App. B—Commissioned Background Papers
Daiwa Securities America Inc.
application which Electric Mfg. , at
largely used light present, dominates
weight welding guns. the arc welding robot
with its relatively welding robots for
low-p riced playback work on heavy plates
Shinmeiwa developed arc Osaka Transformer developed
arc welding robots for work on more expensive, continuous path
Kobe Steel arc welding
has produced a
produced two robot, and a duced a very
robots suitable for arc welding: low priced articulated playback competitive arc welding robot.
a sophisticated intelligent robot. Matsushita has intro-
With Matsushita entering the arc welding area and with Hitachi capable of substantially increasing its output, it is entirely possible that these two firms will ultimately dominate the arc welding market.
SPRAY PAINTING AND COATING
Painting robots are the third largest type of playback robots and
are now growing at as the arc welding
the same robots.
rate as spot welding robots but not as Spray painting and coating offer a rich
of application. of experience.
To become skilled, a coating worker required 2-3 years However, the poor working environment and the tendency
to a more educated society contributed to a developing skilled worker shortage. The necessity for a large percentage or rework made pro- duction planning difficult.
The industrial robot provided certain advantages in painting:
They insured stability of product quality and therefore made
possible improved production planning and control. Despite the selection of the most skilled workman for finish coating, the quality of the finish varied according to the workers and the conditions of the day. In auto-
mobiles, the paint finish of a car, and especially its uniformity, is a determining element in the Japanese domestic consumer preference.
They made possible a multi-product mixed batch coating line.
They provided continuous production operation and reduced
the need for intermediate stocks.
machines tended to increase the use of paint to preclude uneven coating,
especially in complicated shapes.
In addition, special purpose auto-
matic coating machines tend to multi-product coating line. In a savings of 10-20% in the use
overspray paint on smaller products in a
the case of of paint has
spray painting an been effectuated.
auto body, Reducing
of paint reduced