The traditional thread processing method mainly uses a thread-turning tool to turn the thread or uses taps, die manual tapping and buckle with the development of CNC machining technology, especially the emergence of the three-axis CNC machining system, the more advanced thread machining method – CNC milling of the thread can be realized. Compared with traditional thread processing, thread milling has excellent advantages in machining accuracy and machining efficiency and is not limited by the thread structure and thread rotation during machining. For example, a thread milling cutter can process various directions. Internal and external threads. For threads that do not allow for the transition buckle or the undercut structure, the traditional turning method or taps and die are challenging to machine, but they are straightforward to implement by CNC milling. In addition, the durability of the thread milling cutter is ten or even ten times that of the tap. In the process of numerically milling the thread, the adjustment of the thread diameter size is extremely convenient, which is difficult to achieve by taps and dies. Due to the many advantages of thread milling, the milling process has been widely used in large-scale thread production in developed countries.
Principles and advantages
Folding principle
Thread milling is done using a three-axis machine tool (machining center). When the X and Y axes go G03/G02 one turn, the Z axis synchronously moves the amount of one pitch P.
Folding advantages
★The cost is lower. Although the single-thread milling cutter is more expensive than the wiretapping, the cost of a single-threaded hole is higher than that of the wiretapping.
★ A precision thread milling cutter achieves precision with knife compensation, and customers can choose the thread precision they need.
★The finish is good; the teeth milled by the thread milling cutter are more beautiful than the silk.
★ Long life: the life of a thread milling cutter is more than ten times or even dozens of times of silk attack, reducing the time for tool change and adjustment.
★Do not be afraid of breaking. After the wire breaks and breaks, the workpiece may be scrapped. The thread milling cutter is easy to remove even if it is manually broken, and the workpiece will not be scrapped.
★ The efficiency of thread milling cutters is much higher than wiretapping.
★Blind hole thread milling cutter can be milled to the bottom, and wiretapping is impossible
★For some materials, thread milling cutters can be drilled. Milling teeth. Chamfering once formed and wwiretappingare not possible.
★ A thread milling cutter can process internal and external threads with different rotation directions, and the wire can’t be used.
★ Threaded holes of the same pitch and different sizes, the wiretapping must be replaced several times, and the thread milling cutter can be used universally.
★ When detecting the threaded hole for the first time, the tool compensation can correct the thread milling cutter, but wiretapping is impossible, and the workpiece is only scrapped.
★ When machining large threaded holes, the wwiretappingefficiency is low, and the thread milling cutter can be realized instantaneously.
★The thread milling cutter cuts into powdery short chips, and wrapping the knife is impossible. The. Wiretapping is processed into spiral iron filings, making wrapping the knife easy.
★ Thread milling cutters are not full-tooth contact cutting, and the machine load and cutting forces are smaller than the wiretapping.
★Simple clamping, tapping requires flexible tapping shank, thread milling cutter can be used ER.HSK. Hydraulic. Hot rise and other shank.
★ A sleek thread milling cutter can be replaced with a metric system. American-made, English-made blades, etc., economical.
★When machining high-hardness threads, the wiretapping is severely worn and even impossible to machine. The thread milling cutter can be easily realized.
classification
Folding monolith
Suitable for medium and small-diameter thread milling of steel, cast iron, and non-ferrous materials, with smooth cutting and high durability. Threaded knives with different coatings for different materials.
Foldable replaceable blade
It consists of a milling cutter bar and a blade, characterized by easy manufacturing and low price. Some threaded inserts can be cut on both sides, but the impact resistance is slightly worse than the overall thread milling cutter. Therefore, this tool is often recommended for processing aluminum alloy materials.
Folded welding
DIY thread milling cutter for machining deep holes or special workpieces and welding thread milling cutter heads to another tool. The knife has poor strength and flexibility, and its safety factor depends on the material of the workpiece and the technology of the thread cutter maker.
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Post time: Aug-31-2019