Kunshan Duyang CNC introduction: Generally, our high-speed drilling and tapping center machine can drill the largest hole 

 CNC drilling and tapping center drilling fast, because the drilling and tapping center has a high spindle speed, from the beginning of the drilling and tapping center spindle speed of 12000rpm, the speed is gradually increased in the current market of the mainstream drilling and tapping center speed are above 20000rpm, and some even reached 25000~30000rpm such a speed, 

The high speed mainly determines the drilling speed of the drilling center. The drilling center is mainly used for drilling, and the tapping mainly bears axial force and cannot bear large radial force. Drilling the M6 thread requires a 4.8mm bottom hole. M6 thread refers to a coarse ordinary thread with a nominal diameter of 6mm. Calculation method: Generally speaking, the diameter of the gong bolt is multiplied by 0.86 to drill the aperture. The diameter of the bottom hole can be determined by the manual or by the formula calculation method. 

 Commonly used metric screw base hole diameter empirical calculation formula: Steel and ductile metal D (diameter of bottom hole) =d (outside diameter of thread) -p (pitch) Cast iron and brittle metal D (bottom hole diameter =d (thread diameter) -1.1p (pitch) A helical linear, continuous bulge of a specific cross-section produced on the surface of a cylindrical or conical parent body. The thread is divided into cylindrical thread and taper thread according to its parent shape; According to its position in the mother is divided into external thread, internal thread, according to its section shape (tooth type) is divided into triangle thread, rectangular thread, trapezoid thread, serrated thread and other special shape thread.