What is the effect of guide pin ?
Public: 2019-09-24 15:37:39 Views: 220 The "guide pin" in the mold is also called "guide pillar". The literal meaning is that the role of the mold guide post in the mold is to guide, that is, to guide the upper mold and the lower mold to match the correct position. The most common guide is the guide post guide. Another function is to have a certain support for the upper mold base, because the guide post is mounted on the lower mold base. Some large molds may be provided with guide plates, and the micro die may be provided with a conduit that functions the same as the guide bush guide sleeve.
As sliding fit of the guide pin and guide bush is a movement of frequent in-and-out, below requirements need to put forward:
1. The guide pin has property of good lubrication, and if necessary, a lubrication groove would be exist;
2. For keeping the working strength of guide pin, the diameter of the fixed part of the guide post is 1. 5~2 times the diameter of the working part of the guide post.
3. The working surface roughness of the guide pin should not exceed 0. 63pm.
4. The working surface should be wear-resistant, at the same time, certain hardness is needed, good surface hardness after heat treatment.