Gantry Type
Composition
The LOXIN “Gantry” machines integrate the Parallel Kinematic Module ”Tricept” as its main component. The “Tricept” is a 5 axes interpolating module that provides a high degree of flexibility and accessibility to the work part. It also has an excellent dynamic response in acceleration and speed in all the 5 axes.
The high accuracy of this “Gantry” series are conferred by the “Tricept” module (see specific “Tricept” catalogue) together with a high quality mechanical components for the three (3) orthogonal axes of the “Gantry”.
The “Tricept” Gimbal-support is located in a massive structure in order to withstand the static and dynamic requirements produced during the most demanding production processes.
The “bridge” structure (columns and beam) is made on strongly ribbed steel structures. This design confers to the structure the maximum stiffness and vibration absorption with a minimum weight. This structure offers the following advantages:
- Heavy weight to support extreme heavy axial and twisting forces.
- Heavy inertial momentum necessary to support the high accelerations produced by the “Tricept”.
- High vibration absorption factor.
The columns built in on the lower side preloaded roller shoes for a smooth translation of the bridge along the hardened and ground guides.
Longitudinal Translation
This series incorporates a high quality kinematic chain to provide a very smooth and accurate movement of the “bridge” in any of its operating conditions. It is based on a largely dimensioned “Double Pinion and Rack” device on each column joined to a double guiding system on each one of them.
The Positioning System is made by a double measurement system (Linear Scales) on each side of the “bridge” forming a double, Master-Slave, “Positioning loop”. This design guarantees the absolute orthogonality of the “bridge”cross axis in relation to the longitudinal guiding of the machine.
Cross and Vertical Translation
The “Tricept” platform support is placed on the Vertical saddle. This one is placed on the Cross saddle that moves transversally along two (2) beams.
The Vertical saddle is supported by means of two (2) plates on each lateral side of the Cross saddle. Two (2) vertical guides are located on each of these plates. The Tricept platform slides vertically along these guides providing the vertical movement of the machines. The driving both saddles, vertical and cross, is performed (in each case) by means of two (2) ball screws at each side of the saddle, centered on the corresponding plates. Each one of these saddles have a pair (2) of digital synchronous servomotor controlled by the machine CNC.
Additionally, the vertical system incorporates a hydraulic counterbalance system consisting on four (4) hydraulic cylinders on each one of the corners of the vertical saddle linked to two (2) gas deposits placed on the top of the Gantry beam.
Acceibility 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.
Dynamical 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.
Industrial Apliccations
- Drilling / Contouring Aeronautic Fuselages
- Friction Stir Welding (FSW)
- Railways Wagons Boxes Machining
- Automobile Models Manufacturing
- Moulds and Dies Machining
- Large structural Parts
Important
Phone +34 948 351 423 | Fax +34 948 350 537 | loxin@loxin2002.com