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The machining of threads is a very common task in CNC lathe machining, but ordinary threads are machined on cylinders. However, if it is machined on cones or pipes, the difficulty is very high. It not only has strict requirements for the running trajectory of the cutting tool in the machining program, but also has specific indicators for the strength of the tool. Today, our CNC lathe manufacturer will explain in detail the common ways of machining cone pipe threads in CNC lathes.
A method of cutting threads on a CNC lathe using coarse and fine cutting tools. During the machining process, when the coarse turning blade wears to the limit, the fine turning blade is replaced with the coarse turning tool, and the fine turning tool is replaced with a new blade. This can ensure the accuracy of thread cutting while also reducing tool costs. In the production internship process of ordinary lathes, machining trapezoidal threads is the most basic internship topic. However, in the internship process of CNC lathes, due to processing technology reasons, there is often little practice in machining trapezoidal threads. Some even propose that trapezoidal threads cannot be machined on CNC lathes, which is obviously incorrect. G32 is for British thread machining. The format you did not provide is G01X45Z1F150G32U5W-600L * F * I * L is the number of teeth F is the number of teeth I is the depth of one side. Personal opinion.
By checking the thread standard of the cone tube, it can be known that its tooth count is 14, pitch is 1814, tooth height is 1162, major diameter is 20955, minor diameter is 18631, and the basic value of the reference distance is 82mm (maximum is 10, minimum is 64). If it is an external cone thread, when cutting threads with larger pitch, the cutting depth is greater, and the blade wear is faster, resulting in errors in the thread pitch. CNC lathes and turning centers are high-precision and high-efficiency automated machine tools. Equipped with multi station turret or power turret, the machine tool has a wide range of machining process performance, and can process complex workpieces such as linear cylinders, oblique cylinders, arcs, and various threads, grooves, worms, etc., with linear interpolation circles. It is necessary to know the major diameter, minor diameter, and pitch of the 1/2 cone pipe thread in order to process it. By checking the thread standard of the cone tube, it can be found that the number of teeth is 14, the pitch is 1814, the tooth height is 1162, the major diameter is 20955, the minor diameter is 18631, and the basic value of the reference distance is 82mm (maximum is 10, minimum is 64). If it is an external cone thread, the starting point of the thread is generally 3 times the pitch, which means that the distance to drive the tool around Z18 can be determined according to the requirements of the thread root and the tool tip arc. For example, if your blade tip arc is R04 and the tooth base needs to be 1mm, then you need to have 01 on each side, which is Z179 and Z181 here.
The above is a list of common methods for processing conical pipe threads on CNC lathes compiled and released by our CNC lathe manufacturer. We hope that the above explanation can be helpful for everyone when processing conical pipe threads in the future.