Three Kinds of Precision Description of CNC Centering Machine

Three kinds of precision description of CNC centering machine

In the process of CNC centering machine, centering machine processing accuracy has been further guaranteed. Generally speaking, in the process of using CNC centering machine, the processing diameter is relatively small, zui large processing diameter of only 38 mm, the continuous development of technology makes centering machine in precision shaft processing has greater advantages. For enterprises, the use of CNC centering machine can effectively reduce labor costs, to reduce the production of defective products have an important impact and significance.

CNC centering machine accuracy is mainly divided into the following types of different types, respectively: static accuracy, positioning accuracy and dynamic accuracy, let's understand together.

1, static accuracy: comprehensive reflection of the key components of the machine tool after assembly of the integrated geometric shape error. Static precision including geometric accuracy and positioning of the axis screw and clearance, dynamic precision for the product of continuous processing of the stability of fluctuations in the detection of testing tools for the precision of the nanometer level, each geometric accuracy of the specific testing methods and standards are in accordance with the precision of the machine tool factory testing project requirements for testing. The static accuracy of the good and bad directly affects the normal use of machine tool CNC functions and performance. Therefore, the accuracy test for the initial use of CNC centrifugal machine tools and maintenance adjustments to restore the technical indicators of the machine tool is very important.  

2, dynamic accuracy: a comprehensive accuracy, which not only reflects the geometric accuracy of the machine tool and machining stability, but also includes the specimen materials, fixtures, ambient temperature, CNC machine tool performance, as well as cutting conditions and other factors caused by the error and measurement error. In order to reflect the true accuracy of the machine tool, to try to exclude the influence of other factors.

3, positioning accuracy: is the index-controlled centering machine axes in the CNC device under the control of the movement of the positional accuracy that can be achieved. Positioning accuracy can also be understood as the movement accuracy of the machine tool. Ordinary machine tools are manually fed, positioning accuracy is mainly determined by the reading error, while the movement of the CNC walking machine is realized by the digital program instructions, so the positioning accuracy is determined by the CNC system and mechanical transmission error. Machine tool operation is completed under the control of the CNC device, the precision that can be achieved by each moving part directly reflects the precision that can be achieved by the processed parts, so the positioning accuracy is a very important test content.