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Mechanical Components - Introduction to Industrial Robots


Robot Classifications




Cartesian Coordinate Robots

CCRs are highly configurable, rectilinear robot systems which, in a basic configuration, include an X and Y axis. Three axis CCRs, incorporating an X, Y, and Z axis, are also common for positioning tools, such as dispensers, cutters, drivers, and routers. Each of the axis lengths are selectable, with the ability to attach different types of Z-heads. Payloads and speeds vary based on axis length and support structures. CCRs are also typically very repeatable, have better inherent accuracy than a SCARA or jointed arm, and perform 3D path-dependent motions with relative ease. However, the CCR’s key feature is its configurability – the ability you have to configure and size the CCR to best meet your application needs.

 

Best of all, you pay only for the axes you really need! If two axes are required, you buy a 2-axis CCR and save. If three axes, you buy a 3-axis CCR. If four axes are needed, you have the choice of using a SCARA or a CCR system, which ever best meets your application needs. If odd configurations are required, then the flexibility of CCR systems gives you many more possibilities to consider.

A gantry robot is a special type of Cartesian robot whose structure resembles a gantry. This structure is used to minimize deflection along each axis. Many large robots are of this type. The X, Y, and Z coordinates of a gantry robot can be derived using the same set of equations used for the Cartesian robot.

 




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