Technology Control

The Roeders Control RMS6

Röders GmbH Terminal RMS6
Icons Steuerung Control RMS6


The Roed­ers RMS6 machine con­trol sys­tem has been con­tin­u­ous­ly devel­oped and improved since 1994 to meet the most demand­ing require­ments for pre­ci­sion and sur­face qual­i­ty in milling and grind­ing. The open and robust con­trol sys­tem is based on two PC-based indus­tri­al com­put­ers. A 21,5” TFT screen is stan­dard. The few con­trol ele­ments are arranged in a very clear and log­i­cal man­ner. Run­ning on Microsoft Win­dows, the user inter­face is easy to oper­ate and requires only a very short train­ing peri­od. Numer­ous fea­tures, some of which are patent­ed, have been inte­grat­ed into the RMS6 specif­i­cal­ly for milling and grind­ing. Post-proces­sors for stan­dard CAM sys­tems are avail­able. The RMS6 process­es Hei­den­hain® and ISO pro­gram code.

Röders GmbH PRECITEMP Grafik Schwingungsüberwachung Spindel Graph vibration monitoring of the spindle

Vibration monitoring of the spindle

The use of high-speed spin­dles requires a lim­i­ta­tion of the max­i­mum spin­dle load in order to avoid bear­ing dam­age or a severe reduc­tion in ser­vice life. Option­al­ly, the spin­dles can be equipped with vibra­tion sen­sors. A func­tion in the con­trol can be acti­vat­ed that auto­mat­i­cal­ly reduces the feed and, if nec­es­sary, the RPM of the spin­dle in the event of high vibra­tions. In addi­tion, a coloured graph­ic illus­tra­tion of the vibra­tions along the milling path is pos­si­ble. As a result, any areas in the milling path with high vibra­tions can eas­i­ly be iden­ti­fied and can safe­ly be avoid­ed in recur­ring machin­ing process­es by adapt­ing the CAM programming.

Spindle Compensation PLUS

Compensation of spindle elongation

Roed­ers machines have been known for years for their exter­nal high-pre­ci­sion sen­sor for com­pen­sat­ing the spin­dle elon­ga­tion . A hold­er fixed in the cast­ing of the Z‑axis and kept geo­met­ri­cal­ly sta­ble with a tem­per­a­ture-con­trolled cir­cuit car­ries a sen­sor at the end that con­tact­less mea­sures the dis­place­ment of the rotat­ing spin­dle shaft in nanome­tre range. This is com­pen­sat­ed for in the con­trol sys­tem. Since the heat from the spin­dle shaft is trans­ferred into the tool hold­er and it also length­ens as a result, a short warm-up phase had to be pro­grammed for high-pre­ci­sion machin­ing appli­ca­tions before start­ing the machin­ing operation.

Mean­while, the Roed­ers tech­ni­cians have suc­ceed­ed in mod­el­ling the dynam­ic heat­ing process direct­ly after the spin­dle has accel­er­at­ed to full RPM, so that with the new option Spin­dle Com­pen­sa­tion PLUS a warm-up phase can be skipped com­plete­ly in many applications.

Logo umati Partner

Roed­ers is part­ner of the umati ini­tia­tive of the Ger­man machine tool asso­ci­a­tion VDW (umati = uni­ver­sal machine tool inter­face). The umati inter­face enables a stan­dard­ised data trans­fer with the machines of numer­ous sup­pli­ers. umati is an essen­tial step towards indus­try 4.0.

Control Characteristics

The devel­op­ment of the RMS6 focus­es on an opti­mised machine con­trol dur­ing the pro­duc­tion of free-form sur­faces and com­plex con­tours. The RMS6’s per­for­mance is cor­re­spond­ing­ly out­stand­ing, with block pro­cess­ing times of less than 0.1 mil­lisec­onds and a looka­head of over 10,000 blocks. The spline inter­po­la­tion along the tool­path spec­i­fied by the CAM sys­tem is con­tin­u­ous­ly refined down to the nanome­tre range. A smooth and har­mo­nious tool­path ensures opti­mum machine behaviour.


Newest Control Versions

All Roed­ers machines sup­plied since 1995 can cost-effec­tive­ly be upgrad­ed to the lat­est RMS6 con­trol ver­sion due to the PC-based con­trol hard­ware. This also makes old­er machines more pre­cise and faster in their machin­ing oper­a­tions. Fur­ther­more, the full range of newest RMS6 func­tions is avail­able. If a cus­tomer uses sev­er­al Roed­ers machines built in dif­fer­ent years, it is eas­i­ly pos­si­ble to oper­ate all machines with the lat­est – and there­fore iden­ti­cal – RMS6 version.

A dual-screen option is avail­able for the RMS6, for exam­ple, if the oper­a­tor wish­es to have the edi­tor, design views of the work­piece or draw­ings open along­side the con­trol system’s menu struc­ture and sta­tus window.

Terminal Monitor
Speed Optimisation

The vibra­tions of the main spin­dle do not nec­es­sar­i­ly increase steadi­ly as the rpm rise. Depend­ing on res­o­nances, there are ranges with high­er and low­er vibra­tion lev­els. For the machin­ing process, exact rpm usu­al­ly are not essen­tial. With the auto­mat­ic vibra­tion opti­mi­sa­tion, the RMS6 selects, with­in an rpm range spec­i­fied by the oper­a­tor, the rpm at which the spin­dle with the tool­hold­er and tool clamped has the low­est lev­el of vibration.

Tangential Transitions

To avoid steps in tran­si­tion areas that are machined using dif­fer­ent tools, the RMS6 allows a set­ting to be spec­i­fied where­by the edges of the machin­ing areas are raised in such a way that a tan­gen­tial tran­si­tion is cre­at­ed between areas machined with dif­fer­ent tools.

Postprozessoren

Post-proces­sors are avail­able for all lead­ing CAM sys­tems. A detailed post-proces­sor man­u­al is pro­vid­ed to opti­mise the inter­face between the RMS6 and the CAM sys­tem. In par­tic­u­lar, for auto­mat­ed machine oper­a­tion, machin­ing pro­grams can be gen­er­at­ed reli­ably with­in the CAM sys­tem with­out the need for man­u­al para­me­ter input.

The RMS6 offers a high degree of flex­i­bil­i­ty when pro­cess­ing NC-pro­grams for machin­ing a work­piece. ISO (G‑code) and Hei­den­hain® NC-pro­grams are pos­si­ble and can also be used in com­bi­na­tion. In addi­tion, there is a con­sid­er­able range of addi­tion­al com­mands, extend­ing stan­dard NC-code as far as Basic-like pro­gram­ming, which opens up a wide range of pos­si­bil­i­ties, par­tic­u­lar­ly for automa­tion in spe­cialised appli­ca­tions. Fur­ther com­mands can be added at customer’s request.

Röders GmbH Steuerung Screen 1
Röders GmbH Steuerung Screen 2
Röders GmbH Steuerung Screen 3
Screenshot optimaler Werkzeugeinsatz

There are numer­ous strate­gies for the opti­mal use of tools, depend­ing on the appli­ca­tion. These relate to wear cri­te­ria, tool life and sis­ter tools as well as mea­sure­ment strate­gies, geom­e­try recog­ni­tion and inspec­tion. To avoid the time-con­sum­ing task of enter­ing tool data man­u­al­ly, a tool data­base is avail­able, as is the option to import tool data and types.

Röders GmbH Steuerung RACECUT

With RACECUT®, Roed­ers has once again achieved a per­for­mance boost for machin­ing. This func­tion­al­i­ty in the RMS6 dras­ti­cal­ly reduces machin­ing times by up to 20 per cent with­out com­pro­mis­ing qual­i­ty. It is based on fur­ther improve­ments for tool path plan­ning with­in the con­trol sys­tem and a dri­ves con­trol sys­tem oper­at­ing at a fre­quen­cy of 32 kHz. As the machine’s ener­gy con­sump­tion remains rel­a­tive­ly con­stant regard­less of the select­ed dynam­ic set­tings, the ener­gy sav­ings are of a sim­i­lar magnitude.

#Hei­den­hain is the reg­is­tered trade mark of the Dr. Johannes Hei­den­hain GmbH.