Summary of methods to improve the mold processing accuracy of thermosetting injection molding machine
1. Reduce original error
Improve the geometric accuracy of the machine tool used in part processing, improve the accuracy of the imported thermosetting injection molding machine fixtures, measuring tools and tools, control the stress of the process system, and directly reduce the deformation and measurement error caused by thermal deformation,household plastic mold tool wear, and thermal stress. In order to improve the machining accuracy, it is necessary to analyze various original errors that cause machining errors and take different countermeasures for the important original errors that cause machining errors. The processing of precision parts should improve the geometric accuracy, rigidity and control thermal expansion of precision machine tools as much as possible; How to reduce the shape error and installation error of forming tools.servo type injection molding machine
This method is a basic method widely used in production. It is to reduce these factors as much as possible after finding the important factors of processing errors.precision core parts
2. Compensation for original error
The automatic error compensation method of thermosetting injection molding machine is to artificially create a new error to offset the original error in the original process system. When the original error is negative, the human error is appropriate. On the contrary, take a negative number and try to make them the same size; Or use one original error to offset the other, that is, try to make the size and direction of the two errors the same, so as to reduce the processing error and improve the processing accuracy.
3. Migration original error
The error transfer method is essentially to transfer the geometric error, stress deformation and thermal expansion of the process system. There are many examples of error transfer method. For example, when the accuracy of the machine tool cannot meet the processing requirements of the parts, it is often not to blindly improve the accuracy of the machine tool, but to find methods from the process or fixture, and give full play to its advantages, so that the geometric error of the machine tool will not affect the processing accuracy.
4. Average original error
In the processing process, due to the error of the blank or the previous process, the processing error of the thermosetting injection molding machine of the current process will usually result, or due to the change of the material properties of the workpiece, or the process change of the previous process (such as the cancellation of the original cutting process after the blank is refined), resulting in a large change in the original error. To solve this problem, the method of adjusting the averaging error by grouping is adopted. The essence of this method is to divide the original error into n groups according to its size, and the range of blank error of each group will be reduced to 1/1n of the original error, and then adjust and process according to each group.
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