cnc rotary table manufacturers free sample

Rotary table in market mainly includes 4 kinds of mechanism that is worm gear, roller cam, DD driver and harmonic structure. The following is the introduction:

1. worm gear: it’s one of  the most popular structrue in NC rotary table  because of its irreversibility and costs.The worm is generally made of bronze, but the wear resistance is poor. In order to improve the service life, some manufacturers use the alloy steel.

3.DD motor: it’s the most efficient rotary table with the highest precision. It has the highest precision because it has no mechanical structure, which is directly driven by motor , no reducer. It has high technical difficulty and high price. It is generally used for five axis machine tools.

Sherline has taken their accurate and reliable 4″ rotary table into the 21st century with the addition of Computer Numeric Control. Clock-makers or anyone with a need to cut gears or other complicated radially symmetrical patterns will find this accessory takes all the headaches out of repetitive indexing operations.

The rotary table comes with clamps and T-nuts for attaching it to the T-slots of a Sherline mill table. In addition, there are two options available for mounting the table in the vertical position or at other angles:

Right-Angle Attachment—This plate holds the table in the vertical position with a center height of 2.7″. A right-angle tailstock is also available to support long stock held on center in the rotary table.

Tilting-Angle Table—This table holds the rotary table and can be fixed at any angle from 0° to 90°. In the 90° position, the rotary table center is also at the 2.7″ height, which allows the right-angle tailstock to be used with it.

After entering the number of steps per revolution (or the number of degrees per step) on a simple numeric keypad, the table advances quickly and precisely to the next position at the touch of a single advance key. If an error is made, previous positions can be accurately recalled by hitting another button. Basic resolution is 28,800 steps per revolution, ±0.006° per step. This allows the accurate machining of items like gears with odd numbers of teeth. Computations are made internally to a high degree of accuracy to avoid cumulative errors.

Sherline has taken its P/N 3700 manual 4″ rotary table and applied a stepper motor mount with dampened coupling in place of the handwheel. The mount accepts a NEMA #23 frame-size stepper motor for CNC control. This allows the table to be used as a 4th axis with CNC systems that have the capability to drive a rotary axis.

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

A CNC rotary table is the precision positioning accessory that can provide a reliable 4th axis or even 5th axis for modern machining centers. Utilizing a computer-controlled rotary table can turn the original 3-axis machine tools into 5-axis CNC machines, expanding the accuracy as well as decreasing the costs while performing complex machining operations at one time.

A CNC rotary table is the precision positioning accessory that can provide reliable 4 or even 5 axis cutting operation capabilities for modern machining centers. Utilizing it can turn the original 3-axis machine tools into 5-axis CNC machines, expanding the accuracy as well as decreasing the costs while performing complex machining operations.

Rotary tables typically have rigid frames and coatings, and also excellent torque capacity, which makes the small device flexible and effective for a wide variety of turning, milling, drilling, and more metalworking operations. The easy setup and seamless interface allow the operators to easily add the rotary table to fit their 4-axis or 5-axis applications. .

The working principle is similar to the basic rotary tables, which is to support the workpiece by accurately rotating the workpieces on the axis in order to locate the parts for high precision tooling. Under rapid rotation, which is driven by CNC instructions, the cutting tools of larger machine tools or machining centers can remove the material and add the feature to the products at exact intervals. On rotary tables, there are vertical and horizontal axes for various tools to perform these high-performance metalworks. To enhance the accuracy and flexibility, there are models that employ additional dividing plates and come with additonal material handling mechanisms and features.

Since 4-axis and 5-axis machining is increasingly popular today, adding the CNC rotary table as the 4th axis is an ideal solution to easily open up more complex machining options at a lower cost. Due to the arrangement, they are widely also called the 4th or 5th axis or tilt rotary. The 4th axis, which is the rotational operational direction, is added to the original three linear axes which are known as X-axis, Y-axis, Z-axis. In some cases, there are two rotational axes add to the original 3-axis machining center, achieving utmost accuracy as well as effective multiple face cutting to reach the difficult area on the surface. Rotary tables are usually mounted parallel to the ground or the bed, with the platter rotating around the vertical axis, for example with the most common vertical milling machine combination. Sometimes the machining application requires an alternative setup with the table mountet on its end so that it rotates around the horizontlal axis. Often, a tailstock is used in this configuration. Virtually all models today come with a clamping kit to mount it onto the bed of your machine tool.

The function of the high precision rotary table is also to rotate the workpiece so the cutting tool can create the contour we desired out of the workpiece. However, a rotary table with higher precision has the ability to achieve great accuracy just as its name implies. There is also a major misconception between the resolution and the accuracy.

A common example is that if a digital readout displays to four decimal places, then the high precision rotary table must also be capable of achieving the accuracy to that same value. Even though for higher accuracy to be achieved, the resolution has to also be high, but there is no guarantee that the accuracy is going to be high. The accuracy is the concept which is the difference between the actual position and the position measured by a reference measurement device. The feedback mechanism such as the rotary encoder, and the drive mechanism can influence the accuracy of the advanced rotary table.

A CNC rotary table can provide great rigidity for stable machining operations. It consists of the worktable where the metal parts are held, the rigid bearing that withstands the forces and loads during the rotation, the solid base which is used for attaching the rotary table to the machining center or other equipment, the motor, and the CNC system.

The worktable is the tooling surface where the workpieces are machined after accurate positioning. The worm gearing is the core mechanism of the table, which mesh with the steel worm which is submerged in the lubricants. Both the rigid bearings and the worm gears have large diameters. Excellent concentricity is the key to smooth operation, durability, and most importantly, accuracy. Driven by a computer and electric motor, the worktable can position the materials at exact intervals. For more flexible or critical operations, dividing plates can be added to this component.

A CNC system regulates the simultaneous 4-axis motion of the rotary table. The instructions are programmed and transmitted via CAD software, reducing the time for adjustment and monitoring by human workers.

There are currently several different types and models available in the industries. Each of them possess its own traits and abilities. Let us take a look at the most common ones other than standard three axis tables

The 4 axis CNC rotary table will process the workpieces by holding them in the same position while the cutting tool performs along the XYZ plane to trim away the unwanted material. In general, a 4 axis model is very versatile equipment that can be used for several different industrial processes such as engraving curved surfaces, continuous cutting, and intermittent cutting. Besides, people can also add other devices such as cam machining, blade machining, and helical grooves to the 4 axes rotary table. Such a feature is simply impossible to achieve with the machining center which has only 3 axes.

Besides the 4 axis ones, there are also 5 axis models. They have the ability to allow the workpiece to be processed automatically from five sides at one time. people usually utilized the 5 axes rotary table in the industries such as the automobile, the aerospace, and the boating industries. The reason that the 5 axes rotary table is commonly used in heavy industries is that the 5 axis machining is an important technique to be used when the components need better intricacy and quick precision. All of these have more than three axes are called the multi-axis rotary table.

The installation method of the precision rotary table can be horizontal, vertical or inverted. When installed horizontally, the workbench surface is in a flat, vertical and horizontal position. When installed vertically, a rotary table is installed so that the surface of it can run up and down. In the reverse layout, itcan be rotated upside down in a horizontal position. The location of the drive of the rotary table can depend on the mount. The drive can be placed on the back, below, on the top or on the side.

When mounted horizontally, the spinning table top drive is positioned above the table floor. When the rotary table is horizontally placed, the side-mounted drive is located on the edge of the table board. The driving mechanism of the rotary table may be manual, electrical, pneumatic, hydraulic or non-driven. For manual revolving workbenches, release the workbenches and manually spin the workbenches with the crank.

Since the metalwork is driven by software, the preferred frameworks can be programmed and adapted by the rotary table. Saving both the cost and the room makes themis the ideal solution for potential users who don’t want to install larger equipment and new machines which may take up a great room for a wide variety of machining applications.

Another benefit is the utmost movements can be completed precisiely and faster. There are more favorable positions, operation angles as well as accessible machining that can be achieved through the technology. The complex operations are suitable for blade, helical grooves production, and other applications required to add complex features or require critical inspection in machining processes like the manufacturing of aerospace, automotive parts, and scientific equipment.

Addding a rotational table saves time because the extra finishing jobs or other sub-operations can also be performed at one time in the machining center.

A rotary table can be used in many applications including manufacturing, inspection, and assembly. Indicators are used, for example, for assembly, manufacturing, and bottling equipment. They typically use a single item in workspaces or move relatively small layouts of items around stations for sequential work or assembly.

In automated assembly machines, the rotary tables implementation is widespread, and choosing the right mechanism is important for both improving efficiency and reducing the cost of this vital component. This guide discusses two common devices for rotating indexing and offers guidance on the right range. There are several ways to get mass mobilization when it comes to the development of rotary indexing tables. Regardless of whether the load or load in centuries of thousands of kgm2 is incredibly light. When choosing a robust rotary index solution that will match or meet your standards, there are several factors to take into account when spinning, elevating, or pushing.

When determining the influencing factors on the postitioning accuracy, the first thing to look at is the mechanical properties of the table itself. A rotary table contains six degrees of freedom. Each of these movements increases the total risk of positioning errors. Usually, a rotary table is driven by a worm gear, which is connected to the motor through a rotary encoder on the back. The position of the table can be determined by the number of pulses transmitted from the encoder to the control device.

The four main sources of error due to the semi-closed position loop are geometric errors, thermal deformation, elasticity, and wear. The sum of these errors is called angular positioning error. To greatly reduce the angular positioning error, the ideal position for installing the angle encoder is on the rotating shaft under test. The angle encoder is installed under the rotary table, and the rotary encoder is installed under the rear motor, the position loop is now considered a closed-loop system.

In the actual test, by selecting specific components, motion index drive, servo rotary indexer, the measurement accuracy is as high as 5-6 microns. These are not the results approved by Motion Index Drives, but the results of customer certification. When starting and stopping large amounts of data, it is important to know how fast it takes to stop the application with large amounts of data.

Backlash in the positioning process is a big issue – when it comes to the beginning and stopping volumes, it"s crucial to know how quickly you need to avoid the mass of your rotary indexing table applications. In a less rigid system or where there is an increased backlash, quicker start-ups and stops can cause a lot of control issues. When shifting a mass, whether rotary or linear, starting and stopping in a system with several minutes of backlash arc will create a lot of back-and-forth motion within the gearing system. The effect is a power that can be difficult and probably hard to quantify. In comparison, as the gear head is used for rotational applications, the more the mass is from the axis of rotation, the further the backlash is magnified.

The backlash may not be a concern in systems where deceleration times are incredibly long. In the case of cam indexers, there is " Zero Backlash." The cam indexer and rotary table dynamics give an incredibly rigid, highly regulated framework. A modern cam indexer system is capable of withstanding short cycle times with stop times in milliseconds.

So you want to get the smart manufacturing going but are not sure of what to look for in rotary tables. The information provided in this section may be able to help. The primary factor is to determine the mass snapshot of inactivity. This is often overlooked when measuring a rotary table for the machine.

Another significant factor is the size of the workpiece being rotated, including how big it is and how substantial it is. You want your rotary tables to be large enough to handle enormous pieces. This is where tilling rotary tables may become handy so that the pieces can be handled without causing interior harm. They allow the quickening and decelerating of machining at appropriate rates.

The last factor is accuracy, the applications for which, for instance, pivoting a gigantic part to allow welding highlights on it where the individual stop positions can be genuinely free. On an additional note, when choosing direct drive rotary tables, factors that you should consider when selecting a rotary table for your CNC machinery include accuracy, backlash, mass moment of inertia, acceleration and deceleration, speed, and environment.

Cam indexers are an omnipresent tool used for several decades for rotary indexing tables. They are suitable for applications that often index the same angle and need a high degree of accuracy at a relatively low cost. To place the load, a cam indexer uses a mechanical cam. A math curve is pushed onto the cam and provides incredibly smooth and repeatable movement.

Another popular alternative is a fully programmable rotary index table. A rotary table is advantageous in two different situations. Firstly, a versatile movement pattern is important. An example is if two components are running on one computer, each of which requires different index patterns. For incredibly fast placement accompanied by a long period, another condition that matches the servo pointer is. The need to accelerate the camshaft while the cam indexing mechanism was operating before starting the output movement reduced the on-demand cam indexer. Acceleration of the camshaft is possible, but there is a delay before the movement begins. There are realistic restrictions.

With an indexing table, the output rotates as soon as the servo starts moving. This is not difficult for a continuous cam indexer or a zero-backlash servo indexer, but it can also be difficult for an on-demand cam indexer. For applications with high-speed servo indexing, smooth movements are crucial. A zero-backlash preloaded reducer can achieve this. The ideal alternative for correct positioning with high dynamic response would be the zero-backlash reel drive system.

Application parameters, like a moment of inertia, indexing angle, indexing period, and residence time, are required for each indexer style. The rotary indexing table for the application should also be sized correctly by a reputable manufacturer.

The robust geared rotary tables of the 500 series are extremely flexible to use and, thanks to the combiFLEX® modular system, can be converted or extended at any time to meet new machining tasks. The rotary tables are not only suitable for positioning operation, but can also be used for short simultaneous machining operations. The preloaded gear and the powerful bearings allow high long-term accuracies as well as large spindle loads. The maximum clamping force of up to 7,000 Nm leaves hardly anything to be desired.

The TR160 5 Axis Rotary Tables, manufactured by Haas, consist of dual axis Trunnion rotary table that is capable of tilting up to 160 mm. It also has a scale assessment ...

The TR210 is HAAS"S rotary table developed and configured to be integrated with HAAS"S mills 4th and 5th axis drivers to provide complete and optimum operation. It has a diameter of 210 mm made from trunnion ...

... space with high load capacity. The individual rotary tables are equipped with Harmonic Drive units, which ensure high moment load capacities and high concentricity and axial runout accuracies.

... accumulation turntables are made from the highest quality stainless steel and can be supplied in numerous sizes. They are utilized for the collection of filled bags, bottles and packages and can be added to an existing ...

The new CNC Rotary Table from GANRO has got higher speed and higher clamping torque. Thus making it suitable for machining complex components like turbine blades, when used ...

This is the smallest CNC Rotary Table manufactured by Nikken Kosaksuho in Osaka, Japan. With pneumatic clamping this rotary table is used by many on ...

... high-performance and flexible series from Peiseler. An extremely modern design with a good price characterises these NC rotary tables. The basis for this successful design is the complete ...

... Drive Rotary Table is a kind of rotary table used to the continuous operation which is several times more agile and accurate than conventional face gear or rack and pinion ...

CNC rotary tables of the ETS series are our solution for your 4th axis. The ETS models are equipped with a spindle holder according to ISO 702-1. Interchangeable discs for all common ...

Directly driven Motor Power Company"s rotary tables, provide versatile applications due to their backlash free structure. If necessary a compact servo system with high torque and high accuracy, SKA Rotary ...

... combination case of Large Aperture Rotary Table with planetary reducer with model number GSN200M-50K-SV which has table size 200mm gear ratio 1:50 for servo motor. GIGAGER provides combination ...

Some are confused by thinking that a table with control unit should be called an indexer, it is in fact exactly the same as a rotary table, it will do all the same things in the same way, it is simply controlled from outside of the machine cabinet, but is connected to it by an interface cable.

The largest B type model from Nikken with motor mounted to the rear, with higher gear ratio over earlier models increases speed over the vertically mounted motor version type CNC-400V. This unit also has a hydraulic clamping system. The unit has a 130mm spindle nose location with a location depth of 12mm with 105mm directly through the table and a has a centre height of 230mm in the vertical position. This device in the first instance is a vertical mount only device with options for a side mount motor, version which can be found under product code CNC-400V. An excellent carrying capacity of 250kg vertically unsupported and 500kg between centres with a standard tailstock with rotation speeds up to 22. 2rpm dependent on motor selection. (example given is with a 2000rpm motor)Net weight of this device is around 280kgThe Nikken CNC-401B rotary table is offered without motor and can be prepared to suit any interface at additional cost (see our interface listings for details and costs for “external interface”) (motor, switch, cable and connector requirements if you already have a “4th axis interface” in the machine) and machine interface costs (if you do not have the additional axis fitted). Motor is mounted to the rear via the right hand side on this device and is designed to avoid restriction to the Y axis capability and with a large bore available should you want to machine long bar components that need to be mounted through the centre. Please remember however, that being a back mount device the centre bore is restricted to passing through only the depth of the casting (240mm)This range of Nikken devices have Tungsten carbide worm shafts and hardened wheels which can mean less backlash adjustment required over a conventional brass/bronze standard gear.

In the market for a rotary table? The checklist of requirements starts with speed, accuracy and rigidity. Will it be used for contour machining? Do you need high-speed indexing for high-volume parts? What features and capabilities will help in the short and long term within the industries your company serves? CTE spoke with multiple rotary table manufacturers to discuss market trends, product innovations and add-ons that can improve overall machine tool performance.

In addition to a standard rotary table, many manufacturers require additional system features to meet the special machining requirements necessary in production facilities, according to Randy Conley, rotary table product manager at CNC Engineering Inc., Enfield, Conn. “Today’s rotary table customers typically look for a turnkey package that includes an additional axis interface, control options, rotary table hardware, installation, training and a complete documentation process. We also have to offer accessories like workholding fixtures, tailstocks, risers and hydraulic power units,” he said.

Off-the-shelf rotary tables are not always enough as customers seek equipment made specifically for their individual machining applications and the accessories. “For example, the application may require an outboard support spindle and a trunnion plate. A subplate or riser may be required. These parts would all be designed based on a particular manufacturing process for a particular machine,” Conley said.

CNC Engineering’s custom rotary table comes with a single PVC cable with a waterproof connector that can be connected or disconnected in a few seconds with a half turn. This cable has proven to be highly durable and remains flexible after years of use. Image courtesy CNC Engineering.

Conley said small improvements through the years have been the norm for rotary tables. “Most commonly, that has meant higher speeds and greater clamping torque. Many rotary table manufacturers offer worm wheel models that are able to run at 100 rpm or more, within a limited-duty cycle. Pneumatic clamping torque is often in the range now that could only be provided with a hydraulic clamping system just a couple of years ago,” he added.

Many manufacturers offer direct-drive rotary tables that eliminate the worm gear (see chart on page 66). “These tables can offer higher speeds than the traditional gear drive tables but, depending on the application, the drive torque may be lower. Furthermore, users may find it necessary to retune the servo drive for different applications to maintain optimal performance and stability,” Conley added.

“These direct-drive rotary tables specialize in eliminating backlash and can provide a stiff mechanical system for highly dynamic applications,” said Gregory Kane, marketing manager at IntelLiDrives Inc., Philadelphia. “Integrated with precision bearings and ring encoders, these tables provide high performance for indexing applications compared to other mechanical transmission rotary systems.”

Today’s rotary table users seek products that are accurate, efficient and easy to use, according to Frank Cerrito, general manager at Koma Precision Inc., East Windsor, Conn. “Our customers are looking for automatic fixturing to increase production and reduce errors, for example. They’re asking for higher speeds, higher accuracy and less backlash.”

These tables are being purchased for old and new machine tools, according to Conley. “Often our customers would like to be able to use an older rotary table on a new machine, as well as an older machine. Depending on the control vintages, we can often accommodate that need,” he added.

The Weiss rotary indexing ring has a large central opening to allow a customer to position all tooling and cables internally. Image courtesy Weiss North America.

Additional considerations play a part in choosing the right rotary table. This includes everything from number of axes, position requirements, faceplate size, motor location and energy requirements. “A customer may need a low-profile rotary table that reduces rotor inertia, improves start/stop behavior and enhances velocity control compared to conventional rotary systems,” Kane said. “This is due to the lightweight, direct-drive motor, resulting in precise bidirectional speed and position control, which is critical for high-speed motion contouring.”

Weiss North America Inc. says its index tables are sized properly so the use of an overload clutch is not needed in a jam-up situation. Overload clutches increase the maintenance cost of the table, according to John Treter, the Willoughby, Ohio, company’s product sales manager.

“Our tables are also filled with oil at the factory and will never need to be changed,” Treter said. “Because of these two differences, Weiss is a maintenance-free solution. We also manufacture risers, tool and stationary plates and machine bases. This saves our customers the hassle of purchasing multiple components from multiple vendors.”

The size of the through-hole is an additional factor. “A table with a large center hole allows [running] routing cables and pressure/vacuum lines through the aperture, placing test objects into the aperture, and inserting work tools and installing slip rings,” Kane said.

“Sometimes there may not be a pre-engineered solution for keeping a rotary table connected to the control throughout a pallet change,” Conley continued. “Designing and building a system for a particular machine model is often more work than a customer wants to take on. CNC Engineering has developed several types of cable management systems. If we’re dealing with a new model, we typically customize one of our existing systems to adapt it to a new machine configuration.”

Weiss North America introduced the first rotary indexing ring, which features a large central opening. “This allows the customer to internally position all tooling, cables, etc. and to work from the inside out, saving sought-after floor space,” Treter said. “From there, we moved to servo mechanical, offering another option utilizing the same design yet incorporating the flexibility of servo technology.”

Remote diagnostics is another area gaining momentum in the industry, according to Kane. More manufacturers are beginning to look at monitoring equipment that can help prevent production downtime and eliminate costly repairs. These capabilities can be performed over the Ethernet or on mobile devices. With the release of Weiss Application Software 2 early this year, a remote diagnostic portal for a Weiss technician has been added. “This helps ensure a quick fix for the customer if something were to happen,” Treter said. “It is very simple to email a Weiss technician the program parameters to be diagnosed.”

Koma Precision, which distributes Tsudakoma rotary tables, offers a detailed comparison chart (www.komaprecision.com) for those interested in some of the advantages and disadvantages of a worm wheel vs. a direct-drive system. Here are some of the differences that distinguish the rotary tables from one another.

One thing that is sorta misleading about the CNC tables unless you"re seen one first hand is just how big they are. I"ve got a Tsudakoma THNC-301, which is a 320mm (12"+) table thats rotary powered and manually tiltable from horizontal to a bit past vertical. It weighs somewhere between 400 and 450 lbs, and I guess the new cost now is somewhere north of $16,000. They have positioning accuracy within a few arc seconds, and are capable of holding accuracies like this with a part that weighs a couple hundred pounds and cutting forces that can generate several hundred ft-lbs of torque.

Pricewise, assuming my 16K current estimate is accurate, that would work out to a bit less than $40/lb, because it definitely weighs over 400#. For comparison, a 10" Kitagawa power chuck for a lathe retails now for about $4000, and although I"ve never weighed one, I guess they weigh less than a hundred lbs from picking one up a "few" times. So that puts the chuck at over $40/lb. If you ever have cause to take one of these chucks apart, they are surprisingly simple. They"re accurate and repeatable, and everything is hardened and ground, but they"re still simple, especially when compared to a rotary table. A good sized collet chuck from Royal to fit an A-8 spindle nose on a lathe weighs barely over 40 lbs and costs close to $2500. Once again, its all hardened and ground, but this is the price of a pullback type chuck which is just one single piece of steel with no moving parts whatsoever, yet it sells for over $60/lb. When you compare the rotary tables and their size and complexity to other machine tool parts of similar complexity and quality, the price begins to look not so far out of line, even though its still not cheap by a long shot.

Now a day’s machining of component within single setup is more important concept for manufacturing any product. The objective of this paper is to give a design of CNC rotary table, this paper discuss design and analysis which include the finite element analysis of pallet with the structural static and modal behavior, The work focuses on design of rotary table used to support and hold components weighing up to 815 kg for machining, The rotary table should be designed with positional accuracy of…Expand