cnc rotary table with stepper motor factory

Sherline’s CNC driver box comes equipped with an A-axis output cable ready to drive a 4th rotary axis. This rotary table is all you need to turn your Sherline CNC mill into a 4-axis machine. Just plug the A-axis cable from the external driver box or the built-in driver box in your Sherline computer into the matching plug on the stepper motor. The EMC2 software is already set up to handle G-code for the A-axis, and numbers entered after the letter “A” in your code are interpreted in degrees.

The same end result can be obtained by ordering a CNC ready rotary table and a stepper motor and attaching the motor, but this single part number does the same thing, making it easier to order and saving you the trouble of installing the motor on the rotary table.

Sherline offers one of the finest small rotary tables on the market. It is available in manual or stepper motor drive modes. It can even be purchased with its one controller to be used as a programmable indexer.

can mount our chucks. This modification came about after requests from our laser engraving customers. The larger through hole allows for larger stock to be held. It also has a Nickel-Teflon plating on it because it was designed to be used in an every-day production environment. This gives the table a rust resistant surface that is hard and has added lubrication qualities.

Sherline�s rotary table offers an accurate, stable platform for rotary laser marking applications. Its compact size makes it a good fit in small enclosures. Visit our Video page to watch a Sherline CNC-ready rotary table in use in a laser marking application on round parts, illustrating the difference between trying to mark on a round part without rotating it vs. rotating it. Some of the videos are from Jimani Inc. Laser Marking Systems who use a high-speed motor to drive the table.

Sherline’s CNC driver box comes equipped with an A-axis output cable ready to drive a 4th rotary axis. This rotary table is all you need to turn your Sherline CNC mill into a 4-axis machine. Just plug the A-axis cable from the external driver box or the built-in driver box in your Sherline computer into the matching plug on the stepper motor. The EMC2 software is already set up to handle G-code for the A-axis, and numbers entered after the letter “A” in your code are interpreted in degrees.

The same end result can be obtained by ordering a CNC ready rotary table and a stepper motor and attaching the motor, but this single part number does the same thing, making it easier to order and saving you the trouble of installing the motor on the rotary table.

Control digital devices and make machinery more precise with a stepper motor from Alibaba.com"s wholesale equipment store. Our catalogue is the place to come when you need a replacement stepper motor rotary table or any other motor related products. You"ll find a huge array of wholesale motors, including step motors with high torque ratings that can offer incredibly precise control. Whether you"re constructing an astronomical telescope or a digital network for broadcasting, these motors will do the job.

Stepper motors are used in situations where devices need to be calibrated to extremely high levels of precision. They aren"t always the most powerful motors, but they do have very high torque levels, and this allows them to control devices in ways that other motors cannot. And they also tend to work well with digital devices due to their "step" mechanism. For instance, you can find step motors in many hard drives, handling millions of operations every minute. They have also become a go-to motor style for robotics installations. So you might need one for an advanced production line. When you need a stepper motor rotary table, finding the right motor is easy. Just search Alibaba.com"s catalogue and you"ll easily find what"s required.

Our stepper motor collection covers every base. Browse motors for use with mini computers like the Raspberry Pi or models designed for use with Arduino components. Look for permanent magnet motors, variable reluctance steppers, or hybrid syncronous steppers, and models with micro step, half step, and full step modes. Our listings include everything you need to control the most complex systems. So find a stepper motor rotary table and order what you need today. Everything can be handled with a couple of clicks, putting specialist stepper motor components within easy reach.

Sherline’s CNC driver box comes equipped with an A-axis output cable ready to drive a 4th rotary axis. The 8730 rotary table is all you need to turn your Sherline CNC mill into a 4-axis machine. Just plug the A-axis cable from the external 8760 driver box or the built-in driver box in your Sherline computer into the matching plug on the stepper motor. The EMC2 software is already set up to handle G-code for the A-axis, and numbers entered after the letter “A” in your code are interpreted in degrees.

The same end result can be obtained by ordering a 3700-CNC rotary table and a 67127 stepper motor and attaching the motor, but this single part number does the same thing, making it easier to order and saving you the trouble of installing the motor on the rotary table.

NOTE: We are stating the following weight limits for our rotary tables for continual use. Click on the Video tab above to see examples of different weights and uses for our rotary tables.

Motorized worm gear driven rotary tables provide high angular resolution (the worm gear ratio directly multiplies the motor output torque and motor angle resolution) and holding torque. PI offers precision motorized worm gear rotary tables with both stepper motors and closed-loop servo motors with encoder feedback. While open-loop stepper motors are often used for their lower cost and ease of control, closed loop servo motors with encoder feedback provide higher speed, higher accuracy, and repeatability. PI also provides closed-loop stepper motor rotary stages, combining the best of both worlds. PI stepper motor rotation stages are provided with stepper motor controllers featuring a micro stepping mode for higher performance. For single axis applications, a compact and very cost effective single axis stepper motor controller is available.

For the best performance and highest velocity, direct-drive rotary stages with torque motors are recommended (link to new Rotary Stage Page with Direct Drive Torque Motors).

I am wondering how it would work to mount a stepper motor or servo motor on the rotary table. What all would I need in order to make a laptop computer operate the rotary table?Sherline makes a very small rotary table that is just what I am looking for but it is tiny. I need something bigger and stronger. The sherline looks like you can program a certain number of divisions and then every time you hit the button it moves to the next location.

Well, depends on your skills. You need to be able to design and machine a simple mounting plate, connect up wires to printed circuit board screw terminals, run some software, etc. Your immediate application doesn"t require maximum performance. Steppers should be ok, and you won"t need more expensive motors, controllers, and lots of fine tuning. Just don"t try to push the speed limits unless you know what you are doing.

Step 1: measure the amount of force it takes to turn the wheel, so you know what size stepper you need. Put some load on the table, like a heavy vise and pull the edge of table with 50+lbs of force (1/4 horsepower, scale up as needed) to simulate machining forces (although in your immediate app, you probably won"t be machining and moving at the same time). Give yourself a safety factor. A double ended shaft is recommended, so you can mount a handwheel on back end for manual operation. For a small table like the sherline, most NEMA-23 motors should work. For a larger one, you may need higher torque NEMA-23, NEMA-34, or geared steppers.

Gearing adds backlash - not a big deal if you are moving in only one direction as a simple indexer but a problem if you are doing more sophisticated stuff. If you need a motor that draws more than about 3A, drivers get more expensive.

Step 2: physically mount motor to rotary table. On some tables, the shaft is supported on one end by a piece that bolts on. This provides convenient mounting. You may be able to machine a plate that has the original mounting holes, a bore for the bearing, and 4 holes for standoffs that match the stepper motor mounting holes. You will need a flex coupling. Bear in mind that the position of the shaft determines how well the gears mate and how much backlash there is. You may want slots for the mounting holes so you can slide the plate.

Step 3: stepper motor driver. These can be had easily on ebay and elsewhere. They usually have step and direction inputs. Should be able to handle your motor. There are some bare boards here if you can solder electronic circuits: http://www.pminmo.com/

Step 4: Power supply to match your motor driver. Most will let you use a voltage higher than the rated voltage of the motor. This gives much better performance. You can reduce the current rating of the power supply by roughly the ratio of the power supply voltage to the motor voltage. You may need up to twice as much because two windings may be energized at the same time. Power supplies can be had cheap on ebay. Wire to stepper motor driver board. Be careful NOT to ground the negative lead at the power supply (and don"t use a power supply that won"t let you float ground). Otherwise, the voltage drop accross the negative lead causes ground current loops which can be bad for your computer. Ground at the motor driver only.

Step 5: PC interface. If your laptop has a parallel port, all you need to do is connect ground, step, and direction. The latter two can be connected to D0 and D1 on the parallel port. You will configure the software to tell it what pins you used. Parallel ports are going the way of dodo birds. USB->Parallel adapters are not suitable. USB is a bit trickier, though there are some stepper controllers available: here is one: http://www.usbcnc.com/index_products.html. I have seen a cheaper one designed by someone here or on CNCzone that looked halfway decent but can"t find it at the moment. About EU$69, USB, PIC based, 3 axis, no source code, windoze software included. Looked adequate for what you are doing but not for my purposes:

EMC is free but requires you reboot the computer to run real time linux. TurboCNC is $60, requires you to reboot to dos. There is some more expensive stuff out there. If you have a USB or RS-232 controller that speaks g-code, then you can probably just open a terminal emulator to the controller and type g-codes. "G01 0.0", "G01 15.0", "G01 30.0". If you have any programming ability, you can just write a trivial program to do this. Bear in mind that Windoze, as well as normal non-real time linux, Mac OS X, and other desktop operating systems are lousy at real time applications. Thus, an external CNC controller can work better.

Leave yourself some room to expand. Put a motor on your X axis, for example, and now the computer can cut your gear with a little programming and you have a power feed.

Shop stepper motor rotary table online with free shipping and fast delivery. Stepper motor rotary table is suitable for cnc lathes, milling machines and engraving machines.

When it comes to powered rotary table, it is the rotary tables widely used in CNC machining center which responsible for precisely locating the parts in the commanded angle in order to perform multi-face machining at one time.

For starters, we need to know what a rotary table is. Rotary table is a high precision positioning device which is widely used in machining and metalworking. With the rotation, the operators can perform drilling, milling, cutting and other applications at exact intervals around the horizontal or vertical axis. To achieve the high accuracy and efficiency, many rotary tables can incorporate with index plates or dividing plates. With the help of additional components, the rotary tables can be used for indexing application or even position the work piece at divisions on the dividing plates.

When it comes to powered rotary table, it is the rotary tables widely used in CNC machining center which responsible for precisely locating the parts in the commanded angle in order to perform multi-face machining at one time. Originally, in a 3-axis CNC machining center, there are only X, Y, Z working axes. The X, Y, Z axis are the linear lathe axes. Operating along the XYZ planes, the Z axis is the important axis that is aligned with the main axis of the machines. On the same plane, the Y axis works in horizontal direction while the X axis is the vertical operation direction.

In typical machining centers that have the 4th axis, the 4th axis is the 180° rotation axis around the X axis. With a CNC motors, the motorized rotary tables can play the role as the 4th axis in the machining centers to enhance the flexibility of metalworking applications. The arrangement of involving powered rotary table in 3-axis machining center is popular for cam machining, helical grooves producing, blade machining and other unique profile machining. Powered rotary tables have a wide range of applications, for example, utilizing in both manufacturing and inspection stage of essential components in aerospace industry, automobile manufacturing and other scientific industries.

The vital elements of a powered rotary table include a supporting disc where the work pieces are clamped for machining, a solid base for clamping onto another larger table, machine, or machining center, the CNC controller and motor. A through hole is machined into the CNC rotary table to fit the Morse taper center or fixture.

The precision-machined disc is the rotating surface where the work piece is positioned and fixed firmly. T slots are the typical parts to help clamping the work pieces. The chuck is used to hold the work piece with a dial indicator to ensure the chuck and product are centered. After installing the chuck with bolts and T-nuts then checking if the work piece is centered, the operator can position the job on the table. The disc can spin freely under the instructions from CNC controller and motor. It is also the components which the indexing plate or dividing plate can mount with. When CNC controller and the CNC motor provide inputs, the rotation of the worm gear is activated and the mating gear mounted beneath the table surface begins to spin, either. The worm gears perform the precise rotations of the rotary table and every parts of the disc are critically calibrated in degrees.

The computer numerical controller transport programmed commands to activate the powered rotary tables. The commands are conveyed in CAD files, which refers to Computer Aided Design files, and provide sequential instructions to ensure the smooth operation. Eliminating the human power, CNC provides reliable and precise high performance positioning for further machining applications.

The size and type of the CNC motors can determine the routers precision, the efficiency and also the accuracy. Following is the basic introduction of two classes of motors used in CNC rotary tables, which are the stepper motors and the servo motors. Within these 2 classes, there are more subtypes.

Servo motors use closed looping variable circuit which continuously run for maintaining smooth motor function. The brushes on this type of CNC motors should be replaced after two thousand hours of operation. The encoders may need to be checked and replaced, too. Servo motors feature the efficiency in power consumption. They perform with about 90 percent of efficiency when giving light loads.

Stepper motors only require the wires that connected with the motor driver, having simpler setup. The only wearing part in this type of CNC motors is the bearing mounted on the motor, which slightly reduce the equipment life. Compared to servo type, stepper motors consume a large amount of power to provide the output, and much of them is converted to heat. Depending on the stepper driver, the stepper motors are often seventy percent efficient.