Features RXU

RXU models – large and stable, precise and dynamic

Design­ing large machines to be rigid, pre­cise and high­ly dynam­ic all at once is a par­tic­u­lar chal­lenge. The mov­ing mass­es should not be too large. Due to the greater trav­el ranges, the lever arms are rel­a­tive­ly long and good rigid­i­ty requires suf­fi­cient pro­file dimen­sions. Roed­ers has solved this chal­lenge with the QUADROGUIDE concept.

The force flow from the tool tip via the Z and Y axes into the machine frame has been opti­mised through an inno­v­a­tive design, achiev­ing very high rigid­i­ty with low mass­es. 4 guide­way rails at the 4 cor­ner edges of the Z‑axis trans­mit the accel­er­a­tion and machin­ing forces via 8 guide­way car­riages to the Y‑axis and from there via fur­ther 8 guide­way car­riages into a sol­id machine por­tal struc­ture with high damp­ing.
Direct-dri­ve tech­nol­o­gy and state-of-the-art con­trol tech­nol­o­gy give the RXU machines unri­valled dynam­ics and pre­ci­sion. Spin­dles up to over 100 Nm torque (S1 oper­a­tion) with still 22,000 rpm enable a wide range of machin­ing oper­a­tions. A high rough­ing per­for­mance in hard­ened or dif­fi­cult-to-machine mate­ri­als, com­bined with top-class sur­face fin­ish and pre­ci­sion, are achieved in a sin­gle set-up.

The fol­low­ing machines are cur­rent­ly available:

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The rotary-swiv­el units of the RXU-series 5‑axis machines are extreme­ly sta­ble and robust, fea­tur­ing large bear­ings and pro­files. Large, pow­er­ful and wear-free torque and lin­ear motors in all axes make these machines to true pow­er­hous­es. This pro­vides ample reserve capac­i­ty even for eccen­tric drilling or rough­ing oper­a­tions and gives the machines a high­ly dynam­ic per­for­mance. The dual-sided strong sup­port of the C‑axis ensures high accu­ra­cy dur­ing long machin­ing oper­a­tions and with vary­ing work­piece weights. Roed­ers relies on large opti­cal encoders not only in the lin­ear axes but also in the rotary axes, result­ing in posi­tion­ing accu­ra­cies of 2 arc sec­onds. Remain­ing mechan­i­cal errors are min­imised using the spe­cial Roed­ers 5‑axis geom­e­try com­pen­sa­tion. Nat­u­ral­ly, all motors in all axes are tem­per­a­ture-con­trolled with high pre­ci­sion to pre­vent ther­mal dis­place­ment. The swiv­el direc­tion of the A‑axis is per­pen­dic­u­lar to the X‑axis move­ment for dynam­ic decoupling.