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CNC lathe manufacturer explains the calculation method of thread radius
The setting of thread radius is a frequent task during the operation of a CNC lathe. Sometimes, the thread radius of a workpiece is automatically changed, which is a common conical machining part. Therefore, its radius is changed according to the conditions and needs to be automatically calculated based on the data provided by the system. Today, our CNC lathe manufacturer will explain the calculation method of thread radius for CNC lathes.
I+number of teeth per inch. CNC lathe threads are divided into: imperial system, metric system: f+pitch. Imperial system: i+teeth per inch. You can also use the method of adding pitch to f to thread British threads. Taking one inch pipe thread as an example. You can use i11 or f2309 to represent it. Because the number of teeth per inch of g1 thread is 11, which can be represented by 254% 11=2309, which is also 3/4. 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 determined 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.
Because the thread changes little from large diameter to small diameter, G97 constant speed machining is selected, so the formula is: 1000VC/π D=n. When processing threads, the feed rate VC is fixed based on the pitch, which means that the feed rate for a 1mm pitch is 1mm/r, and π and diameter D are also fixed, so they can be calculated directly.
But it depends on the material, material hardness, and cutting tool. Tooth height=D-D divided by 2. This is a unilateral quantity. There are many algorithms for d, with different values depending on the type of rib. Below I will arrange it for you: 1: Metric thread d=D-10825 multiplied by P; 2: 55 degree British thread d=D-12 multiplied by P; 3: 60 degree conical pipe thread d=D-16 multiplied by P; 4: 55 degree conical pipe thread d=D-128 multiplied by P; 5: 55 degree cylindrical pipe thread d=.
The R value of the taper thread on a CNC lathe is obtained by dividing the maximum diameter thread root size by the minimum diameter thread circle size divided by 2. The positive and negative values of R determine the direction of the tool, and even simple threads can be threaded with G32X, Z, Pitch, the system directly outputs the taper. CNC lathes and turning centers are high-precision and high-efficiency automated machine tools. Equipped with multi station turret or.
The above is the calculation method of thread radius explained by CNC lathe manufacturers. We hope that the above explanation can be helpful for everyone when running CNC lathes in the future.