What are the factors that affect the accuracy of hardware parts processing?

 With the continuous increase of industrial products, other processing methods have also been promoted. The processing of hardware parts is one of them. When using, we will find some small problems. What are the factors that affect the accuracy of the processing of hardware parts? ? What caused it?

     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 consumption approximate processing, 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 the processing of 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. Workpiece, 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, the parallelism, perpendicularity, and flatness of each surface of aluminum alloy products with a shape of 200*20*400 on an old milling machine are within 0.03, and another example is to use a low-precision lathe to process a smart long shaft. The old wire-cutting machine tools process sets of parts with inner and outer circle coaxiality within 0.02, etc. When we think that the machining accuracy is uncontrollable, we have to think of adopting self-carving, self-milling, self-grinding, Self-cut these methods to relieve.

 Around us, there are many precision parts processing. In the industry, there are still more used. It is precisely because of the many that it is necessary to use it for processing in various processing, so precise What is the automatic tool setting system for parts processing?

    Fine parts processing is to complete a variety of processes in automatic state numerical control equipment, mainly about some fixed mass production operations. However, regarding the mold industry and small-volume consumer units, do not go to the machining center at all times. Many manufacturers buy machining centers for use as CNC milling.

    Using the tool magazine is very simple for the cost of the CNC system, but the spindle, tool magazine, air compressor, and various tool holders will increase the cost, and programming and adjusting the tool magazine will also consume corresponding time. Therefore, do not use machining centers as far as possible with regard to less than one or two hundred workpieces of the same type, because of high cost and low efficiency.

    Fine parts processing can use the automatic tool setting system, the tool is loaded up, one button, the machine tool automatically measures the tool, and the machine is directly processed. The error is within 0.001~.0003mm, which is not much slower than the automatic change time. If it is a fine parts machining center, but the machine tool without automatic tool setting is compared with the machine tool without tool magazine but with automatic tool setting, the theoretical efficiency of the latter is much higher than the former.

   Regarding the domestic manufacturing industry, especially for mold consuming companies, it is usually a single piece of consumption, and labor resources are sufficient. Therefore, for the processing of small batch industrial parts, we must fully consider the application value of funds, and do not use processing centers at will equipment. What's more, there are still many problems with the tool magazines of domestic manufacturers.