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Metal stamping parts inspection standards are:

1, parts drawings / test guide (standard) book: some simple metal stamping parts can be controlled by drawing a variety of sizes to check, followed by the use of various measuring instruments, the most basic tape measure, caliper, micrometer, , Through rules and so on. Also note that some important tolerances marked on the drawings, the tolerance range is consistent with the drawings. For some high precision products, tolerance requirements must be strict.

2, special gage: This is relatively simple, according to the actual situation of the parts, you need skilled use.

3, sample: For some non-gage, but the shape is more complex and can not be expressed in two-dimensional drawings of the parts. You can use the second round of testing. Slab is the most intuitive reference, you can see the structure is OK, surface treatment, as well as those who criticize the front.

4, bad materials, some say this, the specific can check online.

The above is the test standard, these will be basically as a test of the beginning has been able to say, the other is not on the drawings can be expressed, you need to stamping process familiar and experienced, for example, get a hand Parts, the master can immediately know where the focus is, where it is easy to go wrong, what is the probable cause of the problem, what happens to the subsequent processes and the entire part, what happens to the mold, and how should the adjustment be made Production line staff to pay attention to what, and follow-up packaging will have what to do, and even for the overall product has any effect. For example, some appearance of the product, the product surface approval is absolutely not allowed, approval of the front not only affect the appearance, but also pose a threat to human security, and so on. These are not a few words can be clear, you need a lot of experience accumulation.