Loxin

Tricept

Visit the PKM Tricept website

Structure

The Parallel Kinematic Module used by LOXIN is a 5 Axes machine able to interpolate each one of them to position the tool or “End Effector” located at the end of its actuators.

This Module is based on three (3) linear actuators that join over a point at the end of a sliding Central Tube, known as the “Wrist”. These four components are lodged on a support frame, known as the “Gimbal support”.

Centred on the central “Wrist”, the module incorporates a 2 rotary axes Spherical head, where the Tool or “End Effector” is located.

This composition offers an extremely versatile machining module of high stiffness and flexibility combined with excellent accuracy and repeatability features.

 

Positioning Loops

For the spatial “Wrist” positioning control, an independent “Direct Measuring System” (DMS) is used, and is composed of:

• 2 Rotary Encoders for Pillar indexing.
• 1 Linear Scale, for Pillar axial positioning.

For the spherical head, the “Wrist Measuring System” (WMS) is used, with two (2) built in high accuracy absolute rotary encoders.

• 1 Rotary Encoder for 4th axis.
• 1 Rotary Encoder for 5th axis it.

The combination of these systems, DMS + WMS, together with the high quality of its mechanical components, provides an optimal degree of accuracy and repeatability to the whole module. These features are maintained during the heavy duty processes and in the whole of the reachable volumetric area.

 

Machine Components

Bearings and joints of high quality in all of the mobile parts, allow a structure free of backlash.

Linear actuators based on extremely rigid and high accuracy “planetary rollers” screws, provide excellent dynamic features to the system.

Cutting edge and highly reliable digital Servomotors of the latest technology in all the 5 axes offer the best possible performance in all conditions.

 

The servomotors for the rotary axes (4th and 5th) are of a special high torque type assuring the smoothest and most uniform motion even at the slowest speeds.

 

Accessibility to Hidden Areas

The high flexibility of the module and its spherical head (4 & 5th axes) allows excellent accessibility to the most hidden areas at very high speeds.

 

Dynamic Orbital Features

The interpolation of the linear actuators allows excellent dynamic features in boring and orbital operations. In these cases, combined movements between heavy structural parts of the machine (Columns, Rams, etc.) are not required.

• End Effector

Important

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