Machine centers are known for their high precision, high reliability, high efficiency, and ability to machine complex parts.
Yet, if the selection is not well thought out, you will not be able to exercise its benefits, and with the high cost of machining centers now days, you really want to guarantee your ROI (return on investment).
When wanting to select a China CNC machining, you should start with you product and based on you can select: The model; The CNC system; the machine tool accuracy.
The main feature specification
Start with the selection of the model and the selection of the CNC system, and then select the machine precision and main specifications.
We will illustrate these four aspects and help you understand what to look for when choosing your CNC machine.
Model selection
As we said before, start with your product. Study your product and the process of its production. Then, with the premise of meeting the processing requirements, choose the simplest equipment required for the job, which guarantees both the lower risk and price.
CNC system selection
When selecting a using CNC center, know that the same machine can be equipped with different CNC systems. Depending on these systems, the performance can vary and directly affect the pricing of the machine.
Now days, the types and specifications of CNC systems are extremely huge. Every company has a range of products in a variety of specifications.
When choosing your CNC system, you should look for: The performance versus price; The ease of use and maintenance The system’s service life.
You cannot pursue high-level, new systems based on reputation only. It should be based on the main performance of the machine, the system performance and price.
Precision selection
Single-axe positioning accuracy;
Single-axis repeat positioning accuracy;
Roundness of the test piece produced by simultaneous machining of above two-axis
The positioning accuracy and repeat positioning accuracy reflect the precision of each moving part of the axis. The single-axis positioning accuracy refers to the error range when positioning at any point within the stroke of the shaft, which reflects the machining accuracy of the machine tool. The repeat positioning accuracy reflects the positioning stability of the axis at any positioning point in the stroke, which is an indicator to measure if the shaft can work stably and reliably.
For those machines with higher positioning accuracy, you must also pay attention to whether the feed servo system adopts semi-closed loop or full closed loop mode, and to the accuracy and stability of the detecting components.
If the machine tool adopts a semi-closed-loop servo drive mode, the accuracy stability is affected by external factors.
In brief, with a big investment like purchasing a CNC machine, you should take all factors into account and take an experts opinion before making any step.
