"Eight" the word unit

Robot has been installed in the workpiece fixture A or B, alternate welding. Welding fixture is not a safe state, does not allow the robot to enter. Operator in order to complete the last cycle out of welding products, installed the new card is a good piece. It can be seen from Figure 3, the workpiece is divided into the products and finished products, respectively, on both sides of the operator.
The whole line of the station are used for "eight" the word unit layout, sufficient space is more suitable for the production of occasions,  and a unit of work must be configured with a worker, more waste, is not conducive to lean production. If a station fails, it will cause the entire assembly line production. Of course, the use of this form, can be pipelined into each station, have developed a standardized unit of work, for fixture manufacturers to focus on the manufacture of a large number of different fixtures on it.
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Developmental
Feeding the handlebars with the workpiece fixture has been installed the way sent to the robot position (Figure 4), can greatly reduce the human intervention, the purpose of achieving savings in manpower. The positioner is automatic handling equipment and facilities, you can check the system by people before the operation and function of completely mechanized welding quality, the equipment is more advanced and complex.
* With the high development of robot control functions, the introduction of new external robot controller for robot axis instead of machinery into the fixture, without the coordination of welding fixture positioning system (Figure 5). Implementation is divided into: the robot holds  the workpiece operation and no fixture, with rotary joints and other forms
* In a robot control cabinet and control 2 (or more) robot coordination system, also known as same-station, dual coordinate system, the advantage of simple programming;
* Robot workstation applications, enabling users to be more focused on how to improve the fixture and peripheral equipment;
* Touch screen, industrial bus (INTERBUS, PROFIBUS, DEVICENET) applications, so that the flexible system possible. The same device   can perform a variety of work, such as Shanghai GM's production line can produce two collinear models, saving a lot of money to improve the competitiveness of enterprises.
In short, versatility, ease of use, flexible use of the future development direction of the robot.