The difference between the biaxial cnc machine and ordinary machine tools is that there is no need to adjust the equipment after replacing the mold and fixture, and the products can be mass-produced, shorten the construction period and save costs. Combined with the tool library of the machining center, it can realize continuous processing of multiple processes on a single machine tool and improve productivity. So, what is the main cause of the workpiece machining scale error?

The biaxial cnc machine is composed of a control system, a servo drive device, a servo motor, a mechanical feed device, a workbench part, a reaction measuring device, and so on. When the workpiece is processed, the control signal is announced to the servo drive device after the digital calculation of the CNC numerical control system, the servo motor is driven to rotate, and then the mechanical feed device is handed to the workbench, so that the relative movement between the workpiece and the tool occurs, and the orientation detection reaction device converts the practical relative movement between the workpiece and the tool into an electrical signal reaction to the CNC numerical control device. Numerical control equipment compares the amount of instruction transposition with the amount of practical transposition of the response, so as to process the workpiece that meets the requirements of the machining program design.

However, in practical processing, it often shows that the workpiece and the tool are not moved relative to each other in accordance with the command value, resulting in the size of the machined parts being inconsistent with the design. Thus, the phenomenon of machining scale error occurs. The main reasons for the formation of such problems are: the practical transposition value of the servo motor is consistent with the command transposition value, but the practical relative movement of the workpiece and the tool does not meet the requirements; The practical transposition value of servo motor is inconsistent with the command transposition value. Machine tool drive system zero azimuth error; External interference or pulse loss and mechanical problems caused by several reasons.

In the actual operation process, due to the parameter setting, the lack of experience of the operator, the inconsistent operating standards, the aging and wear of the lathe equipment and other factors, the processing accuracy will be biased, which will affect the quality of the product processing. Only through the careful analysis of the main influencing factors, targeted rectification, in order to provide effective protection for the production of qualified products.

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