Three Important Quality Standard For Parts CNC Machining
Currently, almost all of metal and plastic parts CNC machining or assemble, we have to know what’s their quality standard, which included its tolerance, accuracy and precision itself, in order to make your products better, so we have to discuss these before quotation, rapid prototype or low-volume manufacturing.
Furthermore, when customer sends us a drawing for quotation, if there is no clear tolerance requirement in the drawing, we will turn to the customer for it. Since it is really an important factor to make a exact quotation. Different quality standard, the cost is completely different, this is also why our sales team always ask our customers provide us before quotation.
Below will share three quality standard to your parts CNC machining
Parts Tolerance (what’s the standard for part, or function, whether you will assemble this part)
Why the tolerance is so important? Generally speaking, tolerance is the permissible limits of variation in an object. Out of tolerance, the customer will reject the product, since it will have problem when the parts are assembled to other parts. They will not match with each other. Another reason is the high or low tolerance will affect the cost. The higher the tolerance is, the higher the cost is. The last reason is for some really high tolerance part, we have to judge whether our current machines can produce it or not. It is up to the accuracy and precision of the machine itself.
Machine Accuracy ( This will ask our machine accuracy high standard, need to adjust them every year)
Now the CNC machine market is very brisk. But as the developing of CNC technology, the machine is updating quickly too. So there are many types of CNC machines. It needs us to pay a lot of effort to study which one is the best one for our own production. If most of your customers require a very high tolerance, then you have to choose a CNC machine with high accuracy. What is the accuracy of a CNC machine? It means the degree to which the result of a measurement, calculation, or specification conforms to the correct value or a standard. But now it seems different areas have different accuracy standard. So when a customer especially require a high accuracy, it is necessary to negotiate with him/her for the standard. Except the accuracy, the precision is also very important.
Precision (Both product and machine asked more precision)
Precision and accuracy are like twins. When we talk about precision, we will think of accuracy. When customer requires high precision, also they require high accuracy. Even in some cases, we think the precision is the accuracy. But strictly speaking, they have difference. Then what is the precision? It is the repeatability of successive measurements under the same conditions. Usually, we will make whole parts CNC machining of precision high standard same our drawings or exceed it, in order to meet customers’s need,
One of our customers is from medical industry. All the parts are required in high tolerance. That is to say, the CNC machine must have high accuracy and precision, and then we can meet his requirement. Tolerance, accuracy, and precision are three key factors of quality standard to your parts CNC machining. We have to study them well and give better and better service to all of our customers.
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