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CAM Programming Tips: Thread Milling Sandvik Coromant

Welcome to the Thread Milling CAM tip from our CAM Programming Tip Series. Thread Milling is a great alternative for threading holes and bosses. This technique is highly productivity and produces higher quality threads than other options. VIDEO TRANSCRIPT: Thread Milling is an ideal option for the threading of both holes and bosses. Instead of using a turning tool or tapping tool to produce a thread, a milling tool is used to helical interpolate a thread to a specified depth and pitch. Depending on the application, this threading technique can yield better quality threads and higher productivity than its alternatives. While not as widely used as thread turning, it has the primary advantage of being able to thread non-rotational parts, plus large components that are difficult to machine on a lathe. Thread milling uses lower cutting forces making it ideal for machining long overhangs or thin walled components. Thread milling can also be applied closer to the shoulder in blind holes making a relief groove not needed unlike that in thread turning. Thread milling has many advantages over tapping as well. A range of thread diameter sizes and pitches can be used by the same tool. Plus left- and right-hand threads can be accommodated with the same insert, unlike a tapping tool. Taps are known for breaking off inside the hole. A thread mill is more secure, has better chip control, and uses less cutting forces than a tap. Due to a thread mill's shape it can also achieve full bottom ...

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