Rotary table systems for precise workpiece positioning
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High precision, short cycle times, dynamic and modular should be a roundtable be the z. B. transported the workpiece to its destination as a positioning system. In machine tools, handling systems, Measuring devices and other applications, it should also function quickly with high repeat accuracy. Below we give you an overview of the developments of various Manufacturers of rotary tables:
Contents
- Low-noise electric rotary table for precise positioning
- Individually configurable rotary table series
- Modular heavy duty rotary tables with several gear stages
- High-speed rotary table with short switching times
- Energy-efficient rotary table for machining
Low-noise electric rotary table for precise positioning
July 29.07.2021, XNUMX | In addition to manual variants Norelem now also an electric positioner roundtable with coaxial electrical Power Type. With the versatile rotary tables, angular positions can be set precisely, quickly and with repeatability to the hundredth of a mm. This makes the Positioning systems for use in handling systems, machine tools or measuring machines.
Despite Motor the electrical positioning rotary table works quietly and requires little maintenance. The prestressed worm gear works almost free of play. the Warehouse of the worm shaft ensure a high degree of radial rotation accuracy. Through the large hole in the hollow shaft you can cables and wires be guided. The adjustable positioning ring is used to set the rotational reference point as desired for the position of the mounted component.
There is the electric rotary table in two sizes:
- Size 8 with gear ratio 40: 1, max.output torque 1,2 Nm
- Size 12 with gear ratio 55: 1, max.output torque 3,0 Nm
Users can choose between a rotary table without a motor, with a motor or with a motor and steering. Cable outputs and control orientation can be set individually. There are in total 18 Varianten to disposal. The housing and the turntable are made of anodized aluminum, the hollow shaft is made of stainless steel. Both Materials ensure a long service life.
Rotary table also for high loads
There is also a rotary table type for high loads. The quick and accurate executions have one angular design. The hollow shaft and turntable are supported by an axial needle bearing. These rotary tables for high loads are only available in size 12. The gear ratios are 10: 1 and 45: 1. The output torque is 3 Nm.
Both rotary tables are compatible with the Stepper motor Nema 17. They can be combined with all other rotary positioning tables of the same size.
Norelem exhibits at the Motek 2021.
Individually configurable rotary table series
Oct 10.10.2019, XNUMX | The round tables of the series RT Compact from To jump Precision mechanics can be configured individually. Housings and table tops in many variants are combined with the standardized assemblies bearing, drive, measuring system and clamping. Adaptation to country-specific requirements is also possible.
The RT Compact rotary tables have a worm gear, are available in sizes 10 to 25 and can be used horizontally and vertically. The highly standardized round table can be combined with different table tops and housing variants.
The worm gear of the RT Compact series is self-locking and enables the transmission of high torques. Due to the varying pitch of the worm a backlash-free setting of the wheelset is given. The components remain due to the Self-locking Safe in their position in the worm gear, a safety clamp is not necessary. The rotary tables with hydraulic clamping are designed for three-axis machines.
Modular heavy duty rotary tables with several gear stages
07.05.2018 | White presents new heavy-duty tables from the CR series. The models have a modular structure, are more finely graduated and can be adapted even more precisely to the applications. For the first time there are several Gear stages to choose from. The central opening for cable or media feed-throughs is more than twice as large as it used to be.
"Thanks to the modular concept, users order the CR heavy-duty tables precisely configured for their production requirements and do not pay for unused reactive power," emphasizes Daniel Ansman, product manager rotary tables at Weiss GmbH. The CR700 and CR900 rotary tables are the first two models in an entirely new family of heavy-duty tables. They are finer graded and offer about 20% more torque. For the first time, users can choose between different gear ratios and configure the tables for the respective loads.
Chuck innovations for efficient metal processing
These configuration options allow components to be matched to one another and prevent oversizing. The CR700 and CR900 models are available in the following versions Precision and Dynamic, depending on whether the focus is on high precision or high dynamics. Both sizes have the same height. The gear unit can be rotated by 90 °, which means it can be used horizontally and vertically.
The um is also new in the series 230% significantly larger central opening as a feedthrough for cables, rotary feedthroughs and upright structures. The fact that the tables are still more rigid is thanks to the geometric optimization and the use of the finite element method (FEM) during development.
The heavy duty tables are freely programmable with the application software WAS. The relevant settings are already pre-configured.
Weiss is exhibiting at the Automatica 2018.
High-speed rotary table with short switching times
July 28.07.2014, XNUMX | The directly driven high-speed rotary tables promise the shortest switching times and flexible positioning Fibrodyne DM from Fibro. After the successful premiere of the two sizes DM.0150 and DM.0200, the rotary table specialist is now rounding off the high-performance endless lathe series with the size DM.0315. The largest model achieves a peak torque of 335 Nm and allows body diameters of up to 1600 mm and transport loads of up to 750 kg.
Due to the small dimensions, the series offers ideal conditions for a particularly compact system design. The rotary tables can be quickly and easily integrated into a wide variety of systems using fitting bores and standardized cable plugs.
With the help of the backlash, wear and maintenance-free Direct drive as well as a measuring system integrated in the rotary table axis, any position can be approached immediately one after the other with an accuracy of ± 21 angular seconds and a repeat accuracy of ± 7 angular seconds. The high-speed assembly tables manage without cooling and can be integrated into a wide variety of systems with minimal effort. A large, central opening in the middle enables energy, signals and a wide variety of media to pass through.
NC rotary table with direct torque drive
Energy-efficient rotary table for machining
Aug 23.08.2011, 50 | The electromechanical rotary table has a XNUMX% higher efficiency and short switching times fibrotor with its worm-roller gearbox an efficient alternative to worm-driven NC rotary tables. It is suitable for light and medium-sized machining as well as for round machining with medium machining forces.
By default it is reinforced with a Table top bearing to accommodate high tilting moments and equipped with hydraulic clamping for high tangential loads. This clamps the rotary table in a non-positive manner in the positioned state so that it can absorb high machining forces. Because the gearbox of the Fibrotor is not self-locking, there is no danger to the mechanics of the rotary table in the event of an emergency stop or power failure. Different drive arrangements are possible depending on the respective area of application.
Fibro offers more than 150 different types of rotary tables. The round tables are swiveling or as a positioning axis as well as used as workpiece carriers in highly productive machine tools.
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Angela Struck is editor-in-chief of the development scout and freelance journalist as well as managing director of Presse Service Büro GbR in Ried.