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Mobile Bricklaying Robot
The Need
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Bricklaying is a highly repetitive and
physically exhaustive task. For these reasons, it is logical to consider automatization
for this process. Also, industrialized countries are confronting the problem of a lack of
skilled workers. With the predicted building boom and the decreasing availability of a
skilled workforce, the construction industry can profit from the automatization of the
bricklaying process. 
Scenario of a man-machine-system for automated bricklaying on the job site.
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The Technology
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The tasks of the construction site bricklaying
robot include removing bricks or blocks from prepared pallets, the application of bonding
material and the erection of brickwork at a high level of accuracy and quality. Prototype
realization of the bricklaying robot, which is based on a commercial construction machine,
has been done by two research institutes in close cooperation with ten industrial partners. The design of
the robot is strongly influenced by technological aspects such as the types of bricks or
blocks and the mortar technology used. Proper function of the robot requires:
- handling different kinds and sizes of bricks and blocks,
- detection of and compensation for material tolerances,
- calibration of the brick or block position with respect to
the TCP (Tool Center Point),
- automated dispensing of bonding material,
- robust, site-specific and cost-effective solutions
To meet the above requirements, a number of solutions have
been presented during the last few years but each of them covers only part of the
requirements.
Operation sequence of automated bricklaying
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The Benefits
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The bricklaying robot could reduce costs,
improve quality, and reduce need for skilled labor. |
Status
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The automatic application of thin-bed mortar
using the dipping method has been verified by trials with an experimental robot. A
standard industrial vacuum handling system, which has been slightly modified, turned out
to cover all relevant types and formats of bricks and blocks. A unit has been developed which integrates technological functions such as
TCP calibration, measurement of the block tolerances and application of bonding material.
Future research will include the integration of the described subsystems in the prototype
of the bricklaying robot and extensive experimental investigation |
Barriers
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As a prototypical technology, it is still
under development and improvement. In most of the countries around the world the
implementation of this robot would be more expensive than to hire labor. This is a
technology that is responding to a need of the German construction market. |
Points of Contact
- G. Pritschow and M. Dalacker and J.Kurz. University of
Stuttgart, Institute of Control Technology for Machine Tools and Manufacturing Systems.
Department of Robot and Assembly Systems. Seidenstrass 36, 60174 Stuttgart, Germany.
Phone: +49-711-121-2406, Fax: +49-711-121-2413
- M. Gaenssle. Center of Manufacturing Technologies Stuttgart.
Nobelstrasse 15, 70569 Stuttgart, Germany. Phone: +49-711-13162-31. Fax: +49-711-13162-11.
References
G. Pritschow, M. Dalacker and J.Kurz and M. Gaenssle. Technological
Aspects in the Development of a Mobile-Bricklaying Robot, Automatization and Robotics
in Construction XII. E. Budny, A. McCrea, K. Szymanski (Editors) 1995 pp. 281-290.
Disclaimer Statement
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Neither the Construction
Industry Institute nor Purdue University in any way endorses this
technology or represents
that the information presented can be relied upon without further investigation. |
IRA12
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| Last Modified: Saturday, 24-Jun-00 09:50:16 EST |
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