Basically, a rotary table is described as a work positioning device that has been designed for use in metalwork. It does not just give precision, it enables the device operator to cut or drill work at fixed or accurate intervals around a horizontal and vertical axis (most of the time). In other words, it can be described as a device that has been designed to specifically make repetitive moves around a platform.
Others have described the rotary table as a device that indexes parts of an area to be worked on in angular increments. It is an integrated motion system which consists of mechanical and motor power transmission devices that come with encoders, controllers, and sensors.
Parameters Of Rotary Indexing Tables
There are a number of important parameters of rotary indexing tables and they include; the right or the needed resolution of the platform or application required accuracy and repeatability, as well as other mechanical parameters like the accepted level of hysteresis or backlash. In addition, one important parameter of a rotary indexing table is the leading torque, radial, axial, and moment load. These parameters are capable of impacting the size and type of indexer that is used in an application. Interestingly, rotary indexing tables have a number of use cases and applications.
These tables are application specific and have been designed in such a way that they meet the desired needs of a particular operation or even a set of operations.
Application Of Rotary Indexing Tables
As mentioned above, they have a number of use cases and applications in a wide range of industries. These tables are used in the aero industry to hold large weldments in aerospace. It is also used in the product manufacturing industry to conveniently position containers for the application of labels in consumer products. Additionally, in the medical field, it is used to effectively position medical components for the assembly process. If you take a closer look at the rotary indexing table, you will discover that it is capable of being used in almost all industries.
What You Should Consider When Choosing A Rotary Indexing Table For An Operation
Unknown to most people, there is a wide range of factors that should be considered when choosing a rotary indexing table for operation. While it may seem easy to rotate a component and stop specifically at precise angles theoretically, in practice, it is quite difficult to build and design machines capable of rotating and stopping periodically and precisely. With this in mind, there are a number of factors that should be considered;
- “When rotating mass is determining inertia’s mass moment”. While this is most of the times overlooked, it happens to be a very important factor. This is simply because once the mass moment of the body of a property is known, the rotary index table can then be sized accurately and precisely to attain whatever speed is needed.
- The size of the property or piece being moved is the second factor that should be considered when choosing a rotary indexing table. Is the piece to be moved heavy or large? When it comes to choosing a rotary indexing table, size happens to be a constraint as you would be needing a rotary index table that is as large as the piece to be moved. To ensure that a rotary index table performs at an optimal level and not cause internal damage to the operator or piece to be moved, it would need to be able to accelerate as well as decelerate at the proper speed. Size should be taken into consideration when selecting a rotary index table for that operation.
- Precision is the third factor that you need to take into consideration. Precision is of great importance if the desired outcome is to be achieved. An ideal rotary index table should be able to stop periodically in a precise manner.
While we have discussed the three main factors that should be considered when choosing a rotary index table, there are other things you should consider as well;
- An ideal rotary Index table should be accurate and precise
- Deceleration and acceleration
- The mass moment of the property or inertia.