Cartesian System And The XYZ Axis
Basically, the Cartesian system is made up of about two or three axes, the X, Y or the X-Y-Z. Most of the time, they incorporate an end effector with a component for orienting the workload. One of the outstanding features is that when the Cartesian system is used, the workload is cantilevered or anchored between the outer axis which is often times the X and Y axis. This is quite different from the gantry system where the workload is mounted on the Y-axis.
Currently, cartesian systems are being used in a number of applications with the stroke on each axis about one meter or less. Some of the common use of this system in industries include; the assembly process, dispensing process, picking and placing of heavy parts. They’ve been made available in seemingly endless configurations and have been customized to meet the exact parameters. Prior to this time, cartesian systems or robots have been designed by end-users and integrators, but things have changed now as there are pre-engineered systems that are capable of reducing significantly the assembly, engineering, as well as start-up time when compared to the previous systems.
What You Should Consider When Choosing A Cartesian System
When it comes to selecting a cartesian system or robot, there are a number of factors that should be taken into consideration. These factors will ensure that you get the best system or robot for your application.
- 1. Orientation happens to be the first factor that you would need to take into consideration when choosing a cartesian system. The application often times will determine the orientation with the focus being on whether the parts would need to be handled or if there is a need for the process to take place from below or above. Additionally, it is important to ensure that the system or robot does not interfere with other moving parts as this may be hazardous. Luckily, these cartesian systems have been designed in X-Y-Z and X-Y configurations to meet the space and application requirements.
- Stroke, load, and speed; these are the basic parameters on which each cartesian robot is selected. For an application to be moved to a specific part, a certain load is required. However, they are independent and as the load increases, the maximum speed decreases. Also, if the outer actuator is anchored, strokes will be limited by the load. These things mentioned make sizing a cartesian robot a difficult task.
When selecting a cartesian robot, it is advised that you choose one built by manufacturers that provide tables and charts that offer insight into the maximum load, speed capabilities, and stroke limit. In addition, you should pay attention to find out if the load, speed, and stroke specifications can be achieved at a time.
- Accuracy and precision; basically, linear actuators happen to be the basis of the accuracy and precision of cartesian robots. The features of the linear actuator will determine its accuracy and precision. Some of the features to look out for include; whether it comes with a steel or aluminum base, its drive mechanism belt, linear motor, pneumatic, etc. Additionally, how these actuators are mounted and fastened has a part to play in its accuracy. Bear in mind that a cartesian robot that is pinned and precision-aligned during assembly will have a greater accuracy level than one that is not pinned. Also, it would be easier and better when it comes to maintaining the accuracy level over a period of time.
Application Of Cartesian Robots
The cartesian robot or system is applied in the lathes production line for loading and unloading of parts continuously. These systems are used to perform the three-axis – X-Y-Z linear movements at a high speed. Additionally, they are capable of handling heavy loads as well as pick and place parts with a higher accuracy and precision level.
There are other uses of these robots and according to predictions, in the years to come, they will be deployed to almost all industries. They happen to have a higher precision and accuracy level making them ideal for use in almost all industries. They are capable of conveying heavy parts with so much efficiency and accuracy.