FÖHRENBACH GMBH - Positioniersysteme

The V shape of the shaft support is the result of purposeful internal development work at Föhrenbach. The most important advantage comes from having the greatest possible distance between the shafts and above all in the lay-out of the four ball-bearing housings whose loadbearing rows of balls are located underneath the shaft. The unitized, modular type like design realized with these devices enables to cover a wide range of application specific solutions. Manufactured in standard widths from 75 to 425 mm and in lenghts of up to 4000 mm, the products are designed to provide solutions that allow to cover almost all handling and mounting tasks that need to be met. An experience of long standing assures for competent solutions.

The profiled guide slide PFS is available in 5 series with sizes from 100 mm up to 425 mm width and strokes up to 2000 mm. To protect them against dirt accumulations, the slides are covered with bellow covers. Other covers on request. The slides are available in aluminium (nature anodized), or casted iron GGK-25. Optional steel C-45. The ball thread spindle drives are available in the qualities T5 and T7 with spindle pitches from 5 to 50 mm. PFS (basic equipment) ball screw spindle acc. to standard type allocation screwed up bellows cover coated on both sides integrated inductive limit switches (PNP break contact) incl. plug-connector in the endplate

Type MR - roller bearing mounted slide /Typ MS - dovetail slides Positioning accuracy: 0,001 - 0,1 mm according to the spindle used and the feedback system Drive: Stepping or direct-current motors

With high demands on accuracy and dynamics, the base frame in welded construction or hard stone is also a possible and reasonable part of the scope of supply. Here, all axes are specified, assembled, aligned, measured, tested and recorded - according to desired specifications. By means of hard stone, the required accuracies can be achieved. Hard stone offers all the characteristics required - ranging from a small coefficient of expansion, high abrasion resistance, optimum vibration damping, absence of unwanted residual stresses up to the necessary accuracies regarding flatness, parallelisms and angularity.

This multisided applicable precision rotary table is available in installation size of 300 mm of rotary plate diameter. The rotation plate is stored by a tempered roller-bearing. This enabled high moment rigidity within the radial and axial range as well as free positioning at less friction moments. The drive takes place alternatively via stepper- or AC servomotors by a hardened and polished precision worm with a worm wheel of bronze. The rotary table is horizontal and vertically applicable by standard drilling plan and bolting face.

The series of RT2A distinguishes by compact design with integrated precision roller bearing and worm drive. The rotary tables are sealed, IP 50 and can be driven in all fitted positions. For the mounting, standard drilling plans and special mounting flange and clamps can be used. Different limit switches are available: Standard: reference impulse, PNP-NC, 2 channel.

While the conventional drives are dependent on an external controller unit, for the compact drives no additional controller is needed. The complete electrical parts, including the drive controller and encoder, are integrated on the motor board. Programming is done via standard PC using free software. The operation can be done without a PC, the created driving programs are stored in the compact drive and can be accessed via a separate input. Compact design Integrated motor controller and encoder RS485 or CANopen Interface Operating modes: positioning, speed, flag-position, clockdirection, analog, analog position, torque Position monitoring with automatic error correction up to 0,9° Step resolution max. 1/64 Integrated temperature monitoring Step frequency 0-50 kHz at clock-direction-mode and 0-25 kHz at the other modes

Rotary tables with direct drive series RT3 The rotary tables with direct drive are available in different types: RT3A100x100, RT3A100x155, RT3A080x130, RT3A150x100, RT3A150x130, RT3A250x170, RT3A200x060 und RT3G630x225 Rotary tables RT3G630 – high dynamics, high precision, high loading capacity This direct driven rotary table RT3G630 has particularly been developed for machine tool industry and assembly machines. It is characterised by its high precision, highdynamics and its high loading capacity. The rotary table is driven by a permanently excited 3-phase synchronous motor. The rotary plate and the housing are made of gray cast iron.

A lever clamping permits a simple, fast and exact adjusting of different working levels, without any efforts to adapt the devices. The swivel unit is available for the rotary tables RT2A075, RT2A100, RT2A150 und RT2A200. Field of applications: Assembly technologies, measuring and testing equipments, laser writing, welding, cutting, as well as special mechanical engineering. Features (RT2A100, RT2A200): Individually adjustable swiveling range from -5° to +95°. Fixed stop iin the 0° and 90°. Other positions possible by customer request. Clamp and locking effect through laterally installed, adjustable clamping lever. On one side appropriate scaling in 1° steps. Fixing of the swivel unit through four countersinking holes in the base plate.

The new designed rotary swivel unit RT2A is the ideal solution for retrofitting your machine with a 4th and 5th axis. It is based on the proven and robust rotary tables of the RT2A series. The design is kept very compact to ensure the best possible use of space with high load capacity. The rotary tables are equipped with an integrated precision roller bearing, which ensures high torque capacity, radial and axial run-out accuracy. The rotary swivel unit RT2A is available in the size variants RT2A150/200 and RT2A100/150. Various stepper or servo motors can be used as drives. In addition, various types of end or reference point switches are available. The swivel range of the swivel axis can be individually defined, the rotary axis can be rotated without limit. Thus the RT2A rotary swivel unit combines all the advantages of a field-proven standard product with the flexibility of a special version.