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Detailed description of the classification and advantages of thread milling cutters

by:Ronix Tools     2021-06-15
Thread milling cutters mainly use thread turning tools to turn threads or use taps and dies to manually tap and buckle. Compared with traditional thread processing methods, thread milling has great advantages in processing accuracy and processing efficiency, and it is not restricted by thread structure and thread rotation during processing. For example, a thread milling cutter can process a variety of different rotation directions. Internal and external threads. For the thread that does not allow transitional buckle or undercut structure, it is difficult to machine using traditional turning methods or taps and dies, but it is very easy to achieve by CNC milling. In addition, the durability of thread milling cutters is more than ten times or even dozens of times that of taps, and in the process of CNC milling threads, it is convenient to adjust the thread diameter size, which is difficult to achieve with taps and dies. Due to the many advantages of thread milling, the current milling process has been widely used in the mass thread production in developed countries.   Thread milling cutter classification:    1. Integral type: suitable for small and medium diameter thread milling of steel, cast iron and non-ferrous metal materials, cutting smoothly, and high durability. Thread cutters with different coatings are used to process different materials.  2. Welding type: DIY type thread milling cutter used to process deep holes or special workpieces and weld the head of the thread milling cutter to another tool. The cutter has poor strength and flexibility, and its safety factor depends on the workpiece material and the technology of the thread milling cutter maker.  3. Replaceable blade type: It is composed of a milling cutter bar and a blade. Its characteristics are that the blade is easy to manufacture and the price is low. Some threaded blades can cut on both sides, but the impact resistance is slightly worse than that of the integral thread milling cutter. Therefore, this tool is often recommended for machining aluminum alloy materials.  The advantages of thread milling cutter:    1. The processing efficiency of thread milling cutter is much higher than that of wire tapping.  2. Blind hole thread milling cutter can be milled to the bottom, but not wire tapping.  3. Good finish, the teeth milled by thread milling cutters are more beautiful than wire taps.   4. A thread milling cutter can process internal and external threads of different rotation directions, but wire tapping is not acceptable.   5. Thread milling cutter does not make full-tooth contact cutting, and the load and cutting force of the machine tool are smaller than that of wire taps.  6. u200bu200bWhen processing large threaded holes, the efficiency of wire tapping is low, and thread milling cutters can be realized instantaneously.  7. An optional thread milling cutter rod can replace metric, American, and British blades, which is economical.   8. When processing high-hardness threads, the thread taps are worn out seriously and even unable to be processed. The thread milling cutter can be easily realized.  9. The thread milling cutter cuts into powdery short chips, and there is no possibility of entanglement. The wire tap is processed into spiral iron chips, which is easy to entangle the tool.  10. The clamping is simple, the tapping requires a flexible tapping tool holder, and the thread milling cutter can be used with ER.HSK, hydraulic, thermal expansion, etc.  11. For some materials, thread milling cutters can electric drill, mill teeth, and chamfer at one time, but wire tapping is not possible.   12. For threaded holes with the same pitch and different sizes, several taps need to be replaced, and thread milling cutters can be used universally.   13. The cost is lower. Although a single thread milling cutter is more expensive than a wire tap, the cost of a single threaded hole is higher than that of a wire tap.  14. The precision is higher, the thread milling cutter realizes the precision with the tool compensation, and the customer can choose the thread precision he needs at will.   15. Long service life, the service life of thread milling cutter is more than ten times or even dozens of times longer than that of wire tapping, reducing the time of tool change and adjustment.  16. Don’t be afraid of breaking. After the thread tap is broken, the workpiece may be scrapped. Even if the thread milling cutter is broken manually, it is easy to take out, and the workpiece will not be scrapped.  17. The thread milling cutter can be corrected by tool compensation, and the thread tapping is not. The workpiece is only scrapped.   17.
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