I have seen many drilling techniques in practice, and I find that drilling jigs do not have guiding elements (i.e. drill sleeves). Why do not they use drill sleeves in actual production? And I have seen in many books drilling jig, need drill sleeve of the statement, how is this matter?Reaming in our company is also done by drilling machines. Change the drill bit to the reamer. Do you want reaming?I asked the master of the workshop why the drilling fixture does not need to drill, they do not even know what the drill sleeve is, as if they are in the design of drilling machine clamp, there is no drill sleeve concept.I really don't understand why the drilling jig is using drill sleeves If it is for the tool, you can put on a processed product, and then the tool is ok. Why?
In the actual drilling process, the drilling machine fixture should have guiding element (drill sleeve), why does your company not use drill sleeve in actual production?There may be several reasonsThe 1 bit and the products to be machined are fixed, and the drill bit has sufficient positioning for steel2 the shape tolerance of the hole to be drilled has no requirementThe 3 bit has a self - located cutting edgeReaming generally does not require additional positioning, the pre drilling itself plays a guiding role. In particular, there are positioning
In the actual drilling process, the drilling machine fixture should have guiding elements (drill sleeve).The role of drill sleeve is mainly used to determine the location of the drill bit, reamer, reamer and other fixed size tools, and the structure and size of the drill bush have been standardized. According to the characteristics of the use, the drilling sleeve has four types of fixed drilling sleeve, replaceable drill sleeve, fast change drill sleeve and special drilling sleeve. Moreover, the drill sleeve is inserted into the drilling template by "interference fit".The significance of drill sleeves is that they can locate and guide the machining of the cutting tools so as to improve the machining accuracy.
Drilling holes can not use drilling sleevesReaming will not use reaming, and when the diameter of the hole is large, the method of boring is often used
