rotary table machine factory

Manufacturer of standard and custom 360 degree linear rotary tables for scanning, assembly, testing and production applications. Features vary depending upon model, including worm and gear drive design with central rotating ball bearings, manual and motorized operation, hollow spindles, four mounting holes, accessible adjustment clamps and graduated knobs. Accessories such as rotating table adapter plates, brackets, platform shelves, thumbscrew locks, alternative knobs, limit switches provided. Manually operated rotary motion turntables also available. Suitable for mounting and rotation of test specimens, cameras, transducers, sensors, mirrors and other components. Stock items and repair services are offered. One year warranty. Made in the USA.

At Rusach International,rotary table design, engineering and manufacturing & pallet system design, engineering and manufacturing is our specialty. We can supply rotary tables from 100mm up to 8 Meters in diameter.  See our rotary table pages.  We specialize in high accuracy, up to +/- 1 arc second, heavy load capacity, large work pieces, production style, heavy duty rotary tables and pallet shuttle/storage/transfer systems.  We also have a line of standard small production tables that are very cost effective, yet can be customized per application.

Rusach International systems are not proprietary and therefore can be integrated into any machine, control system or application. We do not believe in “locking” a customer down with proprietary parts!  We work with all the major industry control, motor and encoder manufacturers.

Many rotary table manufacturers outsource gear fabrication to lower costs. While that strategy may offer short term cost savings, Index Design’s American made rotary tables are built with gears cut in house. This is the only way to closely monitor and control tolerances, consistency and performance.

Our rotary tables incorporate large diameter high tensile bronze worm gears mated against hardened steel drive shafts. The combination of metal gives superior wear properties for long lasting operation. As the rotary table is run, the properties of a tin bronze gear develops a low friction deposit on the mating steel drive shaft. These deposits fill in microscopic pores of the mating surface. Over time, as these deposits are embedded on the surface, wear decreases followed by a reduction in frictional forces within the gear assembly.

In addition, the data gathered from our automated calibration procedure allow our engineers to assess, monitor and improve the static and dynamic performance of prototype rotary tables during the design phase.

Our engineers have a long and rich history in the machine tool business, they combine decades of both CNC machine tool and rotary table manufacturing experience with the latest design tools to produce rotary tables with superior performance and dependability.

Our CAD/CAM software is used to analyze displacement and stress for each component, sub-assembly and total assembly. However, the best software and technology is worth next to nothing if no one understands the craftsmanship. This is particularly true when manufacturing precision rotary tables which involves many steps. Despite all the modernization and automation available, a large part of the manufacturing process is still completed by hand. At Index Designs, we understand and appreciate craftsmanship, It is designed and built into our products.

rotary filing—that is, running a circular cutter withfile-like teeth in the headstock of alathe.Rotary filling and later,true milling were developed to reduce time and effort

is a specialist in the design and manufacture of a wide range of CNC rotary tables and index tables. At TANSHING we are dedicated to research and development and technological innovation continually.

From design, and precision machining, to rigorous quality control, great care is taken to ensure an international quality level. TANSHING"s products are widely recognized in both domestic and overseas markets. The innovative dual lead worm drive system has been patented in Taiwan which is indisputable proof of the superior R&D capability of TANSHING. TANSHING has been certified by AQSR ISO-9001 (U.S.A.). In order to ensure very high precision parts, TANSHING has invested heavily in various advanced machining equipment. 90% of our in-house parts machining allows us to fully control the accuracy of the parts, which provides a solid foundation for the superior quality of TANSHING CNC rotary tables and index tables.

Indexing tables are used in a multitude of industries and in numerous applications. Their design is optimal for many manufacturing jobs, and they are a critical component in most automated manufacturing systems. Indexing tables are best defined as a machine tool positioning device. They carry components in a manufacturing environment with a repeating process of indexing (rotating) around an axis, stopping, dwelling while an operation is performed, then indexing again to repeat the process. They are usually made of circular steel plates, with one or more spindles, a drive system, encoders, sensors, controllers and slots or mounting holes to hold components.

Virtually any manufacturing operation can be performed on a part held by an indexing table including welding, grinding, drilling, assembly, painting, inspection, testing and more. In order to maximize operational efficiency, the machine doing the operation must also be built for the same intended application as the indexing table for them to work in synch. Similarly the machine that loads the indexing table with parts must also be synchronized. They must have the same capacity and be able to manage to the same dwell time for the system to work.

If the timing of these machines are coordinated, the time to operate on or assemble a product can be a fraction of that of workers assembling a product.

Industries that use indexing tables include automotive manufacturers, bottling companies, microchip manufacturers, pharmaceutical makers, consumer products companies and many more. They are invaluable to manufacturers pushing for automation and increased efficiency in their factories, turning work that used to take days into work that takes only hours. If a simple assembly task is required on small parts in a factory, there is no better way to complete the task than by coupling an assembly tool and an indexing table.

A rotary table used in conjunction with a mill allows a machinist to produce virtually any part they can design. Sherline’s rotary table is a precision piece of equipment that has been designed to work with their vertical milling machines. However, it can be used on any mill whenever the small 4-inch size would be an advantage. The only limits are size, not complexity.

The table is 2″ high and 4″ (100mm) in diameter. The main components have been machined from solid bar stock steel, and the complete unit weighs seven pounds. The table has been engraved with a laser, giving sharp and precise lines every 5°, numbered every 15°. These lines are calibrated with the 72-tooth worm gear that is driven by the handwheel. The handwheel is divided into 50 parts, making each line on the handwheel 1/10°. This allows a circle to be divided into 3600 increments without interpolation. Seventy-two revolutions of the handwheel rotate the table one revolution.

The rotary tables can hold more weight when they are not under a continuous load. Click on the Video tab above to see examples of different weights and uses for our rotary tables.

The table T-slots are identical to those used on the Sherline mill and lathe, making the vast line of Sherline tooling available for use with this product. Two hold-down clamps and T-nuts are provided with the table. Also included is an adapter that allows Sherline’s 3- and 4-jaw chucks to be screwed directly to the rotary table. An optional right-angle attachment is available (P/N 3701) to mount the table in the vertical position to increase its versatility further. With the table mounted vertically, an optional adjustable right-angle tailstock (P/N 3702) can be mounted to the mill table. It is used to support and stabilize the other end of long work held in a chuck or otherwise attached to the rotary table.

Machining errors are inextricably linked to the design solutions and manufacturing quality of CNC machine tools. Rotary tables are one of the most important design elements of many machining centers and specialized machine tools. Their characteristic features are the large rotating or turning masses (the tables themselves and the workpieces) moving into different positions, which results in significant alternating forces affecting the structure and applied working positions. In addition to the typical causes of errors such as inaccurate positioning, positioning transducer errors, temperature errors, etc., such forces can be additional causes of significant machining errors. It has been confirmed by tests on machine tools with rotary tables. In this article I would like to describe some diagnostic methods for setting, positioning and movement errors of rotary tables in CNC machine tools, which allow finding the causes of machining errors resulting from inaccurate operation of such tables.

The design solutions for machine tool rotary tables are different, depending on the particular design of the machine tool, the way it works and its purpose (Figures 1, 2, and 3 show three different table solutions):

• Rotary table working as rotating object holders, also with possibility of positioning, used e.g. in carousel lathes (Figure 1 shows such table as an interchangeable pallet). This design, in addition to the rotating mass, introduces additional elements that may affect machining errors – automatic clamping of the table pallet to the table base plate, configuration of the table base drive (gears, chains, etc.).

• Five-axis machining center rotary tables, mounted in a linear axis (usually X). An example of such a table is shown in Figure 2a, during angular positioning measurements.

The accuracy requirements of this table type in 5-axis machining centers, due to their application in freeform machining, are usually very high – measurements should be made with top-class equipment, with current calibration and with great care. As can be seen from the graph in Figure 2b, a relatively high positioning accuracy of ±0.0002° angular (±0.5″) has been achieved, with repeatability from three passes with ±0.4″ reversals.

The result of measurements with less accurate equipment may spoil the achievable accuracy, as electronic corrections will then not relate to the actual achievable angular positioning accuracy of the table, but will depend on the capabilities of the measuring equipment.

As you can see from the picture, with this machine design, the very way of setting up for measurements, with the required high accuracy and stability of measurements, and at the same time referring to appropriate dimensional bases, requires some practice and imagination.

Presenting this table design, I would like to describe an example of a machining error diagnosis resulting from a rotary table setting error. The user of the machine shown in figure 3 asked me to take positioning measurements of rotary axes and to correct electronic angular errors. He found these errors following machining errors on the workpiece, where it was machined symmetrically on both sides (after rotation of -90° and +90° from the horizontal position), and the asymmetry error was about 0.2 mm. The machining was carried out 200 mm above the table surface. My measurements showed that this error, as the result of a rotation error from -90° to +90°, should not be greater than 0.01 mm, so this was not a problem. After turning the table by 180°, in order to hit the same point on the other side of the object, the spindle had to be moved 400 mm further along the X-axis. In fact, the error was due to the fact that, in the angular position “0”, the table’s base plane was not parallel to the offsetting of the X-axis guides. It is very likely that someone incorrectly set the “zero” of table’s tilting axis. Basing on the measurements, I eliminated the error in the angular positioning of the tilting axis as the cause of machining errors, and this allowed me, after analyzing the machining method, to find the real cause.

As CNC machine tool technology has evolved it’s possible to do more operations better, faster and at lower cost than ever before. These advances also mean that there are more machine components and accessories to monitor and maintain. Often overlooked are rotary or trunnion tables that reduce setup and cycle times and, in many applications, enable the machining of complex parts.

Properly functioning rotaries and trunnions are essential to making accurate parts, and like other critical machine components should be checked regularly for signs of wear or damage. The most obvious tipoff that something is wrong with the rotary device is that you experience difficulty setting up a part, or begin producing out-of-tolerance parts. However there are 3 simple checks that, if done regularly, can help keep your rotary tables and trunnions in peak working order:

Check the oil sight glass for discolored or cloudy conditions. This may indicate that a seal has failed and coolant, dirt or other debris is in the lubrication system. Contaminated oil cannot properly protect the inner workings of the rotary device and can cause thousands of dollars in damage.

If you find that your Haas made rotary devices need maintenance or repair, contact your Torrance, CA Haas Factory Outlet for quick and reliable service. Since 1986 Haas has built and sold over 55,000 rotaries and trunnions for Haas and other machine tools, and provides comprehensive service on all 35 models.

Most jobs are turned around in 7 to 10 business days and include a thorough inspection to determine what components need attention to bring the rotary device back to factory specifications. This process includes:

Your Torrance, CA HFO technical service professionals will be happy to discuss your specific rotary device needs and can provide rentals or loaners to help minimize the impact on your production schedules. Learn more by calling Gabriel Monroy, 310-381-0750 Ext. 17526. Or email: gmonroy@haasfactoryoutlet.com. Visit www.haasfactoryoutlet.com for all the local Haas news.

Hexagon Manufacturing Intelligence has extended the accessory range for the Optiv Performance 663 and Optiv Performance 664 coordinate measuring machines (CMMs) by adding two new computer numeric control (CNC) rotary tables and the Optiv Dual Rotary CNC stacked rotary tables as options, substantially widening the application potential of the multisensor machines.

The use of the fully-integrated CNC rotary axis increases the overall inspection performance, especially when measuring rotationally symmetrical parts. Such workpieces can be completely measured in a single setup as features distributed around the circumference of the part can be precisely rotated into a position which is optimal for the multisensor measurement. The PC-DMIS measuring software takes the rotation of the workpiece coordinate system relative to the machine coordinate system into account. The Optiv Dual Rotary option allows the entire rotary axis to swivel on an additional axis so the sensors can reach geometries that are inclined to the longitudinal axis of the workpiece.

The tactile measurement of prismatic workpieces on a rotary table or the stacked rotary tables also offers improved efficiency through the rotating and swivelling movement, which makes complex geometries easily accessible with only a few simple styli configurations. This reduces the necessary probe changes as well as the number of axis movements within the measuring volume.

The new mechanical bearing rotary tables for the Optiv Performance 663/664 provide high-precision rotational accuracy. Two sizes are available, offering different maximum torques (2 Nm or 10 Nm) and normal centred load capacities (900 N or 1800 N). Depending on the version, self-centring three-jaw precision chucks for diameters between 2 mm and 125 mm are optionally available. With the Optiv Dual Rotary option, two rotary tables are combined to enable two-axis rotations.

“We have extended the range of applications for the Optiv Performance 663/664 with the automatic workpiece rotation within one measurement routine,” says Wolfram Fröhlich, Business Unit Director PL sCMM for the Vision Unit at Hexagon Manufacturing Intelligence. “With up to two additional rotary axes, our customers can make optimum use of the available measuring volume of the machine and perform complete multisensor measurements of complex components without re-clamping.”

Both CNC rotary tables and the CNC stacked rotary tables are available worldwide from today and can be ordered from local Hexagon Manufacturing Intelligence commercial operations and dealers.

A rotary table is a precision work positioning device used in metalworking. It enables the operator to drill or cut work at exact intervals around a fixed (usually horizontal or vertical) axis. Some rotary tables allow the use of index plates for indexing operations, and some can also be fitted with dividing plates that enable regular work positioning at divisions for which indexing plates are not available. A rotary fixture used in this fashion is more appropriately called a dividing head (indexing head).

The table shown is a manually operated type. Powered tables under the control of CNC machines are now available, and provide a fourth axis to CNC milling machines. Rotary tables are made with a solid base, which has provision for clamping onto another table or fixture. The actual table is a precision-machined disc to which the work piece is clamped (T slots are generally provided for this purpose). This disc can rotate freely, for indexing, or under the control of a worm (handwheel), with the worm wheel portion being made part of the actual table. High precision tables are driven by backlash compensating duplex worms.

The ratio between worm and table is generally 40:1, 72:1 or 90:1 but may be any ratio that can be easily divided exactly into 360°. This is for ease of use when indexing plates are available. A graduated dial and, often, a vernier scale enable the operator to position the table, and thus the work affixed to it with great accuracy.

Rotary tables are most commonly mounted "flat", with the table rotating around a vertical axis, in the same plane as the cutter of a vertical milling machine. An alternate setup is to mount the rotary table on its end (or mount it "flat" on a 90° angle plate), so that it rotates about a horizontal axis. In this configuration a tailstock can also be used, thus holding the workpiece "between centers."

With the table mounted on a secondary table, the workpiece is accurately centered on the rotary table"s axis, which in turn is centered on the cutting tool"s axis. All three axes are thus coaxial. From this point, the secondary table can be offset in either the X or Y direction to set the cutter the desired distance from the workpiece"s center. This allows concentric machining operations on the workpiece. Placing the workpiece eccentrically a set distance from the center permits more complex curves to be cut. As with other setups on a vertical mill, the milling operation can be either drilling a series of concentric, and possibly equidistant holes, or face or end milling either circular or semicircular shapes and contours.

To create large-diameter holes, via milling in a circular toolpath, on small milling machines that don"t have the power to drive large twist drills (>0.500"/>13 mm)

with the addition of a compound table on top of the rotary table, the user can move the center of rotation to anywhere on the part being cut. This enables an arc to be cut at any place on the part.

Additionally, if converted to stepper motor operation, with a CNC milling machine and a tailstock, a rotary table allows many parts to be made on a mill that otherwise would require a lathe.

Rotary tables have many applications, including being used in the manufacture and inspection process of important elements in aerospace, automation and scientific industries. The use of rotary tables stretches as far as the film and animation industry, being used to obtain accuracy and precision in filming and photography.