The principle and advantages of thread milling cutter, what are the advantages of spiral milling

The cost is lower, although a single thread milling cutter is more expensive than tapping, but the cost of a single threaded hole is higher than tapping.

The accuracy is higher, the thread milling cutter is made up with a knife to achieve accuracy, and customers can choose the thread accuracy they need at will.

The finish is good, and the teeth milled by the thread milling cutter are more beautiful than the tap.

Long life, the life of the thread milling cutter is more than ten times or even dozens of times that of the tap, reducing the time for tool change and machine adjustment.

Not afraid of breaking, after the tap is broken, it may cause the scrapping of the workpiece, and the thread milling cutter is easy to take out even if it is artificially broken, and the workpiece will not be scrapped.

The machining efficiency of thread milling cutters is much higher than that of taps.

The blind hole thread milling cutter can be milled to the bottom, but the tapping cannot.

For some materials, thread milling cutters can drill holes. Milling. The chamfer is formed at one time, and the wire tapping is not possible.

A thread milling cutter can process internal and external threads with different rotation directions, but not tapping.

For threaded holes of different sizes with the same pitch, the tapping needs to be replaced, and the thread milling cutter can be universal.

The first time the threaded hole is not outdated, the thread milling cutter can be corrected by the knife, but the tapping is not, and the workpiece is only scrapped.

When machining large threaded holes, the tapping efficiency is low, and the thread milling cutter can be instantaneous.

The thread milling cutter is cut into powdery short chips, and there is no possibility of entanglement, and the tapping is made of spiral iron filings, which is easy to wrap the cutter.

For non-full-tooth contact cutting of thread milling cutters, the machine load and cutting force are smaller than taps.

Clamping is simple, the tapping requires a flexible tapping shank, and the thread milling cutter can be hydraulic. Heat rise and other tool handles.

A removable thread milling shank can be replaced with a metric system. American. Inch and other blades, economical and good.

When machining high-hardness threads, the tap is worn out badly or even impossible, which can be easily achieved with thread milling cutters.

Because the manufacturing material of the thread milling cutter is cemented carbide, the processing line speed can reach 80 200m min, and the processing line speed of the high-speed steel wire tap is only 10 30m min, so the thread milling cutter is suitable for high-speed cutting, and the surface finish of the processed thread is also greatly improved. The threading of high-hardness materials and high-temperature alloy materials, such as titanium alloy and nickel-based alloy, has always been a difficult problem, mainly because when high-speed steel wire taps process the threads of the above materials, the tool life is shorter, and the use of cemented carbide thread milling cutter for hard material thread machining is an ideal solution The machinability is HRC58 62.

For threading of superalloy materials, thread milling cutters also show excellent machining performance and an unexpectedly long service life. For threaded holes with the same pitch and different diameters, multiple tools are required to complete the machining with taps, but if the thread milling cutter is used, one tool can be used. After the tap is worn and the size of the processed thread is less than the tolerance, it can not be used anymore and can only be scrapped; When the thread milling cutter is worn and the size of the threaded hole is less than the tolerance, the necessary tool radius compensation adjustment can be carried out through the CNC system, and the thread with qualified size can be processed.

Summary. The spiral milling process is composed of two movements: the "rotation" of the spindle and the "revolution" of the spindle around the center of the hole, which determines the advantages of spiral milling. First of all, the trajectory of the tool center is a spiral rather than a straight line, that is, the tool center no longer coincides with the center of the machined hole, which is an eccentric machining process.

The diameter of the tool is not the same as the diameter of the hole, which breaks through the limitation of one tool to process the same diameter hole in the traditional drilling technology, and realizes the processing of a series of diameter holes with a single diameter tool. This not only improves the processing efficiency, but also greatly reduces the number and type of storage tools, and reduces the processing cost. Secondly, the spiral milling process is an intermittent milling process, which facilitates the heat dissipation of the tool, thereby reducing the risk of tool wear failure due to temperature accumulation.

What's more, compared with traditional drilling, the spiral milling process has been greatly improved in the use of coolant, and the whole milling process can be cooled by means of micro-lubrication or even air cooling, which is a green and environmentally friendly process.

Hello dear! Glad for your stupid question. Pros:

The processing line speed with high collapse cover, small diameter threading, low machine load and long tool life. Widely used in large-scale power generation, metallurgical equipment processing industry, pump, valve shirt processing industry, thread milling cutter to solve the processing problem of large diameter threads. I hope mine is helpful to you.

The question is spiral milling, not thread milling.

The spiral milling process is composed of two movements: the "rotation" of the spindle and the "revolution" of the spindle around the center of the hole, which determines the advantages of spiral milling. First of all, the trajectory of the tool center is a spiral cover instead of a straight line, that is, the tool center no longer coincides with the center of the machined hole, which is an eccentric machining process. The diameter of the tool is not the same as the diameter of the hole, which breaks through the limitation of one tool to process the same diameter hole in the traditional drilling technology, and realizes the processing of a series of diameter holes with a single diameter tool.

This not only improves the processing efficiency, but also greatly reduces the number and type of storage tools, and reduces the processing cost. Secondly, the spiral milling process is a macro cutting process that cuts off the bucket milling object, which is conducive to the heat dissipation of the tool, thereby reducing the risk of tool wear and failure due to temperature accumulation. What's more, compared with traditional drilling, the spiral milling process has been greatly improved in the use of coolant, and the whole milling process can be cooled by means of micro-lubrication or even air cooling, which is a green and environmentally friendly process.

Chinese: Thread milling cutter Xiang dress.

English Fengchun: thread milling

Definition: The tool usage conditions for Yinyan milling threads through a three-axis linkage machining center:

1.Three-axis simultaneous (or more) machining centers.

2.Machining thread lengths up to 3 times the cutting edge diameter of the tool.

1. Mold manufacturing Mold is precision machinery, and the production cost is high. For this reason, the threads in large molds are processed with thread milling cutters to ensure the quality of the workpiece in order to ensure the precise hole spacing and the full thread tooth shape.

2. Non-rotating or asymmetrical parts Due to the asymmetry of the shape of the parts, the first difficulty encountered by the method of thread turning is clamping, and the accuracy of processing can also be guaranteed.

3. Large boring diameter and interrupted cutting.

The traditional threading method is mainly to use thread turning tools to turn threads or use taps, plate teeth to manually tap and buckle. With the development of CNC machining technology, especially the emergence of three-axis linkage CNC machining system, a more advanced thread processing method - CNC milling of threads can be realized. Compared with the traditional thread machining method, thread milling has great advantages in machining accuracy and processing efficiency, and is not limited by thread structure and thread rotation direction during processing, such as a thread milling cutter can process a variety of internal and external threads with different rotation directions.

For threads that are not allowed to have transition buckles or retract groove structures, it is difficult to process them by traditional turning methods or taps and dies, but it is very easy to achieve them by CNC milling. In addition, the durability of the thread milling cutter is more than ten times or even dozens of times that of the tap, and in the process of CNC milling thread, the adjustment of the thread diameter size is extremely convenient, which is difficult to do with the tap and plate teeth. Due to the many advantages of thread milling, the milling process has been widely used in large-scale thread production in developed countries.

A DIY thread milling cutter for deep holes or special workpieces, where the thread milling cutter bit is welded to another tool. The strength and flexibility of the cutter are poor, and its safety factor depends on the workpiece material and the technology of the thread milling cutter maker.