Normal production of high precision screw machine thread production equipment

1 What is the high-precision thread?

Engaged in this industry are aware, the mechanical precision of the basic standards have two, one is "tolerance and cooperation" (GB1800), one is the common thread industry with the "common thread tolerance and cooperation" (GB197).

High precision and low precision screw machine thread, respectively, lies in the production of thread, which is a set of standards before implementation or after implementation of a set of standards.

Two sets of standards have a precision grade, such as H6, 6H.

But with a "6" accuracy, we will find that the tolerance values are different. Which this is the 10 - to 20-fold.

Low-precision thread is executed a set of standards.

What is going on and why?

We mention why. I have a question - in the end of a male and a female, can not be done "hole ---- axis" with precision?

If it can produce a high-precision screw vice.

2, high-precision screw precision how high?

Not high, it is only as high and precision. But this precision, low accuracy than the traditional high-thread 6 - 7 levels of accuracy.

These 6 --- 7 Accuracy is how come from?

We can check out these two "accuracy standards." A random size, such as the M10 - 6H thread, it has a diameter, large diameter, and trails the three tolerance values.

Let's check the nominal size of 10 H6 tolerance value.

Compare the two ways to the tolerance value, the former is the latter 10 - 20 times.

If the tolerance value of the former were "international standard tolerance", you can find it in the IT12 - 13 level between values.

That is, tolerance measured by international standards, low accuracy and precision screw machine thread, the accuracy class, the difference of 6-7.

3, which Mody, the so-called high-precision screw, can produce, how difficult producing it?

Is not difficult, you are now used with conventional equipment and techniques, can be produced. - If the forming method of processing, for a mold (Roll plate or rolling wheel) on it, the production cost is the same.

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