Factors Affecting Accuracy Of Hardware Parts Processing

    Due to the progress of society, there will be more and more processing we need to use, so that it will be helpful to our production. Hardware parts processing is one of them, so the accuracy of hardware parts processing is affected. What is the factor!

   The original error of the process system: the geometric error of the process system, such as the machining principle error, the geometric accuracy of the machine tool, the manufacturing error of the tool and the fixture, the device error of the workpiece, etc. The force deformation, thermal deformation, and internal stress of the process system will affect the accuracy of parts processing. Processing principle errors such as approximate processing of consumption, forming processing, etc., processing principle errors only need to be limited within the agreed tolerance, which can often greatly increase the consumption rate.

   The error of the geometric accuracy of the machine tool for processing hardware parts is such as the radial and axial runout errors when the spindle rotates. The error of the straightness of the machine tool rail in the vertical direction, and the error of the parallelism between the rail and the rail. The error of the machine tool transmission chain.

   The tool error measurement error of hardware parts processing, the thermal deformation error of the process system. Work piece, tool thermal deformation, cutting heat, friction heat, incidental heat, etc., so many fine machine tools are placed in the warm workshop, (slow wire machine, CNC machine tool, etc.). The deformation caused by the internal stress of the workpiece is cut. The residual stress in the workpiece causes the workpiece to deform.

   Therefore, in order to reduce the machining accuracy formed by the original error, we usually think of the machine tool to stop turning, self-milling, self-grinding, and self-cutting to try to recover the machining error caused by the original error. For example, using an old milling machine to process the parallelism, perpendicularity, and flatness of each surface of an aluminum alloy product with an appearance of 200*20*400, within 0.03, another example is to use a low-precision lathe to process a smart long shaft, and another The old wire-cutting machine tools process sets of parts whose inner and outer circle coaxiality is within 0.02, etc. When we think that the machining accuracy is uncontrollable, we have to think of adopting self-turning, self-milling, self-grinding, Self-cut these methods to relieve.