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COPRA® Hexapod Robot:
Special device for mechanical engineering – Parallel robot  

Conventional serial standard robots are ill-suited for certain tasks such as handling heavy objects, as this causes too much strain in the segment-close base device of the robot arm. One solution to this problem would be to link the base directly to the end segment in order to distribute the strain more evenly.

 data M Engineering has developed a special parallel robot architecture for this purpose working with as many as 6 degrees of freedom. The so-called hexapod mechanism is a complex mechatronic system. The mechanism consists of a movable platform and a firm base. Both are linked with each other via kinematically independent elements. Each of these elements has two joints which absorb both traction and weight stress. The unique architecture enables us to design machines which meet almost any demand imaginable in terms of burden and movement dynamics – and each such device can be custom-made on request.

Example of use:
Heat release decal application machine 
for the ceramic industry

Flexible control for any purpose

The highly precise electrical drive is controlled by means of a personal computer with  Windows operating system. This is a inexpensive solution for the comparatively high power offered. The user interface is separated from the basic control. Thus customer- and application-specific modifications can be made by using programming tools such as Visual Basics and C++.

• Open PC technology

• Communication module via ethernet and TCP/IP record

• Programming of robot control by Look-Ahead method (straights, 3D splines)

• Compact control

• Remote service via internet (VPN) or ISDN

• Integration of additional sensors possible

• Interface for SPS

Fast Facts

Parallel robots have a number of advantages compared to serial robots:

• They work more precisely due to their sturdier built. Errors occuring in the single arm segments do not sum up.

• Parallel robots can transmit more load than serial robots using the same drive forces.

• They have higher dynamics and a quicker acceleration rate due to their lower mass.

• Expenses for material can be kept comparatively low. 

• Design can be modified as a range of identical components can be integrated in the robot – advantage for mass production

• Low impact of production tolerances on precision of the whole system.

• Near the fixed base drives can be flanged to the moving parts. The result is: 
  A big choice of drives because weight is not an issue.
  Easier cabling and thus higher reliability