July 13, 2022
Analytical toolholder method techniques
In the machining center handle, cutting tool on the machine tool chip, we need to consider not only the speed of processing, more also have to understand its chip principle. And the chip coefficients. This is like the importance of the way the cutting edge leaves the workpiece in machining. The blade clearance may be reduced somewhat by material remaining near the end of the blade. When the chip detaches from the workpiece, a transient tensile force is generated along the front face of the blade, often resulting in burrs on the workpiece. This tensile force endangers the chip edge under dangerous conditions. This can ensure the integrity of the tool and the workpiece. This is summed up by Sheng An Bei according to years of experience!
There is such a saying, machining center handle cutting times are not the same every time, let's see!
The maximum depth allowed by each cutting, the actual cutting depth = (machining depth + cutting starting point height)/cutting times.
For example, general 2A12 with 10mm rough milling cutter cutting depth of 10mm, processing depth of 27mm, then the actual number of cutting is 3 times, each cutting depth is 9mm; If the machining depth is 30mm, then the actual cutting times is 3 times, each cutting depth is 10mm; If the machining depth is 35mm, then the actual number of cuts is 5, and each cut depth is 7mm.
Of course, for the tool in the process of chip is also a certain skill, the following chip way for us to introduce
1, along milling, milling cutter rotation direction and cutting of the feed direction is the same, at the beginning of the cutting cutter bite the workpiece and cut the final chip.
2, reverse milling, milling cutter rotation direction and cutting feed direction is opposite, milling cutter must slip on the workpiece before the beginning of the cutting thickness is zero, to the end of the cutting thickness to reach the maximum.
This is analogous to cutting forces in different directions in a three-side milling cutter, some end milling or face milling. Face milling, milling cutter just outside the workpiece, the direction of cutting force should pay special attention to. In forward milling, the cutting force will press the workpiece to the table, while in reverse milling, the cutting force will make the workpiece leave the table. That's what we need to pay attention to.
