Schunk reinforced carbon composite LCx series axes bring benefits of low weight

Schunk says the LCx series RCC modules are around 58% lighter than comparable aluminium modules, so they can be accelerated and moved in an extremely fast and energy-efficient fashion. The high elasticity modulus of RCC also gives the axes superior bending and torsional stiffness. Internal damping reduces vibration and ensures dynamic stiffness, while minimal thermal expansion ensures high precision is maintained even when the axes heat up during operation. Lightweight modules in the LCx series use proven Schunk LDx modules. A servo-electric linear motor drive transmits force directly to the slide. Precision-cut steel guide rails further increase accuracy. The LCx series is equipped with absolute-value transducers as standard to provide repeat accuracy of 0.01 mm per axis. The powerful servo motors achieve such high rated forces that smaller sizes usually suffice or, in vertical applications, allow greater masses to be moved. The modules are space-savingly compact as the motor, measuring system and linear guidance are integrated directly into the axis profile or slide. The standardised carbon axes come in two versions. In the LCN version, which has a simple X profile, the axis reaches a rated force of 200 N and a maximum driving force of 500 N. The LCM version is designed for moderate loads and is equipped with a wide double X profile. This achieves a rated force of 400 N and a maximum driving force of 1,000 N. In both versions, the maximum acceleration is 40 ms-2, the maximum speed is 4 ms-1, and the maximum useful stroke is 1,200 mm. The modules can be used both horizontally and vertically, optionally with either a static profile and moving slide or with a static motor and moving profile. The axes are controlled with Bosch Rexroth IndraDrive controllers. A Siemens Sinamics S120 drive is also possible as an option. Schunk offers all LDx modules with the Profibus, Sercos III, Profinet IO, EtherNet/IP and EtherCat standard interfaces, so the modules can also be easily integrated into higher level system controllers.