the end effector: arranged within the different robot elements