Two classifications of errors in the operation of automatic cutting machine
Cutting machine system error
Hydraulic cutting machine parts must be processed in batches, and the size must be constant, or these parts change regularly. Such errors are called systematic errors.
A constant-size error is called a constant system error, while a systematic error that maintains a regular change is a systematic error.
For example, using a reamer with a diameter less than the specified size of 0.02, the diameter of all the hinged holes is 0.02 less than the specified size. This error is often caused by systematic errors.
If the cutter is worn, the diameter of the shaft to be turned out will be larger than one, and the increase of the diameter of the shaft is a certain regularity. Therefore, the error caused by such a situation is the error of regular variation, that is, Change system error.
Of course, the error due to heating deformation is also a category of varying system errors.
Cutting machine accidental error
In the process of cutting a batch of parts by the cutting machine, there are irregularities in the direction and size of the error. Sometimes it is sometimes small, sometimes it is sometimes positive, and this error is also called accidental error.
For example, when a four-column cutting machine uses a reamer to machine the holes of a batch of parts, under the same conditions, it still has to be as small as a batch of holes of the same diameter. This may be uneven hardness of the blank, and the AJJl's margin is Differences, internal stress redistribution caused by deformation and other factors, these factors are all changes.
Although the causes caused by accidental errors are various, the function of the cutting machine is very complicated, but the law of statistical error can be applied to find the law of accidental error in the mountain and control it.