Can the drill jig designed in mechanical processing be without drill bush?
Yes, the material is different. But after the hole is worn, it is difficult to reuse the drilling template, such as using a drill sleeve to replace the worn one, and the clamp still doesn't affect the concrete.
You can drill without a drill sleeve, but that is a special and rare case. The drill sleeve is designed to prevent rapid wear and tear, and the clamp is seldom made of hard material, so most of the cases are made of drill sleeves.Don't set the diamond for example:1. folder specific very small, and simple structure, once in the diameter of 20 of the aluminum rod drill holes, I directly with a piece of Cr12 material made drilling mold, simple and fast2., the production of a single or very small number of cases, in order to save costs, then basically do not consider the amount of wear, you can not drill sleeves.
May not。 The drill sleeve is the guide of the drill bit, reamer and reamer. The tool is of high hardness. If it is not drilled, it will lose its guiding effect very quickly. Drill sleeve materials such as T8A, T10A, is the high quality carbon steel, general file, ordinary drill, scraper, are made of it, high hardness after quenching, can reach HRC60.
Less quantity can be without drill sleeveThe drill sleeve is used for drilling, hardening and tempering, and the hardness is improved
