Exploratory Workshop on the Social Impacts of Robotics
Mitchell Hutchins Inc.
There are basically two classes of robots:
Non-servo controlled robots in
points of each axis.
which the tool center different motions can There is no provision
point can stop only at the be programmed in sequence, for acceleration or deceleration.
Servo controlled robots are to stop at any point within flowing through servovalves eration to be achieved.
far more sophisticated and can generally be programmed
its range of movement.
Motion is controlled by oil
Robot control usually takes two forms --point to point and continuous path. A point to point robot can be programmed to stop at predetermined points, but move-
ment is not controlled between these points. an irregular path exactly.
A continuous path robot can follow
Low technology robots can often complete a task as well as the more sophisticated models. The Japanese appear more acutely aware of this and tend to concentrate on implementing existing
the industrial robot must be
a practical device to successfully pene- many industrial manufacturers indicates
1. Flexibility of applications, either in the area of (material) handling or as a processor (painting, welding, etc.).
High level of reliability with a minimum of downtime.
Ease of teaching, either with on or off line programmability, teach boxes.
Who Would Use
In 1979 the RIA estimated that six industry segments accounted for the bulk of unit robot shipments in the U.S.
1979 Estimated Unit Shipments
Automotive Casting/Foundry Heavy Manufacturing Light Manufacturing Electrical/Electronic Aerospace Other
% of Total
RIA . Source:
As the majority of robots installed in the U.S.
today are low or medium technology devices,
of user purchases of robots by value
would early lines
probably yield a
different hierarchy end use market by