Rotary indexing tables have been in use for a long time. To understand what exactly a rotary indexing table is, it is good to understand what rotary indexing is all about. This simply refers to procedures where displacement in an angular placement is repeated in a form of the machine cycle. The final result of this is that a motionless dwell is followed.
Therefore, a rotary indexing table can be defined as a table which has been particularly designed to move in a repeated manner around a platform. In other words, this means that the table would move in a particular pattern repeatedly when it is mounted on a platform. So basically, a rotary indexing table can be said to be devices which works part in operations through the art of indexing.
The rotary indexing table can also be referred to as a motion system that is integrated. The rotary indexing system is made up of various motors and encoders, which comes with a power transmission which can be operated mechanically. It would also come with controllers and sensors.
The rotary tables also make use of cam indexers. These cam indexers are known or tied to the use of rotary tables for a long time. One reason for this tie is because of their compatibility when it comes to several applications which would find it more preferable to index at a particular angle majority of the time.
To be able to place the load just right, the cam indexers would make use of other things such as motion controls as was earlier mentioned. It is also important to note that with the cam indexers, there are two from or methods of operating it. The first method would refer to what is usually called the demand cycle. In other words, this means that the camshaft would make only one revolution. This one resolution would mean that the output is moved by one position every single time and nothing more.
To achieve this, a sensor package containing a camshaft can be used. This sensor would help you to detect the location of the camshaft. It would allow you to use a VFD in a bid to control when the camshaft goes on or when it goes off.
Another method would be a continuous method. With this method, the camshaft which is being used would be able to keep spinning at a consistent speed. It is also important to note that the dwell time which is involved and the indexing would be under the complete control of the motion profile of the cam.
There are many benefits of using the continuous method. One of them is that it is perfect when it is to be used in connection with other equipment which would also be synchronized mechanically.
If you are using the continuous method, it is important to note that the indexer on continuous mode would have the ability to keep spinning at very rates. It is believed to run 1000 cpm and even more.
These indexers are known to be relatively cheap and can be used to set several angles as you would need. They are also seen to be capable of moving with perfect aligned precision. There are some factors or parameters which would need to be considered for a rotary indexing table. Here are some of these parameters;
- One of the parameters would be getting the right resolution for the application
- Another would surely be getting just the right amount of time which the process should be repeated and also just how accurate it has to be
- There are other parameters which you would have to consider that are mechanical in nature. These would include hysteresis and even backlash.
- Axial, moment and even radial loans all make up the loading parameter, which would play a crucial role.
If you would want to use the rotary indexing table properly, it is important that you understand certain application information. Some of them would include the inertia law, the indexing time, angle, and other things. The dwelling time would also prove to be a very good asset to have. Using the rotary indexing table would prove to be a smart decision for your business or factory.