Demmeler DRtb 1400 turning and rotary tables

PERFORMANCE MAKES THE DIFFERENCE

POSITIONING AND TURNING INNOVATION IN PERFORMANCE

Turning, milling, grinding, drilling 
Positioning workpieces precisely and quickly
Ladies and gentlemen, business partners and customers,
We are delighted to present our newly developed and proven rotary and rotary sliding tables in this catalogue Demmeler DRtb 1400 turning and rotary tables  . You can also find information on our 3-axis tilting tables that set benchmarks internationally. No matter whether positioning, interpolation, or rapid turning, we have the right solution for your complex applications.

As a family-owned production company in the field of mechanical engineering, we have developed numerous in-house products besides contract manufacturing, especially in the area of large part machining. We opt 100% for Germany as a production location for our manufacturing. Our company headquarters are in Heimertingen, in the beautiful Allgäu. Economy that meets the highest quality requirements and a high degree of automation are extremely important to us.
Right from the word go, we have aimed to achieve the highest machining performance and precision in our manufacturing.

Johannes Demmeler
Executive Partner
DEMMELER Automation

Precision as the key to success

The right solution for every application
Our rotary, tilt, and carousel rotary tables set a clear mark due to the extremely robust design as well as a high level of precision in the micrometre range, speed, and repeatability.
The decisive factor for the durability and precision of the rotary tables is not only the potential loading but rather the largest possible bearing diameter in relation to the worktop size. The machine bed itself is very compact and space-saving. It is well-protected under the steel cover. All the necessary regulation and control elements are easily accessible in a power box located in the rotary table.
Thanks to the standardized, plug-in-ready interface, the rotary table can easily be connected to all machine tools.
In addition to rotary tables for positioning workpieces for milling work, also in interpolation operation, patented tilting tables with additional axes, for example, are among the repertoire. Due to the standard angular adjustment of up to 100°, these are suitable for milling large and heavy components and, for example, are used in wind energy technology. Pallet changing systems are used to automate machining centres due to the multiple pallets and the ability to set up during main working hours.
Thanks to a powerful drive train design, our carousel rotary table achieves very high machining torques, which makes a very good machining performance possible. In addition to milling, it is also possible to turn and grind workpieces.

Unlimited opportunities

Rotary tables from DEMMELER for all requirements

Outstanding technology plus impressive dimensioning

The assemblies at a glance

Linear carriage
The generous hydrostatic bearing is designed for the maximum diameter in relation to the worktop. The hydrostatic guide means there are no wearing surfaces, making it ideally suitable for machining with the highest requirements and best accuracy. The additional slide linings on the hydrostatic surface ensure reliable functionality and optimal emergency running properties.
The quiet, wear-free drive with maximum diameter is realised via an amply dimensioned external sprocket with play-free precision gears.
The integrated Duo-Drive-System, two electronically coupled servomotors, ensures excellent drive performance.
The rotary axis is designed for infinite positioning in every angle position as well as for track milling as a controlled NC axis.
A centrally located rotary encoder with the highest resolution (higher resolution via control possible) ensures high-precision angle positioning and perfect turning accuracy, even with very large workpieces.
The radial run-out accuracy in the range is ensured by the central arrangement of the pretensioned radial precision mounting.
Hydrostatic surrounds with integrated hydraulic clamping ensure maximum transmission of tilting and tangential moments. The generously dimensioned design of this clamping clamps the table non-positively. As a result, the outmoded design principle of a Hirth serration is far surpassed in regard to power transmission, thereby making it superfluous.

interface to the machine
Easy connection to and integration in the machine via central plug-in interface.

Worktop
Highly ribbed and stable cast construction. The worktops are optionally available in high-quality grey or nodular cast iron.
Hardened centring adaption in the middle for holding devices and workpieces.
Worktop radial run-out accuracy: up to mm, depending on size and type.
Worktop axial run-out accuracy: up to mm, depending on size and type.
Maximum drive and support diameter for the highest precision.
Centric hydrostatic mounting minimizes the deflection of the worktop.
Generous mechanical labyrinth seal to the carriage prevents harmful penetration by fine dirt particles and ensures a long production life.
Depending on customer requirements, media can be guided through infinitely either hydraulically, pneumatically, or electrically via an optional central rotary transmission.
Optimization of the worktop with FEM method is standard.
Highly ribbed and stable cast construction. The worktops are optionally available in high-quality grey or nodular cast iron.

Ratio of bearing diameter to worktop size
The theoretical loading of your table is significantly higher than the value indicated. As a rule of thumb: It is not only the additional load that is decisive for durability and precision, but rather the largest possible bearing diameter in relation to the worktop size.

Bearing Ø = drive Ø

Asymmetric load | Symmetric load

Guide bed and bearing types

The assemblies at a glance

Design versions of the guide bed
Our NC rotary tables are available in two versions.

The N-version (Normal) is suitable for loads up to 250 t.

A higher number of guides and more stable design of the carriage and guide bed enables loads up to 500 t with the S-version.
The DEMMELER NC rotary tables are distinguished by the highest precision and rigidity and represent outstanding value for money.
The version with a hydrostatic linear axis, also available, ensures that our rotary tables also have the best damping properties.

N Version (Normal)
Rotary table with linear axis, loads up to 250 t, 2 guideways

S Version (Heavy)
Rotary table with linear axis, loads up to 500 t, up to 4 guideways, additional fasteners in the center

H Version (Hydrostatic)
Rotary table with linear axis, loads up to 500 t, up to 3 guideways, additional fasteners in the center

Guide bed
Compact, space-saving, very stable machine bed. With two, three, or four guideways corresponding to the loads.
The guide bed is available in different travel paths:

Distance-coded or absolute length measurement system for precise positioning accuracy in the μ range.

In the heavy-duty version with up to 4 guideways, additional pretensioned fasteners in the center of the machine bed ensure the highest table loads with the lowest deformation.

Travel paths from 1,000 to 10,000 mm (larger travel paths on request).

Compact, maintenance-friendly motors and the cable drag are located protected against dirt below the stable jet covers with corrugated plate.

The drive is realised via a generously dimensioned ball screw spindle for a process speed up to 25 m/min, maximum feed force up to 50 kN. Alternatively, a rack-and-pinion drive can be used in relation to the feed force and travel path.

TESTED EFFICIENT ROBUST
Rotary axis Linear axis
roller bearings raller bearings
Rotary axís Rotary axís Rotary axis
hydrostatic hydrostatic Rotary axis Línear axis гolleг bearíngs
hydrostatic hydrostatic ιs

Linear Axis
Various types of bearings are available, depending on wishes and requirements. We shall be pleased to advise you in the choice of the correct mounting.
DEMMELER Automation 13

Highest precision in every position
Series designations.
The series at a glance:

DRTB = without linear axis

DRLTB = with linear axis

DRTB / DRLTB: Roller bearing rotary tables

DRT / DRLTH: Hydrostatically mounted rotary tables

rotary and rotary sliding tables with roller bearing
Rotary and rotary sliding tables with hydrostatically mounted rotary axis and roller bearing linear axis

Application field: Milling and drilling

Functions: Highly accurate positioning and interpolation

Permissible workpiece weights: Up to 60,000 kg

Hydrostatic version ensures best damping properties and high-precision machining

Permissible workpiece weights: Up to 500,000 kg

DDRCT / DDRCLT: Carousel rotary tables
DRAT / DRALT: Tilting tables with direct drive
THE NEW GENERATION
Carousel rotary sliding table with direct drive with roller bearing rotary axis and roller bearing linear axis
Tilting tables with hydrostatically mounted rotary axis and roller bearing linear axis and tilting and linear axis

Application field: Turning, grinding, milling, drilling

Functions: Rapid turning, highly accurate positioning and high-precision interpolation

Permissible workpiece weights: Up to 20,000 kg

Permissible workpiece weights: Up to 150,000 kg

Angular adjustment: Up to 100°

DEMMELER Automation 14

OUR PERFORMANCE MAKES THE DIFFERENCE
Hydrostatic mounting makes THE DIFFERENCE

Very low wear

Very high loads possible

Highest precision surfaces attainable

Linear axis mounted on roller bearings as standard

Kind to tool and machine despite very high machining performance

Linear axis optionally hydrostatic

DRCTB / DRCLTB: Roller bearing carousel rotary tables with Duo-Drive
DRCT / DRCLT: Hydrostatically mounted carousel rotary tables with Duo-Drive
Carousel rotary sliding table with Duo-Drive and roller bearing rotary and linear axis
Carousel rotary sliding table with Duo-Drive, hydrostatically mounted rotary axis and linear axis

Application field: Turning, grinding, milling, drilling

Functions: Rapid turning, highly accurate positioning and interpolation

Hydrostatic version ensures: Best damping properties and high-precision machining

Permissible workpiece weights: Up to 60,000 kg

Permissible workpiece weights: Up to 130,000 kg

DRVT: Vertical rotary tables
DAT: Swivel tables
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AUTOMATION
NC Vertical Rotary Table
Swivel Tables

Application field: Milling, drilling

Application field: Automation

Functions: Clamping and machining on vertical worktops (optionally also horizontal use possible)

Functions: Enable convenient clamping of workpieces on horizontal worktop, processing in vertical worktop position

Permissible workpiece weights: Up to 100,000 kg

Permissible workpiece weights: Up to 50,000 kg

DEMMELER Automation 15